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NEWSLETTER 05/2024 25.05.2024
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Please acknowledge use of the database www.shark-references.com in your publications, and cite:
Pollerspöck, J. & Straube, N. 2024, Bibliography database of living/fossil sharks, rays and chimaeras (Chondrichthyes: Elasmobranchii, Holocephali), www.shark-references.com, World Wide Web electronic publication, Version 2024 |
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Shark reference custom search tool and maintenance Update! TAs of today we received 17 donations totalling €765 for our custom search tool project. Our sincere thanks to all donors!!! We will now start the work, in a first step we will search for a qualified programmer. We will keep you informed about the progress of the project via our newsletter and on facebook. Fins up, Jürgen & Nico
Some changes in the web-page organisation: We added a new ‚TOOLS‘ menu item- all available tools will be available here from now, for example a guide how to download species specific literature lists. Please check it out! ![](https://mcusercontent.com/cafd0af5aa18ae43a0535f999/images/78f212b1-db83-1abb-3339-b2e8747fe869.jpg) ------------------------------------------------------------------------------------------------------------------------ Reorganisation of the species lists! update - - - finished! Several extant taxa are also documented in the fossil record. We are in the process of creating species lists of extant taxa, which include such records. Extant taxa occurring in the fossil record are now marked with the suffix "-f" (e.g., Dalatias sp. -> Dalatias sp-f, Dalatias licha -> Dalatias licha-f) to indicate that the reference refers to a fossil record. The fossil records of the extant taxa are listed in the "Extinct - All" and "Extinct - Valid" lists. A complete list of taxa that have been marked with ‚-f’ can be found here. Example list "Extinct - valid species" ![](https://mcusercontent.com/cafd0af5aa18ae43a0535f999/images/505e2771-c78f-80ee-4353-83331751fdea.jpg) ------------------------------------------------------------------------------------------------------------------------ ADJUSTMENT OF CITATION STYLE IN SHARK REFERENCES We started to change our old (and unique!) citation style to adapt to the APA citation style (for information please see: https://www.mendeley.com/guides/apa-citation-guide) to make the usage of references listed in shark references easier and more compatible with a widely accepted reference style adopted by several international scientific journals. The transition is ongoing, so far 27099 (last month: 26955) references are changed. ------------------------------------------------------------------------------------------------------------------------ New paper co-authord by team shark-references!
Torralba Sáez, M., Hofreiter, M. & Straube, N. Shark genome size evolution and its relationship with cellular, life-history, ecological, and diversity traits. Sci Rep 14, 8909 (2024). https://doi.org/10.1038/s41598-024-59202-4 ![](https://mcusercontent.com/cafd0af5aa18ae43a0535f999/images/62c03eb4-d7c2-0f59-a806-3b2c3143da0a.jpg) Genome size evolution in sharks and outgroups. Species-level phylogeny (‘Maximum Clade Credibility’ or MCC tree hypothesis) depicting ancestral genome size reconstruction under the best-fitting maximum-likelihood ‘Early-Bust’ (EB) model, with details on geological timescale. Tips are colour-coded, as stated in the inset (bottom-left), by the average genome size of each species (represented in the barplot, right). Internal node colours are based on the most likely ancestral genome size estimates inferred by the model (values reported to two decimal places at nodes). Species names at tips are colour-coded according to the taxonomic order to which they belong, following Fig. 1b colour scheme, with outgroup species in black (left inset). The ancestral genome size state for all extant sharks was estimated at 6.33 pg, and for all extant Chondrichthyes at 3.55 pg. Within Selachii, genome size is differently evolving across higher-level taxa: while galeomorph sharks show a general trend in genome size diminution (with the exception of Heterodontiformes and Scyliorhinidae), most squalomorph sharks (especially Squatiniformes and Squaliformes) exhibit steady genome size increases.
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Since we were asked several times, if we could help distributing chondrichthyan-related job opportunities, we would like to try this out as a new category in the newsletter besides postings on our Facebook page. This category definitely depends on the community sharing job openings, so please do not hesitate and send us vacancies or similar. Right now, we have four interesting job openings. We will keep it simple and just crosslink: |
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NEW PARTNERS OF SHARK-REFERENCES
![](https://mcusercontent.com/cafd0af5aa18ae43a0535f999/images/ec987044-f463-5198-5a06-8b26b8102f10.png) Shark Trust and Lamna’s new project, Tiburones y Rayas is hosting its first event this June – a Wikimarathon for Sharks and Rays – in Spanish! The event will be held on Saturday the 29th June. Although this is the main day, editing will take place in the weeks before and after the event. It will be a series of days of coordinated work together with the Wikimedia Foundation during which we will improve and expand the information on Wikipedia about elasmobranchs in Spanish. We have 9 countries involved to date. With this global effort we are hoping to create a media impact which will attract more collaborators and therefore generate the first steps towards a support network for Spanish-speaking shark and ray researchers, conservationists, communicators and advocates. If you would like to take part in the WikiMarathon or would just like to find out more about the project, please visit the main website and fill out the form to get involved. And please do remember to share with all your Spanish-speaking colleagues! sharktrust.org/tiburones-y-rayas
Would you like to become a shark-reference partner? Please contact us per E-mail!
Partner in Google-Maps:
![](https://gallery.mailchimp.com/cafd0af5aa18ae43a0535f999/images/partner.png)
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Upcoming Meetings:
95th PalGes in Warsaw 2024 - Joint Meeting of the Polish Paleobiologists and the annual meeting of the Paläontologische Gesellschaft (Palges)
More than extinct species: the importance of fossils for ecology, evolution and conservation across borders ![](https://mcusercontent.com/cafd0af5aa18ae43a0535f999/images/63de46de-518e-1b39-8b78-9a46c9b2a863.png) ------------------------------------------------------------------------------------------------------------------------ The First Small-Scale Fisheries Regional Symposium for Europe will occur on July 1-3, 2024, in Cyprus! Abstract Submission until March 15th https://www.ssfsymposium.com/europe-ssf-symposium This interdisciplinary symposium is organized to share experiences, research, lessons, and stories to encourage in-depth discussions about what must be done to support sustainable small-scale fisheries in Europe. It may be an opportunity for marine researchers who work among fish and fishers. The European Institute for Marine Studies and # TBTIGlobal will be hosts, among multiple partners. ![](https://mcusercontent.com/cafd0af5aa18ae43a0535f999/images/d1986232-0ad7-271b-94fd-e0021e13ef82.jpg) ------------------------------------------------------------------------------------------------------------------------ ![](https://mcusercontent.com/cafd0af5aa18ae43a0535f999/images/7ea9e9dc-5659-45f9-96fd-9c2ccbd3631b.png) 20. Tagung der Gesellschaft für Ichthyologie (GfI) e.V. vom 7. bis 10. November 2024 an der Humboldt Universität zu Berlin ------------------------------------------------------------------------------------------------------------------------ ![](https://mcusercontent.com/cafd0af5aa18ae43a0535f999/images/a9517543-55c0-218c-2f86-2f5a8a78843d.jpg)
Symposium Overview:
Public aquariums showcase aquatic life while raising awareness and educating the public on biodiversity and the need for conservation. Recently, aquaria have followed in the footsteps of zoos by taking more directed approaches in species conservation as well as leveraging animals in their collections to fill biological knowledge gaps through research. Aquaria possess some unique qualities that can be applied to elasmobranch research and conservation efforts. In addition to the increasing number of institutions that now support dedicated research departments or staff, aquaria have considerable public audiences (both physical and virtual), ambassador animals to foster deeper connections and empathy for species, dedicated education departments typically focused from the preschool to high school level, comprehensive communication departments with media connections, and extensive animal care and specialized veterinarian teams. Through these expertise aquaria are able to house animals that are often not feasible to care for in traditional academic settings, and for long durations often throughout entire life cycles, allowing important life history information to be investigated.
There has been a longstanding involvement of aquarium professionals in the American Elasmobranch Society, best highlighted by the career and research accomplishments of the late Alan Henningsen. However, the number of AES members who represent aquaria has dwindled over the past few decades. We hope that this symposium will highlight these past connections, including Alan’s legacy, encouraging more aquaria personnel who attend to sustain their memberships and take more active roles moving forward to engage with other members of AES from different sectors (e.g. academia, nonprofits, etc). Equally, we anticipate that this will further highlight and promote collaborative opportunities between aquaria and AES members to the broader benefit of the elasmobranch research field in general.
Symposium organizers:
Jennifer Wyffels, wyffels@ripleys.com
Steve Kessel, skessel@sheddaquarium.org
Kady Lyons, klyons@georgiaaquarium.org
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IMPORTANT DATES
This year’s annual EEA conference will be held in Thessaloniki, Greece, from 22nd to 24th of October, by the Environmental Organisation iSea, with the aim to bring together the scientific community and other stakeholders working with sharks, rays and chimaeras around Europe and the Mediterranean.
The EEA 2024 Conference topic is “Stronger collaboration for better conservation” focusing to bring together not only an increased number of experienced scientists and other stakeholders from different fields of shark and ray research and conservation, but also give an advanced role to younger researchers that will have the opportunity to better meet the EEA community and the most recent results of their work. This year’s aim is also focused on increasing the participation and the scientific input from data-poor areas and countries that are not highly represented within the EEA community and thus researchers from the Balkans, Eastern Europe, North Africa and the Middle East will be invited and encouraged to participate.
EEA 2024 and its overall content; panels, workshops and keynote speakers, were built on the common values of diversity, equity and community, that EEA members share.
We look forward to hosting you during the 3-day conference for which the agenda and events aim to scale up elasmobranch conservation through the establishment of stronger collaborations!
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If you would like us to post information about your newly published work, please send us a picture and the paper as a pdf to nicolas.straube@shark-references.com or juergen.pollerspoeck@shark-references.com.
Nr. 1 (74 Likes/Emojis, 28 Shares): ![](https://mcusercontent.com/cafd0af5aa18ae43a0535f999/images/5ea44d7c-f8c1-1325-95ee-50dff1eca21f.jpg) A new family and species of deep sea catshark! https://shark-references.com/species/view/Dichichthys-satoi The genus Dichichthys was resurrected for five species previously allocated to the genus Parmaturus in the family Pentanchidae. Supraorbital crests on the chondrocranium distinguish Dichichthys from Parmaturus and other members of the family Pentanchidae. A new family, Dichichthyidae, has been proposed to contain Dichichthys. The sequence of the NADH2 mitochondrial gene confirms the placement of Dichichthys outside of the Pentanchidae family, as well as separate from the Atelomycteridae and Scyliorhinidae families. Dichichthys albimarginatus was described using a holotype collected off the coast of New Caledonia. A second juvenile specimen collected off the coast of Papua New Guinea was tentatively assigned as D. cf. albimarginatus. Dichichthys bigus is known from the holotype collected in the Coral Sea off the coast of Queensland, Australia. A new, parasite-afflicted underwater observation was reported further north of Queensland. The type species Dichichthys melanobranchus, previously only known from juvenile specimens, was redescribed based on adult specimens. Dichichthys nigripalatum is known from the holotype collected off Sumbawa, Indonesia, and a tentatively identified photo record from West Java. Dichichthys satoi n. sp. is described from the West Norfolk Ridge and off the North Island of New Zealand. Members of the genus Dichichthys have unique curved egg cases which have pliable ridges made up of numerous fibres and long coiled tendrils on the posterior end. White, W.T.; Stewart, A.L.; O’Neill, H.L.; Naylor, G.J.P. Dichichthyidae, a New Family of Deepwater Sharks (Carcharhiniformes) from the Indo–West Pacific, with Description of a New Species. Fishes 2024, 9, 121. https://doi.org/10.3390/fishes9040121 image: Carl Struthers, Museum of New Zealand Te Papa Tongarewa Nr. 2 (45 Likes/Emojis, 10 Shares): ![](https://mcusercontent.com/cafd0af5aa18ae43a0535f999/images/0a7feb42-e302-7316-3637-e51f89be3699.jpg) Mas, F. & Cortés, E. & Coelho, R. & Defeo, O. & Miller, P. & Carlson, J. & Gulak, S. & Domingo, A. 2024 Blue shark (Prionace glauca) movements, habitat use, and vertical overlap with longline fishing gears in the southwestern Atlantic Ocean. Marine Biology, 171, Article 106 https://link.springer.com/article/10.1007/s00227-024-04421-6 In this study, conventional (4,648) and electronic (18) tags were used to assess the horizontal and vertical movements of blue sharks, Prionace glauca, and their vertical overlap with shallow and deep-set longline fishing gears in the southwestern Atlantic Ocean. Thanks to Federico Mas for sharing! iamge: Prionace glauca (Linnaeus, 1758), blue shark and anchovy baitball, Cape Point, South Africa, Atlantic Ocean © Alessandro De Maddalena https://shark-references.com/species/view/Prionace-glauca Nr. 3 (42 Likes/Emojis, 9 Shares): ![](https://mcusercontent.com/cafd0af5aa18ae43a0535f999/images/583a37d9-e61e-a092-0475-5b46748ac921.jpg) During efforts to disentangle Cape fur seals Arctocephalus pusillus pusillus from fishing gear or plastic debris, 11 incidents of seals impaled by the dorsal spines of St Josephs Callorhinchus capensis (order Chimaeriformes) were recorded. These observations overlapped with mass die-offs of the seals owing to food shortages, as indicated by large numbers of emaciated seals and widespread miscarriages of seal foetuses. This suggests that the St Joseph is not a desirable prey species for Cape fur seals, though this chimaera may provide a source of food, especially when preferred prey species are unavailable. This is the first published record of Cape fur seals feeding on chondrichthyans in Namibian waters. Documenting these types of food-web linkages between pinnipeds and chondrichthyans will allow for a better understanding of how impacts on their populations may more broadly affect Namibia’s marine ecosystems. Leeney, R.H. & Dreyer, N. 2024 Predation on the St Joseph Callorhinchus capensis by Cape fur seals Arctocephalus pusillus pusillus in Namibia. African Journal of Marine Science, in press Thanks to Ruth Leeney for sharing! https://shark-references.com/.../view/Callorhinchus-capensis images: Callorhinchus capensis Duméril, 1865, north of Swakopmund, Namibia, April 2022 © Ruth H. Leeney/ NaRaS project
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Missing papers:
Many thanks to all friends of shark-references, who sent us some missing papers last month!
Shark-References would kindly like to ask you for your contribution to this project. At the moment we are looking for some of the following papers: Extinct Chondrichthyes: new entry: Arambourg, C. (1954) Les Poissons Crétacés du Jebel Tselfat (Maroc). Notes et Mémoires du Service Géologique du Maroc, 118: 188 pp 18 Taf. new entry: Zhelezko V.I. (1995) Biostratigraphy of Cretaceous-Paleogene phosphorite-bearing formations of Trans Urals and North-Western Kazakhstan on elasmobranchians. Abstract of thesis on a degree of Doctor of Geological and Mineralogical Sciences. Eketerinburg, 42 p. [In Russian]. new entry: Parona, C.F. (1916) Nuovi fossili del Miocene di Rosignano Piemonte. Libr. Fr. Bocca, 8 pp. new entry: Jordan, D.S. (1925) The fossil fishes of the Miocene of Southern California. Stanford University Publications, University Series, Biological Sciences, 4(1), 1–51 Extant Chondrichthyes: new entry: Pokapunt, W,J. & Tantivala, A. & Munprasit & Samrankitdamrong, P. (1983) Some deep-sea fishes in the Andaman Sea. Exploratory Fishing Division, Department of Fisheries, Bangkok, 70 pp. new entry: Colombelli, A. & Bonanomi, S. (2022) Length–weight relationships for six elasmobranch species from the Adriatic Sea. Journal of Applied Ichthyology, 38(3), 328–332 new entry: Karadurmus, U. (2022) Length-Weight Relationship and Condition Factor of Sixteen Demersal Fish Species from the Southern part of the Marmara Sea, Turkey. Journal of Ichthyology, 62(4), 543–551 Please support www.shark-references.com and send missing papers (not listed papers or papers without the info-symbol) to juergen.pollerspoeck@shark-references.com or nicolas.straube@shark-references.com
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TAXONOMIC NEWS/ NEW SPECIES Extant Chondrichthyes: ![](https://mcusercontent.com/cafd0af5aa18ae43a0535f999/images/5ea44d7c-f8c1-1325-95ee-50dff1eca21f.jpg) White, W.T. & Stewart, A.L. & O’Neill, H.L. & Naylor, G.J.P. (2024): Dichichthyidae, a New Family of Deepwater Sharks (Carcharhiniformes) from the Indo–West Pacific, with Description of a New Species. Fishes, 9, Article 121 New species: Dichichthys satoi Abstract: The genus Dichichthys was resurrected for five species previously allocated to the genus Parmaturus in the family Pentanchidae. Supraorbital crests on the chondrocranium distinguish Dichichthys from Parmaturus and other members of the family Pentanchidae. A new family, Dichichthyidae, has been proposed to contain Dichichthys. The sequence of the NADH2 mitochondrial gene confirms the placement of Dichichthys outside of the Pentanchidae family, as well as separate from the Atelomycteridae and Scyliorhinidae families. Dichichthys albimarginatus was described using a holotype collected off the coast of New Caledonia. A second juvenile specimen collected off the coast of Papua New Guinea was tentatively assigned as D. cf. albimarginatus. Dichichthys bigus is known from the holotype collected in the Coral Sea off the coast of Queensland, Australia. A new, parasite-afflicted underwater observation was reported further north of Queensland. The type species Dichichthys melanobranchus, previously only known from juvenile specimens, was redescribed based on adult specimens. Dichichthys nigripalatum is known from the holotype collected off Sumbawa, Indonesia, and a tentatively identified photo record from West Java. Dichichthys satoi n. sp. is described from the West Norfolk Ridge and off the North Island of New Zealand. Members of the genus Dichichthys have unique curved egg cases which have pliable ridges made up of numerous fibres and long coiled tendrils on the posterior end.
Extinct Chondrichthyes: Breeden, B.T. & Oyama, N. & Manabe, M. & Takahashi, H. & Sakata, C. (2024): A new freshwater lonchidiid hybodontiform shark (Chondrichthyes, Elasmobranchii) from the Upper Triassic Momonoki Formation in Yamaguchi, Japan. Journal of Vertebrate Paleontology, 43(5), Article e2322749 New species: Parvodus ominechonensis Abstract: We describe an assemblage of isolated hybodontiform shark teeth from the nonmarine Upper Triassic (Carnian) Momonoki Formation in the town of Ominecho in Mine, Yamaguchi, Japan. These teeth were first reported in 1996 and tentatively referred to the genus Hybodus, but their taxonomy was not rigorously evaluated in an apomorphy-based context, and they have since been mostly overlooked. Herein, we assign them to a new species, Parvodus ominechonensis, based on a combination of synapomorphies of the lonchidiid genus Parvodus and autapomorphic character states. A diversity of Triassic hybodontiforms is known from Japan, but of these, Parvodus ominechonensis sp. nov. is the only taxon known from nonmarine deposits and the first reported occurrence of Lonchidiidae. Parvodus ominechonensis fills a gap in the stratigraphic record of Parvodus between occurrences in Middle Triassic (Anisian) and Middle Jurassic (Bajocian) strata. The global Triassic record of Parvodus comprises Parvodus huizodus from the Olenekian of China, Parvodus sp. from the Anisian of China, and Parvodus ominechonensis from the Carnian of Japan, of which Parvodus ominechonensis and Parvodus huizodus are known from nonmarine deposits. After the Triassic, Parvodus is known from marine and nonmarine strata across Laurasia and in South America until its extinction during the Early Cretaceous. This suggests that Parvodus may have originated in freshwater habitats in the South China region of Pangea following the end-Permian mass extinction and diversified throughout the Triassic in present day East Asia before attaining a global distribution later in the Mesozoic. Cicimurri, D. & Ciampaglio, C. & Hoenig, M. & Shell, R. & Fuelling, L. & Peterman, D. & Cline, D.A. & Jacquemin, S.A. (2024): A Description of the New Hybodont Shark Genus, Columnaodus, from the Burlington and Keokuk Limestones (Carboniferous, Mississippian, Osagean) of Illinois and Iowa, USA. Diversity, 16(5), Article 276 New genus: Columnaodus New species: Columnaodus witzkei Abstract: Bonebeds occurring in exposures of the Burlington and Keokuk Limestones (Mississippian/Osagean) along the Iowa and Illinois border (USA) contain an abundant and diverse collection of chondrichthyan remains that includes teeth, spines, denticles, and coprolites. These remains represent cochliodont, hybodont, petalodont, ctenacanthid, symmoriid, and acanthodian (stem chondrichthyan) taxa. The thickest of these beds, herein referred to as the Burlington–Keokuk bonebed, occurs at the top of the Burlington Limestone and presents a remarkable opportunity to study the assemblage of mid-continent, Middle Mississippian chondrichthyans. Bulk matrix samples of this bonebed were collected from two quarries (Biggsville Quarry, Biggsville, IL, USA, and Nelson Quarry, Mediapolis, IA, USA) and disaggregated. Among the multitude of previously known taxa, several teeth represented a new genus and species of hybodont shark. Herein, we describe these teeth as Columnaodus witzkei (gen. et sp. nov.), a hybodontiform with dental features comparable to unnamed specimens reported from elsewhere. Parasites: Youssef, F. & Benmansour, B. & Yurakhno, V.M. & Mansour, L. (2024): New marine leech species of Branchellion Savigny, 1822 (Hirudinida: Piscicolidae) and new host record of Pontobdella muricata in the Gulf of Tunis. Biologia, in press New species: Branchellion tunisensis Abstract: Studies of Hirudinea species infesting elasmobranchs are scarce and scattered worldwide and they are inexistent off the Tunisian waters. In this work, we aimed to assess the occurrence of these parasites on two ray species in the Gulf of Tunis (Tunisia). Between 2017 and 2021, 254 fish specimens belonging to two Torpedinidae species (marbled electric ray, Torpedo marmorata Risso, 1810, and common torpedo, Torpedo torpedo (Linnaeus, 1758)) were examined for leech infestation. Morphological and molecular characterizations based on 18S rDNA and cytochrome c oxidase (COI) sequences allowed us to identify two leech species: Pontobdella muricata (Linnaeus, 1758) and a new Branchellion Savigny, 1822 species Branchellion tunisensis sp. n. This new species (B. tunisensis) exhibited distinctive traits unlike other Branchellion, including a transparent body marred with dark green along the abdomen and neck, long trachelosome (about 1/3 of the length of the body), distinctive two eye spots, the presence of a pair of lateral branchiae per somite except for the last 2 somites and cup-shaped posterior sucker. Molecular analysis of the 18S rDNA and COI gene fragments shows more than 10% divergence of B. tunisensis from other Branchellion spp. and high identity score of P. muricata with other sequenced isolates. This work allowed us to report the presence of P. muricata for the first time off the Tunisian coasts and to identify a new marine leech species parasitizing electric rays in the Gulf of Tunis. Dallarés, S. & Kuchta, R. (2024): New species of Echinobothrium van Beneden, 1849 (Cestoda: Diphyllidea) from Indo-Pacific maskrays (Neotrygon Castelnau) off Australia and Borneo. Folia Parasitologica, 71, Article 3 New species: Echinobothrium giraffaeous, Echinobothrium bethae, Echinobothrium ivanovae, Echinobothrium tyleri Abstract: Four new diphyllidean species of the genus Echinobothrium van Beneden, 1849 are described from Indo-Pacific maskrays (Neotrygon Castelnau, Dasyatidae). Echinobothrium giraffaeous sp. n. from Neotrygon leylandi (Last) off northern Australia, Echinobothrium ivanovae sp. n. from Neotrygon orientalis Last, White et Serét off Borneo, and Echinobothrium bethae sp. n. from Neotrygon varidens (Garman) off Borneo are distinguished from all but one of the 33 valid species of the genus by the possession of the outermost A hooks with an extended base into which the bases of the three outermost B hooks are inserted. Echinobothrium rhynchobati (Khalil et Abdul-Salam, 1989) is the only known species with this unique feature, but its rostellum has a system of interlocking knobs and sockets that articulate bases of the A and B type hooks with one another, which is not present in any of the newly described species. Echinobothrium tyleri sp. n. from Neotrygon australiae Last, White et Serét off northern Australia is distinguished from all known species of Echinobothrium by its unique rostellar hook formula {2-3 18/17 2-3}. With the present addition of four new species, the central Indo-Pacific realm becomes the major hotspot for Echinobothrium, from which 13 species have been reported. Bueno, V.M. & Trevisan, B. & Caira, J.N. (2024): Phylogeny of the cestode family Escherbothriidae (Cestoda: Rhinebothriidea) reveals unexpected patterns of association with skate hosts. Invertebrate Systematics, 38(4), Article Is23056 New species: Semiorbiseptum beitae, Semiorbiseptum marquesi, Escherbothrium cielochae Abstract: The rhinebothriidean tapeworm family Escherbothriidae has recently been expanded to include the genus Ivanovcestus, species of which parasitise arhynchobatid skates. Similarities in morphology and host associations between Ivanovcestus and Semiorbiseptum – a genus yet to be assigned to one of the families in the order Rhinebothriidea – led us to explore the possibility that Semiorbiseptum might also belong in the Escherbothriidae. Morphological similarities with Scalithrium ivanovae, Scalithrium kirchneri and Rhinebothrium scobinae, all of which also parasitise arhynchobatid skates, raised questions regarding the generic placements of these species. In addition, new collections from the skate Sympterygia brevicaudata revealed two new species that morphologically resemble species of Ivanovcestus. A combination of morphological and molecular data were used to assess the generic placement of the newly discovered species and refine our understanding of the membership of the family Escherbothriidae. Sequence data for the D1–D3 region of the 28S rDNA gene were generated de novo for 14 specimens of 7 rhinebothriidean species and combined with comparable published data to represent all 6 families in the Rhinebothriidea in the analysis. The phylogenetic tree resulting from maximum likelihood analysis strongly supports the inclusion of the genus Semiorbiseptum in the family Escherbothriidae. Our work also suggests that the skate-hosted species previously assigned to Scalithrium and Rhinebothrium are also members of Semiorbiseptum and that Ivanovcestus is a junior synonym of Semiorbiseptum. Six species are transferred to Semiorbiseptum, bringing the total number of species in the genus to ten. The diagnosis of Semiorbiseptum is amended to accommodate the additional species. A second species in the previously monotypic type genus of the family, Escherbothrium, is described. The diagnosis of the Escherbothriidae is amended to include the new and transferred species. This study underscores the importance of integrating morphological and molecular data in bringing resolution to cestode systematics. We believe our findings provide a robust foundation for future research into the evolutionary history and host associations of cestodes within the order Rhinebothriidea and beyond. These also highlight the importance of expanding our understanding of skate-hosted cestodes.
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Latest Research Articles
Extant Chondrichthyes: Alvarenga, M. & D'Elia, A.K.P. & Rocha, G. & Arantes, C.A. & Henning, F. & de Vasconcelos, A.T.R. & Solé-Cava, A.M. (2024) Mitochondrial genome structure and composition in 70 fishes: a key resource for fisheries management in the South Atlantic. BMC Genomics, 25(1), Article 215 https://dx.doi.org/10.1186/s12864-024-10035-5 Appleby, M. & Raoult, V. & Broadhurst, M.K. & Gaston, T. (2024) Can denticle morphology help identify southeastern Australian elasmobranchs? Journal of Fish Biology, in press https://dx.doi.org/10.1111/jfb.15704 Baulier, L. & McHugh, M. & Minto, C. & Morandeau, F. & Murphy, S. & Sourget, Q. & Oliver, M. & Morfin, M. (2024) Survivorship of discarded cuckoo ray in bottom trawl fisheries in the northern Bay of Biscay, Southern Celtic and Irish Seas. Fisheries Research, 273, Article 106971 https://dx.doi.org/10.1016/j.fishres.2024.106971 Becker, A. & Butcher, P.A. & Morris, S. & Champion, C. & Peddemors, V.M. & Taylor, M.D. (2024) Interactions between White Sharks (Carcharodon carcharias) and artificial reefs along the east-coast of Australia. Fisheries Research, 273, Article 106961 https://dx.doi.org/10.1016/j.fishres.2024.106961 Behera, R.K. & Mohanty, S.R. & Acharya, S. & (2024) On the Identity of a rare Morphologically Abnormal Butterfly ray from the east Coast of India Resolved Through Molecular tool. Thalassas, in press https://dx.doi.org/10.1007/s41208-024-00717-y Bianchi, S.J. & Roman, J.M. & Lucifora, L.O. & Barbini, S.A. (2024) Life-history traits of an exploited skate: The short-tail yellownose skate Zearaja brevicaudata (Chondrichthyes: Rajiformes). Journal of Fish Biology, in press https://dx.doi.org/10.1111/jfb.15712 Blackburn, D.G. & Hughes, D.F. (2024) Phylogenetic analysis of viviparity, matrotrophy, and other reproductive patterns in chondrichthyan fishes. Biological Reviews, in press https://dx.doi.org/10.1111/brv.13070 Bruns, S. & Al Hameli, S. & Sulanke, E. & Henderson, A.C. (2024) A wandering wedgefish illustrates the need for cooperative elasmobranch conservation in the Arabian Gulf. Environmental Biology of Fishes, 107(3), 307–318 https://dx.doi.org/10.1007/s10641-024-01531-4 Calle-Morán, M.D. & Aragón-Noriega, E.A. & Galván-Magaña, F. (2024) Age and growth of the crocodile shark, Pseudocarcharias kamoharai, in the Eastern Tropical Pacific Ocean. Marine Biology Research, in press https://dx.doi.org/10.1080/17451000.2024.2316652 Camilo, L.O. & Maganhe, B.L. & Neto, H.G. & Sanches, E.G. (2024) Enterolith with a bonefish spine nidus in a Brazilian cownose ray Rhinoptera brasiliensis (Muller & Henle) (Myliobatiformes: Rhinopteridae). Journal of Fish Diseases, in press https://dx.doi.org/10.1111/jfd.13946 Capapé, C. & Ali, M. (2024) Captures of large and abnormal roundfail stingrays Taeniurops grabatus (Chondrichthyes: Dasyatidae) from the Syrian Coast (Eastern Mediterranean Sea). Cahiers de Biologie Marine, 65, 109–114 https://dx.doi.org/10.21411/CBM.A.BF53A61 Cardoso, M.D. & Maciel, O.L.D. & de Souza, A.L.M. & Roges, E.M. & Gonçalves, V.D. & Siciliano, S. & Rodrigues, D.D. & Hauser-Davis, R.A. (2024) Smelly shark, smelly ray: what is infecting you? Journal of Applied Microbiology, 135(4), Article lxae068 https://dx.doi.org/10.1093/jambio/lxae068 Cetkovic, I. & Serena, F. & Barash, A. & Mrdak, D. & Giovos, I. & Ikica, Z. & Dordevic, N. & Pesic, A. & Divanovic, M. & Milosevic, D. (2024) Combining official fisheries monitoring and citizen science data to create the first chondrichthyan checklist of Montenegro. Acta Adriatica, 65(1), Article 4 https://dx.doi.org/10.32582/aa.65.1.4 Cliff, G. & Booyens, N.G. & Daly, R. & Jordaan, G. & Nkabi, N. & Parker, D. & Mann, B.Q. (2024) Biology and ecology of the African blackspot shark Carcharhinus humani on the east coast of South Africa. African Journal of Marine Science, 46(1), 65–76 https://dx.doi.org/10.2989/1814232x.2024.2313544 Coghlan, A.R. & Morales, N. (2024) New shark in the park: Tiger shark Galeocerdo cuvier observations in the remote South Pacific. Journal of Fish Biology, in press https://dx.doi.org/10.1111/jfb.15737 Cutler, C.P. & Canicatti, M.E. & Omoregie, E. (2024) Evidence That Aquaporin 11 (AQP11) in the Spiny Dogfish (Squalus acanthias) May Represent a Pseudogene. International Journal of Molecular Sciences, 25(4), Article 2028 https://dx.doi.org/10.3390/ijms25042028 Deval, M.C. & Mutlu, E. (2024) Spatio-temporal density of the demersal Chondrichthyes assemblage in an upper bathyal of the eastern Mediterranean Sea. Marine Biodiversity, 54(2), Article 31 https://dx.doi.org/10.1007/s12526-024-01423-x Dumont, A. & Duparc, A. & Sabarros, P.S. & Kaplan, D.M. (2024) Modeling bycatch abundance in tropical tuna purse seine fisheries on floating objects using the Δ method. ICES Journal of Marine Science, in press https://dx.doi.org/10.1093/icesjms/fsae043 Elston, C. & Murray, T.S. & Rogers, T. & Parkinson, M.C. & Mann, B.Q. & Daly, R. & Filmalter, J.D. & Cowley, P.D. (2024) Diamond Gymnura natalensis and duckbill Aetomylaeus bovinus rays undertake nationwide coastal migrations. Journal of Fish Biology, in press https://dx.doi.org/10.1111/jfb.15728 Figueroa, D.E. & Belleggia, M. & Andreoli, G. & Izzo, S. & Bovcon, N. & Pérez-Losada, M. & De Wysiecki, A.M. & Colonello, J.H. & Trucco, M.I. (2024) A Faunistic Revision of Longnose Skates of the Genus Dipturus (Rajiformes: Rajidae) from the Southern Southwestern Atlantic Ocean, Based on Morphological and Molecular Evidence. Diversity, 16(3), Article 146 https://dx.doi.org/10.3390/d16030146 Fogliarini, C.O. & Giglio, V.J. & Bender, M.G. & Ferreira, C.E.L. (2024) Multidecadal fishers' knowledge reveals overexploitation of sharks in southeastern Brazil. Neotropical Ichthyology, 22(1), Article e230087 https://dx.doi.org/10.1590/1982-0224-2023-0087 Funes, M. & De Wysiecki, A.M. & Bovcon, N.D. & Jaureguizar, A.J. & Irigoyen, A.J. (2024) Understanding the feeding ecology of the broadnose sevengill shark (Notorynchus cepedianus) in Patagonia, Argentina. Food Webs, 38, Article e00339 https://dx.doi.org/10.1016/j.fooweb.2024.e00339 Gajic, A.A. (2024) Exploring the elusive deep-sea sharpnose sevengill shark (Heptranchias perlo) in the Adriatic Sea: Novel records, health assessments and conservation implications. Aquatic Conservation, Marine and Freshwater Ecosystems, 34(3), Article e4122 https://dx.doi.org/10.1002/aqc.4122 García-Rodríguez, A. & Tovar-Avila, J. & Arellano-Cuenca, A.H. & Rivas-Landa, D. & Chávez-Arrenquin, D.A. & Amezcua, F. (2024) Size at sexual maturity, seasonal variation by maturity stages, and fecundity of the spotted round ray (Urobatis maculatus) and the thorny stingray (Urotrygon rogersi) from the northern tropical eastern Pacific. Journal of Fish Biology, in press https://dx.doi.org/10.1111/jfb.15709 Gayford, J.H. & Sternes, P.C. (2024) The origins and drivers of sexual size dimorphism in sharks. Ecology and Evolution, 14, Article e11163 https://dx.doi.org/10.1002/ece3.11163 Gilewski, A.L. & Flower, J.E. & Miller, L. & Tuttle, A.D. (2024) Effect of photobiomodulation therapy as a multimodal approach to treatment of dermal abrasions in cownose rays (Rhinoptera bonasus). Zoo Biology, in press https://dx.doi.org/10.1002/zoo.21832 Gobbato, J. & Parmegiani, A. & Seveso, D. & Galli, P. & Montano, S. (2024) New evidence of grey reef sharks (Carcharhinus amblyrhynchos) displaying chafing behaviors on whale shark (Rhincodon typus) individuals in the Maldives. Marine Biodiversity, 54(2), Article 34 https://dx.doi.org/10.1007/s12526-024-01430-y Gómez-Martínez, D. & Londoño-Cruz, E. & Mejia-Falla, P.A. (2024) Upper thermal tolerance and population implications for the Magdalena River stingray Potamotrygon magdalenae. Journal of Fish Biology, in press https://dx.doi.org/10.1111/jfb.15668 Gore, M. & Kohler, J. & Ormond, R. & Gallagher, A. & Fernandes, T. & Austin, T. & Pattengill-Semmens, C. (2024) Renewed occurrence of schooling scalloped hammerhead (Sphyrna lewini) and of great hammerhead (S. mokarran) sharks in the Cayman Islands. Frontiers in Marine Science, 11, Article 1347285 https://dx.doi.org/10.3389/fmars.2024.1347285 Harshan, P. & Sukumaran, S. & Gopalakrishnan, A. (2024) De novo transcriptome for Chiloscyllium griseum, a long-tail carpet shark of the Indian waters. Scientific Data, 11(1), Article 285 https://dx.doi.org/10.1038/s41597-024-03093-7 Hermans, A. & Winter, H.V. & Gill, A.B. & Murk, A.J. (2024) Do electromagnetic fields from subsea power cables effect benthic elasmobranch behaviour? A risk-based approach for the Dutch Continental Shelf. Environmental Pollution, 346, Article 123570 https://dx.doi.org/10.1016/j.envpol.2024.123570 Jung, A.R.L. & Ory, A. & Abaut, P. & Zaccagnini, L. (2024) First Use of Free-Diving Photo-Identification of Porbeagle Shark (Lamna nasus) off the Brittany Coast, France. Diversity, 16(3), Article 155 https://dx.doi.org/10.3390/d16030155 Jurado-Ruzafa, A. & Hernández-González, C. (2024) Length-weight relationships for seven fish species caught off Northwest Africa. Journal of the Marine Biological Association of the United Kingdom, 104, Article e36 https://dx.doi.org/10.1017/s0025315424000298 Kneebone, J. & White, C.F. & Collatos, C. & Whitney, N.M. (2024) High survivorship of sandbar sharks (Carcharhinus plumbeus) following catch and release in a growing land-based fishery in Massachusetts. Fishery Bulletin, 122(1-2), 1–12 https://dx.doi.org/10.7755/fb.122.1-2.1 Lear, K.O. & Ebner, B.C. & Fazeldean, T. & Bateman, R.L. & Morgan, D.L. (2024) Effects of coastal development on sawfish movements and the need for marine animal crossing solutions. Conservation Biology, in press https://dx.doi.org/10.1111/cobi.14263 Leeney, R.H. & Dreyer, N. (2024) Predation on the St Joseph Callorhinchus capensis by Cape fur seals Arctocephalus pusillus pusillus in Namibia. African Journal of Marine Science, in press https://dx.doi.org/10.2989/1814232X.2024.2329635 Lemos, L.D. & Bornatowski, H. & de Freitas, R.H.A. (2024) Dietary and niche analyses of four sympatric batoid species of the subtropical South Atlantic Ocean. Hydrobiologia, in press https://dx.doi.org/10.1007/s10750-024-05494-6 Lerner, J.E. & Hunt, B.P.V. (2024) Stable isotopes delineate regional pelagic food web structure in British Columbia's coastal ocean. Canadian Journal of Fisheries and Aquatic Sciences, 81(4), 368–386 https://dx.doi.org/10.1139/cjfas-2023-0057 Lofthus, A.J. & Beach-Mehrotra, M. & Fisher, M.R. & Wozniak, J.R. & Matich, P. (2024) Factors influencing the nursery dynamics of bull sharks Carcharhinus leucas in two estuaries along the Texas coast. Marine Ecology Progress Series, 728, 43–58 https://dx.doi.org/10.3354/meps14495 Madrigal-Mora, S. & Chavez, E.J. & Arauz, R. & Lowe, C.G. & Espinoza, M. (2024) Long-distance dispersal of the endangered Pacific nurse shark (Ginglymostoma unami, Orectolobiformes) in Costa Rica revealed through acoustic telemetry. Marine and Freshwater Research, 75(2), Article Mf23162 https://dx.doi.org/10.1071/mf23162 Marion, A.F.P. & Condamine, F.L. & Guinot, G. (2024) Sequential trait evolution did not drive deep-time diversification in sharks. Evolution, in press, Article qpae070 https://dx.doi.org/10.1093/evolut/qpae070 Mas, F. & Cortés, E. & Coelho, R. & Defeo, O. & Miller, P. & Carlson, J. & Gulak, S. & Domingo, A. (2024) Blue shark (Prionace glauca) movements, habitat use, and vertical overlap with longline fishing gears in the southwestern Atlantic Ocean. Marine Biology, 171, Article 106 https://dx.doi.org/10.1007/s00227-024-04421-6 Mattína, H. & Campana, S.E. & Jakobsdóttir, K. (2024) Environmental preferences and critical habitat for the velvet belly lanternshark (Etmopterus spinax) in Icelandic waters. Plos One, 19(3), Article e0299544 https://dx.doi.org/10.1371/journal.pone.0299544 Melgar-Martínez, N.M. & Ortega-García, S. & Santana-Hernández, H. & Jakes-Cota, U. & Galván-Magaña, F. & Villalobos, H. (2024) Environmental preferences and size variability of Carcharhinus falciformis (Müller & Henle 1839) caught by longline fleet in the Central Mexican Pacific. Regional Studies in Marine Science, 71, 9 https://dx.doi.org/10.1016/j.rsma.2024.103437 Minaglia, S. & Liegl, M. (2024) Moonless night sky increases Isistius species (cookiecutter shark) and live human contact. Plos One, 19(2), Article e0291852 https://dx.doi.org/10.1371/journal.pone.0291852 Montemagno, F. & Romano, C. & Bastoni, D. & Cordone, A. & De Castro, O. & Stefanni, S. & Sperone, E. & Giovannelli, D. (2024) Shark Microbiome Analysis Demonstrates Unique Microbial Communities in Two Distinct Mediterranean Sea Shark Species. Microorganisms, 12(3), Article 557 https://dx.doi.org/10.3390/microorganisms12030557 Mullins, L. & Cartwright, J. & Dykstra, S.L. & Evans, K. & Mareska, J. & Matich, P. & Plumlee, J.D. & Sparks, E. & Drymon, J.M. (2024) Warming waters lead to increased habitat suitability for juvenile bull sharks (Carcharhinus leucas). Scientific Reports, 14(1), Article 4100 https://dx.doi.org/10.1038/s41598-024-54573-0 Mulochau, T. & Durville, P. & Fricke, R. & Plantard, P. & Loisil, C. & Broudic, L. & Martigné, J.C. (2024) First records of nine fish species from Réunion Island observed during an inventory of the fauna of mesophotic zone. Cybium, in press https://dx.doi.org/10.31398/tpjf/30.2.2022-0021 Obayashi, Y. & Sumikawa, H. & Miyoshi, T. (2024) The hammerhead shark's cephalofoil reduces fluid moments during turning motion. Ichthyological Research, in press https://dx.doi.org/10.1007/s10228-024-00966-0 Ochi, D. & Okamoto, K. & Ueno, S. (2024) Multifaceted effects of bycatch mitigation measures on target or non-target species for pelagic longline fisheries and consideration for bycatch management. Marine and Freshwater Research, 75(2), Article Mf23148 https://dx.doi.org/10.1071/mf23148 Olmo-Gilabert, R. & Fagiano, V. & Alomar, C. & Rios-Fuster, B. & Compa, M. & Deudero, S. (2024) Plastic webs, the new food: Dynamics of microplastics in a Mediterranean food web, key species as pollution sources and receptors. Science of the Total Environment, 918, Article 170719 https://dx.doi.org/10.1016/j.scitotenv.2024.170719 Petean, F.F. & Yang, L. & Corrigan, S. & Lima, S.M.Q. & Naylor, G.J.P. (2024) How many lineages are there of the stingrays genus Hypanus (Myliobatiformes: Dasyatidae) and why does it matter?. Neotropical Ichthyology, 22(1), Article e230046 https://dx.doi.org/10.1590/1982-0224-2023-0046 Priester, C.R. & Dierking, J. & Hansen, T. & Abecasis, D. & Fontes, J.M. & Afonso, P. (2024) Trophic ecology and coastal niche partitioning of two sympatric shark species in the Azores (mid-Atlantic). Marine Ecology Progress Series, 726, 113–130 https://dx.doi.org/10.3354/meps14487 Regnier, T. & Dodd, J. & Benjamins, S. & Gibb, F.M. & Wright, P.J. (2024) Spatial management measures benefit the critically endangered flapper skate, Dipturus intermedius. Aquatic Conservation, Marine and Freshwater Ecosystems, 34(4), Article e4150 https://dx.doi.org/10.1002/aqc.4150 Reinero, F.R. & Micarelli, P. & Giglio, G. & Sperone, E. (2024) Evidence of macroplastic ingestion in the lesser spotted dogfish Scyliorhinus canicula from the central Tyrrhenian Sea. Cahiers de Biologie Marine, 65, 39–42 https://dx.doi.org/10.21411/CBM.A.BB63A956 Romero, J. & Alonso, H. & Freitas, L. & Granadeiro, J.P. (2024) Food web of the oceanic region of the archipelago of Madeira: The role of marine megafauna in the subtropical northeast Atlantic ecosystem. Marine Environmental Research, 195, Article 106382 https://dx.doi.org/10.1016/j.marenvres.2024.106382 Salem, A. & Abdelhedi, O. & Sebii, H. & Ben Taheur, F. & Fakhfakh, N. & Debeaufort, F. & Jridi, M. & Zouari, N. (2024) Enhancing the Quality of Refrigerated Smooth-Hound Shark Fillet with a Fish Gelatin Coating Enriched with Garden Cress Extract. Journal of Aquatic Food Product Technology, in press https://dx.doi.org/10.1080/10498850.2024.2320264 Schiønning, M.K. & Kroner1, A.-M. & Carl, H. & Møller, P.R. & Mildenberger, T.K. (2024) En guide til hajer og rokker i danske og tilstødende farvande [A guide to sharks and skates in Danish and adjacent waters]. DTU Aqua-rapport nr. 453-2024 https://dx.doi.org/10.11581/DTU.00000324 Schnetz, L. & Dunne, E.M. & Feichtinger, I. & Butler, R.J. & Coates, M.I. & Sansom, I.J. (2024) Rise and diversification of chondrichthyans in the Paleozoic. Paleobiology, in press https://dx.doi.org/10.1017/pab.2024.1 Shen, F.Y. & Shi, X.F. & Bi, D.J. & Huang, M. & Yu, M. & Li, J. & Zhang, Y. & Zhu, A.M. & Shi, F.D. & Liu, J.H. (2024) Geochemical characteristics of a ferromanganese nodule with a tooth nucleus from the northwestern Pacific: Implications for element migration between Fe-Mn (oxyhydr)oxide and biogenic apatite. Ore Geology Reviews, 166, Article 105925 https://dx.doi.org/10.1016/j.oregeorev.2024.105925 Shen, Y.F. & Hussey, N.E. & David, M. & Wu, F. & Li, Y.K. (2024) Vertebral microchemistry as an indicator of habitat use of the oceanic whitetip shark Carcharhinus longimanus in the central and eastern Pacific Ocean. Journal of Fish Biology, in press https://dx.doi.org/10.1111/jfb.15705 Siders, Z.A. & Trotta, L.B. & Patrone, W. & Caltabellotta, F.P. & Loesser, K.B. & Baiser, B. (2024) Predicting time-at-depth weighted biodiversity patterns for sharks of the North Pacific. Ecography, in press https://dx.doi.org/10.1111/ecog.07249 Skelton, Z.R. & Prinzing, T.S. & Nosal, A.P. & Vagner, Z. & Demman, P. & Zerofski, P.J. & Wegner, N.C. (2024) Observations of skin color aberrations in four shark species off the coast of southern California, USA. Environmental Biology of Fishes, 107(3), 391–400 https://dx.doi.org/10.1007/s10641-024-01532-3 Somerville, J. & Blount, J. & Stevens, M. (2024) The use of vision modelling to design bycatch reduction devices using light. Fish and Fisheries, in press https://dx.doi.org/10.1111/faf.12827 Suratno, S. & Wahono, S.K. & Siswanta, D. & Aprilita, N.H. (2024) Essential Elements in Muscle Tissue of Rhizoprionodon acutus and Sphyrna lewini from West Java Waters. Ocean Science Journal, 59(2), Article 15 https://dx.doi.org/10.1007/s12601-024-00138-1 Torralba Sáez, M. & Hofreiter, M. & Straube, N. (2024) Shark genome size evolution and its relationship with cellular, life-history, ecological, and diversity traits. Scientific Reports, 14, Article 8909 https://dx.doi.org/10.1038/s41598-024-59202-4 Tyabji, Z. & Jabado, R.W. & Akhilesh, K.V. & Kizhakudan, S.J. & MacNeil, M.A. (2024) Past and present sawfish (Pristidae) records. Endangered Species Research, 53, 523–532 https://dx.doi.org/10.3354/esr01318 Waldo, J.L. & Altamirano-Nieto, E. & Croll, D.A. & Palacios, M.D. & Lezama-Ochoa, N. & Lopez, J. & Moreno, G. & Rojas-Perea, S. & Cronin, M.R. (2024) Bycatch mitigation from the sky: using helicopter communication for mobulid conservation in tropical tuna fisheries. Frontiers in Marine Science, 11, Article 1303324 https://dx.doi.org/10.3389/fmars.2024.1303324 Wargat, B. & Morgan, C. & McCallister, M. & Frazier, B.S. & Gelsleichter, J. (2024) Identification of estuarine nursery habitat for young-of-year scalloped hammerhead sharks (Sphyrna lewini) in the Tolomato River, Florida, USA. Regional Studies in Marine Science, 70, Article 103396 https://dx.doi.org/10.1016/j.rsma.2024.103396 Weinrauch, A.M. & Bouyoucos, I.A. & Conlon, J.M. & Anderson, W.G. (2024) The chondrichthyan glucagon-like peptide 3 regulates hepatic ketone metabolism in the Pacific spiny dogfish Squalus suckleyi. General and Comparative Endocrinology, 350, Article 114470 https://dx.doi.org/10.1016/j.ygcen.2024.114470 Welch, H. & Clavelle, T. & White, T.D. & Cimino, M.A. & Kroodsma, D. & Hazen, E.L. (2024) Unseen overlap between fishing vessels and top predators in the northeast Pacific. Science Advances, 10(10), Article eadl5528 https://dx.doi.org/10.1126/sciadv.adl5528 West, K.M. & Harry, A.V. & Payet, S. & Harvey, E. & Rangers, D. & Rangers, B.J. & Rangers, K. & Managers, Y.C. & Travers, M.J. (2024) Comparative assessment of eDNA metabarcoding and longline deployments for elasmobranch surveying across a large tropical marine park network. Aquatic Conservation, Marine and Freshwater Ecosystems, 34(4), Article e4144 https://dx.doi.org/10.1002/aqc.4144 White, W.T. & Stewart, A.L. & O’Neill, H.L. & Naylor, G.J.P. (2024) Dichichthyidae, a New Family of Deepwater Sharks (Carcharhiniformes) from the Indo–West Pacific, with Description of a New Species. Fishes, 9, Article 121 https://dx.doi.org/10.3390/fishes9040121 Winkel, E.A.B. & Kristiansen, R. & Møller, P.R. & Lauridsen, H. (2024) Interactive three-dimensional atlas of the mineralized skeleton of the sand tiger shark Carcharias taurus. Royal Society Open Science, 11, Article 240287 https://dx.doi.org/10.1098/rsos.240287 Wosnick, N. & Schneider, E.V.C. (2024) Expanding records of occurrence of the whale shark (Rhincodon typus) in The Bahamas and a call for sustainable tourism practices. Journal of Fish Biology, in press https://dx.doi.org/10.1111/jfb.15740 Zhou, X.H. & Yang, A. & Miao, Z. & Zhang, W. & Wang, Q. & Macmillan, D.C. (2024) Consumer characteristics and preferences for mobulid gill plates in China. Conservation Biology, in press https://dx.doi.org/10.1111/cobi.14244 Extinct Chondrichthyes: Boles, Z.M. & Ullmann, P.V. & Putnam, I. & Ford, M. & Deckhut, J.T. (2024) New vertebrate microfossils expand the diversity of the chondrichthyan and actinopterygian fauna of the Maastrichtian–Danian Hornerstown Formation in New Jersey. Acta Palaeontologica Polonica, 69(2), 173–198 http://dx.doi.org/10.4202/app.01117.2023 Breeden, B.T. & Oyama, N. & Manabe, M. & Takahashi, H. & Sakata, C. (2024) A new freshwater lonchidiid hybodontiform shark (Chondrichthyes, Elasmobranchii) from the Upper Triassic Momonoki Formation in Yamaguchi, Japan. Journal of Vertebrate Paleontology, in press http://dx.doi.org/10.1080/02724634.2024.2322749 Charnelli, M. & Gouiric-Cavalli, S. & Reguero, M.A. & Cione, A.L. (2024) Middle Eocene chondrichthyan fauna from Antarctic Peninsula housed in the Museo de La Plata, Argentina. Advances in Polar Science, 35(1), 14–47 http://dx.doi.org/10.12429/j.advps.2023.0035 Cicimurri, D. & Ciampaglio, C. & Hoenig, M. & Shell, R. & Fuelling, L. & Peterman, D. & Cline, D.A. & Jacquemin, S.A. (2024) A Description of the New Hybodont Shark Genus, Columnaodus, from the Burlington and Keokuk Limestones (Carboniferous, Mississippian, Osagean) of Illinois and Iowa, USA. Diversity, 16(5), Article 276 http://dx.doi.org/10.3390/d16050276 Dillon, E.M. & Pimiento, C. (2024) Aligning paleobiological research with conservation priorities using elasmobranchs as a model. Paleobiology, in press http://dx.doi.org/10.1017/pab.2024.11 Feichtinger, I. & Pollerspöck, J. (2024) Haie und Rochen an der Kreide-Paläogen-Grenze. Fossilien, 3/2024, 48–57 http://dx.doi.org/ George, H. & Bazzi, M. & El Hossny, T. & Ashraf, N. & Saad, P.A. & Clements, T. (2024) The famous fish beds of Lebanon: the Upper Cretaceous Lagerstätten of Haqel, Hjoula, Nammoura, and Sahel Aalma. 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Historical Biology, in press http://dx.doi.org/10.1080/08912963.2024.2344813 Parasites: Ahmed, N. & Ghallab, A. & Shaalan, M. & Saied, M. & Mohammed, E.S. (2024) First molecular identification and phylogenetic illustration of Sarcocystis species infection in Red Sea shortfin mako shark (Isurus oxyrinchus Rafinesque, 1810). BMC Veterinary Research, 20(1), Article 104 http://dx.doi.org/10.1186/s12917-024-03952-w Bueno, V.M. & Trevisan, B. & Caira, J.N. (2024) Phylogeny of the cestode family Escherbothriidae (Cestoda: Rhinebothriidea) reveals unexpected patterns of association with skate hosts. Invertebrate Systematics, 38(4), Article Is23056 http://dx.doi.org/10.1071/is23056 Dallarés, S. & Kuchta, R. (2024) New species of Echinobothrium van Beneden, 1849 (Cestoda: Diphyllidea) from Indo-Pacific maskrays (Neotrygon Castelnau) off Australia and Borneo. Folia Parasitologica, 71, Article 3 http://dx.doi.org/10.14411/fp.2024.003 Ingelbrecht, J. & Lear, K.O. & Martin, S.B. & Lymbery, A.J. & Norman, B.M. & Boxshall, G.A. & Morgan, D.L. (2024) Ectoparasites of the critically endangered green sawfish Pristis zijsron and sympatric elasmobranchs in Western Australia. Parasitology International, in press http://dx.doi.org/10.1016/j.parint.2024.102900 Kefil, S. & Abla, S. & Bouguerche, C. & Yata, K. & Grellier, P. & Kechemir-Issad, N. (2024) Trypanosomes, a blood parasite of Rajidae (Elasmobranchii, Rajiformes) off the Algerian coast. Chelonian Research Foundation, 19(01), 149–161 http://dx.doi.org/ Youssef, F. & Benmansour, B. & Yurakhno, V.M. & Mansour, L. (2024) New marine leech species of Branchellion Savigny, 1822 (Hirudinida: Piscicolidae) and new host record of Pontobdella muricata in the Gulf of Tunis. Biologia, in press http://dx.doi.org/10.1007/s11756-024-01639-z |
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MISCELLANEOUS:
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Targeted measures could help protect endangered species with potentially minimal impact on the shipping industry
- Date: May 14, 2024
- Source: University of Southampton
- Summary: Heavily-used shipping lanes that pass through whale shark feeding grounds pose a threat to the species, according to scientists who have revealed areas where the creatures are at the highest risk.
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Researchers have come together to better understand the threat facing whale sharks."We have a duty to protect one of the world's most beautiful and charismatic species."
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![](https://mcusercontent.com/cafd0af5aa18ae43a0535f999/images/dafa5e6c-45fe-72df-b31f-1a2715c581ec.jpg)
New IUCN Shark News Newsletter is out! Download: https://www.iucnssg.org/shark-news.html
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