NEWSLETTER 01/2023 25.01.2023
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Pollerspöck, J. & Straube, N. 2023, Bibliography database of living/fossil sharks, rays and chimaeras (Chondrichthyes: Elasmobranchii, Holocephali), www.shark-references.com, World Wide Web electronic publication, Version 2023 |
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NEWS/ OWN RESEARCH
Please note!! The next newsletter will be published in March 2023!
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 Open Access! Staggl, M.A., Ruthensteiner, B. & Straube, N. (2023) Head anatomy of a lantern shark wet-collection specimen (Chondrichthyes: Etmopteridae). Journal of Anatomy, 00, 1– 19. Available from: https://doi.org/10.1111/joa.13822
ABSTRACT
In this study, we apply a two-step (untreated and soft tissue stained) diffusible iodine-based contrast-enhanced micro-computed tomography array to a wet-collection Lantern Shark specimen of Etmopterus lucifer. The focus of our scanning approach is the head anatomy. The unstained CT data allow the imaging of mineralized (skeletal) tissue, while results for soft tissue were achieved after staining for 120 h in a 1% ethanolic iodine solution. Three-dimensional visualization after the segmentation of hard as well as soft tissue reveals new details of tissue organization and allows us to draw conclusions on the significance of organs in their function. Outstanding are the ampullae of Lorenzini for electroreception, which appear as the dominant sense along with the olfactory system. Corresponding brain areas of these sensory organs are significantly enlarged as well and likely reflect adaptations to the lantern sharks' deep-sea habitat. While electroreception supports the capture of living prey, the enlarged olfactory system can guide the scavenging of these opportunistic feeders. Compared to other approaches based on the manual dissection of similar species, CT scanning is superior in some but not all aspects. For example, fenestrae of the cranial nerves within the chondrocranium cannot be identified reflecting the limitations of the method, however, CT scanning is less invasive, and the staining is mostly reversible and can be rinsed out.
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Pollerspöck, J. & Unger, E. (2022): „Beiträge zur Kenntniss der fossilen Fische aus der Molasse von Baltringen“ – Revision zum 200. Geburtstag von Pfarrer Josef Probst. Teil Batoidei (Probst 1877). Jahreshefte der Gesellschaft für Naturkunde Württemberg, 178, 149–204 Abstract: With the present first part of the study the ray species from the Molasse of Baltringen (Baden-Wuerttemberg, SW Germany) published by Probst (1877) are reinterpreted and taxonomically updated to the current state of knowledge. The main focus of this work is on the illustration originals or types deposited in the museum of the Eberhard Karls University of Tuebingen. The material was verified regarding completeness, inventoried and examined in detail. 32 types as well as 10 illustration originals could be found; 13 used or newly introduced species names were evaluated as nomina dubia, one species and one illustration original is a tooth or rostral spine of a shark (Raja grandis = Ginglymostoma delfortriei Daimeries, 1889; Pristis sp. = Pristiophorus suevicus Jaekel, 1890). Keywords: Batoidea, Miocene, Ottnangian, North Alpine Foreland Basin, Molasse. request please via ResearchGate or email
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Feichtinger, I. & Pollerspöck, J. & Harzhauser, M. & Auer, G. & Ćorić, S. & Kranner, M. & Guinot, G. (2022): Shifts in composition of northern Tethyan elasmobranch assemblages during the last millennia of the Cretaceous. Cretaceous Research, in press Article 105414
Extensive bulk sampling of seven horizons of a continuous succession deposited in an outer neritic environment of the latest Maastrichtian yielded more than three thousand ichthyoliths, including 1347 elasmobranch teeth. The sampled succession represents a characteristic deep-water fauna dominated by small squaliform sharks with an increase of species richness towards the end of the Cretaceous. The multidisciplinary approach of precise sampling in combination with a well-founded biostratigraphic classification of seven assemblages provides rare and direct evidence of diversity fluctuations within the latest Maastrichtian, immediately before the bolide impact triggered the severe mass extinction event at the K/Pg boundary. Although squaliform sharks dominate the fauna, a conspicuous heterogeneity of species abundance between the assemblages is observed and a noteworthy correlation between squaliform species richness and the abundance of Parasquatina zitteli (Orectolobiformes) might indicate clade competition for ecological niches. Among 15 elasmobranch species, this study describes one new genus (Fredipristis gen. nov.) and four new squaliform species (F. eximia gen. et sp. nov., Eoetmopterus davidi sp. nov., Proetmopterus lukasi sp. nov., and Cretascymnus beauryi sp. nov.), which highlights the importance and potential of bulk sampling for reconstructing elasmobranch diversity of deep-marine realms through time.
------------------------------ ------------------------------ ------------------------------ ------------------------------ 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 25269 (last month: 25175) references are changed. ------------------------------ ------------------------------ ------------------------------ ------------------------------
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NEW SECTION: From now on, we will report last month’s most popular three papers from our Shark References Facebook page:
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 (113 Likes/Emojis, 46 Shares):
Brée, B. & Condamine, F.L. & Guinot, G. 2022 Combining palaeontological and neontological data shows a delayed diversification burst of carcharhiniform sharks likely mediated by environmental change. Scientific Reports, 12, Article 21906
https://www.nature.com/articles/s41598-022-26010-7.pdf?pdf=button%20sticky
Estimating deep-time species-level diversification processes remains challenging. Both the fossil record and molecular phylogenies allow the estimation of speciation and extinction rates, but each type of data may still provide an incomplete picture of diversification dynamics. Here, we combine species-level palaeontological (fossil occurrences) and neontological (molecular phylogenies) data to estimate deep-time diversity dynamics through process-based birth–death models for Carcharhiniformes, the most speciose shark order today. Despite their abundant fossil record dating back to the Middle Jurassic, only a small fraction of extant carcharhiniform species is recorded as fossils, which impedes relying only on the fossil record to study their recent diversification. Combining fossil and phylogenetic data, we recover a complex evolutionary history for carcharhiniforms, exemplified by several variations in diversification rates with an early low diversity period followed by a Cenozoic radiation. We further reveal a burst of diversification in the last 30 million years, which is partially recorded with fossil data only. We also find that reef expansion and temperature change can explain variations in speciation and extinction through time. These results pinpoint the primordial importance of these environmental variables in the evolution of marine clades. Our study also highlights the benefit of combining the fossil record with phylogenetic data to address macroevolutionary questions.
Nr. 2 (66 Likes/Emojis, 9 Shares):
Szabó, M. & Kocsis, L. & Tóth, E. & Szabó, P. & Németh, T. & Sebe, K. 2022 Chondrichthyan (Holocephali, Squalomorphii and Batomorphii) remains from the Badenian of southern Hungary (Tekeres, Mecsek Mountains): the first deepwater cartilaginous fishes from the Middle Miocene of the Central Paratethys. Papers in Palaeontology, 8(6), Article e1471
https://onlinelibrary.wiley.com/doi/10.1002/spp2.1471
Thanks to Márton Szabó for sharing!
Middle Miocene (Badenian) chondrichthyan fossils collected from the Tekeres Schlieren Member of the Baden Formation at Tekeres (southern Hungary, Mecsek Mts) are described here. The chondrichthyan assemblage is exceptionally diverse and well-preserved, and consists of holocephalans, selachians and batomorphs. Nine taxa are reported for the first time from the Badenian of the Central Paratethys: Ischyodus sp., Hexanchus cf. nakamurai, Centrophorus sp., Isistius triangulus, Pristiophorus sp., Sphyrna integra, Raja cf. gentili, Dasyatis cf. pastinaca and Mobula fragilis. The fauna is characterized by many deepwater taxa, making it the first bathyal vertebrate assemblage of the Badenian Central Paratethys. However, typically shallow water, littoral forms are also present, which are worn and often broken, indicating that some of the Tekeres fauna was transported and redeposited from a shallow, coastal setting into deeper water environments. Rapid basin deepening and the resulting steep topography can be linked to ongoing rifting of the south-west Pannonian Basin. The majority of the studied chondrichthyan fauna have extant representatives in the Mediterranean, which supports an active faunal connection between the Mediterranean and the Central Paratethys via the Slovenian Corridor and the existence of a network of deepwater habitats at least along this pathway.
Nr. 3 (54 Likes/Emojis, 28 Shares):
#Echinorhinus cookei is a rare, large, demersal, deep-sea species of #shark inhabitant of the #Pacific Ocean basin. A sub-adult female with a total length of 262.7 cm was found naturally stranded in 2021 at Bahia de Los Angeles, Baja California, Central Gulf of California. It presents two spineless dorsal fins closer to the pelvic fins, large star-shaped dermal denticles, and distally oriented multi-cusplet cutting-type teeth. Along the shark, a peninsular coyote Canis latrans peninsulae was observed scavenging on the shark carcass. This study documents the first record of E. cookei in the Bahia de Los Angeles area and the first record of scavenging by the coyote C. latrans on any echinorhiniform shark to date.
Thanks to M. Sc. Jorge I. Rosales-Vásquez for this new open access paper!
Rosales-Vásquez, J.I. & Anislado-Tolentino, V. & Escárcega-Miranda, B. 2023 New record of the prickly shark Echinorhinus cookei (Pietschmann, 1928) and evidence of scavenging by the coyote Canis latrans (Say, 1823) in Bahia de Los Angeles, Baja California, Mexico. Aquatic Research, 6(1), 64–71
http://aquatres.scientificwebjournals.com/.../art.../2499965
https://shark-references.com/spe.../view/Echinorhinus-cookei
image: Neotype of E. cookei, Museum of New Zealand, Te Papa Tongarewa.
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New Images
Many thanks to the following people for providing images:
Frederik Mollen, Elasmobranch Research, Belgium for images of Carcharhinus leucas
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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:
Numano, M. (1993) Some Neogene shark-teeth from Mogami area, Yamagata Prefecture. Applied Geology of Yamagata, 13: 32–49
Extant Chondrichthyes:
Chu, Y.-T. (1930) A new species of the swallow ray (Pteroplatea) from China. China Journal, 12(6): 357.
Smith, J.L.B. (1958) The mystery killer, the new shark Carcharhinus vanrooyeni. Veld & Vlei, 3 (9): 12–14, 28.
Ishiyama, R. (1967) Fauna Japonica. Rajidae (Pisces). Biogeographical Society of Japan (Tokyo): i–vi, 1–82
Gubanov, E.P. & Schleib, N.A. (1980) Sharks of the Arabian Gulf. Kuwait Ministry of Public Works, Agracultural Department, Fisheries Division. Sharks of the Arabian Gulf.: 1–69
Deng, S.-M. & Xiong, G.-Q. & Zhan, H.-X. (1988) The deep water fishes of the east China Sea. Xue Lin Publishing house: 356 pp.
Dolganov, V.N. (1983) Rukovodstvo po opredeleniyu khryashchevykh ryb dal'nevostochnykh morei SSSR i sopredel'nykh vod. [Manual for identification of cartilaginous fishes of Far East seas of USSR and adjacent waters.] TINRO, Vladivostok. Rukovodstvo po opredeleniyu khryashchevykh ryb dal'nevostochnykh morei SSSR i sopredel'nykh vod.: 92 pp.
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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Upcoming Meetings:
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Fifth International Marine Protected Areas Congress
IMPAC5 is where we will come together and take a stand to protect the ocean.
Join us in Vancouver, Canada for the Fifth International Marine Protected Areas Congress (IMPAC5), a global forum that brings together ocean conservation professionals and high-level officials to inform, inspire and act on marine protected areas.
3-9 February 2023
Vancouver, Canada
#ProtectBlueNature
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The 4th Meeting of Signatories (MOS4) to the Memorandum of Understanding on the Conservation of Migratory Sharks (Sharks MOU) will take place from 28 February to 2 March 2023 in Bonn. The meeting will be hosted by the CMS Secretariat, United Nations Campus, Platz der Vereinten Nationen 1, 53113 Bonn, Germany.
Participation: The meeting will be open for Signatories. As per the Rules of Procedure, non-Signatory Range States, Cooperating Partners, the United Nations, its Specialized Agencies, non-Signatory States, or any relevant scientific, environmental, cultural, fisheries, or technical body, including governmental or non-governmental organizations, concerned with the conservation and management of sharks may participate as observers.
Logistical and other limitations may require that no more than two representatives of any observer be present at the meeting. The Secretariat will notify observers of such limitations 60 days before the meeting.
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Welcome
We look forward to welcoming you to the University of Auckland, located in the heart of Auckland city. We invite you to come and meet the people that live and work here, explore our beautiful city and hope that you leave with lasting friends, partnerships and memories.
The Organising Committee look forward to welcoming you to the 11th Indo-Pacific Fish Conference (IPFC) and Annual Conference of the Australian Society for Fish Biology, to be held 20-24 November 2023 at the University of Auckland, New Zealand.
The Indo-Pacific Fish Conference (IPFC), held every four years, is undoubtedly one of the world’s premier ichthyological conferences and is eagerly anticipated by marine, estuarine and freshwater fish enthusiasts alike.
The Australian Society for Fish Biology (ASFB), founded in 1971, aims to promote research, education and management of fish and fisheries across the Indo-Pacific.
We are excited to bring these two conference together in a joint meeting that will reflect the extraordinary biological, environmental and cultural diversity of the vast Indo-Pacific region.
Auckland is a modern city offering a variety of cultural experiences, accommodation and entertainment options for every taste and budget. The city is a key regional hub, with transport connections to multiple cities across New Zealand, Australia, the Pacific and beyond.
The University of Auckland is an internationally recognised university that provides outstanding conference facilities and conference support within easy walking distance of the city centre. An exciting programme of conference field trips will allow attendees to sample the diversity of regional marine and freshwater ecosystems. Before or after the conference, delegates could explore Auckland’s magnificent Hauraki Gulf and its beautiful islands. The jewel of the gulf is Waiheke Island, a haven of vineyards, olive groves, beaches and fine dining, just a 40-minute ferry ride from downtown Auckland. For an exciting day trip, discover the history and sandy coves of Rotoroa Island, explore the open wildlife sanctuary of Tiritiri Matangi Island or climb the volcanic cone of Rangitoto Island for incredible views from the summit. If you have a little more time, travel south for a summer holiday to discover the majestic Milford and Doubtful Sounds, encounter marine life in Abel Tasman National Park, enjoy New Zealand’s beautiful Bay of Islands, or maybe plan a field trip or tropical holiday on one of the many Pacific islands that are only a short flight away from Auckland.
We look forward to welcoming you to Auckland in 2023!
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TAXONOMIC NEWS/ NEW SPECIES
Extant Chondrichthyes:
no news this month!
Extinct Chondrichthyes:
Zhu, Y.A. & Li, Q. & Lu, J. & Chen, Y. & Wang, J.H. & Gai, Z.K. & Zhao, W.J. & Wei, G.B. & Yu, Y.L. & Ahlberg, P.E. & Zhu, M. (2022) The oldest complete jawed vertebrates from the early Silurian of China. Nature, 609(7929), 954–958
New genus: Shenacanthus
New species: Shenacanthus vermiformis
Abstract: Molecular studies suggest that the origin of jawed vertebrates was no later than the Late Ordovician period (around 450 million years ago (Ma))(1,2). Together with disarticulated micro-remains of putative chondrichthyans from the Ordovician and early Silurian period(3-8), these analyses suggest an evolutionary proliferation of jawed vertebrates before, and immediately after, the end-Ordovician mass extinction. However, until now, the earliest complete fossils of jawed fishes for which a detailed reconstruction of their morphology was possible came from late Silurian assemblages (about 425 Ma)(9-13). The dearth of articulated, whole-body fossils from before the late Silurian has long rendered the earliest history of jawed vertebrates obscure. Here we report a newly discovered Konservat-Lagerstatte, which is marked by the presence of diverse, well-preserved jawed fishes with complete bodies, from the early Silurian (Telychian age, around 436 Ma) of Chongqing, South China. The dominant species, a `placoderm' or jawed stem gnathostome, which we name Xiushanosteus mirabilis gen. et sp. nov., combines characters from major placoderm subgroups(14-17) and foreshadows the transformation of the skull roof pattern from the placoderm to the osteichthyan condition(10). The chondrichthyan Shenacanthus uermiformis gen. et sp. nov. exhibits extensive thoracic armour plates that were previously unknown in this lineage, and include a large median dorsal plate as in placoderms(14-16), combined with a conventional chondrichthyan bauplan(18,19). Together, these species reveal a previously unseen diversification of jawed vertebrates in the early Silurian, and provide detailed insights into the whole-body morphology of the jawed vertebrates of this period.
Andreev, P.S. & Sansom, I.J. & Li, Q. & Zhao, W.J. & Wang, J.H. & Wang, C.C. & Peng, L.J. & Jia, L.T. & Qiao, T. & Zhu, M. (2022) Spiny chondrichthyan from the lower Silurian of South China. Nature, 609(7929), 969–974
New genus: Fanjingshania
New species: Fanjingshania renovata
Abstract: Modern representatives of chondrichthyans (cartilaginous fishes) and osteichthyans (bony fishes and tetrapods) have contrasting skeletal anatomies and developmental trajectories(1-4) that underscore the distant evolutionary split(5-7 )of the two clades. Recent work on upper Silurian and Devonian jawed vertebrates(7-10) has revealed similar skeletal conditions that blur the conventional distinctions between osteichthyans, chondrichthyans and their jawed gnathostome ancestors. Here we describe the remains (dermal plates, scales and fin spines) of a chondrichthyan, Fanjingshania renovata gen. et sp. nov., from the lower Silurian of China that pre-date the earliest articulated fossils of jawed vertebrates(10-12). Fanjingshania possesses dermal shoulder girdle plates and a complement of fin spines that have a striking anatomical similarity to those recorded in a subset of stem chondrichthyans(5,7,13) (climatiid 'acanthodians'(14)). Uniquely among chondrichthyans, however, it demonstrates osteichthyan-like resorptive shedding of scale odontodes (dermal teeth) and an absence of odontogenic tissues in its spines. Our results identify independent acquisition of these conditions in the chondrichthyan stem group, adding Fanjingshania to an increasing number of taxa(7,15) nested within conventionally defined acanthodians(16). The discovery of Fanjingshania provides the strongest support yet for a proposed(7) early Silurian radiation of jawed vertebrates before their widespread appearance(5) in the fossil record in the Lower Devonian series.
Parasites:
Müller, M.I. & Adriano, E.A. & Oliveira, M.S.B. & Correa, L.L. (2022) Integrative taxonomy suggests that South American freshwater nematodes Echinocephalus and their host stingrays co-originated in late Oligocene to early Miocene. Journal of Helminthology, 96, Article e68
New species: Echinocephalus spinosus
Abstract: Nematoda of the genus Echinocephalus Molin, 1858 include species from the Gnathostomatidae family, the adult stages of which parasitize the stomach and spiral intestine of elasmobranchs as their final hosts. In the present study, we describe Echinocephalus spinosus n. sp. found parasitizing the spiral valve of the freshwater stingray Potamotrygon motoro from the Tapajos River, in the Amazon Basin, in the state of Para, Brazil. In the study we performed morphological (light and scanning electron microscopy) and molecular (small subunit ribosomal ribonucleic acid (SSU rDNA) and mitochondrial cytochrome c oxidase I sequencing) analyses. E. spinosus n. sp. is only the second species of the Echinocephalus genus described from a strictly freshwater environment. The SSU rDNA based phylogenetic analyses showed Echinocephalus clade as a sister lineage of Gnathostoma, and that the new species arises as a sister to Echinocephalus cf. pseudouncinatus. Time-calibrated phylogenetic analysis revealed that the origin of the freshwater Echinocephalus coincides with the recently proposed origin of the freshwater host potamotrygonin stingray, namely the late Oligocene to early Miocene, when the western Amazon was dominated by the Pebas wetlands, an epicontinental marine/freshwater system.
Gordeev, I.I. & Polyakova, T.A. (2023) Onchobothrium malakhovi n. sp. (Cestoda: Onchoproteocephalidea) ex Bathyraja (Arctoraja) sexoculata (Rajiformes: Arhynchobatidae) from Kuril Islands (Russia), with comments on the status of the genus Onchobothrium. Parasitology International, 93, Article 102709
New species: Onchobothrium malakhovi
Abstract: Onchobothrium malakhovi n. sp. was found in the spiral valve of the softnose skate Bathyraja (Arctoraja) sexoculata off the Simushir Island (Kuril Islands, Russia). The new species has bothridia with three loculi and no additional suckers on bothridia, single-toothed hooks unconnected by their bases, no spines at the bases of the hooks, dense matrix around the hook bases shaped as an unpaired butterfly wing, and a short and wide ovary. Onchobothrium malakhovi n. sp. differs from O. antarcticum and O. magnum in having a smaller total length, cirrus sac and ovary, smaller testes and eggs. Additionally, the new species differs from O. antarcticum by the absence of a vaginal sphincter and shorter bothridia; differs from O. magnum in having fewer proglottids and smaller vi-telline follicles. It differs from O. farmeri, O. convolutum, and O. pseudouncinatum, by the absence of a small spine at the base of the hooks and the absence of accessory suckers on bothridia; from O. pseudouncinatum, addi-tionally, by unconnected hooks; from O. schizacanthium, by the number of testes and by the presence of a postvaginal group of testes. Onchobothrium malakhovi n. sp. was placed among other members of the Oncho-proteocephalidea with a high support based on the sequence data for the D1-D3 region of the 28S rDNA and cox1 gene. The phylogenetic position of the genus Onchobothrium sensu lato remains ambiguous. We suggest that Onchobothrium sensu lato is a complex genus containing at least two morphologically different groups of species. Onchobothrium farmer, O. convolutum, O. schizacanthium, and O. pseudouncinatum, for which there are no mo-lecular genetic data, are considerably different morphologically from O. malakhovi n. sp., O. antarcticum, and O. magnum. A new genus might have to be established for the latter three species after the accumulation of genetic data.
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Latest Research Articles
Extant Chondrichthyes:
Akar, M.S. & Ulus, S.A. & Durgut, F. & Yigit, S. (2022): A technical trick for extracting a stingray spine from hand: a case report. Acta Orthopaedica Et Traumatologica Turcica, 56(5), 347–349 https://dx.doi.org/10.5152/j.aott.2022.21092
Archer, K.R. & Groll, T. & Harvey, R.J. & Thornton, S.M. & Stidworthy, M.F. & Denk, D. (2023): Case series: Lymphoid neoplasia in three elasmobranch species. Journal of Fish Diseases, in press https://dx.doi.org/10.1111/jfd.13742
Armada-Tapia, S. & Castillo-Geniz, J.L. & Victoria-Cota, N. & Arce-Valdes, L.R. & Enriquez-Paredes, L.M. (2023): First evidence of multiple paternity in the blue shark (Prionace glauca). Journal of Fish Biology, in press https://dx.doi.org/10.1111/jfb.15272
Basusta, N. & Ozel, F.V. (2022): Growth Characteristics of Long-Nosed Skate Dipturus oxyrinchus (Linnaeus, 1758) Inhabiting the Northeastern Mediterranean Sea. Animals, 12(23), Article 3443 https://dx.doi.org/10.3390/ani12233443
Benzik, A.N. & Chetyrkin, A.A. (2023): Diet Composition of Skates of the Barents Sea in 2004–2021. Journal of Ichthyology, 62(7), 1343–1351 https://dx.doi.org/10.1134/S0032945222070025
Bonnin, L. & Boussarie, G. & Kiszka, J.J. & Robbins, W. & Vigliola, L. (2023): Individual and seasonal variations of space use in silvertip sharks, Carcharhinus albimarginatus. Coral Reefs, in press https://dx.doi.org/10.1007/s00338-022-02332-w
Boyle, A. & Le Busque, B. (2022): Sharing the waves: An exploration of surfer and shark interactions. Marine Policy, 145, 4 https://dx.doi.org/10.1016/j.marpol.2022.105260
Chandelier, G. & Kiszka, J.J. & Dulau-Drouot, V. & Jean, C. & Poirout, T. & Estrade, V. & Barret, M. & Fayan, J. & Jaquemet, S. (2023): Isotopic niche partitioning of co-occurring large marine vertebrates around an Indian ocean tropical oceanic island. Marine Environmental Research, 183, Article 105835 https://dx.doi.org/10.1016/j.marenvres.2022.105835
Cooper, J.A. & Griffin, J.N. & Kindlimann, R. & Pimiento, C. (2023): Are shark teeth proxies for functional traits? A framework to infer ecology from the fossil record. Journal of Fish Biology, in press https://dx.doi.org/10.1111/jfb.15326
Cooper, R.L. & Nicklin, E.F. & Rasch, L.J. & Fraser, G.J. (2023): Teeth outside the mouth: The evolution and development of shark denticles. Evolution & Development, in press https://dx.doi.org/10.1111/ede.12427
Coxon, J.L. & Butcher, P.A. & Spaet, J.L.Y. & Rizzari, J.R. (2022): Preliminary Data about Habitat Use of Subadult and Adult White Sharks (Carcharodon carcharias) in Eastern Australian Waters (vol 11, 1443, 2022). Biology, 11(12), Article 1762 https://dx.doi.org/10.3390/biology11121762
Duchatelet, L. & Ho, H.C. & Mallefet, J. (2022): Photophore Morphogenesis and Extraocular Encephalopsin Expression during the Embryogenesis of Smalleye Pygmy Shark (Squaliolus aliae). Diversity, 14(12), Article 1100 https://dx.doi.org/10.3390/d14121100
Esposito, A. & Sasal, P. & Clua, E. & Meglecz, E. & Clerissi, C. (2022): Shark Provisioning Influences the Gut Microbiota of the Black-Tip Reef Shark in French Polynesia. Fishes, 7(6), Article 312 https://dx.doi.org/10.3390/fishes7060312
Fanelli, E. & Da Ros, Z. & Martino, I. & Azzurro, E. & Bargione, G. & Donato, F. & Lucchetti, A. (2023): Crowding in the middle of marine food webs: A focus on Raja asterias and other mediterranean batoids. Marine Environmental Research, 183, Article 105830 https://dx.doi.org/10.1016/j.marenvres.2022.105830
Fontes, J. & Macena, B. & Solleliet-Ferreira, S. & Buyle, F. & Magalhaes, R. & Bartolomeu, T. & Liebsch, N. & Meyer, C. & Afonso, P. (2022): The advantages and challenges of non-invasive towed PILOT tags for free-ranging deep-diving megafauna. Animal Biotelemetry, 10(1), 13 https://dx.doi.org/10.1186/s40317-022-00310-1
Grainger, R. & Raoult, V. & Peddemors, V.M. & Machovsky-Capuska, G.E. & Gaston, T.F. & Raubenheimer, D. (2023): Integrating isotopic and nutritional niches reveals multiple dimensions of individual diet specialisation in a marine apex predator. Journal of Animal Ecology, in press https://dx.doi.org/10.1111/1365-2656.13852
Grigorov, I.V. & Kivva, K.K. & Orlov, A.M. (2022): The Aleutians and Beyond: Distribution, Size Composition, and Catch Dynamics of the Aleutian Skate Bathyraja aleutica across the North Pacific. Animals, 12(24), Article 3507 https://dx.doi.org/10.3390/ani12243507
Haque, A.B. & Oyanedel, R. & Cavanagh, R.D. (2023): Mitigating elasmobranch fin trade: A market analysis for made-to-measure interventions. Science of the Total Environment, 862, Article 160716 https://dx.doi.org/10.1016/j.scitotenv.2022.160716
Harned, S.P. & Bernard, A.M. & Salinas-de-Leon, P. & Mehlrose, M.R. & Suarez, J. & Robles, Y. & Bessudo, S. & Ladino, F. & Garo, A.L. & Zanella, I. & Feldheim, K.A. & Shivji, M.S. (2022): Genetic population dynamics of the critically endangered scalloped hammerhead shark (Sphyrna lewini) in the Eastern Tropical Pacific. Ecology and Evolution, 12(12), Article e9642 https://dx.doi.org/10.1002/ece3.9642
Heldsinger, M. & Hepburn, C. & Jowett, T. & Rayment, W. (2023): Small marine reserves provide conservation benefits for coastal sharks in southern New Zealand. Aquatic Conservation, Marine and Freshwater Ecosystems, in press https://dx.doi.org/10.1002/aqc.3911
Hsu, H.H. & Nazeer, Z. & Panickan, P. & Lin, Y.J. & Qasem, A. & Rabaoui, L.J. & Qurban, M.A. (2022): Stomach Content Analysis for Juvenile Great Hammerhead Sharks Sphyrna mokarran (Ruppell, 1837) from the Arabian Gulf. Fishes, 7(6), Article 359 https://dx.doi.org/10.3390/fishes7060359
Huang, X.M. & Gao, H.C. & Li, Z.Z. & Wu, F. & Gong, Y. & Li, Y.K. (2022): Microplastic contamination and risk assessment in blue shark (Prionace glauca) from the eastern tropical Pacific Ocean. Marine Pollution Bulletin, 184, Article 114138 https://dx.doi.org/10.1016/j.marpolbul.2022.114138
Juan-Jorda, M.J. & Murua, H. & Arrizabalaga, H. & Merino, G. & Pacoureau, N. & Dulvy, N.K. (2022): Seventy years of tunas, billfishes, and sharks as sentinels of global ocean health. Science, 378(6620), Article 617 https://dx.doi.org/10.1126/science.abj0211
Kintsu, H. & Kodama, K. & Horiguchi, T. (2023): Spatial distributions of and species differences in 90Sr accumulation in marine fishes from the Fukushima coastal region. Journal of Environmental Radioactivity, 256, Article 107055 https://dx.doi.org/10.1016/j.jenvrad.2022.107055
Kumar, M.K. & Jayakumar, N. & Karuppasamy, K. & Manikandavelu, D. & Uma, A. (2022): An Annotated Checklist of Elasmobranchs Along the Coromandel Coast of Tamil Nadu, Southeast Coast of India. Indian Journal of Animal Research, 56(9), 1164–1169 https://dx.doi.org/10.18805/ijar.b-4281
Lesturgie, P. & Laine, H. & Suwalski, A. & Chifflet-Belle, P. & Delser, P.M. & Clua, E. & Jaquemet, S. & Magalon, H. & Mona, S. (2022): Ecological and biogeographic features shaped the complex evolutionary history of an iconic apex predator (Galeocerdo cuvier). BMC Ecology and Evolution, 22(1), Article 147 https://dx.doi.org/10.1186/s12862-022-02100-y
Leung, A.J.X. & Then, A.Y.H. & Loh, K.H. (2023): Reproductive biology, length-weight relationship and diet of co-occurring butterfly rays, Gymnura poecilura and Gymnura zonura, in Malaysian waters. Journal of Fish Biology, in press https://dx.doi.org/10.1111/jfb.15288
Lipscombe, R.S. & Scott, A. & Morris, S. & Peddemors, V.M. & Smoothey, A.F. & Butcher, P.A. (2023): The influence of bait position on the catch of target and non-target sharks in a SMART drumline bather protection program. Fisheries Research, 257, Article 106501 https://dx.doi.org/10.1016/j.fishres.2022.106501
Madiga, D.J. & Devine, B.M. & Webe, S.B. & Young, A.L. & Hussey, N.E. (2022): Combining telemetry and fisheries data to quantify species overlap and evaluate bycatch mitigation strategies in an emergent Canadian Arctic fishery. Marine Ecology Progress Series, 702, 1–17 https://dx.doi.org/10.3354/meps14212
Matsui, S. & Nakamura, O. & Tsutsui, S. (2023): Unique properties of prothrombin in the bullhead shark Heterodontus japonicus: the first report of purification and characterization of a blood coagulation factor in Chondrichthyes. Journal of Comparative Physiology B-Biochemical Systems and Environmental Physiology, in press https://dx.doi.org/10.1007/s00360-022-01472-3
Moutopoulos, D.K. & Lazari, E. & Katselis, G. & Giovos, I. (2022): From Extermination to Conservation: Historical Records of Shark Presence during the Early and Development Phase of the Greek Fishery. Animals, 12(24), Article 3575
Nikolic, N. & Devloo-Delva, F. & Bailleul, D. & Noskova, E. & Rougeux, C. & Delord, C. & Borsa, P. & Liautard-Haag, C. & Hassan, M. & Marie, A.D. & Feutry, P. & Grewe, P. & Davies, C. & Farley, J. & Fernando, D. & Biton-Porsmoguer, S. & Poisson, F. & Parker, D. & Leone, A. & Aulich, J. & Lansdell, M. & Marsac, F. & Arnaud-Haond, S. (2023): Stepping up to genome scan allows stock differentiation in the worldwide distributed blue shark Prionace glauca. Molecular Ecology, in press https://dx.doi.org/10.1111/mec.16822
Orlov, A.M. & Volvenko, I.V. (2022): Long-Term Changes in the Distribution and Abundance of Nine Deep-Water Skates (Arhynchobatidae: Rajiformes: Chondrichthyes) in the Northwestern Pacific. Animals, 12(24), Article 3485 https://dx.doi.org/10.3390/ani12243485
Piacenza, S.E.H. & Piacenza, J.R. & Faller, K.J. & Robinson, N.J. & Siegfried, T.R. (2022): Design and fabrication of a stereo-video camera equipped unoccupied aerial vehicle for measuring sea turtles, sharks, and other marine fauna. Plos One, 17(10), Article e0276382 https://dx.doi.org/10.1371/journal.pone.0276382
Pratt, H.L. & Pratt, T.C. & Knotek, R.J. & Carrier, J.C. & Whitney, N.M. (2022): Long-term use of a shark breeding ground: Three decades of mating site fidelity in the nurse shark, Ginglymostoma cirratum. Plos One, 17(10), Article e0275323 https://dx.doi.org/10.1371/journal.pone.0275323
Rambahiniarison, J. & Agustines, A. & Alexopoulos, K. & Araujo, G. & Armstrong, A.O. & Arnold, S. & Barruga, A. & Canete, T. & Conales, S. & Delijero, K. & Enolva, N.P. & Flam, A.L. & Keane, E. & Labaja, J. & Legaspi, C.G. & Murie, C. & Murray, R. & Oliver, S.P. & Pierce, S.J. & Ponzo, A. & Rohner, C.A. & Schifferer, R. & Snow, S. & Spakowski, M. & Stevens, G.M.W. & Tilgel, T. & Wong, J.N.C. & Yaptinchay, A.A. & Barr, Y. (2023): Distribution of the reef manta ray Mobula alfredi and the oceanic manta ray Mobula birostris in the Philippines: a collaborative effort for conservation. Journal of Fish Biology, in press https://dx.doi.org/10.1111/jfb.15283
Rangel, B.S. & Afonso, A.S. & Bettcher, V. & Bucair, N. & Andres, N. & Veras, L.B. & Hazin, F.H.V. & Garla, R. (2023): Evidence of mating scars in female tiger sharks (Galeocerdo cuvier) at the Fernando de Noronha Archipelago, Brazilian Equatorial Atlantic. Environmental Biology of Fishes, in press https://dx.doi.org/10.1007/s10641-022-01380-z
Raoult, V. & Pirotta, V. & Gaston, T.F. & Norman, B. & Reynolds, S. & Smith, T.M. & Double, M. & How, J. & Hayward, M.W. (2023): Widespread exposure of marine parks, whales, and whale sharks to shipping. Marine and Freshwater Research, 74(1), 75–85 https://dx.doi.org/10.1071/mf22050
Reinero, F.R. & Becerril-García, E.E. & Elorriaga-Verplancken, F.R. & Melo-Barrera, F.N. & Toraldo-Serra, M.L. & Giglio, G. & Micarelli, P. & Tripepi, S. & Galván-Magaña, F. & Sperone, E. (2023): Stable isotopes provide evidence of a trophic shift in the lesser spotted dogfish Scyliorhinus canicula from the Central Tyrrhenian Sea. Mediterranean Marine Science, 24(1), 1–6 https://dx.doi.org/10.12681/mms.27931
Rodriguez-Arrizabalaga, M. & Hernandez-Nunez, I. & Candal, E. & Barreiro-Iglesias, A. (2023): Use of vivo-morpholinos for gene knockdown in the postnatal shark retina. Experimental Eye Research, 226, Article 109333 https://dx.doi.org/10.1016/j.exer.2022.109333
Rosales-Vásquez, J.I. & Anislado-Tolentino, V. & Escárcega-Miranda, B. (2023): New record of the prickly shark Echinorhinus cookei (Pietschmann, 1928) and evidence of scavenging by the coyote Canis latrans (Say, 1823) in Bahia de Los Angeles, Baja California, Mexico. Aquatic Research, 6(1), 64–71 https://dx.doi.org/10.3153/AR23007
Sandoval-Ramírez, A. & Moreno-Díaz, G. & Rojas-Herrera, A.A. & Violante-González, J. & Loyo-De la Paz, L.J. & & Cerdenares-Ladrón de Guevara, G. (2022): Trophic ecology of neonates and juveniles of the silky shark, Carcharhinus falciformis, off the coast of Guerrero, Mexico. Ciencias Marinas, 48(1), Article 2022.3201 https://dx.doi.org/10.7773/cm.y2022.3201
Santos, S.R. & Takatsuka, V. & Bonatelli, S.P. & Amaral, N.L.L. & Goes, M.F. & Valle, R.F. (2022): Courtship and Reproduction of the Whitetip Reef Shark Triaenodon obesus (Carcharhiniformes: Carcharhinidae) in an Ex Situ Environment, with a Description of the Late Embryonic Developmental Stage. Animals, 12(23), Article 3291 https://dx.doi.org/10.3390/ani12233291
Sauer, D.J. & Yopak, K.E. & Radford, C.A. (2022): Ontogenetic development of inner ear hair cell organization in the New Zealand carpet shark Cephaloscyllium isabellum. Frontiers in Ecology and Evolution, 10, Article 1034891 https://dx.doi.org/10.3389/fevo.2022.1034891
Schärer-Umpierre, M. & Franqui-Rivera, G. (2023): First confirmed location of Carcharhinus signatus in Puerto Rico. Journal of the Marine Biological Association of the United Kingdom, in press https://dx.doi.org/10.1017/S0025315422000881
Silkin, Y.A. & Silkin, M.Y. & Korotkov, S.M. & Silkina, E.N. & Silkina, A. (2022): Erythrocyte Respiratory Activity of the Mitochondrial Complex of the Black Sea Thornback Ray (Raja clavata L.) under the Influence of Certain Activators and Inhibitors In Vitro. Fishes, 7(6), Article 376 https://dx.doi.org/10.3390/fishes7060376
Tuya, F. & Perez-Neira, F. & Espino, F. & Bosch, N.E. & Meyers, E.K.M. & Jimenez-Alvarado, D. & Castro, J.J. & Sobral, A. & Otero-Ferrer, F. & Haroun, R. (2022): Coastal sharks and rays in the Northeastern Atlantic: From an urgent call to collect more data to the declaration of a marine corridor. Global Ecology and Conservation, 38, Article e02261 https://dx.doi.org/10.1016/j.gecco.2022.e02261
Ugoretz, J. & Hellmers, E.A. & Coates, J.H. (2022): Shark incidents in California 1950-2021; frequency and trends. Frontiers in Marine Science, 9, Article 1020187 https://dx.doi.org/10.3389/fmars.2022.1020187
van Staden, M. & Ebert, D.A. & da Silva, C. & Bester-van der Merwe, A.E. (2022): Comparative analyses of the complete mitochondrial genomes of two southern African endemic guitarfish, Acroteriobatus annulatus and A. blochii. International Journal of Biological Macromolecules, 223, 1094–1106 https://dx.doi.org/10.1016/j.ijbiomac.2022.10.285
Vazquez, D.M. & Awruch, C.A. & Lucifora, L.O. & de Astarloa, J.M.D. & Mabragana, E. (2022): Embryonic development timeline in skates (Chondrichthyes: Rajiformes): Sympterygia acuta as the first case study in the family Arhynchobatidae. Zoology, 155, Article 126057 https://dx.doi.org/10.1016/j.zool.2022.126057
Vidal, A. & Cardador, L. & Garcia-Barcelona, S. & Macias, D. & Druon, J.N. & Coll, M. & Navarro, J. (2023): The relative importance of biological and environmental factors on the trophodynamics of a pelagic marine predator, the blue shark (Prionace glauca). Marine Environmental Research, 183, Article 105808 https://dx.doi.org/10.1016/j.marenvres.2022.105808
Wheeler, C.R. & Lang, B.J. & Mandelman, J.W. & Rummer, J.L. (2022): The upper thermal limit of epaulette sharks (Hemiscyllium ocellatum) is conserved across three life history stages, sex and body size. Conservation Physiology, 10(1), Article coac074 https://dx.doi.org/10.1093/conphys/coac074
Zhao, J.F. & Li, C.H. & Wang, T. & Li, C.R. & Shen, J.Z. & Liu, Y. & Wu, P. (2022): Distribution Pattern of Mangrove Fish Communities in China. Biology, 11(12), Article 1696 https://dx.doi.org/10.3390/biology11121696
Extinct Chondrichthyes:
Brée, B. & Condamine, F.L. & Guinot, G. (2022): Combining palaeontological and neontological data shows a delayed diversification burst of carcharhiniform sharks likely mediated by environmental change. Scientific Reports, 12, Article 21906 https://dx.doi.org/10.1038/s41598-022-26010-7
Feichtinger, I. & Kindlimann, R. & Guinot, G. & Harzhauser, M. & Pollerspöck, J. (2023): First record of the somniosid shark Protoxynotus misburgensis from the Santonian (Late Cretaceous) of the Southern Tethyan Realm. Historical Biology, in press https://dx.doi.org/10.1080/08912963.2022.2162401
Pochat-Cottilloux, Y. & Allain, R. & Lasseron, M. (2022): Microvertebrate fauna from Gadoufaoua (Niger, Aptian, Early Cretaceous). Comptes Rendus Palevol, 21(41), 901–926 https://dx.doi.org/10.5852/cr-palevol2022v21a41
Szabó, M. & Kocsis, L. & Tóth, E. & Szabó, P. & Németh, T. & Sebe, K. (2022): Chondrichthyan (Holocephali, Squalomorphii and Batomorphii) remains from the Badenian of southern Hungary (Tekeres, Mecsek Mountains): the first deepwater cartilaginous fishes from the Middle Miocene of the Central Paratethys. Papers in Palaeontology, 8(6), Article e1471 https://dx.doi.org/10.1002/spp2.1471
Wilk, O. & Szrek, P. & Ginter, M. (2023): Environmental differentiation reflected by vertebrate faunal diversity in the Lower Devonian of the Holy Cross Mountains, Poland. Geological Quarterly, in press https://dx.doi.org/10.7306/gq.1667
Parasites:
Cielocha, J.J. & Martinez, E. & Jackson, A. & Yoneva, A. (2022): Characterization of Spermatozoon Ultrastructure in Tetragonocephalum sp. (Cestoda: Lecanicephalidea: Tetragonocephalidae) from the Whipray, Urogymnus asperrimus 1 (Dasyatidae: Urogymninae). Journal of Parasitology, 108(5), 500–510 https://dx.doi.org/10.1645/22-42
Gordeev, I.I. & Polyakova, T.A. (2023): Onchobothrium malakhovi n. sp. (Cestoda: Onchoproteocephalidea) ex Bathyraja (Arctoraja) sexoculata (Rajiformes: Arhynchobatidae) from Kuril Islands (Russia), with comments on the status of the genus Onchobothrium. Parasitology International, 93, Article 102709 https://dx.doi.org/10.1016/j.parint.2022.102709
Munoz, G. & Hernandez, S. & Lopez, Z. (2023): A new parasitic copepod species of Tautochondria (Siphonostomatoida: Hyponeoidae), found in the narrowmouthed catshark Schroederichthys bivius from the Strait of Magellan. Parasitology International, 92, Article 102694 https://dx.doi.org/10.1016/j.parint.2022.102694
Penades-Suay, J. & Jarque-Rico, A.E. & Tomas, J. & Aznar, F.J. (2022): Determinants of diversity and composition of the tapeworm fauna of blue sharks, Prionace glauca: a geographical and host-specificity analysis. Journal of Helminthology, 96, Article e87 https://dx.doi.org/10.1017/s0022149x22000803
Youssef, F. & Benmansouand, B. & Ramdane, Z. (2022): New host-parasite associations of Cymothoidae (Crustacea, Isopoda) infesting elasmobranch fishes in Tunisian waters. African Journal of Marine Science, 44(4), 341–351 https://dx.doi.org/10.2989/1814232x.2022.2141321
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MISCELLANEOUS:
Beyond Jaws
New episode of the podcast Beyond Jaws!
The Manta Trust is working to protect manta rays and devil rays
Guy Stevens joins Dr, David Ebert and Andrew Lewin for this episode to discuss how he founded the Manta Trust in the Maldives and why he grew it to an international organization with collaborators and partners doing great work revealing more...
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New IUCN Shark News Newsletter is out!
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