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Newsletter 2/2025

 
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NEWSLETTER 2/2025 20.2.2025

 
 
Please acknowledge use of the database www.shark-references.com in your publications, and cite: 

Pollerspöck, J. & Straube, N. 2025, Bibliography database of living/fossil sharks, rays and chimaeras (Chondrichthyes: Elasmobranchii, Holocephali), www.shark-references.com, World Wide Web electronic publication, Version 2025
 

New publication authored by J. Pollerspöck, team shark-references! Open access.

Pollerspöck, J., Unger, E. (2024). „Beiträge zur Kenntniss der fossilen Fische aus der Molasse von Baltringen“ – Revision zum 200. Geburtstag von Pfarrer Josef Probst. Teil Hayfische (Selachoidei A. Günther) (Schluss) (Probst 1879). Jahreshefte der Gesellschaft für Naturkunde Württemberg, 180, 401–500.

   
open access!


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Shark reference custom search tool and maintenance

Update to Phase 1!

In the meantime, our programmer has been able to programme a version of the necessary software so that our pdf's can be read and the text imported into the database. The first attempts are promising. In the meantime, the text of around 10000 articles has been imported into the database. We expect to be able to complete this process by the end of the April. Then, in a second step, the search function at shark-references will be expanded.

Our sincere thanks to all donors!!!

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!


 
 
 
 

 
 
 

NEW PARTNERS OF SHARK-REFERENCES

 

Would you like to become a shark-reference partner? Please contact us per E-mail!

 

Upcoming Meetings:

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AES Meeting

July 9-13th 2025
St. Paul River Centre Convention Center
St. Paul, MN

President: Jim Gelsleichter
Secretary: Bryan Frazier
Treasurer: Tonya Wiley
Conference Chair: Chip Cotton
Immediate past-president: Mikki McComb-Kobza
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INTERNATIONAL BASKING SHARK CONFERENCE | 2025

There has been increasing global interest in basking shark distribution, population status, and sightings trends in recent decades, coinciding with new technologies and methods for monitoring highly mobile marine species. Additionally, there is growing consensus that international coordination is required to manage and conserve this endangered species. The IBSG and the National Parks and Wildlife Service therefore plan to organise and host an International Basking Shark Conference in Galway, Ireland from May 9 - 11, 2025, to coincide with the basking shark season here. The goals of this conference are interdisciplinary:

            1) to create a global discussion of ongoing research
            2) to encourage international collaboration and data sharing
            3) to highlight the unique cultural history of the species.

To this end, while we will prioritize the attendance of researchers, the conference will be accessible to non-scientists as well. 
https://www.baskingshark.ie/conference2025

 

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The annual meeting of the Asian Society of Ichthyologists and the Indo-Pacific Fish Conference will return to their regular schedule post-COVID-19. The most recent meetings were successfully held at Universiti Sains Malaysia in Penang, Malaysia, on May 28-29, 2024, and at the University of Auckland, New Zealand, on November 20-24, 2023. We are pleased to inform you that the upcoming joint conference, combining these two prestigious ichthyological events, will take place in Taipei, Taiwan, from June 9-13, 2025.

On behalf of the organizing committee, we welcome ichthyologists from around the world who are interested in sharing research about the systematics and ecology of Asian and Indo-Pacific fishes, including topics such as evolution, biogeography, taxonomy, ecology, biology, sustainable fisheries, and conservation. We look forward to the opportunity for the ASI to meet with the IPFC and are especially happy to do so in Taipei. The conference will provide an excellent opportunity to share the latest research results, develop collaborations, and promote research.

more information
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Registrations are open for the second edition of the workshop “Sharks of the Maldives: Introduction to field-based research and monitoring techniques” which will take place on the Liveaboard M/Y Island Safari 2 in the Central Atolls of the Maldives from the 5 to the 12 April 2025. The workshop is realised through the collaboration of MaRHE Center of the University of Milano-Bicocca, with Shark Research Mexico and White Wave Maldives. During this workshop, participants will work alongside marine scientists on a scientific expedition in the Maldives, where they will learn, dive and train in scientific monitoring techniques. The goal of this expedition is to introduce you to both theoretical knowledge and the practical skills necessary for conducting, assisting and supporting research projects focused on shark population surveys and data collection.
The workshop will be carried in English out through theoretical lessons and practical activities through SCUBA diving. It is requested to have an Advanced open water license and at least 30 logged dives. Registrations are open until 19th January 2025
Click https://marhe.unimib.it/activities/education/sharks-of-the-maldives/ for the full program and registrations. For info write to workshop.marhe@unimib.it or davide.seveso@unimib.it
 

Most popular posts at 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 (52 Likes/Emojis, 11 Shares):

Thanks to Jesco Seifert for this new open access paper about a record of the African dwarf sawshark Pristiophorus nancyae.

Seifert, J. 2025 A new record of the African dwarf sawshark Pristiophorus nancyae (Chondrichthyes: Pristiophoridae) from the Indian Ocean dating back to the 1960s. World Journal of Biology Pharmacy and Health Sciences, 21(01), 482–490
https://journalwjbphs.com/.../fullte.../WJBPHS-2025-0086.pdf
https://shark-references.com/.../view/Pristiophorus-nancyae

Abstract: The African dwarf sawshark (Pristiophorus nancyae) is a small representative of the sawshark family (Pristiophoridae). It was described in 2011 based on 8 individuals from Mozambique. In 2014 and 2020, these records were supplemented by 15 more specimens. Nevertheless, the African dwarf sawshark remains one of the least studied species in its already poor studied family. A new record of an aged juvenile specimen of the African dwarf sawshark allows us to expand the previously known knowledge about this shark species. In addition, the specimen examined represents the earliest known record of P. nancyae, as the individual in question was caught in the 1960s - approximately 50 years before the first description in 2011. The publication of new images is intended to supplement the previously known information about the appearance of the African dwarf sawshark and explicitly show the tooth morphology of this shark species.

Nr. 2 (52 Likes/Emojis, 11 Shares):

just published, last part of our Probst revision (in German)
Pollerspöck, J., Unger, E. (2024). „Beiträge zur Kenntniss der fossilen Fische aus der Molasse von Baltringen“ – Revision zum 200. Geburtstag von Pfarrer Josef Probst. Teil Hayfische (Selachoidei A. Günther) (Schluss) (Probst 1879). Jahreshefte der Gesellschaft für Naturkunde Württemberg, 180, 401–500.
free download via researchgate:
https://www.researchgate.net/.../388884556_Beitrage_zur...
Abstract: With the third and last part of this study, the species of sharks from the Molasse of Baltringen published by Probst (1879) are reinterpreted and taxonomically brought to the current state of knowledge. The main focus of the work is on the illustration originals or types deposited in the museum of the Eberhard Karls University of Tuebingen. The material was verified for completeness, inventoried and examined in detail. 72 types and 56 illustration originals could be found. Four teeth (one illustration original, two syntypes and one holotype) could no longer be located, namely Probst’s plate 2 fig. 65 (Lamna (Odontaspis) crassidens), plate 3 fig. 19 (Notidanus repens), plate 3 fig. 25 (Scyllium distans) and plate 3 fig. 33 (Acanthias serratus). For the valid species Isurus retroflexus (Agassiz, 1838) a neotype is defined according to the International Rules of Zoological Nomenclature. The fossil genus Araloselachus is now assigned to the family Carchariidae due to the extensive morphological similarities to the genus Carcharias. With the two identified valid species Carcharias reticulata and Carcharias crassidens, the number of occurring species of the family Carchariidae (sand tiger sharks) doubles from two to four. The described species Centrophorus radicans (Probst, 1879) is considered valid until a revision of the Miocene species of this genus and the synonymisation with the recent species Centrophorus granulosus (Bloch & Schneider, 1801) is rejected.

Nr. 3 (42 Likes/Emojis, 5 Shares):
open access!

Although there is now good representation of shark-bitten bone in the fossil record, shark-bitten shark teeth are still exceedingly rare. A relatively small number of teeth of the Neogene megatooth shark Otodus megalodon (Otodontidae) preserve surface markings that were made when struck by the serrated cutting edge of another O. megalodon tooth. The serration marks are consistent with those of the ichnotaxon Knethichnus parallelum. That these shallowly penetrating surface trace fossils were made as one O. megalodon tooth struck another is confirmed by the preservation of fine parallel gouges made when the serrated cutting edge of one tooth impacted and raked the surface of the receiving tooth. The K. parallelum marks on O. megalodon teeth could have been unintentionally self-inflicted, the result of one tooth striking another in the opposing jaw during forceful occlusion, collateral damage from feeding, or aggressive O. megalodon- on-O. megalodon facial biting (i.e., either from active predatory cannibalism, a feeding frenzy during scavenging, or as a result of a territorial dispute to establish a feeding hierarchy).

Godfrey, S.J. & Bennett, M. & Perez, V.J. 2024 Taphonomic and ecological insights from conspecific bite marks on Otodus megalodon teeth. Acta Palaeontologica Polonica, 69(4), 731–736
https://www.app.pan.pl/archive/published/app69/app0118...

Thanks to Victor Perez for sharing!
 

New Images

Many thanks to the following people for providing images:

T. Reinecke, Bochum for images of Anomotodon sheppeyensis (Casier, 1966)


John Thijssen & Ilse DeLaet for a image of Galeocorax jaekeli (Woodward, 1895)
 
 

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:  Silva, E.M. & Gallo, V. (2002): New occurrence of Myliobatiformes (Chondrichthyes: Batoidea) in the Maria Farinha Formation, Paleocene of the Pernambuoc-Paraiba Basin, Northeastern Brazil. Boletim do Museu Nacional, 65, 1–11
new entry:  Santos, R.S.  (1968): A paleoictiofauna da formacao Santana - Euselachii. Anais da Academia Brasileira de Ciências, 40(4), 491–497



Extant Chondrichthyes:

new entry:  Gosztonyi, A.E. (1973) Sobre el dimorfismo sexual secundario en Halaelurus bivius (Müller y Henle, 1841) Garman 1913 (Elasmobranchii, Scyliorhinidae) en aguas Pagagonico-Fueguinas. Physis, A, 32(85), 317–323

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.


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



 
 
 
TAXONOMIC NEWS/ NEW SPECIES


Extant Chondrichthyes:
no news this month

Extinct Chondrichthyes:

Saugen, S.M. & Roberts, A.J. & Engelschion, V.S. & Hurum, J.H. (2025): A new assemblage of Lower Triassic neoselachians (Chondrichthyes) from the Grippia Bonebed of Spitsbergen, Norway. Journal of Vertebrate Paleontology, in press
New genus: Wimanodon, Eorapax
New species: Synechodus rotheliusi, Wimanodon marmieri, Eorapax serrasis
Abstract: This study reports the rich occurrence of a varied chondrichthyan assemblage from the Lower Triassic of Spitsbergen based on multiple well-preserved isolated teeth. Based on distinct tooth morphology and histology, two species of the genus Synechodus are described: Synechodus incrementum and a new species cf. Synechodus rotheliusi. The new species is diagnosed based on a smooth crown surface with a sharp cutting edge and lingually inclined cusps with acute apices, where the central cusp is considerably higher than the lateral cusplets. Another group of Synechodus teeth has ornamentation where the crests form longitudinal lines at the base of the mesio-distally elongated crown and is identified as S. incrementum. In addition, two new monotypic genera, Eorapax serrasis and Wimanodon marmieri, are described from the same bonebed. Eorapax serrasis has unique morphological features, such as a monocuspid crown with a serrated cutting edge. Whereas W. marmieri is distinguished based on unique apomorphic features such as a round bulgy crown that overhangs the crown-root junction—especially at the crown shoulder. Tooth histology, including enameloid microstructures, is described for the first time and shows that these taxa are distinctly different from other known comparable genera.


Parasites:
no news this month
 

PLEASE send your new papers to
juergen.pollerspoeck@shark-references.com or 
nicolas.straube@shark-references.com   


Latest Research Articles

Extant Chondrichthyes:

Alvarez, E. (2025): Comparing quantity of marine debris to California horn shark sightings and egg appearances in Redondo Beach, California, USA. Marine Pollution Bulletin, 212, Article 117499 https://dx.doi.org/10.1016/j.marpolbul.2024.117499

Apablaza, P. & Queirolo, D. & Ahumada, M. & Wiff, R. & Flores, A. (2025): A pilot tagging study of yellownose skate (Dipturus chilensis) and roughskin skate (Dipturus trachyderma) off southern Chile. Journal of the Marine Biological Association of the United Kingdom, 104, Article e123 https://dx.doi.org/10.1017/s0025315424001152

Aranha, S.G. & Dias, E. & Marsili, T. & Barkai, A. & Queiroz, N. & da Rocha, P.P. & Teodósio, A. (2025): Unravelling the deep: Assessing the bycatch of deep-sea elasmobranchs in crustacean bottom trawl fisheries in Portugal. Marine Policy, 173, Article 106555 https://dx.doi.org/10.1016/j.marpol.2024.106555

Barcellos, L.R. & da Silva, T.E.F. & Lessa, R.P.T. (2025): Historical changes in conservation measurements on target, predictable bycatch and bycatch species caught by pelagic longline fisheries in Southwest Atlantic Ocean. Marine Policy, 173, Article 106567 https://dx.doi.org/10.1016/j.marpol.2024.106567

Barrilli, G.H.C. & Branco, J.O. (2024): Environmental drivers of fish bycatch composition in small-scale shrimp trawling along the southern Brazilian coast. Environmental Monitoring and Assessment, 197(1), Article 117 https://dx.doi.org/10.1007/s10661-024-13574-2

Barrowclift, E. & Temple, A.J. & Pardo, S.A. & Khan, A.M.A. & Razzaque, S.A. & Wambiji, N. & Ismail, M.R. & Dewanti, L.P. & Berggren, P. (2025): Age, growth, and intrinsic sensitivity of Endangered Spinetail Devil Ray (Mobula mobular) and Bentfin Devil Ray (M. thurstoni) in the Indian Ocean. Marine Biology, 172(2), Article 24 https://dx.doi.org/10.1007/s00227-024-04564-6

Bengil, E.G.T. & Saglam, N.E. (2024): Beyond the anchovy: Unveiling the Black Sea's elasmobranchs. Zoology in the Middle East, in press https://dx.doi.org/10.1080/09397140.2025.2444691

Biton-Porsmoguera, S. & Marco-Mirallesb, F. & Bouchouchab, M. (2024): Mercury levels in tissues (cartilage, skin, and muscle) of the Greenland shark (Somniosus microcephalus): Potential contamination sources and implications for health and conservation. Polar Science, 42, Article 101079 https://dx.doi.org/10.1016/j.polar.2024.101079

Bowen, K.R. & Kurle, C.M. (2024): Stable isotope values from organisms in the North Pacific Ocean: A reference for trophic ecology studies. Marine Mammal Science, in press https://dx.doi.org/10.1111/mms.13221

Braccini, M. & De Wysiecki, A.M. & Newman, S.J. (2025): Interdecadal stability in ecological indicators suggests no ecosystem downgrading by a long-standing shark fishery. Ocean & Coastal Management, 261, Article 107521 https://dx.doi.org/10.1016/j.ocecoaman.2024.107521

Buschmann, J. & Roques, K.G. & Davies, J.S. & Dissanayake, A. & Keeping, J.A. (2024): Novel approach to studying marine fauna: using long-life remote underwater video cameras to assess occurrence and behaviour of threatened and data-deficient elasmobranch species in southern Mozambique. Frontiers in Marine Science, 11, Article 1518710 https://dx.doi.org/10.3389/fmars.2024.1518710

Cabrera-Guerra, D. & Tripp-Valdez, A. & Galván-Magaña, F. & Sánchez-González, A. & Elorriaga-Verplancken, F.R. & Zetina-Rejón, M.J. & Delgado-Huertas, A. (2025): Trophic ecology of Pacific sharpnose shark (Rhizoprionodon longurio) in Santa Rosalia, Gulf of California, Mexico. Environmental Biology of Fishes, in press https://dx.doi.org/10.1007/s10641-024-01660-w

Campos, A.S. & Bezerra, M.F. & Moura, V.L. & Faria, V.V. & Rezende, C.E. & Bastos, W.R. & Oliveira, I.A.S. & Lacerda, L.D. (2024): Assessment of mercury bioaccumulation in a tropical elasmobranch assemblage. Environmental Chemistry, 21(8), Article En24065 https://dx.doi.org/10.1071/en24065

Carpenter, M. & Cullain, N. & Daly, R. & Smith, G. & Dicken, M. & Dames, V. & Griffiths, C.L. & Marshall, A.D. (2025): Preliminary insights into manta ray (Mobula alfredi and M. birostris) population demographics and distribution in South Africa. Environmental Biology of Fishes, in press https://dx.doi.org/10.1007/s10641-024-01639-7

Consales, G. & Campani, T. & Di Noi, A. & Garofalo, M. & Di Marcantonio, E. & Reinero, F.R. & Casini, S. & Dallai, L. & Sperone, E. & Marsili, L. & Micarelli, P. (2025): Minimizing Stress in White Sharks: Non-Invasive Epidermal Biopsies for Isotopic and Vitellogenin Analyses. Biology, 14(2), Article 192 https://dx.doi.org/10.3390/biology14020192

Costa, I.C. & Siciliano, S. & Hauser-Davis, R.A. & Wosnick, N. & Rincon, G. & Roges, E.M. & Festivo, M.L. & Rodrigues, D.D. & Nunes, J.L.S. (2025): An enteric microbiota assessment in sharks and rays from the Brazilian Amazon Coast. Environmental Biology of Fishes, in press https://dx.doi.org/10.1007/s10641-025-01666-y

Cruz-Acevedo, E. & López-Arroyo, A. & Martínez-Reséndiz, S. & Ramírez-Chávez, E.J. & Gracia, A. & Torres-Huerta, A.M. (2025): Morphological abnormalities in species of the genera Narcine and Pseudobatos (Elasmobranchii: Batoidea) in the Mexican South Pacific. Environmental Biology of Fishes, in press https://dx.doi.org/10.1007/s10641-024-01662-8

Di Crescenzo, S. & Bellodi, A. & Carbonara, P. & Cuccu, D. & Melis, R. & Mulas, A. & Porcu, C. & Cannas, R. & Follesa, M.C. (2024): I would like my privacy: insights on the possible presence of an important conservation site for the endemic skate Leucoraja melitensis (Clark, 1926). Hydrobiologia, in press https://dx.doi.org/10.1007/s10750-024-05778-x

Diggles, B.K. (2025): Development of Resources and Equipment to Promote Best Practices for the Humane Dispatch of Sharks in a Commercial Fishery. Fisheries Management and Ecology, in press https://dx.doi.org/10.1111/fme.12790

Frappi, S. & Klein, S.G. & Arossa, S. & Bervoets, T. & Ciocanaru, I.A. & Dixon, O.F.L. & Gallagher, A.J. & Hardenstine, R. & den Haring, S.D. & Kalampokis, A. & Rodrigue, M. & Shipley, O.N. & Silva, L. & Steckbauer, A. & Williams, C. & Williams, I. & Jones, B. & Pieribone, V. & Qurban, M.A. & Duarte, C.M. (2024): An integrated multi-source dataset of elasmobranchs in the Red Sea following the Red Sea Decade Expedition. Scientific Data, 11(1), Article 1425 https://dx.doi.org/10.1038/s41597-024-04262-4

Gallo, S. & Leonetti, F.L. & Reinero, F.R. & Micarelli, P. & Passarelli, L. & Giglio, G. & Milazzo, C. & Imbrogno, S. & Barca, D. & Bottaro, M. & Sperone, E. (2025): Bioaccumulation Patterns in Different Tissues of Twelve Species of Elasmobranchs from the Tyrrhenian and Ionian Sea (Calabria, Southern Italy). Environments, 12(1), Article 12 https://dx.doi.org/10.3390/environments12010012

Gonçalves-Neto, J.B. & Lima, C.D. & Jucá-Queiroz, B. & de Freitas, J.E.P. & Charvet, P. & Faria, V.V. (2024): White Shark or Shortfin Mako? Lamnid sharks identification in an overlapping area of the Equatorial Southwestern Atlantic. Ocean and Coastal Research, 72, Article e24075 https://dx.doi.org/10.1590/2675-2824072.23170

Heidarieh, H. & Gholamhosseini, A. & Soltanian, S. & Heidarieh, M. & Banaee, M. & Shiry, N. (2025): Assessment of heavy metals concentration and health risk in four species of Persian Gulf sharks in Hormozgan Province. Journal of Trace Elements in Medicine and Biology, 87, Article 127581 https://dx.doi.org/10.1016/j.jtemb.2024.127581

Henderson, A.C. & Reeve, A.J. & Jabado, R.W. & Naylor, G.J.P. (2025): A molecular-assisted taxonomic assessment of elasmobranch fishes (Chondrichthyes: Elasmobranchii) from south-eastern Arabia revisited. Zootaxa, 5575(3), 429–446 https://dx.doi.org/10.11646/zootaxa.5575.3.5

Hendon, J.M. & Hoffmayer, E.R. & Pollack, A.G. & Mareska, J. & Martinez-Andrade, F. & Rester, J. & Switzer, T.S. & Zuckerman, Z.C. (2025): Impacts of survey design on a Gulf of Mexico bottom longline survey and the transition to a unified, stratified - random design. Frontiers in Marine Science, 11, Article 1426756 https://dx.doi.org/10.3389/fmars.2024.1426756

Junge, C. & Ferter, K. & Klöcker, C.A. & Bjelland, O. & Albretsen, J. & Lennox, R.J. & Okland, F. & Jac, R. & Andrade, H. & Albert, O.T. (2024): Tag attachment innovation on spurdog (Squalus acanthias) reveals year-round coastal association of pregnant females in northeastern Atlantic waters. Journal of Fish Biology, in press https://dx.doi.org/10.1111/jfb.16000

Kadler, R. & Pirkle, C. & Yanagihara, A. (2024): A systematic review of reports on aquatic envenomation: are there global hot spots and vulnerable populations? Journal of Venomous Animals and Toxins Including Tropical Diseases, 30, Article e20240032 https://dx.doi.org/10.1590/1678-9199-jvatitd-2024-0032

Karlovic, T.C. & Longo, G.R. & Lopes, A.R. & Amaral, I.L. & Yoshino, Y.A. & Almeida, A.A.V. & Andrade, L.S. & Bedin, F.G. & de Abreu, M.T. & Chioatto, F.S.M. & Kian, C.Y. & Candido, L.C. & Silva, J.M. & Moreira, P.S. & Dias, J.F. (2024): Mating sanctuary for whitespotted eagle rays (Aetobatus narinari) in Brazilian southeastern waters. Ocean and Coastal Research, 72, Article e24084 https://dx.doi.org/10.1590/2675-2824072.24053

Keller, B.A. & Frazier, B.S. & Grubbs, R.D. (2024): The spatiotemporal effect of sea surface temperature on the seasonal migrations of the bonnethead, Sphyrna tiburo. Environmental Biology of Fishes, in press https://dx.doi.org/10.1007/s10641-024-01632-0

Kesner-Reyes, K. & Capuli, E.C. & Reyes, R.B. & Jr. & Jansalin, J.G.M. & Rius-Barile, J. & Bactong, M. & Daskalaki, E. & Manousi, S. & Ferrà, C. & Scarcella, G. & Coro, G. & Ordines, F. & Celie, L. & Scotti, M. & Lambert, C. & Gal, G. & Palomares, M.L. & Tsikliras, A.C. & Dimarchopoulou, D. (2024): Gap Analysis on the Biology of Marine Fishes Across European Seas. Reviews in Fisheries Science & Aquaculture, in press https://dx.doi.org/10.1080/23308249.2024.2446806

Koehler, L. & Lowther, J. (2025): Tracking implementation of shark-related measures and actions in the Mediterranean region in the context of international law. Biological Conservation, 302, Article 110930 https://dx.doi.org/10.1016/j.biocon.2024.110930

Kuntz, J.P. & Bell-Tilcock, M. & Vecchio, J.L. & Wallace, A.A. & Sturrock, A.M. & Perry, S.M. & Kim, S.L. (2024): Investigating eye lens composition for stable isotope analysis in fishes: a comparison between Chondrichthyes and Actinopterygii. Environmental Biology of Fishes, in press https://dx.doi.org/10.1007/s10641-024-01656-6

Lee, S.H. & Yang, L. & Naylor, G.J.P. (2024): Highlighting the Importance of Correct Sex Identification in Chondrichthyan Genomic Studies, Using the White Shark as an Example. Fishes, 9(12), Article 520 https://dx.doi.org/10.3390/fishes9120520

Lemrabott, S.Y.C. & van Leeuwen, A. & Leurs, G. & El-Hacen, E.M. & Piersma, T. & Sall, A.A. & Sidina, E. & Yarba, L. & Olff, H. (2024): Overfishing of Threatened Bycatch Species in a Marine Protected Area: The Elasmobranchs of Banc d'Arguin, Mauritania. Fisheries Management and Ecology, in press https://dx.doi.org/10.1111/fme.12786

Lesturgie, P. & Denton, J.S.S. & Yang, L. & Corrigan, S. & Kneebone, J. & Laso-Jadart, R. & Lynghammar, A. & Fedrigo, O. & Mona, S. & Naylor, G.J.P. (2025): Short-term evolutionary implications of an introgressed size-determining supergene in a vulnerable population. Nature Communications, 16, Article 1096 https://dx.doi.org/10.1038/s41467-025-56126-z

Mayer, G.B. & Freitas, R.H.A.d. & Charvet, P. & Laporta, M. & Mas, F. & Montealegre-Quijano, S. & Paesch, L. & Palacio, M.C. & Pereyra, I. & Riverón, S. & Rolim, F.A. & Silveira,

S. & Vögler, R. & Cuevas, J.M. (2025): Environmental and spatial modeling of the critically endangered sand tiger shark, Carcharias taurus, in the Southwest Atlantic Ocean. Environmental Biology of Fishes, in press https://dx.doi.org/10.1007/s10641-025-01670-2

McFarland, E.P. & Crow, K.D. (2024): The evolution of cephalic fins in manta rays and their relatives: functional evidence for initiation of domain splitting and modulation of the Wnt signaling pathway in the pectoral fin AER of the little skate. EvoDevo, 15(1), Article 17 https://dx.doi.org/10.1186/s13227-024-00233-3

Menon, M. & Kizhakudan, S.J. & Thomas, S. & Salim, S.S. & Zacharia, P.U. & Sen Dash, S. & Akhilesh, K.V. & Najmudeem, T.M. & Malayilethu, V. & Mahesh, V. & Gop, A.P. & Remya, L. & Manojkumar, P.P. & Rahangdale, S. & Purushottama, G.B. & Roul, S.K. & Pradhan, R.K. & Wilson, L. & Nair, R.J. & Patil, G. & Jamalabad, A. & Yousuf, K. & Radhakrishnan, M. & Sunil, K.T.S. (2024): Shark consumption in India: An exploratory study on trends and awareness. Indian Journal of Fisheries, 71(4), 115–123 https://dx.doi.org/10.21077/ijf.2024.71.4.143316-15

Mills, S.C. & Planes, S. & Mourier, J. (2024): Shark feeding affects health and female reproductive investment in blacktip reef sharks from French Polynesia. Animal Conservation, in press https://dx.doi.org/10.1111/acv.13005

Mohanraj, T. & Rajathy, T.J. & Cross, S. (2025): Morphometric Relationships of Six Vulnerable Sharks from the Southern Coast of India. Thalassas, 41(1), Article 40 https://dx.doi.org/10.1007/s41208-025-00796-5

Otake, S. & Saito, S. & Lin, X. & Saito, C.T. & Kohno, S. & Takagi, W. & Hyodo, S. & Tominaga, M. & Katsu, Y. (2025): Functional characterizations of thermosensitive TRPV channels from Holocephalan elephant shark, Callorhinchus milii, illuminate the ancestral thermosensory system in vertebrates. Journal of Experimental Biology, in press Article jeb.249961 https://dx.doi.org/10.1242/jeb.249961/365575

Pazzaglia, U.E. & Reguzzoni, M. & Terova, G. & Serena, F. & Mancusi, C. & Zarattini, G. & Zecca, P.A. (2025): Growth and mechanical correlations of calcified cartilage in Batoidea: A histomorphological study using the Raja asterias model. Journal of Fish Biology, in press https://dx.doi.org/10.1111/jfb.16037

Pintueles-Tamayo, J.F. & Marmolejo-Rodriguez, A.J. & Galván-Magana, F. & Zavala-Guevara, I.P. & Pantoja-Echavarria, L.M. & Lara, A. & Piñón-Gimate, A. & Elorriaga-Verplancken, F.R. & Arreola-Mendoza, L. (2025): Bioaccumulation and biomagnification of arsenic in the muscle and liver of the speckled guitarfish Pseudobatos glaucostigmus in Santa Rosalia, Gulf of California, Mexico. Marine Pollution Bulletin, 211, Article 117356 https://dx.doi.org/10.1016/j.marpolbul.2024.117356

Reeves, I.M.M. & Weeks, A.R. & Towner, A.V. & Impey,R. & Fish, J.J. & Clark, Z.S.R. & Butcher, P.A. & Meyer, L. & Donnelly, D.M. & Huveneers, C. & Hudson, N. & Miller, A.D. (2025): Genetic Evidence of Killer Whale Predation on White Sharks in Australia. Ecology and Evolution, 15, Article e70786 https://dx.doi.org/10.1002/ece3.70786

Ren, Q.Y. & Sheng, Y. & Sun, L. & Zheng, F.J. & Hu, C.W. & Chen, J.Q. & Lyu, Z.B. & Yuan, C. & Jiang, X.F. (2024): The screening and anti-Raji lymphoma effect of Chiloscyllium plagiosum anti-CD20 VNARs. Frontiers in Marine Science, 11, Article 1498223 https://dx.doi.org/10.3389/fmars.2024.1498223

Ryan, L.A. & Gennari, E. & Slip, D.J. & Collin, S.P. & Peddemors, V.M. & Huveneers, C. & Chapuis, L. & Hemmi, J.M. & Hart, N.S. (2024): Counterillumination reduces bites by Great White sharks. Current Biology, in press https://dx.doi.org/10.1016/j.cub.2024.10.042

Segura-García, I. & Moore, C. & McCoy, M. & McCoy, K. & Box, S. (2024): Sustained fishing threatens globally protected species: Insights from digital catch and genomic data. Global Ecology and Conservation, 56, Article e03337 https://dx.doi.org/10.1016/j.gecco.2024.e03337

Seifert, J. (2025): A new record of the African dwarf sawshark Pristiophorus nancyae (Chondrichthyes: Pristiophoridae) from the Indian Ocean dating back to the 1960s. World Journal of Biology Pharmacy and Health Sciences, 21(01), 482–490 https://dx.doi.org/10.30574/wjbphs.2025.21.1.0086

Shea, B.D. & Chapple, T.K. & Echwikhi, K. & Gambardella, C. & Jenrette, J.F. & Moro, S. & Schallert, R.J. & Block, B.A. & Ferretti, F. (2024): First satellite track of a juvenile shortfin mako shark (Isurus oxyrinchus) in the Mediterranean Sea. Frontiers in Marine Science, 11, Article 1423507 https://dx.doi.org/10.3389/fmars.2024.1423507

Soares, K.D.A. & Oliveira, D.C.S. & Borges, L.C.S. & Ramos, I.L. & El Bayeh, M.C. & Romeiro, A. & Kayasima, G. (2025): A new protocol for brain extraction of sharks and batoids (Chondrichthyes: Elasmobranchii). Zoomorphology, 144(1), Article 8 https://dx.doi.org/10.1007/s00435-024-00695-y

Sólmundsson, J. & Jakobsdóttir, K.B. & Pétursdóttir, H. (2025): Deepwater Sharks at Their Northern Limits-Distribution, Diet and Trophic Relations. Marine Ecology-an Evolutionary Perspective, 46(1), Article e12854 https://dx.doi.org/10.1111/maec.12854

Varela, J. & Santos, C.P. & Nunes, E. & Pissarra, V. & Pires, S. & Ribeiro, B.P. & Vieira, E. & Repolho, T. & Queiroz, N. & Freitas, R. & Rosa, R. (2025): Sharks in Macaronesia and Cabo Verde: species richness, conservation status and anthropogenic pressures. Frontiers in Marine Science, 12, Article 1490317 https://dx.doi.org/10.3389/fmars.2025.1490317

Vázquez-Liñero, M.A. & Galván-Magaña, F. & Tripp-Valdez, A. & Sánchez-González, A. & Briones-Hernández, S.A. & Hoyos-Padilla, E.M. & Piñón-Gimate, A. (2025): Trophic ecology of juvenile smooth hammerhead shark Sphyrna zygaena (Carcharhiniformes: Sphyrnidae) in the central Gulf of California, Mexico. Environmental Biology of Fishes, in press https://dx.doi.org/10.1007/s10641-024-01665-5

Vera-Mera, S. & Mejia, D. & Mera, C. & Vélez-Soledispa, M. & Briones-Mendoza, J. & Galván-Magaña, F. & Tamayo-Vega, S. (2025): Age and Growth of the Shortfin Mako Shark, Isurus oxyrinchus (Rafinesque, 1810), in the Ecuadorian Pacific Ocean. Fisheries Management and Ecology, in press https://dx.doi.org/10.1111/fme.12795

Victor, B.C. & Grove, J.S. & Long, D.J. & Robertson, D.R. & Keith, I. & Bensted-Smith, W. & Salinas-de-León, P. (2024): List of Fishes of the Galapagos Archipelago, Ecuador (Version 2.0). Journal of the Ocean Science Foundation, 41, 54–111

Whitfield, A.K. & Barletta, M. & Harrison, T.D. (2025): Comparisons between tropical and temperate estuarine ichthyofaunas of western Africa and eastern South America. Estuarine Coastal and Shelf Science, 313, Article 109088 https://dx.doi.org/10.1016/j.ecss.2024.109088

Yamada, T. (2024): BORROWED ILLUSTRATIONS OF GLOSSOPETRAE WITH SHARK'S HEAD: STENO AND THE VATICAN COLLECTION OF MERCATI. Earth Sciences History, 43(2), 207–221 https://dx.doi.org/10.17704/1944-6187-43.2.207

Zemah-Shamir, S. & Belkin, I.S. & Zemah-Shamir, Z. & Portman, M.E. (2025): Introducing dynamics into coastal recreational management: Humans-sharks interactions case study. Ocean & Coastal Management, 261, Article 107524 https://dx.doi.org/10.1016/j.ocecoaman.2024.107524



Extinct Chondrichthyes:

Bateman, L.-P. & Larsson, H.C.E. (2025): The first Otodus megalodon remains from Canada and their predicted range limit. Canadian Journal of Earth Sciences, in press https://dx.doi.org/10.1139/cjes-2024-0110

Cantalice, K.M. & Salgado-Garrido, H.E. & Sosa-Rodríguez, E. & Vilchis-Zapata, K. & González-Barba, G, (2025): Underwater paleontology inside cenotes reveals the Miocene-Pliocene fish diversity in the Yucatan Peninsula, southeast Mexico. PLoS ONE, 20(2), Article e0315382 https://dx.doi.org/10.1371/journal.pone.0315382

Comans, C.M. & Tobin, T.S. & Totten, R.L. (2025): Oxygen isotope composition of teeth suggests endothermy and possible migration in some Late Cretaceous shark taxa from the Gulf Coastal Plain, USA. Paleobiology, in press https://dx.doi.org/10.1017/pab.2024.45

Duffin, C.J. & Lauer, B. & Lauer, R. (2025): Chimaeropsis paradoxa Zittel, 1887 (Myriacanthoidei, Holocephali) from the Late Jurassic of Solnhofen. Neues Jahrbuch für Geologie und Paläontologie, Abhandlungen, 313(3), 245–272 https://dx.doi.org/10.1127/njgpa/2025/1233

Gille, D. & Gille, A. (2025): Physogaleus hemmooriensis REINECKE & HOEDEMAKERS, 2006 - ein kleiner Hai aus Twistringen. Arbeitskreis Paläontologie Hannover, 53, 32–37

Greif, M. & Calandra, I. & Lautenschlager, S. & Kaiser, T.M. & Mezane, M. & Klug, C. (2025): Reconstruction of feeding behaviour and diet in Devonian ctenacanth chondrichthyans using dental microwear texture and finite element analyses Royal Society Open Science, 12(1), Article 240936 https://dx.doi.org/10.1098/rsos.240936

Pollerspöck, J. & Unger, E. (2024): „Beiträge zur Kenntniss der fossilen Fische aus der Molasse von Baltringen“ – Revision zum 200. Geburtstag von Pfarrer Josef Probst. Teil Hayfische (Selachoidei A. Günther) (Schluss) (Probst 1879). Jahreshefte der Gesellschaft für Naturkunde Württemberg, 180, 401–500

Saugen, S.M. & Roberts, A.J. & Engelschion, V.S. & Hurum, J.H. (2024): A new assemblage of Lower Triassic neoselachians (Chondrichthyes) from the Grippia Bonebed of Spitsbergen, Norway. Journal of Vertebrate Paleontology, in press https://dx.doi.org/10.1080/02724634.2024.2426544

Staggl, M.A. & De Gracia, C. & López-Romero, F.A. & Stumpf, S. & Villalobos-Segura, E. & Benton, M.J. & Kriwet, J. (2025): The Drivers of Mesozoic Neoselachian Success and Resilience. Biology, 14(2), Article 142 https://dx.doi.org/10.3390/biology14020142

Zhao, Y. & Bestwick, J. & Fischer, J. & Bastiaans, D. & Greif, M. & Klug, C. (2025): The first record of a shortnose chimaera-like egg capsule from the Mesozoic (Late Jurassic, Switzerland). Swiss Journal of Palaeontology, 144, Article 8 https://dx.doi.org/10.1186/s13358-025-00352-x

 

Parasites:

Ko, H.J. & Lee, S.B. & Kim, K.H. & Jeon, S.Y. & Jung, J.Y. & Choi, Y.M. & Park, S.C. (2024): Microbothriid (Monogenean) Infection and Treatment in Captive Blacktip Reef Shark (Carcharhinus melanopterus). Microorganisms, 12(12), Article 2558   https://dx.doi.org/10.3390/microorganisms12122558
 
 

MISCELLANEOUS:


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Under-sea mountains are key 'hubs' for sharks

Date: February 14, 2025
Source: University of Exeter
Summary: Under-sea mountains are key locations for predators -- with 41 times more sharks than the open ocean, new research shows.
 

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Study takes a 'bite' out of shark depredation using citizen science

Researchers identify Florida's ocean 'bandits' and most common depredated species

Date: February 11, 2025
Source: Florida Atlantic University
Summary: Shark depredation is a rising issue in recreational fishing, especially in Florida, where sharks steal fish straight off anglers' lines. Researchers harnessed citizen science -- social media, angler surveys, charters -- and genetic analysis, to investigate the problem. Findings reveal that snapper-grouper species are the most targeted, with bull and sandbar sharks as the primary culprits. Nearly half of anglers reported depredation. These insights help shed light on the extent of this human-wildlife conflict and its impact on different fishery sectors.
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White shark liver is on Australian killer whales' menu, genomic evidence confirms

Date: February 1, 2025
Source: Flinders University
Summary: DNA evidence has confirmed killer whales in Australia hunted a white shark for its liver. Based on DNA analysis from the bite wounds on the carcass of a large white shark washed ashore near Portland in Victoria in 2023, the study identified that killer whales were responsible for consuming the mid-section containing the nutritionally rich liver.

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Sharks and rays benefit from global warming, but not from CO2 in the Oceans

Even positive effects do not compensate for the complex dangers of climate change

Date: January 30, 2025
Source: University of Vienna
Summary: Sharks and rays have populated the world's oceans for around 450 million years, but more than a third of the species living today are severely threatened by overfishing and the loss of their habitat. Palaeobiologists have now investigated whether and how global warming influences the diversity of sharks based on climate fluctuations between 200 and 66 million years ago. According to the study, higher temperatures and more shallow water areas have a positive effect, while higher CO2 levels have a clearly negative effect.

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New IUCN Shark News Newsletter is out!
Download: https://www.iucnssg.org/shark-news.html

 
 
 
 






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