View this email in your browser

NEWSLETTER 09/2021 07.09.2021

Please acknowledge use of the database in your publications, and cite: 

Pollerspöck, J. & Straube, N. 2021, Bibliography database of living/fossil sharks, rays and chimaeras (Chondrichthyes: Elasmobranchii, Holocephali),, World Wide Web electronic publication, Version 2021

We started to change our old (and unique!) citation style to adapt to the APA citation style (for information please see: 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 13600 references are changed.

In particular this means that the former style of this example:
Molecular analyses of confiscated shark fins reveal shortcomings of CITES implementations in Germany. Conservation Science and Practice, 3 (6): e398
DOI: 10.1111/csp2.398

now looks like:

Villate‐Moreno, M. & Pollerspöck, J. & Kremer‐Obrock, F. & Straube, N. (2021)
Molecular analyses of confiscated shark fins reveal shortcomings of CITES implementations in Germany. Conservation Science and Practice, 3(6), Article e398
DOI: 10.1111/csp2.398


New database report published by team shark-references!
- You want to know how many species of sharks, rays and chimaeras there are?
- You want to know the distribution of species among the orders or families?
- You want to know the references of the first descriptions?
- You want a list of all sharks, rays and chimaeras ever described with their synonyms?

Our new data report can answer all these questions for you!
Abstract: The table and provided download links below are intended for informational use in Chondrichthyan research. The allocation aims for faciliating to find species numbers and most recent information on taxonomic changes. We will regularly update the table and download links at lest twice annually. The updates will be announced on facebook ( and in our monthly newsletter (sign up here: The Excel sheet allows for the application of individual filter- and sorting options. The list of described spsecies complements taxonomic information for the list of valid species by providing synonyms and / or new taxonomic combinations.


It is to inform you about upcoming in 2022 the Special Issue of the Journal of Ichthyology dealing with primitive fishes, including sharks, skates, and chimaeras.

Alexei Orlov

Special Issue description
Non-teleost fishes that are the living representatives of ancient lineages are often considered to be ‘primitive’ or ‘living fossils’. These terms are not entirely accurate in terms of vertebrate evolution. According to modern concepts, primitive fishes include hagfishes (Myxini), lampreys (Petromyzontiformes), sharks and skates/rays (Elasmobranchii), ratfishes/chimaeras (Holocephali), coelacanths (Coelacanthi), lungfishes and tetrapods (Dipneusti), bichirs/reedfishes (Cladistii), sturgeons (Acipenseridae) and paddlefishes (Polyodontidae), gars (Lepisosteidae), bowfins (Amiidae), and others. This Special Issue aims to provide an overview of the current knowledge of primitive fishes with respect to:
  • Evolution, phylogeny, phylogeography, and molecular biology
  • Taxonomy and zoogeography
  • Ecology and life history
  • Harvesting, stock assessment, and fisheries management
  • Physiology
  • Artificial propagation and aquaculture
  • Conservation and stock rebuilding


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

Partner in Google-Maps




New Images

Many thanks to the following people for providing images:

Sébastien Rafay for some images of Gladioserratus aptiensis (Pictet, 1864)

Ignacio Contreras, Laboratorio de Zoología de Vertebrados Facultad de Ciencias, U. de Chile for images of  Psammobatis scobina (Philippi, 1857) and Callorhinchus callorynchus (Linnaeus, 1758)

Christopher J. Duffin for a image of the holotype of Vallisodus coppi (Duffin, 1982)

Evgeny Popov for a image of Moskovirhynchus robustus Popov & Shapovalov, 2021

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:

MATSUMOTO, H. (1936) Upper Miocene vertebrates from Kumanodô, Natori district, province of Rikuzen. Dobutsugaku Zasshi, 48: 475–480, 5 fig.

ALVINERIE, J. & ANDREIEFF, P. & ANGLADA, R. & AUBERT, J. & CAPPETTA, H. & CARALP, M. & CARATINI, C. & CARBONNEL, G. & CATZIGRAS, F. & COURME-RAULT, M.-D. & CHATEAUNEUF, J.-J. & DEMARCQ, G. & DUCASSE, O. & FATTON, E. & GLAÇON, G. & LABRACHERIE, M. & LAURIAT, A. & LE CALVEZ, Y. & LORENZ, C. & MAGNE, J. & MARGEREL, J.-P. & POIGNANT, A. & PUJOL, C. & ROGER, J. & ROMAN, J. & BLONDEAU, A. & MULLER, C. (1973) A propos de la limite oligo-miocène: résultats préliminaires d'une recherche collective sur les gisements d'Escornébéou (Saint-Géours-de-Maremne, Landes, Aquitaine méridionale). Présence de Globigerinoides dans les faunes de l'Oligocène supérieur. Comptes rendus sommaires des séances de la Société géologique de France: 75–76

Extant Chondrichthyes:

KAMOHARA, T. (1943) Some unrecorded and two new fishes from Prov. Tosa, Japan. Bulletin of the Biogeographical Society of Japan, 13 (17): 125–137

DE BUEN, F. (1950) Contribuciones a la Ictiología. II. El tiburón vitamínico de la costa uruguaya Galeorhinus vitaminicus nov. sp., y algunas consideraciones generales sobre su biología. Publicaciones Cientificas, Servicio Oceanografico y de Pesca, Ministerio de Industrias y Trabajo, Montevideo No. 4: 153–162.

WEIBEZAHN, F.H. (1953) Una nueva especie de Scyliorhinus de Venezuela (Chondrichthyes - Elasmobranchii). Novedades cientificas. Serie zoológica. Museo de Historia Natural La Salle, 9: 1–7.

SMITH, J.L.B. (1958) The mystery killer, the new shark Carcharhinus vanrooyeni. Veld & Vlei, 3 (9): 12–14, 28.

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

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 and send missing papers (not listed papers or papers without the info-symbol) to or



Upcoming Meetings:


EEA Meeting 2021 in Leiden, Netherlands

Dear friends and colleagues,
We are very pleased to inform you that abstract submission for EEA2021 is available online at 
Registration will follow in due course, so keep an eye on the website: 

The 24th Annual Scientific Meeting of the European Elasmobranch Association is planned to be held by the Dutch member group Nederlandse Elasmobranchen Vereniging (NEV) in Leiden, the Netherlands between 3rd and 5th November, 2021.

NEV, in consultation with the EEA Board, has decided to tentatively organise this year’s EEA Meeting as an in-person meeting. Luckily, NEV was able of having secured the same prime venue at the fascinating Naturalis Biodiversity Center! Leiden is a beautiful old university town just 20 mins from Schiphol airport and international train station.

Prior to the main meeting we will organise an online session on November 2nd to allow those who cannot attend in person to contribute.

We understand that there is still a lot of uncertainty as far as travel etc. is concerned. In mid-July we will make the decision whether or not to host a live event.

If an in-person meeting is not possible the entire EEA2021 will be online.

In the coming weeks the website for early registration will be updated, as well as opening the abstract submission for either an online or live presentation.

Details can be found on the NEV website:



Welcome to ESEB 2021 Congress.

Given the current situation, the organizers
decided to postpone the congress by a year.

Welcome to the ESEB 2021 congress, to be held at the Prague Congress Centre, the Czech Republic, on 22-27 August 2021.

The congresses of the European Society for Evolutionary Biology (ESEB) are organized biennially since 1987 and are now among the largest conferences in evolutionary biology with about 1400 – 1700 participants.

The congress will commence on Sunday, August 22, 2021, with the welcome reception, and will continue until Friday, August 27, concluding with the conference dinner at Občanská Plovárna Restaurant on this evening.

The Prague Congress Centre is easily accessible from the city centre and has a beautiful panoramic view of Prague.  



92nd Annual Meeting of the Paläontologische Gesellschaft!

This year's Annual Meeting will be held as online conference from September 27 to 30, 2021.

We are pleased to host the 92nd annual conference of the Paläontologische Gesellschaft (PalGes). The meeting, like the previous ones, is designed as an international meeting to present cutting-edge research from palaeobiology, palaeontology, geobiology and related subjects. The Paläontologische Gesellschaft is one of the oldest and largest palaeontological societies in the world and we "Viennese" are now hosting the annual meeting for the fifth time after 1923, 1954, 1963 and 2011.

The venue will be held as online conference only due to uncertainties over travel and meeting size restrictions related to COVID-19 development. Participation in the conference is free of charge. Unfortunately, the online format means that there will not be any poster session or conference dinner this year.

We will keep you up to date with new and exciting details of our virtual meeting. If you have questions, please do not hesitate to contact us via e-mail.


IX National Symposium of Sharks and RaysII Latin American Congress Sharks, Rays and ChimerasThe Sociedad Mexicana de Peces Car tilaginosos, A. C. (SOMEPEC)September 6 – 10, 2021Puebla, México
The Sociedad Mexicana de Pec-es Car tilaginosos, A. C. (SOME-PEC) is a non-profit organization that seeks to promote the scientific study of sharks and rays, as well as their rational use. Faithful to its objective of creating spaces for the exchange of experiences and advances in the dif ferent lines of research on sharks and rays, which are developed in Mexico and the rest of the world, it organizes the IX National Symposium of Sharks and Rays, and II Latin American Congress of Sharks, Rays and Chimaeras

IUCN World Conser vation CongressSeptember 3 – 11, 2021Marseille, France
iucncongress2020.orgThe IUCN World Conser vation Congress is where the world comes together to set priorities and drive conservation and sustainable development ac-tion. IUCN’s 1300+ government, civil society and indigenous peoples’ Member organisations vote on major issues, action which guides humanity’s relationship with our planet for the decades ahead. IUCN’s unique and inclusive membership gives the Congress a powerful mandate as it is not solely government or non-government, but both together.


6th Southern African Shark & Ray Symposium (SASRS)
November 17 – 19, 2021Gansbaai, South Africa
The Southern African Shark and Ray Symposium is a bienni-al meeting of the academic community of Southern Africa who are currently conducting research on these taxa.The SASRS will be composed of a combination of oral and poster presentations, work-shops, and public events – with plenty of added fun and adventure planned for attendees. Keynote presentations will be scheduled throughout the Symposium.  


Oceania Chondrichthyan Societ y (OCS)8th World Fisheries Congress (WFC)Session 58: “Global Status, Recent Developments and Future of Shark and RayFisheries”September 20 – 24, 2021Adelaide, Australia
The Oceania Chondrichthyan Society was founded in 2005 and is a joint venture between Australia, New Zealand, Papua New Guinea and the Pacific Islands to promote and facilitate education, conservation and scientific study of chondrichthyan fish.The 8th World Fisheries Congress will be the largest gathering of research, industry and management sectors to discuss the latest advances in fisheries world-wide. The World Fisheries Congress is the key international fisheries conference. Aiming to foster cooperation and engagement in commercial, recreational and indigenous fisheries. Providing insightful presentations and inspiring forums on key developments needed to ensure the future sustainable development of the world’s oceans, lakes, estuaries and rivers.The goal of the “Global Status, Recent Developments and Future of Shark and Ray Fisheries” session is to assemble shark fisheries scientists from around the globe to discus s novel research and provide insight on how they study their local shark fisheries. This session will provide a platform for shark
and ray scientists to discus-recent research techniques, findings, and their implications for the future of shark and ray fisheries.

Extant Chondrichthyes:

no taxonomic news this month

Extinct Chondrichthyes:

Popov, E.V. & Shapovalov, K.M. (2021): A New Genus of Elephant Fish (Holocephali: Callorhinchidae) from the Late Jurassic of Central Russia. Paleontological Journal, 55(4), 410–420
New genus: Moskovirhynchus
New species: Moskovirhynchus robustus
Abstract: This article describes Moskovirhynchus robustus gen. et sp. nov., a new genus and species of elephant fish from two Upper Jurassic (Boreal middle Volgian Substage, virgatus Zone) localities of Moscow and the Moscow region, based on isolated mandibular, palatine and vomerine dental plates. The dentition of the new genus bears a morphological resemblance to that of the Recent elephant fish genus Callorhinchus Lacepède, 1798, but is characterized by a mosaic combination of primitive (on palatine tooth plates) and advanced (on both palatine and mandibular plates) dental characters—e.g., presence of asymmetrical bifurcated median tritor on mandibular plates and reduced tritors on palatine plates (an advanced condition for callorhinchids) together with a well-developed aboral area of palatine plate (a primitive condition). The new taxon, known only from dental elements, represents the oldest representative of the Callorhinchidae sensu stricto.


Warren, M.B. & Bullard, S.A. (2021): Fish blood flukes (Digenea: Aporocotylidae) from Indonesia: Two new genera and species infecting the banded eagle ray, Aetomylaeus nichofii (Bloch and Schneider, 1801) Capapé and Desoutter, 1979 (Myliobatiformes: Myliobatidae) from Borneo. International Journal for Parasitology–Parasites and Wildlife, 15, 43–50
New genus: Aetohemecus, Homestios
New species: Aetohemecus kirstenjensenaeHomestios janinecairae
Abstract: Specimens representing two new species of blood flukes (Digenea: Aporocotylidae), each representing a new genus, were collected from the banded eagle ray, Aetomylaeus nichofii (Bloch and Schneider, 1801) Capapé and Desoutter, 1979, in Borneo, Indonesia. Aetohemecus kirstenjensenae n. sp., n. gen. infected the heart of a banded eagle ray from Manggar, East Kalimantan, Borneo, Indonesia, and differs from its congeners by having an oviducal ampullae, an oötype posterior to all genitalia, and a uterus that extends anterior to the ovary. The new species resembles Selachohemecus spp., which infect requiem sharks (Carcharhinidae) in the Northwestern Atlantic Ocean and Gulf of Mexico, by having a single ventrolateral row of large C-shaped tegumental spines, X- or H-shaped intestine, and a post-caecal ovary. Specimens of Homestios janinecairae n. sp., n. gen. infected the heart of a banded eagle ray from Takisung, South Kalimantan, Borneo, Indonesia. The new species resembles other blood flukes that infect rays (Batoidea) by having a single, curving testis and an inverse U-shaped intestine as well as by lacking tegumental spines. It differs from all aporocotylids infecting batoids that lack spines by having a uterus that extends anteriad beyond the level of the seminal vesicle. The present study comprises the first record of an aporocotylid from Indonesia or from an eagle ray (Myliobatidae). To our knowledge, these are the first trematodes reported from a species of Aetomylaeus. The proposals of new genera and the description of two new species herein brings the total number of nominal chondrichthyan blood flukes to 13 species of 11 genera.
Beveridge, I. & Koehler, A. & Appy, R.G. (2021): Eutetrarhynchus pacificus n. sp. (Cestoda: Trypanorhyncha) from Raja inornata Jordan & Gilbert (Batoidea: Rajiformes) off the coast of California with comments on congeners. Systematic Parasitology, 98(3), 291–305
New species: Eutetrarhynchus pacificus
AbstractEutetrarhynchus pacificus n. sp. is described from the spiral valve of Raja inornata Jordan & Gilbert off the coast of California, USA. The new species is distinguished from E. ruficollis (Eysenhardt, 1829) and E. leucomelanus (Shipley & Hornell, 1906) in having acraspedote rather than craspedote segments and a saccate rather than a branched uterus. It is distinguished from E. platycephali Palm, 2004 in lacking an enlarged hook in the eighth row of the basal armature and from E. beveridgei Schaeffner, 2013, which has a basal swelling and a distinctive basal armature. A partial redescription of E. ruficollis, the type-species of the genus, is provided based on available museum specimens, highlighting the need for a comprehensive redescription of this species to better define the characteristics of the genus. The presence of an undescribed species in museum collections is also noted. Based on the 28S ribosomal gene, the new species clustered with Dollfusiella in a molecular phylogenetic tree. The delimitation of Eutetrarhynchus and its relationship with Dollfusiella is discussed.


PLEASE send your new papers to or   

Latest Research Articles

Extant Chondrichthyes:
Agyeman, N.A. & Blanco-Fernandez, C. & Steinhaussen, S.L. & Garcia-Vazquez, E. & Machado-Schiaffino, G. (2021) Illegal, Unreported, and Unregulated Fisheries Threatening Shark Conservation in African Waters Revealed from High Levels of Shark Mislabelling in Ghana. Genes, 12(7), Article 1002
Arrowsmith, L.M. & Paidi, C.K. & Bloch, F.H. & John, S. & Choudhury, B.C. & Kaul, R. & Sequeira, A.M.M. & Pattiaratchi, C.B. & Meekan, M.G. (2021) First Insights Into the Horizontal Movements of Whale Sharks (Rhincodon typus) in the Northern Arabian Sea. Frontiers in Marine Science, 8, Article 682730
Ayres, K.A. & Ketchum, J.T. & Gonzalez-Armas, R. & Galvan-Magana, F. & Hearn, A. & Elorriaga-Verplancken, F.R. & Hoyos-Padilla, E.M. & Kajiura, S.M. (2021) The use of an unoccupied aerial vehicle to survey shark species over sand and rocky-reef habitats in a marine protected area. Journal of Fish Biology, in press
Bache-Jeffreys, M. & de Moraes, B.L.C. & Ball, R.E. & Menezes, G. & Palsson, J. & Pampoulie, C. & Stevens, J.R. & Griffiths, A.M. (2021) Resolving the spatial distributions of Dipturus intermedius and Dipturus batis-the two taxa formerly known as the 'common skate'. Environmental Biology of Fishes, in press
Barbini, S.A. & Sabadin, D.E. & Roman, J.M. & Scarabotti, P.A. & Lucifora, L.O. (2021) Age, growth, maturity and extinction risk of an exploited and endangered skate, Atlantoraja castelnaui, from off Uruguay and northern Argentina. Journal of Fish Biology, in press
Bartes, S. & Simpfendorfer, C. & Walker, T.I. & King, C. & Loneragan, N. & Braccini, M. (2021) Conventional tagging of sharks in Western Australia: the main commercial species exhibit contrasting movement patterns. Marine and Freshwater Research, in press
Benavides, M.T. & Fodrie, F.J. & Fegley, S.R. & Bargione, G. (2021) Size Changes within a Southeastern United States Coastal Shark Assemblage: 1975-2018. Marine and Coastal Fisheries, 13(3), 228–239
Boldrocchi, G. & Spanu, D. & Mazzoni, M. & Omar, M. & Baneschid, I. & Boschi, C. & Zinzula, L. & Bettinetti, R. & Monticelli, D. (2021) Bioaccumulation and biomagnification in elasmobranchs: A concurrent assessment of trophic transfer of trace elements in 12 species from the Indian Ocean. Marine Pollution Bulletin, 172, Article 112853
Boldrocchi, G. & Storai, T. (2021) Data-mining social media platforms highlights conservation action for the Mediterranean Critically Endangered blue shark Prionace glauca. Aquatic Conservation, Marine and Freshwater Ecosystems, in press
Bonnin, L. & Mouillot, D. & Boussarie, G. & Robbins, W.D. & Kiszka, J.J. & Dagorn, L. & Vigliola, L. (2021) Recent expansion of marine protected areas matches with home range of grey reef sharks. Scientific Reports, 11, Article 14221
Booth, H. & Squires, D. & Yulianto, I. & Simeon, B. & Muhsin, Adrianto, L. & Milner-Gulland, E.J. (2021) Estimating economic losses to small-scale fishers from shark conservation: A hedonic price analysis. Conservation Science and Practice, in press e494
Broadhurst, M.K. & Tolhurst, D.J. (2021) Null effects of decomposing shark tissue on baited-hook catches of elasmobranchs. Regional Studies in Marine Science, 46, Article 101898
Carluccio, A. & Capezzuto, F. & Maiorano, P. & Sion, L. & D'Onghia, G. (2021) Deep-Water Cartilaginous Fishes in the Central Mediterranean Sea: Comparison between Geographic Areas with Two Low Impact Tools for Sampling. Journal of Marine Science and Engineering, 9(7), Article 686
Chen, J. (2021) Flexible tensegrity wing design and insights in principles of swimming kinematics of batoid rays. Bioinspiration & Biomimetics, 16(5), Article 56007
Chen, W.J. & Wang, X.G. & Gao, X.X. & Gao, X.H. & Fang, C. & Li, C.H. (2021) The complete mitogenome of the blackgill catshark, Parmaturus melanobranchus (Chan, 1966). Mitochondrial DNA Part B, 6(8), 2361–2362
Contreras, I. & Zagal, C.J. (2021) Tiburones, rayas y quimeras del sur de Chile. Valdivia, Fundación Oceanósfera, ISBN: 978-956-09395-3-1
Cruz, V.P. & Adachi, A. & Oliveira, P.H. & Ribeiro, G.S. & Paim, F.G. & Souza, B.C. & Rodrigues, A.S.F. & Vianna, M. & Delpiani, S.M. & de Astarloa, J.M.D. & Rotundo, M.M. & Mendonca, F.F. & Oliveira, C. & Lessa, R.P. & Foresti, F. (2021) Genetic diversity in two threatened species of guitarfish (Elasmobranchii: Rhinobatidae) from the Brazilian and Argentinian coasts: an alert for conservation. Neotropical Ichthyology, 19(2), Article e210012
De Acevedo, M.G. & Gelsleichter, J. (2021) Female sperm storage in the bonnethead Sphyrna tiburo oviducal gland: Immunolocalization of steroid hormone receptors in sperm storage tubules. General and Comparative Endocrinology, 310, Article 113827
De Vivo, G. & Lautenschlager, S. & Vinther, J. (2021) Three-dimensional modelling, disparity and ecology of the first Cambrian apex predators. Proceedings of the Royal Society of London, Series B, 288(1955), Article 20211176
Dugal, L. & Thomas, L. & Jensen, M.R. & Sigsgaard, E.E. & Simpson, T. & Jarman, S. & Thomsen, P.F. & Meekan, M. (2021) Individual haplotyping of whale sharks from seawater environmental DNA. Molecular Ecology Resources, in press
Estupiñán-Montaño, C. & Tamburin, E. & Delgado-Huertas, A. (2021) Stable isotope evidence for movements of hammerhead sharks Sphyrna lewini, connecting two natural protected areas in the Colombian Pacific. Marine Biodiversity, 51, Article 74
Fahmi & Tibbetts, I.R. & Bennett, M.B. & Dudgeon, C.L. (2021) Delimiting cryptic species within the brown-banded bamboo shark, Chiloscyllium punctatum in the Indo-Australian region with mitochondrial DNA and genome-wide SNP approaches. BMC Ecology and Evolution, 21(1), Article 121
Feitosa, L.M. & Queiroz, A.P.N. & Labonne, M. & Dressler, V.L. & Lessa, R.P. (2021) Habitat use and nursery evaluation for the longnose stingray Hypanus guttatus (Bloch & Schneider, 1801) using vertebral microchemistry. Journal of Fish Biology, in press
Forget, F. & Muir, J. (2021) The critically endangered bowmouth guitarfish (Rhina ancylostoma) in the open ocean with an associated tuna school. Marine Biodiversity, 51(4), Article 69
Forget, F. & Muir, J. & Hutchinson, M. & Itano, D. & Sancristobal, I. & Leroy, B. & Filmalter, J. & Martinez, U. & Holland, K. & Restrepo, V. & Dagorn, L. (2021) Quantifying the accuracy of shark bycatch estimations in tuna purse seine fisheries. Ocean & Coastal Management, 210, Article 105637
Friedlander, A.M. & Goodell, W. & Giddens, J. & Easton, E.E. & Wagner, D. (2021) Deep-sea biodiversity at the extremes of the Salas y Gomez and Nazca ridges with implications for conservation. Plos One, 16(6), Article e0253213
Fujiwara, Y. & Matsumoto, Y. & Sato, T. & Kawato, M. & Tsuchida, S. (2021) First record of swimming speed of the Pacific sleeper shark Somniosus pacificus using a baited camera array. Journal of the Marine Biological Association of the United Kingdom, 101(2), 457–464
Gallagher, A.J. & Alsudairy, N.A. & Shea, B.D. & Payne, N.L. & Duarte, C.M. (2021) First Application of 360-Degree Camera Technology to Marine Predator Bio-Logging. Frontiers in Marine Science, 8, Article 707376
Ganske, W. & Sharma, R. & Kaminski, S. & Johnson, A. (2021) Shark-Related Injuries in the United States: A National Trauma Data Bank Analysis. American Surgeon, in press
Garcia-Salinas, P. & Gallego, V. & Asturiano, J.F. (2021) Reproductive Anatomy of Chondrichthyans: Notes on Specimen Handling and Sperm Extraction. I. Rays and Skates. Animals, 11(7), Article 1888
Garcia-Salinas, P. & Gallego, V. & Asturiano, J.F. (2021) Development of Sperm Cryopreservation Protocols for Sharks and Rays: New Tools for Elasmobranch Conservation. Frontiers in Marine Science, 8, Article 689089
Gomez-Garcia, M.D. & Blazquez-Moreno, M.D. & Stewart, J.D. & Leos-Barajas, V. & Fonseca-Ponce, I.A. & Zavala-Jimenez, A.A. & Fuentes, K. & Ketchum, J.T. (2021) Quantifying the Effects of Diver Interactions on Manta Ray Behavior at Their Aggregation Sites. Frontiers in Marine Science, 8, Article 639772
Grant, M.I. & White, W.T. & Amepou, Y. & Baje, L. & Diedrich, A. & Ibana, D. & Jogo, D.J. & Jogo, S. & Kyne, P.M. & Li, O. & Mana, R. & Mapmani, N. & Nagul, A. & Roeger, D. & Simpfendorfer, C.A. & Chin, A. (2021) Local knowledge surveys with small-scale fishers indicate challenges to sawfish conservation in southern Papua New Guinea. Aquatic Conservation, Marine and Freshwater Ecosystems, in press
Harris, J.L. & Stevens, G.M.W. (2021) Environmental drivers of reef manta ray (Mobula alfredi) visitation patterns to key aggregation habitats in the Maldives. Plos One, 16(6), Article e0252470
Heather, F.J. & Stuart-Smith, R.D. & Blanchard, J.L. & Fraser, K.M. & Edgar, G.J. (2021) Reef communities show predictable undulations in linear abundance size spectra from copepods to sharks. Ecology Letters, in press
Jones, J.S. & Porter, A. & Munoz-Perez, J.P. & Alarcon-Ruales, D. & Galloway, T.S. & Godley, B.J. & Santillo, D. & Vagg, J. & Lewis, C. (2021) Plastic contamination of a Galapagos Island (Ecuador) and the relative risks to native marine species. Science of the Total Environment, 789, Article 147704
Kebapcioglu, T. (2021) Discarded Elasmobranchs in shrimp trammel net fishery in southern Turkey (Northeastern Mediterranean Sea). Cahiers De Biologie Marine, 62(2), 187–194
Kondo, H. & Fujimura, T. & Murotani, F. & Yazawa, R. & Tani, R. & Hirono, I. (2021) Preliminary characterization of pathogen-detection activities of serum antibodies from the banded houndshark Triakis scyllium. Developmental and Comparative Immunology, 124, Article 104186
Kraft, D. & Meyer, L. & Webb, M. & Scidmore-Rossing, K. & Huveneers, C. & Clua, E. & Meyer, C. (2021) Development and successful real-world use of a transfer DNA technique to identify species involved in shark bite incidents. Journal of Forensic Sciences, in press
Kuraku, S. (2021) Shark and ray genomics for disentangling their morphological diversity and vertebrate evolution. Developmental Biology, 477, 262–272
Larre, G.G. & Pinheiro, L.M. & dos Santos, M.L. & Danilewicz, D. & Ott, P.H. & Sucunza, F. (2021) New data on bycatch of the Brazilian Guitarfish, Pseudobatos horkelii, in Southern Brazil. Journal of Applied Ichthyology, in press
Lear, K.O. & Whitney, N.M. & Morris, J.J. & Gleiss, A.C. (2021) Temporal niche partitioning as a novel mechanism promoting co-existence of sympatric predators in marine systems. Proceedings of the Royal Society of London, Series B, 288(1954), Article 20210816
Lim, K.C. & Then, A.Y.-H. & Wee, A.K.S. & Sade, A. & Rumpet, R. & Loh, K.-H. (2021) Brown banded bamboo shark (Chiloscyllium punctatum) shows high genetic diversity and differentiation in Malaysian waters. Scientific Reports, 11, Article 14874
Liu, K.M. & Huang, Y.W. & Hsu, H.H. (2021) Management Implications for Skates and Rays Based on Analysis of Life History Parameters. Frontiers in Marine Science, 8, Article 664611
Livernois, M.C. & Fujiwara, M. & Fisher, M. & Wells, R.J.D. (2021) Seasonal patterns of habitat suitability and spatiotemporal overlap within an assemblage of estuarine predators and prey. Marine Ecology Progress Series, 668, 39–55
López-Angarita, J. & Villate-Moreno, M. & Díaz, J.M. & Cubillos-M, J.C. & Tilley, A. (2021) Identifying nearshore nursery habitats for sharks and rays in the Eastern Tropical Pacific from fishers’ knowledge and landing. Ocean & Coastal Management, 213, Article 105825
MacDonald, C. & Jerome, J. & Pankow, C. & Perni, N. & Black, K. & Shiffman, D. & Wester, J. (2021) First identification of probable nursery habitat for critically endangered great hammerhead Sphyrna mokarran on the Atlantic Coast of the United States. Conservation Science and Practice, 3(8), Article e418
Madduppa, H. & Cahyani, N.K.D. & Anggoro, A.W. & Subhan, B. & Jefri, E. & Sani, L.M.I. & Arafat, D. & Akbar, N. & Bengen, D.G. (2021) eDNA metabarcoding illuminates species diversity and composition of three phyla (chordata, mollusca and echinodermata) across Indonesian coral reefs. Biodiversity and Conservation, in press
Malpica-Cruz, L. & Abadia-Cardoso, A. & Aquino-Baleyto, M. & Beas-Luna, R. & Becerril-Garcia, E.E. & Castillo-Geniz, J.L. & Galvan-Magana, F. & Garcia-Rodriguez, E. & Herzka, S.Z. & Hoyos-Padilla, E.M. & Lara-Mendoza, R.E. & Lorda, J. & Onate-Gonzalez, E.C. & Perez-Weil, R.J. & Saavedra-Sotelo, N.C. & Santana-Morales, O. & Towns, V. & Zepeda-Dominguez, J.A. (2021) Empowering fishers for Great White Shark stewardship: Reply to Madigan et al. 2021. Conservation Letters, in press
Marra, N.J. & Stanhope, M.J. & Jue, N.K. & Richards, V.P. & O'Brien, S.J. & Antunes, A. & Shivji, M.S. (2021) Commentary: Unbiasing Genome-Based Analyses of Selection: An Example Using Iconic Shark Species. Frontiers in Marine Science, 8, Article 696523
Meenakshisundaram, A. & Thomas, L. & Kennington, W.J. & Thums, M. & Lester, E. & Meekan, M. (2021) Genetic markers validate photo-identification and uniqueness of spot patterns in whale sharks. Marine Ecology Progress Series, 668, 177–183
Micarelli, P. & Chieppa, F. & Pacifico, A. & Rabboni, E. & Reinero, F.R. (2021) Passive Prey Discrimination in Surface Predatory Behaviour of Bait-Attracted White Sharks from Gansbaai, South Africa. Animals, 11(9), Article 2583
Micarelli, P. & Reinero, F.R. (2021) Preliminary data about nursery survey of Nursehound, Scyliorhinus stellaris (Linnaeus, 1758), around the peninsula of Monte Argentario (Tuscany, Italy) using a new tool: Poseidon R.O.V. (Remote Operative Vehicle). Academia Letters, Article 2013
Mohidin, N. & Hajisamae, S. & Abdullah, M.M. & Hashim, M. & Habib, A. & Islam, R. & Fazrul, H. (2021) Species Composition and Distribution Pattern of Stingrays in the Coastal Waters of Terengganu, Malaysia, the South China Sea. Chiang Mai Journal of Science, 48(4), 1009–1020
Montero-Quintana, A.N. & Ocampo-Valdez, C.F. & Vazquez-Haikin, J.A. & Sosa-Nishizaky, O. & Osorio-Beristain, M. (2021) Whale shark (Rhincodon typus) predatory flexible feeding behaviors on schooling fish. Journal of Ethology, in press
Mourier, J. & Soria, M. & Blaison, A. & Simier, M. & Certain, G. & Demichelis, A. & Hattab, T. (2021) Dynamic use of coastal areas by bull sharks and the conciliation of conservation and management of negative human-wildlife interactions. Aquatic Conservation, Marine and Freshwater Ecosystems, in press
Mulas, A. & Bellodi, A. & Carbonara, P. & Cau, A. & Marongiu, M.F. & Pesci, P. & Porcu, C. & Follesa, M.C. (2021) Bio-Ecological Features Update on Eleven Rare Cartilaginous Fish in the Central-Western Mediterranean Sea as a Contribution for Their Conservation. Life, 11(9), Article 871
Murua, H. & Griffiths, S.P. & Hobday, A.J. & Clarke, S.C. & Cortes, E. & Gilman, E.L. & Santiago, J. & Arrizabalaga, H. & de Bruyn, P. & Lopez, J. & Aires-da-Silva, A.M. & Restrepo, V. (2021) Shark mortality cannot be assessed by fishery overlap alone. Nature, 595(7866), E4–E7
Nash, C.S. & Darby, P.C. & Frazier, B.S. & Hendon, J.M. & Higgs, J.M. & Hoffmayer, E.R. & Daly-Engel, T.S. (2021) Multiple paternity in two populations of finetooth sharks (Carcharhinus isodon) with varying reproductive periodicity. Ecology and Evolution, in press
Navalo, J. & Mark, J. & Victoria, V. & Morales-Saldana, J.M. (2021) A preliminary assessment of shark captures by a small-scale fishery in the central Caribbean coast of Panama. Journal of Applied Ichthyology, in press
Nicholson-Jack, A.E. & Harris, J.L. & Ballard, K. & Turner, K.M.E. & Stevens, G.M.W. (2021) A hitchhiker guide to manta rays: Patterns of association between Mobula alfredi, M. birostris, their symbionts, and other fishes in the Maldives. Plos One, 16(7), Article e0253704
Ordines, F. & Valls, M. & Meléndez, M.J. & Ramírez-Amaro, S. & López, E. & Lloret, L. & Rodríguez, M. & Farriols, M.T. & Guijarro, B. & García-Ruiz, C. & Massutí, E. (2021) Potential factors influencing the condition of demersal sharks in the Mediterranean deep sea ecosystems. Deep Sea Research Part I: Oceanographic Research Papers, 176, Article 103603
Phillips, N.M. & Devloo-Delva, F. & McCall, C. & Daly-Engel, T.S. (2021) Reviewing the genetic evidence for sex-biased dispersal in elasmobranchs. Reviews in Fish Biology and Fisheries, in press
Queiroz, N. & Humphries, N.E. & Couto, A. & Vedor, M. & da Costa, I. & Sequeira, A.M.M. & Mucientes, G. & Santos, A.M. & Abascal, F.J. & Abercrombie, D.L. & Abrantes, K. & Acuna-Marrero, D. & Afonso, A.S. & Afonso, P. & Anders, D. & Araujo, G. & Arauz, R. & Bach, P. & Barnett, A. & Bernal, D. & Berumen, M.L. & Lion, S.B. & Bezerra, N.P.A. & Blaison, A.V. & Block, B.A. & Bond, M.E. & Bonfil, R. & Bradford, R.W. & Braun, C.D. & Brooks, E.J. & Brooks, A. & Brown, J. & Bruce, B.D. & Byrne, M.E. & Campana, S.E. & Carlisle, A.B. & Chapman, D.D. & Chapple, T.K. & Chisholm, J. & Clarke, C.R. & Clua, E.G. & Cochran, J.E.M. & Crochelet, E.C. & Dagorn, L. & Daly, R. & Cortes, D.D. & Doyle, T.K. & Drew, M. & Duffy, C.A.J. & Erikson, T. & Espinoza, E. & Ferreira, L.C. & Ferretti, F. & Filmalter, J.D. & Fischer, G.C. & Fitzpatrick, R. & Fontes, J. & Forget, F. & Fowler, M. & Francis, M.P. & Gallagher, A.J. & Gennari, E. & Goldsworthy, S.D. & Gollock, M.J. & Green, J.R. & Gustafson, J.A. & Guttridge, T.L. & Guzman, H.M. & Hammerschlag, N. & Harman, L. & Hazin, F.H.V. & Heard, M. & Hearn, A.R. & Holdsworth, J.C. & Holmes, B.J. & Howey, L.A. & Hoyos, M. & Hueter, R.E. & Hussey, N.E. & Huveneers, C. & Irion, D.T. & Jacoby, D.M.P. & Jewell, O.J.D. & Johnson, R. & Jordan, L.K.B. & Joyce, W. & Daly, C.A.K. & Ketchum, J.T. & Klimley, A.P. & Kock, A.A. & Koen, P. & Ladino, F. & Lana, F.O. & Lea, J.S.E. & Llewellyn, F. & Lyon, W.S. & MacDonnell, A. & Macena, B.C.L. & Marshall, H. & McAllister, J.D. & Meyer, M.A. & Morris, J.J. & Nelson, E.R. & Papastamatiou, Y.P. & Penaherrera-Palma, C. & Pierce, S.J. & Poisson, F. & Quintero, L.M. & Richardson, A.J. & Rogers, P.J. & Rohner, C.A. & Rowat, D.R.L. & Samoilys, M. & Semmens, J.M. & Sheaves, M. & Shillinger, G. & Shivji, M. & Singh, S. & Skomal, G.B. & Smale, M.J. & Snyders, L.B. & Soler, G. & Soria, M. & Stehfest, K.M. & Thorrold, S.R. & Tolotti, M.T. & Towner, A. & Travassos, P. & Tyminski, J.P. & Vandeperre, F. & Vaudo, J.J. & Watanabe, Y.Y. & Weber, S.B. & Wetherbee, B.M. & White, T.D. & Williams, S. & Zarate, P.M. & Harcourt, R. & Hays, G.C. & Meekan, M.G. & Thums, M. & Irigoien, X. & Eguiluz, V.M. & Duarte, C.M. & Sousa, L.L. & Simpson, S.J. & Southall, E.J. & Sims, D.W. (2021) Reply to: Shark mortality cannot be assessed by fishery overlap alone. Nature, 595(7866), E8–E16
Ruiz-Abierno, A. & Marquez-Farias, J.F. & Rojas-Corzo, A. & Miller, V. & Angulo-Valdes, J.A. & Hueter, R.E. (2021) Seasonal Abundance and Size Structure of Sharks Taken in the Pelagic Longline Fishery off Northwestern Cuba. Marine and Coastal Fisheries, 13(3), 275–291
Rupp, A. & Bornatowski, H. (2021) Food web model to assess the fishing impacts and ecological role of elasmobranchs in a coastal ecosystem of Southern Brazil. Environmental Biology of Fishes, in press
Santos, L.M. & Lang, A. & Wahidi, R. & Bonacci, A. & Gautam, S. & Devey, S. & Parsons, J. (2021) Passive separation control of shortfin mako shark skin in a turbulent boundary layer. Experimental Thermal and Fluid Science, 128, Article 110433
Santos, R. & Medeiros-Leal, W. & Novoa-Pabon, A. & Crespo, O. & Pinho, M. (2021) Biological Knowledge of Thornback Ray (Raja clavata) from the Azores: Improving Scientific Information for the Effectiveness of Species-Specific Management Measures. Biology, 10(7), Article 676
Seamone, S.G. & Syme, D.A. (2021) The ocellate river stingray (Potamotrygon motoro) exploits vortices of sediment to bury into the substrate. Journal of Fish Biology, in press
Shanaka, K. & Jung, S. & Janson, N.D. & Jayasingha, J.R.P. & Madushani, K.P. & Kim, M.J. & Lee, J. (2021) Growth and Antioxidant-Related Effects of the Reestablished Ascorbic Acid Pathway in Zebrafish (Danio rerio) by Genomic Integration of L-Gulonolactone Oxidase From Cloudy Catshark (Scyliorhinus torazame). Frontiers in Physiology, 12, Article 685595
Soto-Lopez, K. & Garcia-Vazquez, G. & Martinez-Ayala, J.C. & Galvan-Magana, F. & Ochoa-Baez, R.I. (2021) First record of clasper malformation of Pseudobatos buthi (Chondrichthyes: Rhinobatidae) in the Gulf of California. Journal of the Marine Biological Association of the United Kingdom, 101(2), 449–455
Spies, I. & Orr, J.W. & Stevenson, D.E. & Goddard, P. & Hoff, G. & Guthridge, J. & Hollowed, M. & Rooper, C. (2021) Skate egg nursery areas support genetic diversity of Alaska and Aleutian skates in the Bering Sea. Marine Ecology Progress Series, 669, 121–138
Tate, R.D. & Kelaher, B.P. & Brand, C.P. & Gallen, C.R. & Smith, S.D.A. & Butcher, P.A. (2021) Shark behaviour and marine faunal assemblage beneath SMART drumlines. Fisheries Research, 243, Article 106102
Thorburn, J. & Wright, P.J. & Lavender, E. & Dodd, J. & Neat, F. & Martin, J.G.A. & Lynam, C. & James, M. (2021) Seasonal and Ontogenetic Variation in Depth Use by a Critically Endangered Benthic Elasmobranch and Its Implications for Spatial Management. Frontiers in Marine Science, 8, Article 656368
TinHan, T.C. & Wells, R.J.D. (2021) Spatial and Ontogenetic Patterns in the Trophic Ecology of Juvenile Bull Sharks (Carcharhinus leucas) From the Northwest Gulf of Mexico. Frontiers in Marine Science, 8, Article 664316
Tomita, T. & Nakamura, M. & Miyamoto, K. & Nozu, R. & Toda, M. & Murakumo, K. & Sato, K. (2021) Clasper pocket: adaptation of a novel morphological feature by lamnoid sharks, which aids with tuna-like swimming. Zoomorphology, in press
Tomita, T. & Toda, M. & Murakumo, K. & Miyamoto, K. & Matsumoto, R. & Ueda, K. & Sato, K. (2021) Volume of the whale shark and their mechanism of vertical feeding. Zoology, 147, Article 125932
Vedor, M. & Mucientes, G. & Hernandez-Chan, S. & Rosa, R. & Humphries, N. & Sims, D.W. & Queiroz, N. (2021) Oceanic Diel Vertical Movement Patterns of Blue Sharks Vary With Water Temperature and Productivity to Change Vulnerability to Fishing. Frontiers in Marine Science, 8, Article 688076

Extinct Chondrichthyes:

Barkaszi, Z & Kovalchuk, O. (2021) New records of Oligocene selachians (Elasmobranchii) from the Outer Carpathian Basin. Neues Jahrbuch für Geologie und Paläontologie, Abhandlungen, 301(2), 171–182
Bosio, G. & Collareta, A. & Di Celma, C. & Lambert, O. & Marx, F.G. & de Muizon, C. & Gioncada, A. & Gariboldi, K. & Malinverno, E. & Malca, R.V. & Urbina, M. & Bianucci, G. (2021) Taphonomy of marine vertebrates of the Pisco Formation (Miocene, Peru): Insights into the origin of an outstanding Fossil-Lagerstatte. Plos One, 16(7), Article e0254395
Carpenter, K. & Itano, W.M. (2021) Comment (Case 3779) – Petalodus hastingsii Owen 1840–1845 (Chondrichthyes, Petalodontiformes, Petalodontidae): proposed conservation of usage by designation of a neotype. Bulletin of Zoological Nomenclature, 78, 137
Carrillo-Briceño, J.D. & Sánchez, R. & Scheyer, T.M. & Carrillo, J.D. & Delfino, M. & Georgalis, G.L. & Kerber, L. & Ruiz-Ramoni, D. & Birindelli, J.L. O. & Cadena, E.-A. & Rincón, A.F. & Chavez-Hoffmeister, M. & Carlini, A.A. & Carvalho, M.R. & Trejos-Tamayo, R. & Vallejo, F. & Jaramillo, C. & Jones, D.S. & Sánchez-Villagra, M.R. (2021) A Pliocene–Pleistocene continental biota from Venezuela. Swiss Journal of Palaeontology, 140, Article 9
Cicimurri, D.J. & Weems, R.W. (2021) First record of Ptychotrygon rugosum (Case, Schwimmer, Borodin, and Leggett, 2001) (Batomorphii, Sclerorhynchiformes, Ptychotrygonidae) in the United States Atlantic Coastal Plain. Journal of Vertebrate Paleontology, in press
Cui, X.D. & Qu, Q.M. & Andreev, P.S. & Li, Q. & Mai, H.J. & Zhu, M. (2021) Modeling scale morphogenesis in a Devonian chondrichthyan and scale growth patterns in crown gnathostomes. Journal of Vertebrate Paleontology, in press
Cusumano, A. & D’Arpa, C. & Duffin, C.J. (2021) Taxonomic revision of the shark Sphenodus in the Jurassic collections of the “Museo Geologico G.G. Gemmellaro” (Palermo, Sicily). Bollettino della Società Paleontologica Italiana, 60 (2), 2021, 169–181  
De Pasqua, J. & Agnolin, F. & Aranciaga Rolando, A.M. & Bogan, S. & Gambetta, D. (2021) First occurrence of the giant shark Carcharocles megalodon (Agassiz, 1843) (Lamniformes; Otodontidae) at Buenos Aires Province, Argentina. Revista Brasileira de Paleontologia, 24(2), 141–148
Duffin, C.J. (2021) A replacement name for the preoccupied genus name Vallisia Duffin, 1982 (Chondrichthyes: Neoselachii). Neues Jahrbuch für Geologie und Paläontologie, Abhandlungen, 301(2), 229–232
Gai, Z. & Bai, Z. & Lin, X. & Meng, X. & Zhang, J. (2021) First Record of Petalodus Owen, 1840 (Chondrichthyes, Petalodontidae) in the Lower Permian (Cisuralian) of China Acta Geologica Sinica, 95(4), 1057–1064
Hoedemakers, C. & Dufraing, L. (2021) Elasmobranchii uit het Zand van Edegem (Mioceen van België). Afzettingen WTKG, 42(2), 48–61  
Lira-Beltran, R.M. & Gonzalez-Barba, G. & Macias, J.L. & Solis-Anorve, A. & Garcia-Tenorio, F. & Garcia-Sanchez, L. & Osorio-Ocampo, S. (2021) Erratum to Shark and ray fauna of the Tirabuzón Formation (Pliocene) in El Álamo Canyon, Sierra de Reforma - Aguajito, Baja California Sur, Mexico [Rev. Mex. Cienc. Geol., 37-1 (2020), 40-63] Revista Mexicana de Ciencias Geológicas, 38(2), 150–151  
Migom, F. & Christiaens, Y. & Deceuckeleire, M. (2021) The Lower Eocene (Ypresian) Chondrichthyes from Egem, Belgium. Part 1, Orders: Hexanchiformes, Squaliformes, Squatiniformes, Heterodontiformes and Orectolobiformes. Palaeo Ichthyologica, 15, 1–55  
Mottequin, B. & Goolaerts, S. & Hunt, A.P. & Olive, S. (2021) The erroneous chondrichthyan egg case assignments from the Devonian: implications for the knowledge on the evolution of the reproductive strategy within chondrichthyans. The Science of Nature, 108, Article 36
Popov, E.V. & Shapovalov, K.M. (2021) A New Genus of Elephant Fish (Holocephali: Callorhinchidae) from the Late Jurassic of Central Russia. Paleontological Journal, 55(4), 410–420


Bullard, S.A. & Warren, M.B. & Dutton, H.R. (2021) Redescription of Cathariotrema selachii (MacCallum, 1916) Johnston and Tiegs, 1922 (Monogenoidea: Monocotylidae), Emendation of Monotypic Cathariotrema Johnston and Tiegs, 1922, and Proposal of Cathariotrematinae n. subfam. based on Morphological and Nucleotide Evidence. Journal of Parasitology, 107(3), 481–513
Franzese, S. & Ivanov, V.A. (2021) Two new species of Scalithrium (Cestoda: Rhinebothriidea) from rajiform batoids of the Argentine Sea. Zootaxa, 5005(1), 62–76
Hayes, P.M. & Christison, K.W. & Vaughan, D.B. & Smit, N.J. & Boxshall, G.A. (2021) Sea lice (Copepoda: Caligidae) from South Africa, with descriptions of two new species of Caligus. Systematic Parasitology, 98(4), 369–397
Jensen, K. & Pen, I.A.M. & Caira, J.N. (2021) A revision of the Rhoptrobothriidae (Cestoda: "Tetraphyllidea"). Zootaxa, 4999(3), 201–218
Warren, M.B. & Bullard, S.A. (2021) Fish blood flukes (Digenea: Aporocotylidae) from Indonesia: Two new genera and species infecting the banded eagle ray, Aetomylaeus nichofii (Bloch and Schneider, 1801) Capap acute accent e and Desoutter, 1979 (Myliobatiformes: Myliobatidae) from Borneo. International Journal for Parasitology–Parasites and Wildlife, 15, 43–50




Shark diversity unaffected when the dinosaurs were wiped out, study finds

Selective extinction of apex predators suggests a shift to more generalist diets

Date: August 10, 2021
Source: PLOS
Summary: A global catastrophe 66 million years ago led to the extinction of all non-avian dinosaurs, and large marine reptiles like mosasaurs and plesiosaurs. But what happened to the sharks? According to a new study, shark-tooth diversity remained relatively constant across the mass extinction event at the end of the Cretaceous.

Full story


Understanding cookiecutter sharks

University of Delaware examines the diet and habitat of the elusive Cookiecutter shark

Date: August 23, 2021
Source: University of Delaware
Summary: A little understood species of shark, known for taking cookie cutter-shaped bites out of everything from white sharks and whales to the rubber coated sonar sensors on submarines and even underwater electrical cables, is the subject of a new study. While the deep sea dwelling Cookiecutter shark will take a chomp out of anything it encounters in the upper reaches of the ocean, it really feasts on crustaceans, squid and small fish found in their habitat.

Full story


Protruding eyes, mouth make stingrays more hydrodynamically efficient

Simulated stingrays show boost in thrust, cruising speed, and overall efficiency, pointing to potential design principles in next-generation aquatic vehicles

Date: August 31, 2021
Source: American Institute of Physics
Summary: Researchers detail how the protruding eyes and mouths on simulated stingrays affect a range of forces involved in propulsion, such as pressure and vorticity. They created a computer model of a self-propelled flexible plate that mimicked a stingray's up-and-down harmonic oscillations and used it to illustrate the complex interplay between hydrodynamic forces. The group found that the eyes and mouth help streamline stingrays even further.

Full story


Tiger sharks have social preferences for one another

New research indicates that baited shark diving can influence tiger shark social behavior

Date: September 3, 2021
Source: University of Miami Rosenstiel School of Marine & Atmospheric Science
Summary: Scientists have found that tiger sharks, often considered a solitary nomadic species, are social creatures, having preferences for one another.

Full story


Haaien taggen, hoe doe je dat?

Blog: Tijgerhaaien taggen in de Cariben


New IUCN Shark News Newsletter is out!