NEWSLETTER 03/2023 13.03.2023

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

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

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

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.
Open Access!

New publication by team shark-references, a comment to a published record of Mitsukurina owstoni with the reply of the authors.
Original publication:
4.4 First record of the goblin shark Mitsukurina owstoni Jordan, 1898 (Lamniformes: Mitsukurinidae) in the Mediterranean Sea” by Athanasios Anastasiadis, Evangelos Papadimitriou and Frithjof C. Küpper in: Kousteni, V., Anastasiadis, A., Bariche, M., Battaglia, P., Bonifazi, A. et al. (2022). New records of rare species in the Mediterranean Sea (May 2022). Mediterranean Marine Science, 23 (3), 417-446.
download: https://ejournals.epublishing.ekt.gr/index.php/hcmr-med-mar-sc/article/view/28372/23363

"...Considering that the specimen reported herein did not exceed 80 cm in total length, it could be considered as a juvenile M. owstoni, suggesting that the species reproduction may occur in the Mediterranean Sea."

Our Comment....

Pollerspöck, J.
 & Weigmann, S. & Seret, B. & Straube, N.  (2023) Comment on “4.4 First record of the goblin shark Mitsukurina owstoni Jordan, 1898 (Lamniformes: Mitsukurinidae) in the Mediterranean Sea” by Athanasios Anastasiadis, Evangelos Papadimitriou and Frithjof C. Küpper in: Kousteni, V., Anastasiadis, A., Bariche, M., Battaglia, P., Bonifazi, A. et al. (2022). New records of rare species in the Mediterranean Sea (May 2022). Mediterranean Marine Science, 23 (3), 417-446; Mediterranean Marine Science, 24(1), 101–103
download: https://ejournals.epublishing.ekt.gr/index.php/hcmr-med-mar-sc/article/view/31742/25820

The Reply...
Anastasiadis, A. & Papadimitriou, E. & Küpper, F.C.  2023 Reply to Comment on “First record of the goblin shark Mitsukurina owstoni Jordan, 1898 (Lamniformes: Mitsukurinidae) in the Mediterranean Sea” by Jürgen Pollerspöck, Simon Weigmann, Bernard Seret and Nicolas Straube. Mediterranean Marine Science, 24 (1), 101-103.    Mediterranean Marine Science, 24(1), 104–108.
download: https://ejournals.epublishing.ekt.gr/index.php/hcmr-med-mar-sc/article/view/32478/25821

"... The specimen presented in Figure 17 (Kousteni et al., 2022) is about 17-20 cm in length, according to the citizen’s observations, and it might be considered an embryo, since the known size at birth is 80-100 cm (Ebert & Dando, 2020)...."


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 25408 (last month: 25269) references are changed.



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

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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 (85 Likes/Emojis, 23 Shares):

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
Here, based on extant sharks from which morphological and behavioural characteristics are known, the authors assess the extent to which isolated teeth can serve as proxies for functional traits. To do so, they first review the scientific literature on extant species to evaluate the use of shark dental characters as proxies for ecology to then perform validation analyses based on an independent data set collected from museum collections. Their results reveal that 12 dental characters have been used in shark literature as proxies for three functional traits: body size, prey preference and feeding mechanism. From all dental characters identified, tooth size and cutting edge are the most widely used.

Nr. 2 (75 Likes/Emojis, 19 Shares):

The Chilean #torpedo #Tetronarce tremens is recorded for the first time in the Mexican #Pacific. A single male specimen was captured by artisanal fishermen using a bottom-set gillnet off San Agustinillo, Oaxaca. The specimen identification was based on morphology and confirmed by DNA barcoding of the cytochrome oxidase subunit I gene and its comparison with sequences available in online repositories. A phylogenetic analysis of Tetronarce resulted in the clustering of three species that inhabit the Pacific Ocean: Tetronarce tremens, Tetronarce californica and Tetronarce tokionis. This study provides the northernmost record of Tetronarce tremens in the Eastern Pacific Ocean, an atypical sighting beyond its native distribution range in tropical and temperate waters off South America.
Thanks to Fernando Ruiz, Universidad del Mar, Mexico for sharing.
Ruiz-Escobar, F. & OcegueraFigueroa, A. & Islas-Villanueva, V. 2023 Northernmost record of the Chilean torpedo Tetronarce tremens from tropical coastal waters of the Mexican Pacific. Journal of the Marine Biological Association of the United Kingdom, 103, Article e6

Nr. 3 (64 Likes/Emojis, 13 Shares):

Restudy of Campyloprion annectans Eastman, 1902 from North America demonstrated that neither specimen included is diagnostic at the species level; thus, the species name is a nomen dubium. Since this species was designated as the type species of the genus, this requires suppression of the generic name also. Another species earlier assigned to Campyloprion, Campyloprion ivanovi Karpinsky, 1924 is used as a type for a newly established genus Karpinskiprion Lebedev et Itano gen. nov. The composition of the family Helicoprionidae Karpinsky, 1911 is reviewed, and a new family Helicampodontidae Itano et Lebedev fam. nov. is erected. A new specimen of Karpinskiprion ivanovi (Karpinsky, 1924) recently discovered in the Volgograd Region of Russia is the most complete Karpinskiprion specimen ever found.
Lebedev, O. & Itano, W. & Johanson, Z. & Alekseev, A. & Smith, M. & Ivanov, A. & Novikov, I. 2023 Tooth whorl structure, growth and function in a helicoprionid chondrichthyan Karpinskiprion (nom. nov.) (Eugeneodontiformes) with a revision of the family composition. Earth and Environmental Science Transactions of The Royal Society of Edinburgh, in press
Photograph by Oleg Lebedev


New Images

Many thanks to the following people for providing images:

Frederik Mollen, Elasmobranch Research, Belgium for images of Squatina japonica

Fernando Ruiz-Escobar for a image of Tetronarce tremens

Jean-Francois LHOMME for images of
Premontreia (Premontreia) degremonti
Premontreia (Oxyscyllium) gilberti
Galeorhinus ypresiensis
Palaeohypotodus rutoti
Squatina prima
Hypolophodon sylvestris
Isurolamna inflata
Aktaua kizylkumensis
Galeocerdo eaglesomei
Petalodus ohioensis
Dalpiazia stromeri
Heterodontus boussioni
Anomotodon hermani
Cederstroemia havreensis

Adam Anderson for a image of Megachasma pelagios

Jesco Seifert for images of Centrophorus longipinnis  and Mustelus punctulatus

 Franklin Solis Carbache for images of Aetobatus laticeps

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.

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



Upcoming Meetings:


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



Sharks MOS4 - 4th Meeting of the Signatories to the Memorandum of Understanding on the Conservation of Migratory Sharks


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.


Indo-Pacific Fish Conference and the Australian Society for Fish Biology

20-24 November 2023, Auckland, New Zealand
Keep me updated

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!



Biology and Ecology of Chondrichthyans: from the past to the present

Organisers: Patrick L. Jambura, Julia Türtscher, Eduardo Villalobos-Segura & Esther Manzanares Ubeda


Chondrichthyans, or cartilaginous fishes, are the sister group to all other living gnathostomes and are one of the most successful vertebrate groups in Earth’s history. Currently, the class Chondrichthyes comprises two major groups, the Elasmobranchii (sharks and rays) and the Holocephali (chimaeras). Together they encompass over 400 million years of independent evolution and have survived all five mass and several minor extinction events. Throughout its long evolutionary history, this group has inhabited a wide range of marine and freshwater environments and comprises many keystone taxa for ecosystem functioning and maintenance in modern marine ecosystems. Although most chondrichthyans are mesopredators, the few large and iconic apex predators like the white shark or megalodon have captured the imagination of humanity since ancient times. Unfortunately, this fascination, coupled with fear, misinformation, and the high economic value of chondrichthyan products, has led to a steep decline of chondrichthyan populations in the last decades and many species are threatened by extinction today.

This thematic session aims to create a space for presenting, sharing, and discussing recent advances in chondrichthyan research. This includes (but is not limited to) the early evolutionary history, such as events of the first appearance and dominance of holocephalans in the Devonian-Carboniferous (including the end-Devonian extinction event), the rise of modern groups of elasmobranchs in the Mesozoic (Jurassic-Cretaceous), extinction and recovery after the K/Pg boundary, and the evolution of chondrichthyans during the Cenozoic.

Discussion and the exchange of ideas are essential to understand the dynamics that have driven the evolution of this iconic group, especially times immediately before, during, and after extinction events are of special interest in the light of the current anthropogenically induced extinction event. We welcome any contributions that focus on chondrichthyans from all geological periods. Also work on recent taxa can be presented here, however, we strongly encourage topics with an evolutionary background.


Fossil Fish symposium at XVII European Congress of Ichthyology 2023, 4th – 8th September 2023, Prague
On September 4-8, 2023, the European Congress of Ichthyology (ECI XVII) will take place in the wonderful city of Prague (Czech Republic). Following earlier meetings of the informal palaeoichtyologist community in Munich (2019) and Paris (2022), ECI XVII is a great opportunity for our next ‘Fossil Fish symposium’. Please see the attachment for its description.
The Website for ECI XVII is: http://eci23.agrobiologie.cz/
Abstract submission deadline is March 30, 2023
Registration deadline is June 15, 2023
We would be very pleased if you would like to attend and to contribute. Please forward this e-mail also to the members of your group and colleagues.
With our best wishes and looking forward to seeing you in Prague
The organization team of the symposium
Gloria Arratia (University of Kansas, Lawrence, USA)
Olga Otero (Université de Poitiers, France)
Tomáš Přikryl (Institute of Geology, Praha, Czech Republic)
Bettina Reichenbacher (Ludwig-Maximilians-University, Munich, Germany)


Extant Chondrichthyes:
no news this month!

Extinct Chondrichthyes:

Begat, A. & Kriwet, J. & Gelfo, J.N. & Cavalli, S.G. & Schultz, J.A. & Martin, T. (2023) The first southern hemisphere occurrence of the extinct Cretaceous sclerorhynchoid sawfish Ptychotrygon (Chondrichthyes, Batoidea), with a review of Ptychotrygon taxonomy. Journal of Vertebrate Paleontology, in press
New species: Ptychotrygon ameghinorum
Abstract: A new extinct sclerorhynchoid sawfish, Ptychotrygon ameghinorum sp. nov., is presented here based on abundant isolated teeth and some dermal denticles, which were recovered from the Mata Amarilla Formation, belonging to the lower Upper Cretaceous of the Santa Cruz Province in the Austral Basin of Patagonia, Argentina. This new species is the first Ptychotrygon occurrence in the southern hemisphere, which so far only has been reported from northern hemisphere deposits (Europe, North Africa, and North America). The presence of P. ameghinorum sp. nov. in these southern high-latitude deposits of Patagonia, Argentina, extends the geographic range of Ptychotrygon considerably southwards. This distribution pattern in the “middle” Cretaceous seems to correlate with the South Atlantic opening at the end of the Albian. The presence of lateral cephalic dermal denticles and the simultaneous absence of rostral denticles in the abundant fossil material support the view that Ptychotrygon did not develop such rostral structures. A reinvestigation of all known species assigned to Ptychotrygon reveals that P. ellae is a junior synonym of P. boothiP. benningensis belongs to TexatrygonP. rugosum belongs to Asflapristis, and P. clementsi represents an unidentifiable species (Ptychotrygon? sp.). The stratigraphic distribution demonstrates that Ptychotrygon might have originated in the Albian in south-western Europe and subsequently dispersed to obtain its widest distribution during the Cenomanian. In the Coniacian, a steep diversity decline is recognizable with a subsequent distribution shift from Europe to North America.

no news this month!


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

Latest Research Articles

Extant Chondrichthyes:
Akhilesh, K.V. & Kizhakudan, Shoba Joe & Muktha, M. & Najmudeen, T.M. & Thomas, Sujitha & Karnad, Divya & Sutaria, Dipani & Fernandes, Merwyn & Gupta, Trisha & Namboothri, Naveen & Patankar, Vardhan & Sen, Swatipriyanka & Varghese, Sijo P. & Kumar, A.Biju & Barnes, Alissa & Bineesh, K.K. & John, Sajan & Gangal, Mayuresh & Hashim, M. & Malayilethu, Vinod & Tyabji, Zoya & Vaz, Malaika & Sukumaran, Sandhya & Purushottama, G.B. & Wilson, Livi & Mahesh, V. & Nair, Rekha J. & Remya, L. & Rahangdale, Shikha & Manojkumar, P.P. & Sivakumar, K. & Vivekanandan, E. & Zacharia, P.U. & Gopalakrishnan, A. (2023): Elasmobranch conservation, challenges and management strategy in India: recommendations from a national consultative meeting. Current Science, 124(3), 292–303 https://dx.doi.org/10.18520/cs/v124/i3/292-303
Balanin, S. & Hauser-Davis, R.A. & Giareta, E. & Charvet, P. & Wosnick, N. (2023): Almost nothing is known about the tiger shark in South Atlantic waters. Peerj, 11, Article e14750 https://dx.doi.org/10.7717/peerj.14750
Bass, N.C. & Hussey, N.E. & Brown, C. (2023): Using stable-isotope analysis and acoustic telemetry data to infer broad-scale migration patterns of Port Jackson sharks (Heterodontus portusjacksoni). Marine and Freshwater Research, 74(4), 387–397 https://dx.doi.org/10.1071/MF22180
Booth, H. & Ramdlan, M.S. & Hafizh, A. & Wongsopatty, K. & Mourato, S. & Pienkowski, T. & Adrinato, L. & Milner-Gulland, E.J. (2023): Designing locally-appropriate conservation incentives for small-scale fishers. Biological Conservation, 277(4), Article 109821 https://dx.doi.org/10.1016/j.biocon.2022.109821
Brainard, J. (2022): Countries vote for sustainable shark fishing. Science, 378(6623), 932–932
Burgos-Vázquez, M.I. & Cruz-Escalona, V.H. & Hernández-Camacho, C.J. & Peña, R. & Ceballos-Vázquez, B.P. & Mejía-Falla, P.A.  (2023): Contrasting the reproductive potential of Narcine entemedor and Rhinoptera steindachneri: 2 viviparous batoid species with different reproductive strategies. Ciencias Marinas, 49, Article e3303  https://dx.doi.org/10.7773/cm.y2023.3303
Burns, E.S. & Bradley, D. & Thomas, L.R. (2023): Global hotspots of shark interactions with industrial longline fisheries. Frontiers in Marine Science, 9, Article 1062447 https://dx.doi.org/10.3389/fmars.2022.1062447
Cabanillas-Torpoco, M. & Abbatepaulo, F. & Rodrigues, L. & Marquez, R. & Oddone, M.C. & Cardoso, L.G. (2023): Teratological records in blue shark Prionace glauca embryos from the South-western Atlantic Ocean. Journal of the Marine Biological Association of the United Kingdom, 103, Article e12 https://dx.doi.org/10.1017/s0025315422000996
Caña-Hernández, S. & Lara-Mendoza, R.E. & Mendoza-Carranza, M. & Pérez-Jiménez, J.C. (2023): Using a multimodel approach to determine the age and growth of an endangered small shark species in the southern Gulf of Mexico. Regional Studies in Marine Science, 60, Article 102836 https://dx.doi.org/10.1016/j.rsma.2023.102836
Cattano, C. & Calo, A. & Aglieri, G. & Cattano, P. & Di Lorenzo, M. & Grancagnolo, D. & Lanzarone, D. & Principato, E. & Spatafora, D. & Turco, G. & Milazzo, M. (2023): Literature, social media and questionnaire surveys identify relevant conservation areas for Carcharhinus species in the Mediterranean Sea. Biological Conservation, 277(4), Article 109824 https://dx.doi.org/10.1016/j.biocon.2022.109824
Chatzispyrou, A. & Koutsikopoulos, C. (2023): Tracing Patterns and Biodiversity Aspects of the Overlooked Skates and Rays (Subclass Elasmobranchii, Superorder Batoidea) in Greece. Diversity, 15(1), Article 55 https://dx.doi.org/10.3390/d15010055
Chin, A. & Molloy, M.J. & Cameron, D. & Day, J.C. & Cramp, J. & Gerhardt, K.G. & Heupel, M.R. & Read, M. & Simpfendorfer, C.A. (2023): Conceptual frameworks and key questions for assessing the contribution of marine protected areas to shark and ray conservation. Conservation Biology, in press https://dx.doi.org/10.1111/cobi.13917
Coulson, P.G. & Ryan, K.L. & Jackson, G. (2022): Are charter and private-boat recreational fishers learning to live with shark depredation? Marine Policy, 141, Article 105096 https://dx.doi.org/10.1016/j.marpol.2022.105096
Davey, J. & Clarke, T.M. & Niella, Y. & Dennis, J.D. & Huveneers, C. (2023): Seasonal variation in space use and residency of the southern eagle ray Myliobatis tenuicaudatus in a temperate ecosystem. Marine Ecology Progress Series, 705, 77–94 https://dx.doi.org/10.3354/meps14232
de Klerk, J.N. & Robinson, P.A. (2022): Residency, movement patterns, behavior and demographics of reef manta rays in Komodo National Park. Peerj, 10, Article   https://dx.doi.org/10.7717/peerj.13302
de Oliveira-Junior, W.M. Spaet, Y.L.Y. & de Souza Rosa, R. & Santos, B.A. (2022): First record of the critically endangered great hammerhead shark (Sphyrna mokarran) in its natural habitat in the coast of Paraíba, Northeastern Brazil. Gaia Scientia, 16(4), 1–15 https://dx.doi.org/10.22478/ufpb.1981-1268.2022v16n4.64564
Duchatelet, L. & Nuyt, C. & Puozzo, N. & Mallefet, J. & Delroisse, J. (2023): Evolutionary conservation of photophore ultrastructure in sharks: the case of a dalatiid squalomorph. Fishes, 8, Article 87 https://dx.doi.org/10.3390/fishes8020087
Duhamet, A. & Albouy, C. & Marques, V. & Manel, S. & Mouillot, D. (2023): The global depth range of marine fishes and their genetic coverage for environmental DNA metabarcoding. Ecology and Evolution, 13(1), Article e9672 https://dx.doi.org/10.1002/ece3.9672
Edwards, M.L. & Schaefer, A.M. & McFarland, M. & Fire, S. & Perkins, C.R. & Ajemian, M.J. (2023): Detection of numerous phycotoxins in young bull sharks (Carcharhinus leucas) collected from an estuary of national significance. Science of the Total Environment, 857, Article 159602 https://dx.doi.org/10.1016/j.scitotenv.2022.159602
Eustache, K.B. & Boissin, E. & Tardy, C. & Planes, S. (2023): Characterization of 35 new microsatellite markers for the blacktip reef shark (Carcharhinus melanopterus) and cross-species amplification in eight other shark species. Molecular Biology Reports, in press https://dx.doi.org/10.1007/s11033-022-08209-z
Fauziyah, Putri, W.A.E. & Arianti, D. & Agustriani, F. & Rozirwan, Ningsih, E.N. & Purwiyanto, A.I.S. (2022): Discarded Species in Artisanal Fisheries South Sumatra, Indonesia: Case Study on Crab Gill Nets. Sains Malaysiana, 51(9), 2745–2756 https://dx.doi.org/10.17576/jsm-2022-5109-01
Ferragut-Perello, F. & Ramírez-Amaro, S. & Tsikliras, A.C. & Petit-Marty, N. & Dimarchopoulou, D. & Massutí, E. & Serrat, A. & Ordines, F. (2023): Exploitation and Conservation Status of the Thornback Ray (Raja clavata) in the Balearic Islands (Western Mediterranean). Fishes, 8(2), Article 117 https://dx.doi.org/10.3390/fishes8020117
Finotto, L. & Walker, T.I. & Reina, R.D. (2023): Influence of female reproductive state and of fishing-capture stress on the oxygen uptake rate of a viviparous elasmobranch. Journal of Experimental Zoology Part A, Ecological Genetics and Physiology, in press https://dx.doi.org/10.1002/jez.2682
Gabler-Smith, M.K. & Coughlin, D.J. & Fish, F.E. (2023): Morphological and histochemical characterization of the pectoral fin muscle of batoids. Journal of Morphology, 284(2), Article e21548 https://dx.doi.org/10.1002/jmor.21548
Goyanna, F.A.A. & Fernandes, M.B. & da Silva, G.B. & de Lacerda, L.D. (2023): Mercury in oceanic upper trophic level sharks and bony fishes-A systematic review. Environmental Pollution, 318, Article 120821 https://dx.doi.org/10.1016/j.envpol.2022.120821
Grace, M.A. & Huber, D. & Travis, K. & Doosey, M. & Ford, J. & Decker, S. & Mann, J. (2023): Simulating cookiecutter shark bites with a 3D-printed jaw-dental model. Zoomorphology, in press https://dx.doi.org/10.1007/s00435-022-00586-0
Gupta, T. & Milner-Gulland, E.J. & Dias, A. & Karnad, D. (2023): Drawing on local knowledge and attitudes for the conservation of critically endangered rhino rays in Goa, India. People and Nature, in press https://dx.doi.org/10.1002/pan3.10429
Harris, J.M. & Vinobaba, P. & Kularatne, R.K.A. & Khan, S.A. (2023): Fish diversity and assemblage in the Batticaloa lagoon, Sri Lanka. Journal of Fish Biology, in press https://dx.doi.org/10.1111/jfb.15314
Henderson, A.C. & Bruns, S. & Al Hameli, S. (2023): Smooth muscle "microsphincters" in the gastric mucosa of stingrays (Elasmobranchii, Dasyatidae). Journal of Fish Biology, in press https://dx.doi.org/10.1111/jfb.15328
Ivanov, O.A. & Shuntov, V.P. (2022): The Importance of Fish Species in Bottom and Near-Bottom Biotopes of the Far Eastern Seas and Pacific Waters of Russia. Russian Journal of Marine Biology, 48(7), 529–540 https://dx.doi.org/10.1134/s1063074022070082
Jenrette, J. & Liu, Z.Y.C. & Chimote, P. & Hastie, T. & Fox, E. & Ferretti, F. (2022): Shark detection and classification with machine learning. Ecological Informatics, 69, Article 101673 https://dx.doi.org/10.1016/j.ecoinf.2022.101673
Khalil, A.M. & Gainsford, A. & van Herwerden, L. (2023): DNA barcoding of fresh seafood in Australian markets reveals misleading labelling and sale of endangered species. Journal of Fish Biology, in press https://dx.doi.org/10.1111/jfb.15308
Lesturgie, P. & Braun, C.D. & Clua, E. & Mourier, J. & Thorrold, S.R. & Vignaud, T. & Planes, S. & Mona, S. (2023): Like a rolling stone: Colonization and migration dynamics of the gray reef shark (Carcharhinus amblyrhynchos). Ecology and Evolution, 13(1), Article e9746 https://dx.doi.org/10.1002/ece3.9746
Liu, S.Y.V. & Chen, YY. & Cheng, C. (2023): Genetic structure and relatedness of juvenile sicklefin lemon shark (Negaprion acutidens) at Dongsha Island. Scientific Reports, 13, Article 988 https://dx.doi.org/10.1038/s41598-023-28186-y
Lubitz, N. & Barnett, A. (2023): Possible range extension in the endangered and understudied winghead shark (Eusphyra blochii). Journal of Fish Biology, in press https://dx.doi.org/10.1111/jfb.15301
Lupton, C.E.M. & Bennett, W.A. (2023): Thermal Tolerance of Juvenile New England Chain Catsharks, Scyliorhinus Retifer Garman, 1881 (Chondrichthyes, Carcharhiniformes, Scyliorhinidae). Thalassas, in press https://dx.doi.org/10.1007/s41208-022-00514-5
Marcoux, T.M. & Marcoux, S.D. & Harvey, M. & Araujo, G. (2023): A first look at whale sharks in Hawaiian waters: Using citizen science to study the world's largest fish, Rhincodon typus. Aquatic Conservation–Marine and Freshwater Ecosystems, in press https://dx.doi.org/10.1002/aqc.3915
Marshall, A.D. & Flam, A.L. & Cullain, N. & Carpenter, M. & Conradie, J. & Venables, S.K. (2023): Southward range extension and transboundary movements of reef manta rays Mobula alfredi along the east African coastline. Journal of Fish Biology, in press https://dx.doi.org/10.1111/jfb.15290
Mas, F. & Cortés, E. & Coelho, R. & Defeo, O. & Forselledo, R. & Domingo, A. (2023): New insights into the reproductive biology of the blue shark (Prionace glauca) in the South Atlantic Ocean. Fisheries Research, 262, Article 106643 https://dx.doi.org/10.1016/j.fishres.2023.106643
Migom, F. & Hoedemakers, K. (2023): On the dentition of the extant species Heterodontus mexicanus and Heterodontus quoyi. Palaeo Ichthyologica, 16, 1-32
Mohan, J.A. & Romo-Curiel, A.E. & Herzka, S.Z. & Wells, R.J.D. & Miller, N.R. & Sosa-Nishizaki, O. & García-Rodríguez, E. (2023): Inferring habitat use of the Pacific White Shark using vertebral chemistry. Frontiers in Marine Science, 9, Article 1082219 https://dx.doi.org/10.3389/fmars.2022.1082219
Panpipat, W. & Limsuwanmanee, J. & Cheong, L.Z. & Chaijan, M. (2023): Role of Stingray (Himantura signifier) Non-Protein Nitrogenous Fraction on the Oxidative Stability of Lipid and Myoglobin. Foods, 12(2), Article 274 https://dx.doi.org/10.3390/foods12020274
Pearce, J.R. & Linley, T.D. & Bond, T. & Jamieson, A.J. (2023): Depth distribution of the bigeye hound shark Iago omanensis and other deep-sea species observed by baited-camera in the Red Sea. Journal of the Marine Biological Association of the United Kingdom, 103, Article e8 https://dx.doi.org/10.1017/s002531542200100x
Peterson, C.D. & Wilberg, M.J. & Cortes, E. & Courtney, D.L. & Latour, R.J. (2023): Effects of unregulated international fishing on recovery potential of the sandbar shark within the southeastern United States. Canadian Journal of Fisheries and Aquatic Sciences, 79(9), 1497–1513 https://dx.doi.org/10.1139/cjfas-2021-0345
Pini-Fitzsimmons, J. & Knott, N.A. & Brown, C. (2023): Recreational fishery discard practices influence use of tidal estuary by a large marine mesopredator. Marine and Freshwater Research, in press https://dx.doi.org/10.1071/mf22146
Pollerspöck, J. & Weigmann, S. & Seret, B. & Straube, N. (2023): Comment on “4.4 First record of the goblin shark Mitsukurina owstoni Jordan, 1898 (Lamniformes: Mitsukurinidae) in the Mediterranean Sea” by Athanasios Anastasiadis, Evangelos Papadimitriou and Frithjof C. Küpper in: Kousteni, V., Anastasiadis, A., Bariche, M., Battaglia, P., Bonifazi, A. et al. (2022). New records of rare species in the Mediterranean Sea (May 2022). Mediterranean Marine Science, 23 (3), 417-446 Mediterranean Marine Science, 24(1), 101–103 https://doi.org/10.12681/mms.31742
Purushottama, G.B. & Thomas, S. & Kizhakudan, S.J. & Zacharia, P.U. (2022): Catch composition, reproductive biology and diet of the bowmouth guitarfish Rhina ancylostomus Bloch and Shneider, 1801 (Batoidea: Rhinidae) in the eastern Arabian Sea, India. Indian Journal of Fisheries, 69(3), 1–11 https://dx.doi.org/10.21077/ijf.2022.69.3.117929-01       
Ramirez-Diaz, C. & Pena, R. & Diogo, R. & Cruz-Escalona, V.H. (2023): Comparative cranio-mandibular myology of three species of Batoidea from the Southern Gulf of California, Mexico. Journal of Morphology, 284(1), Article e21547 https://dx.doi.org/10.1002/jmor.21547       
Renshaw, S. & Hammerschlag, N. & Gallagher, A.J. & Lubitz, N. & Sims, D.W. (2023): Global tracking of shark movements, behaviour and ecology: A review of the renaissance years of satellite tagging studies, 2010-2020. Journal of Experimental Marine Biology and Ecology, 560, Article 151841 https://dx.doi.org/10.1016/j.jembe.2022.151841       
Rondon-Medicci, M. & Cardoso, L.G. & Mourato, B. & Dalla Rosa, L. (2023): Blue shark (Prionace glauca) occurrence and relative abundance in the western South Atlantic Ocean influenced by spatiotemporal variability, environmental variables, and oceanographic processes. Marine Environmental Research, 183, Article 105842 https://dx.doi.org/10.1016/j.marenvres.2022.105842       
Ruiz-Escobar, F. & OcegueraFigueroa, A. & Islas-Villanueva, V. (2023): Northernmost record of the Chilean torpedo Tetronarce tremens from tropical coastal waters of the Mexican Pacific. Journal of the Marine Biological Association of the United Kingdom, 103, Article e6 https://dx.doi.org/10.1017/S0025315422001047       
Ruiz-García, D. & García-Salinas, P. & Raga, J.A. & Moura, A.E. & Dromby, M. & Barría, C. (2023): New record of Hexanchus griseus in the northwestern Mediterranean Sea with insights into its biology and feeding ecology predator or scavenger? Mediterranean Marine Science, 24(1), 109–116 https://dx.doi.org/10.12681/mms.29940       
Santander, J. & Rincon, G. & Juca-Queiroz, B. & da Cruz, V.P. & Lessa, R. (2023): Distribution and New Records of the Bluntnose Sixgill Shark, Hexanchus griseus (Hexanchiformes: Hexanchidae), from the Tropical Southwestern Atlantic. Animals, 13(1), Article 91 https://dx.doi.org/10.3390/ani13010091       
Siders, Z.A. & Caltabellotta, F.P. & Loesser, K.B. & Trotta, L.B. & Baiser, B. (2023): Using pictographs as traits to explore morphological diversity in sharks. Ecology and Evolution, 13(1), Article e9761 https://dx.doi.org/10.1002/ece3.9761       
Silva, K.C.R.S. & Oddone, M.C. & Mollen, F.H. (2022): Estudo morfológico dentário do tubarão noturno Carcharhinus signatus (Chondrichthyes: Carcharhinidae) [Abstract]. Federal University of Rio Grande - FURG, 21st University Production Exhibition - MPU, Rio Grande/RS, Brazil, October 19 to 21, 2022         
Soares, K.D.A. & Zanini, F. (2023): Redescription and anatomical investigation of Schroederichthys maculatus Springer, 1966 and S. saurisqualus Soto, 2001 with comments on their systematics (Chondrichthyes: Carcharhiniformes: Atelomycteridae). Zoologischer Anzeiger, 302, 224–238 https://dx.doi.org/10.1016/j.jcz.2022.12.003       
Staggl, M.A. & Ruthensteiner, B. & Straube, N. (2023): Head anatomy of a lantern shark wet-collection specimen (Chondrichthyes: Etmopteridae). Journal of Anatomy, in press         
Sukumaran, S. & Sebastian, W. & Zacharia, P.U. & Kizhakudan, S.J. & Akhilesh, K.V. & Thomas, S. & Roul, S.K. & Muktha, M. & Sen, S.P. & Purushottama, G.B. & Rahangdale, S. & Bineesh, K.K. & Kishor, T.G. & Gopalakrishnan, A. (2023): Population genetic research on the Spadenose shark, Scoliodon laticaudus (Chondrichthyes, Carcharhinidae), reveals the presence of two significantly differentiated clades along the Indian coast. Marine Biodiversity, 53(1), Article 16 https://dx.doi.org/10.1007/s12526-022-01324-x       
Viana, S. & Soares, K.D.A. (2023): Untangling the systematic dilemma behind the roughskin spurdog Cirrhigaleus asper (Merrett, 1973) (Chondrichthyes: Squaliformes), with phylogeny of Squalidae and a key to Cirrhigaleus species. PLoS ONE, 18(3), Article e0282597 https://dx.doi.org/10.1371/journal.pone.0282597       
Wallace, E.M. & O'Shea, O.R. (2023): Population genetic connectivity of an endangered stingray from The Bahamas. Hydrobiologia, 850(2), 441–454 https://dx.doi.org/10.1007/s10750-022-05087-1       
Wang, J.Q. & Gao, C.X. & Wu, F. & Dai, L.B. & Ma, Q.Y. & Tian, S.Q. (2023): Environmental Characteristics Associated with the Presence of the Pelagic Stingray (Pteroplatytrygon violacea) in the Pacific High Sea. Fishes, 8(1), Article 46 https://dx.doi.org/10.3390/fishes8010046       
Wosnick, N. & Leite, R.D. & Balanin, S. & Chaves, A.P. & Gastal, E.R.D. & Hauser-Davis, R.A. & Giareta, E.P. (2023): Behavioral and visual stress-induced proxies in elasmobranchs. Reviews in Fish Biology and Fisheries, in press https://dx.doi.org/10.1007/s11160-023-09757-8       
Wu, Y. & Fu, Y.K. & Pan, H.F. & Chang, C. & Ao, N.J. & Xu, H. & Zhang, Z.N. & Hu, P. & Li, R.W. & Duan, S.X. & Li, Y.Y. (2023): Preparation and evaluation of stingray skin collagen/oyster osteoinductive composite scaffolds. Journal of Biomaterials Science–Polymer Edition, in press https://dx.doi.org/10.1080/09205063.2023.2166338       
Zhang, L.Y. & Liu, S.G. & Cai, Z.Z. & Xiang, J.L. & Song, P.Q. & Zhang, Y.P. & Li, Y. & Lin, L.S. (2023): Genetic diversity monitoring of Chiloscyllium plagiosum from coastal Xiamen between generations. Regional Studies in Marine Science, 58, Article 102776  https://dx.doi.org/10.1016/j.rsma.2022.102776       

Extinct Chondrichthyes:
Asan, A. & Salame, I. & Strougo, A. (2022): Sharks and rays from the Mokattamian Stage (middle and late Eocene) of Egypt, including some species from the middle Eocene Midra Shale of Qatar. Egyptian Journal of Geology, 66(1), 105–153 https://dx.doi.org/10.21608/EGJG.2022.173845.1028
Begat, A. & Kriwet, J. & Gelfo, J.N. & Cavalli, S.G. & Schultz, J.A. & Martin, T. (2023): The first southern hemisphere occurrence of the extinct Cretaceous sclerorhynchoid sawfish Ptychotrygon (Chondrichthyes, Batoidea), with a review of Ptychotrygon taxonomy. Journal of Vertebrate Paleontology, in press https://dx.doi.org/10.1080/02724634.2022.2162411
Dankina, D. & Spiridonov, A. & Raczyński, P. & Radzevičius, S. & Antczak, M. (2023): The first Late Permian fish fossils from Leszczyna quarry in South-West Poland. Earth and Environmental Science Transactions of the Royal Society of Edinburgh, in press https://dx.doi.org/10.1017/S1755691023000051
Feichtinger, I. & Guinot, G. & Pollerspöck, J. & Auer, G. & Ćorić, S. & Kranner, M. & Harzhauser, M. (2023): The role of habitability and changing environmental parameters as trigger for a faunal turnover of sharks at the Cretaceous-Palaeogene boundary [Abstract]. 3nd Virtual Conference for Women Archaeologists and Paleontologists, 40
Greif, M. & Ferron, H.G. & Klug, C. (2022): A new Meckel’s cartilage from the Devonian Hangenberg black shale in Morocco and its position in chondrichthyan jaw morphospace. Peerj, 10, Article e14418 https://dx.doi.org/10.7717/peerj.14418
Guinot, G. & Condamine, F.L. (2023): Global impact and selectivity of the Cretaceous-Paleogene mass extinction among sharks, skates, and rays. Science, 379, 802–806   https://dx.doi.org/10.1126/science.abn2080
Jambura, P.L. & Villalobos-Segura, E. & Türtscher, J. & Begat, A. & Staggl, M.A. & Stumpf, S. & Kindlimann, R. & Klug, S. & Lacombat, F. & Pohl, B. & Maisey, J.G. & Naylor, G.J.P. & Kriwet, J. (2023): Systematics and Phylogenetic Interrelationships of the Enigmatic Late Jurassic Shark Protospinax annectans Woodward, 1918 with Comments on the Shark–Ray Sister Group Relationship. Diversity, 15, Article 311 https://dx.doi.org/10.3390/d15030311  
Krak, A.M. & Shimada, K. (2023): The dentition of the extinct megamouth shark, Megachasma applegatei (Lamniformes: Megachasmidae), from southern California, USA, based on geometric morphometrics. PaleoBios, 40(1), Article P940160139 https://dx.doi.org/10.5070/P940160139  
Lebedev, O. & Itano, W. & Johanson, Z. & Alekseev, A. & Smith, M. & Ivanov, A. & Novikov, I. (2023): Tooth whorl structure, growth and function in a helicoprionid chondrichthyan Karpinskiprion (nom. nov.) (Eugeneodontiformes) with a revision of the family composition. Earth and Environmental Science Transactions of The Royal Society of Edinburgh, in press https://dx.doi.org/10.1017/S1755691022000251  
Manzanares, E. & Crespo, V.D. (2023): First reelaborated Cretaceous batoid of the Early Miocene from Spain. Palaeobiodiversity and Palaeoenvironments, in press https://dx.doi.org/10.1007/s12549-022-00564-w  
Medeiros, S. & Oddone, M.C. & Francischini, H. & Diniz, D. & Dentzien-Dias, P. (2023): Quaternary fossil shark (Neoselachii: Galeomorphii and Squalomorphii) diversity from southern Brazil. Journal of South American Earth Sciences, 122, Article 104176 https://dx.doi.org/10.1016/j.jsames.2022.104176
Otero, R.A. & Rubilar-Rogers, D. & Soto-Acuna, S. & Vargas, A. & Rojas, G.M. & Ugalde, R. & Rojas, O. & Rojas, J. & Novas, F.E. (2023): New records of continental vertebrates from the Triassic of the Atacama Desert, northern Chile. Journal of South American Earth Sciences, 121, Article 104155 https://dx.doi.org/10.1016/j.jsames.2022.104155  
Penn, S.J. & Sweetman, S.C. (2023): Microvertebrate-rich gutter casts from the basal Wessex Formation (Wealden Group, Lower Cretaceous) of Dungy Head, Dorset: Insights into the palaeoecology and palaeoenvironment of a non-marine wetland. Cretaceous Research, 143, Article 105397 https://dx.doi.org/10.1016/j.cretres.2022.105397  
Surapaneni, V.A. & Wölfer, J. & Schindler, M. & de Faria, L.C. & Mollen, F.H. & Amini, S. & Hanna, S. & Dean, M. (2022): Ecomorphology of multifunctional wrinkles across terrestrial and aquatic organisms - a source of inspiration for functionalized biomimetic surfaces [Abstract]. SEB Annual Conference 2022, Le Corum Conference Center, Montpellier, France from 5 to 8 July 2022
Villalobos-Segura, E. & Stumpf, S. & Türtscher, J. & Jambura, P.L. & Begat, A. & López-Romero, F.A. & Fischer, J. & Kriwet, J. (2023): A Synoptic Review of the Cartilaginous Fishes (Chondrichthyes: Holocephali, Elasmobranchii) from the Upper Jurassic Konservat-Lagerstätten of Southern Germany: Taxonomy, Diversity, and Faunal Relationships. Diversity, 15, Article 386 https://dx.doi.org/10.3390/d15030386       
Zoboli, D. & Messina, M.Y. (2022): The Mesozoic vertebrate fossil record of Sardinia (Italy): state of the art and new data. Bollettino Della Societa Paleontologica Italiana, 61(3), 289–296  https://dx.doi.org/10.4435/bspi.2022.17

Mucientes, G. & Vilas-Arrondo, N. & Secci-Petretto, G. & Vázquez, U. & Pin, X. & López, A. & Castro, L.F.C. & Froufe, E.  (2023): First Confirmed Record of the Smalltooth Sand Tiger, Odontapis Ferox, in Galicia (NW Spain). Thalassas, in press https://dx.doi.org/10.1007/s41208-023-00526-9
Orrell, D.L. & Questel, J.M. & Smoot, C.A. & Simpson, T. & Hussey, N.E. (2023): Alebion carchariae (Copepod: Caligidae) host plasticity and distribution: a new host and locality record from Ascension Island. Journal of the Marine Biological Association of the United Kingdom, 103, Article e3 https://dx.doi.org/10.1017/s0025315422001060


Beyond Jaws

New episode of the podcast Beyond Jaws!

Shark Research in Chile with Dr. Francisco Concha (Pancho)
Dr. Francisico J. Concha (aka Pancho) joins Dr. David Ebert and Andrew Lewin on the podcast to discuss his work on sharks in his home country of Chile. Pancho shares stories of trailblazing shark science in Chile and building a shark science program...


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Jurassic shark: Shark from the Jurassic period was already highly evolved

New phylogenetic tree provides new insights into the evolutionary history of sharks and rays

Date: February 28, 2023
Source: University of Vienna
Summary: Cartilaginous fish have changed much more in the course of their evolutionary history than previously believed. Evidence for this thesis has been provided by new fossils of a ray-like shark, Protospinax annectans, which demonstrate that sharks were already highly evolved in the Late Jurassic.


Shark bites tied for 10-year low in 2022 but spiked in regional hotspots

Date: February 6, 2023
Source: Florida Museum of Natural History
Summary: The number of unprovoked shark attacks worldwide decreased last year, tying with 2020 for the fewest number of reported incidents in the last 10 years. There were a total of 57 unprovoked bites in 2022, most of which occurred in the United States and Australia. Of these, five attacks were fatal, down from nine deaths in 2021 and 10 the year prior.


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