NEWSLETTER 04/2021 12.03.2021
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Pollerspöck, J. & Straube, N. 2021, Bibliography database of living/fossil sharks, rays and chimaeras (Chondrichthyes: Elasmobranchii, Holocephali), www.shark-references.com, World Wide Web electronic publication, Version 2021 |
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NEWS/ OWN RESEARCH
new publication by team shark-references:
- OPEN ACCESS -
  A three‐ton shipment of dry shark fins was examined by German customs in 2017 leading to the confiscation of 405 kg of potential CITES species. We analyzed a subsample of this material (115 specimens) using DNA sequence‐based identification and compared results to morphological screening of CITES species. We found a mixture of CITES regulated (4 of 11 species) and unregulated shark species. Our results demonstrate the difficulties of identifying CITES species morphologically in large fin shipments of mixed species composition. Correct identification of CITES species based on morphology alone may be hindered by missing characters or those altered by drying. We therefore suggest random molecular screening as a uniform approach for German customs authorities to check species composition and identify CITES regulated species in transit shipments. 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, in press free download via research gate or website! ------------------------------ ------------------------------ ------------------------------ ------------------------------ ------------------------------ - 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 ( https://www.facebook.com/sharkreferences) and in our monthly newsletter (sign up here: https://eepurl.com/sJNGb). 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. |
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NEW PARTNERS OF SHARK-REFERENCES
Would you like to become a shark-reference partner? Please contact us per E-mail!
Partner in Google-Maps:
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New Images
Many thanks to the following people for providing images:
Frederik Mollen (Elasmobranch Research Belgium) for the images of Carcharhinus plumbeus (NARDO, 1827)
Dr. Simon Weigmann, Elasmobranch Research Laboratory, Hamburg, Germany for a image of the new described Notoraja hesperindica WEIGMANN, SÉRET & STEHMANN, 2021
Samuel P. Iglésias for a images of Chimaera compacta IGLÉSIAS, KEMPER & NAYLOR, 2021
Patrick Jambura for a image of the holotype of Pseudocorax kindlimanni JAMBURA, STUMPF & KRIWET, 2021
Romain Vullo for images of Aquilolamna milarcae VULLO, FREY, IFRIM, GONZÁLEZ, STINNESBECK & STINNESBECK, 2021
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Missing papers:
Many thanks to all friends of shark-references, who sent us some missing papers last month!
Shark-References would kindly like to ask you for your contribution to this project.
At the moment we are looking for some of the following papers:
Extinct Chondrichthyes:
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
BOYD, B.M. (2016) Fossil sharks and rays of Gainesville creeks; Alachua County, Florida: Hogtown group; (middle Miocene to lower Pliocene). Florida Paleontological Society, Special Publication
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.
CADENAT, J. (1951) Initiations Africaines. III. Poissons de Mer du Sénégal. Institute Francais d'Afrique Noire. Initiations Africaines. III. Poissons de Mer du Sénégal.: 1–345
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.
SICCARDI, E. (1961) Cetorhinus en el Atlantico sur (Elasmobranchii: Cetorhinidae). Actas y trabajos del Primer Congreso Sudamericano de Zoologia, 4 (5): 251–263
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 www.shark-references.com and send missing papers (not listed papers or papers without the info-symbol) to juergen.pollerspoeck@shark-references.com or nicolas.straube@shark-references.com
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Upcoming Meetings:
EEA Meeting 2021 in Leiden, Netherlands
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: https://www.elasmobranch.nl/eea2021/
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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.
June 21 - 25, 2021
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Puebla, México, 19 - 23/04/2021
The Sociedad Mexicana de Peces Cartilaginosos, A. C. (SOMEPEC), is a non-profit organization that organizes the IX National Symposium of Sharks and Rays, and II Latin American Congress Sharks, Rays and Chimeras.
La Sociedad Mexicana de Peces Cartilaginosos, A. C. (SOMEPEC), es una organización sin fines de lucro, que busca promover el estudio científico de los tiburones y rayas, así como uso racional. Fiel a su objetivo de crear espacios para el intercambio de experiencias y avances de las diferentes líneas de investigación sobre tiburones y rayas, que se desarrollan en México y el resto del mundo, organiza el IX Simposium Nacional de Tiburones y Rayas, y II Congreso Latinoamericano de Tiburones, Rayas y Quimeras.
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TAXONOMIC NEWS/ NEW SPECIES
Extant Chondrichthyes:
WEIGMANN, S. & SÉRET, B. & STEHMANN, M.F.W. (2021): Notoraja hesperindica sp. nov., a new colorful deep-sea softnose skate (Elasmobranchii, Rajiformes, Arhynchobatidae) and first generic record from the western Indian Ocean. Marine Biodiversity, 51: 35
New species: Notoraja hesperindica
Abstract: A new deep-sea softnose skate, Notoraja hesperindica, is described based on six specimens caught in 1230–1600 m depths off southern Mozambique and northwestern Madagascar in the western Indian Ocean. The new species is a medium-sized species of Notoraja Ishiyama, 1958 reaching a total length of at least 539 mm. It is the only Notoraja species known from the western Indian Ocean and differs from most congeners in the intense dark blue-grayish coloration. The only congeners with similarly vibrant coloration are Notoraja azurea McEachran & Last, 2008 from off southern Australia and Notoraja sapphira Séret & Last, 2009 from the Norfolk Ridge (Coral Sea and Tasman Sea), which differ from the new species in a shorter and more obtusely angled snout, a shorter head, a shorter disc, and smaller dorsolateral tail thorns, as well as more predorsal tail and total predorsal vertebrae and more pectoral-fin radials. The large dorsolateral tail thorns also distinguish the new species from most congeners except for the eastern Pacific Notoraja martinezi Concha, Ebert & Long, 2016, which has even larger, randomly patterned dorsolateral tail thorns that give the tail a barbedwire-like appearance. This congener further differs from N. hesperindica sp. nov. in the absence (vs. presence) of malar thornlets, fewer median tail thorns, a shorter snout, more tooth rows in upper and lower jaws, and more pectoral radials. A key to the species of Notoraja in the Indian Ocean is provided.
IGLÉSIAS, S.P. & KEMPER, J.M. & NAYLOR, G.J.P. (2021): Chimaera compacta, a new species from southern Indian Ocean, and an estimate of phylogenetic relationships within the genus Chimaera (Chondrichthyes: Chimaeridae). Ichthyological Research, in press
New species: Chimaera compacta
Abstract: Chimaera compacta sp. nov., a new species of shortnose chimaera (Holocephali: Chimaeriformes: Chimaeridae), is described from a single specimen collected at 595–655 m depth, off Amsterdam Island, in the southern Indian Ocean. The species is easily distinguished from its congeners by the combination of the following characters: massive head with short snout; stocky and relatively long trunk 44% BDL, short tail with second dorsal fin base 72% BDL; long pelvic fin anterior margin 26% BDL. Caudal fin dorsal origin slightly posterior to caudal fin ventral origin. Firm, non-deciduous skin; brown color with yellow blotches. Chimaera compacta sp. nov. is morphologically close to Chimaera lignaria Didier 2002 from New Zealand and Chimaera willwatchi Clerkin, Ebert and Kemper 2017 from south western Indian Ocean. The new species can be distinguished from other Chimaera species based on DNA sequences divergence of the COI and NADH2 genes. This species has a nucleotide sequence divergence (uncorrected p distances) for the studied genes of 4.2 and 4.1%, respectively, with its closest relatives. Phylogenetically, Chimaera compacta sp. nov. is nested within a well-supported group including Chimaera carophila Kemper, Ebert, Naylor and Didier 2014, Chimaera didierae Clerkin, Ebert and Kemper 2017, C. lignaria, Chimaera macrospina Didier, Last and White 2008, Chimaera notafricana Kemper, Ebert, Compagno and Didier 2010, Chimaera opalescens Luchetti, Iglésias and Sellos 2011, and C. willwatchi. It is the first Chimaeridae described for the Territory of the French Southern and Antarctic Lands.
Extinct Chondrichthyes:
VULLO, R. & FREY, E. & IFRIM, C. & GONZÁLEZ, M.A. & STINNESBECK, E.S. & STINNESBECK, W. (2021): Manta-like planktivorous sharks in Late Cretaceous oceans. Science, 371 (6535): 1253-1256
New genus: Aquilolamna
New species: Aquilolamna milarcae
Abstract: The ecomorphological diversity of extinct elasmobranchs is incompletely known. Here, we describe Aquilolamna milarcae, a bizarre probable planktivorous shark from early Late Cretaceous open marine deposits in Mexico. Aquilolamna, tentatively assigned to Lamniformes, is characterized by hypertrophied, slender pectoral fins. This previously unknown body plan represents an unexpected evolutionary experimentation with underwater flight among sharks, more than 30 million years before the rise of manta and devil rays (Mobulidae), and shows that winglike pectoral fins have evolved independently in two distantly related clades of filter-feeding elasmobranchs. This newly described group of highly specialized long-winged sharks (Aquilolamnidae) displays an aquilopelagic-like ecomorphotype and may have occupied, in late Mesozoic seas, the ecological niche filled by mobulids and other batoids after the Cretaceous–Paleogene boundary.
JAMBURA, P.L. & STUMPF, S. & KRIWET, J. (2021): Skeletal remains of the oldest known pseudocoracid shark Pseudocorax kindlimanni sp. nov. (Chondrichthyes, Lamniformes) from the Late Cretaceous of Lebanon. Cretaceous Research, in press
New species: Pseudocorax kindlimanni
Abstract: A new fossil mackerel shark, Pseudocorax kindlimanni sp. nov. (Lamniformes, Pseudocoracidae), is described from the Cenomanian Konservat-Lagerstätte of Haqel, Lebanon. The new species is based on the most complete fossil of this group to date, which comprises an associated tooth set of 70 teeth, six articulated vertebral centra, numerous placoid scales and pieces of unidentifiable mineralized cartilage. The dentition of P. kindlimanni sp. nov. is marked by a high degree of monognathic heterodonty but does not exhibit the characteristic “lamnoid tooth pattern” known from other macrophagous lamniform sharks. In addition, P. kindlimanni sp. nov. shows differences in tooth microstructure and vertebral centrum morphology compared to other lamniform sharks. These variations, however, are also known from other members of this order and do not warrant the assignment of Pseudocorax outside the lamniform sharks. The new fossil is the oldest known pseudocoracid shark and pushes the origin of this group back into the Cenomanian, a time when lamniform sharks underwent a major diversification. This radiation resulted not only in high species diversity, but also in the development of a diverse array of morphological traits and adaptation to different ecological niches. Pseudocorax kindlimanni sp. nov. was a small, active predator capable of fast swimming, and it occupied the lower trophic levels of the marine food web in the Late Cretaceous.
Parasites:
CAIRA, J.N. & OTTO, K. & FERNANDO, D. & JENSEN, K. (2021): Three new species of 'tetraphyllidean' cestodes from an undescribed bamboo shark (Orectolobiformes: Hemiscylliidae) in Sri Lanka. Folia Parasitologica, 68: 004
New species: Carpobothrium marjorieae, Spiniloculus akshayi, Yorkeria sachiniae
Abstract: Examination of seven specimens of an undescribed species of bamboo shark (Orectolobiformes: Hemiscylliidae), currently referred to as Chiloscyllium sp. 1, from Sri Lanka yielded three new species of 'tetraphyllidean' cestodes, one each in the genera Carpobothrium Shipley et Hornell, 1906, Spiniloculus Southwell, 1925, and Yorkeria Southwell, 1927. Carpobothrium marjorieae Caira, Otto et Jensen sp. n. differs from its three valid congeners in total length, number of testes, and size of the apical sucker of its anterior bothridial flap. Like Carpobothrium eleanorae Koontz et Caira, 2016 it possesses spherical eggs with highly elongate bipolar filaments, but its eggs are conspicuously larger than those of the latter species. Spiniloculus akshayi Caira, Otto et Jensen sp. n. can be distinguished from its five congeners in total length and number of proglottids. Yorkeria sachiniae Caira, Otto et Jensen sp. n. differs from its 16 congeners in number of proglottids and testes, total length, terminal proglottid, cirrus sac, and cephalic peduncle length, hook size, genital pore position, and bothridial shape. The eggs of Y. sachiniae Caira, Otto et Jensen sp. n. are spindle-shaped and bear a single long, polar filament. All three species were found to exhibit microthrix patterns on their scolices like those of the majority of their congeners that have been examined to date with scanning electron microscopy. Microtriches on the distal surfaces of the bothridial pouches of a species of Carpobothrium were characterised for the first time; C. marjorieae Caira, Otto et Jensen sp. n. was found to possess a modified form of gladiate spinithrix on this surface. Among the seven members of the genus, this is the first species of Chiloscyllium Müller et Henle that has been found to host representatives of all three of these 'tetraphyllidean' genera. However, unlike most of its congeners, a representative of the non-hooked genus Scyphophyllidium Woodland, 1927 was not found infecting Chiloscyllium sp. 1.
OOSTHUIZEN, G. & ACOSTA, A.A. & SMIT, N.J. & SCHAEFFNER, B.C. (2021): A new species of Grillotia Guiart, 1927 (Cestoda: Trypanorhyncha) from the spotted skate, Raja straeleni Poll, in South Africa. Parasitology International, 82: 102307
New species: Grillotia sasciae
Abstract: A new species of Grillotia Guiart, 1927 was recovered from the spotted skate (Raja straeleni Poll) from the south coast of the Western Cape, South Africa. Grillotia sasciae n. sp. is described based on morphological and molecular data. This species most closely resembles species in the subgenus Grillotia (viz., Grillotia borealis Keeney and Campbell, 2001, Grillotia brayi Beveridge and Campbell, 2007, Grillotia dollfusi Carvajal, 1971, Grillotia erinaceus Dollfus, 1969, Grillotia musculara Hart, 1936 and Grillotia patagonica Menoret and Ivanov, 2012) in having four hooks per principal row and intercalary hook rows in the metabasal region of the tentacular armature, a band of hooks on the external tentacular surface, numerous proglottids, and the presence of an uterine pore, a hermaphroditic sac, and internal and external seminal vesicles. The molecular phylogenetic analysis of the partial 28S rDNA gene, confirms the morphological data as it also groups Grillotia sasciae n. sp. within the G. erinaceus species complex. Grillotia sasciae n. sp. is distinctive among all other valid species in the complex by having two enlarged, uncinate hooks in the basal armature, of a different shape and size from the remaining hooks 1(1′) in the metabasal armature. In addition, the retractor muscle of Grillotia sasciae n. sp. attaches at the posterior region of the tentacular bulb rather than the middle portion, continuing posteriorly as seen in most congeners (viz., G. erinaceus, G. borealis, G. brayi, G. musculara and G. pantagonica). The new species is the seventh species within the subgenus Grillotia and the first record of a species of Grillotia from southern African waters.
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Latest Research Articles
Extant Chondrichthyes:
AROSTEGUI, M.C. & GAUBE, P. & BERUMEN, M.L. & DIGIULIAN, A. & JONES, B.H. & ROSTAD, A. & BRAUN, C.D. (2020) Vertical movements of a pelagic thresher shark (Alopias pelagicus): insights into the species' physiological limitations and trophic ecology in the Red Sea. Endangered Species Research, 43: 387-394 https://dx.doi.org/10.3354/esr01079
BARICHE, M. & FRICKE, R. (2020) The marine ichthyofauna of Lebanon: an annotated checklist, history, biogeography, and conservation status. Zootaxa, 4775 (1): 1–157 https://dx.doi.org/10.11646/zootaxa.4775.1.1
BHAGYALEKSHMI, V. & KUMAR, A.B. (2021) Bycatch of non-commercial batoids in the trawl fishery of south India: Status and conservation prerequisites. Regional Studies in Marine Science, 44: 101738 https://dx.doi.org/10.1016/j.rsma.2021.101738
BITON-PORSMOGUER, S. (2020) Fisheries and ecology of the skates (Rajiformes: Rajidae) in the English Channel. Vie et Milieu, 70 (2): 133-140
BOGORODSKY, S.V. & ZAJONZ, U. & SAEED, F.N. & WEIGMANN, S. (2021) Notes on batoid fishes of the Socotra Archipelago (north-western Indian Ocean), with four new records. Zootaxa, 4951 (3): 511–528 https://dx.doi.org/10.11646/zootaxa.4951.3.5
BRACCINI, M. & KANGAS, M. & JAITEH, V. & NEWMAN, S. (2021) Quantifying the unreported and unaccounted domestic and foreign commercial catch of sharks and rays in Western Australia. Ambio, in press https://dx.doi.org/10.1007/s13280-020-01495-6
BUENO-PARDO, J. & NOBRE, D. & MONTEIRO, J.N. & SOUSA, P.M. & COSTA, E.F.S. & BAPTISTA, V. & OVELHEIRO, A. & VIEIRA, VMNCS, CHICHARO, L. & GASPAR, M. & ERZINI, K. & KAY, S. & QUEIROGA, H. & TEODOSIO, M.A. & LEITAO, F. (2021) Climate change vulnerability assessment of the main marine commercial fish and invertebrates of Portugal. Scientific Reports, 11 (1): 2958 https://dx.doi.org/10.1038/s41598-021-82595-5
BURKE, P.J. & WILLIAMSON, J.E. (2021) Using cone beam CT scans to reveal headfirst ingestion and possible prey manipulation tactics in sawsharks. Journal of Fish Biology, in press https://dx.doi.org/10.1111/jfb.14692
CARRILLO-COLÍN, L.D. & MÁRQUEZ-FARÍAS, J.F. & LARA-MENDOZA, R.E. & ZAMORA-GARCÍA, O.G. (2021) Bayesian estimation of the age and growth of the golden cownose ray (Rhinoptera steindachneri) in the southern Gulf of California in Mexico. Fishery Bulletin, 119 (1): 10-20 https://dx.doi.org/10.7755/FB.119.1.3
CARTER, A.M. & SOMA, H. (2021) Reconciling allometry with physiology: Response to comment on "Viviparity in the longest living vertebrate, the Greenland shark (Somniosus microcephalus)". Placenta, 103: 244-245 https://dx.doi.org/10.1016/j.placenta.2020.11.014
CASTELBLANCO-MARTINEZ, D.N. & RAMOS, E.A. & KISZKA, J.J. & BLANCO-PARRA, M.P. & PADILLA-SALDIVAR, J.A. & GARCIA, J. & NINO-TORRES, C.A. (2021) Spatial patterns of shark-inflicted injuries on coastal bottlenose dolphins in the Mesoamerican Reef System. Studies on Neotropical Fauna and Environment, in press https://dx.doi.org/10.1080/01650521.2021.1877391
COTTRANT, E. & MATICH, P. & FISHER, M.R. (2021) Boosted regression tree models predict the diets of juvenile bull sharks in a subtropical estuary. Marine Ecology Progress Series, 659: 127-141 https://dx.doi.org/10.3354/meps13568
CREAR, D.P. & LATOUR, R.J. & FRIEDRICHS, M.A.M. & ST-LAURENT, P. & WENG, K.C. (2020) Sensitivity of a shark nursery habitat to a changing climate. Marine Ecology Progress Series, 652: 123-136 https://dx.doi.org/10.3354/meps13483
DE LIMA VILIOD, M.C. & RANGEL, B.S. & ROCHA, L.C. & SANTOS DOMINGOS, J.F. & MALAVASI‐BRUNO, C.E. & AMORIM, A.F. & WATANABE, I.-S. & CIENA, A.P. (2021) Ecomorphological, space, and mineral relations of dermal denticles in angular angel shark (Squatina guggenheim). Microscopy Research and Technique, in press https://dx.doi.org/10.1002/jemt.23757
DEGROOT, B.C. & ROSKAR, G. & BREWSTER, L. & AJEMIAN, M.J. (2020) Fine-scale movement and habitat use of whitespotted eagle rays Aetobatus narinari in the Indian River Lagoon, Florida, USA. Endangered Species Research, 42: 109-124 https://dx.doi.org/10.3354/esr01047
DESBIENS, A.A. & ROFF, G. & ROBBINS, W.D. & TAYLOR, B.M. & CASTRO-SANGUINO, C. & DEMPSEY, A. & MUMBY, P.J. (2021) Revisiting the paradigm of shark-driven trophic cascades in coral reef ecosystems. Ecology, in press https://dx.doi.org/10.1002/ecy.3303
DINGEMANSE, N.J. (2021) Personality and pace-of-life: Ecological lessons learnt from free-ranging lemon sharks. Journal of Animal Ecology, 90 (2): 314-316 https://dx.doi.org/10.1111/1365-2656.13401
DIOGO, GS. & CARNEIRO, F. & FREITAS-RIBEIRO, S. & SOTELO, C.G. & PÉREZ-MARTÍN, R.I. & PIRRACO, R.P. & REIS, R.L. & SILVA, T.H. (2121) Prionace glauca skin collagen bioengineered constructs as a promising approach to trigger cartilage regeneration. Materials Science and Engineering: C, 120: 111587 https://dx.doi.org/10.1016/j.msec.2020.111587
EBERT, D.A. & WINTNER, S.P. & KYNE, P.M. (2021) An annotated checklist of the chondrichthyans of South Africa. Zootaxa 4947 (1): 1–127 https://dx.doi.org/10.11646/zootaxa.4947.1.1
ESTUPIÑÁN-MONTAÑO, C. & CARRERA-FERNÁNDEZ, M. & GALVÁN-MAGAÑA, F. (2021) Reproductive biology of the scalloped hammerhead (Sphyrna lewini) in the central-eastern Pacific Ocean. Journal of the Marine Biological Association of the United Kingdom, in press https://dx.doi.org/10.1017/S0025315421000138
ESTUPIÑÁN-MONTAÑO, C. & GALVÁN-MAGAÑA, F. & ELORRIAGA-VERPLANCKEN, F. & ZETINA-REJÓN, M.J. & SÁNCHEZ-GONZÁLEZ, A. & POLO-SILVA, C.J. & VILLALOBOS-RAMÍREZ, D.J. & ROJAS-CUNDUMÍ, J. & DELGADO-HUERTAS, A. (2021) Ontogenetic feeding ecology of the scalloped hammerhead shark Sphyrna lewini in the Colombian Eastern Tropical Pacific. Marine Ecology Progress Series, 663:127-143 https://dx.doi.org/10.3354/meps13639
FAHMI & OKTAVIYANI, S. & BENNETT, M.B. & DUDGEON, C.L. & TIBBETTS, I.R. (2021) Reproductive biology of a bamboo shark as a framework for better fisheries management. Marine and Freshwater Research, in press https://dx.doi.org/10.1071/mf20189
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STORO, R. & EASSON, C. & SHIVJI, M. & LOPEZ, J.V. (2021) Microbiome Analyses Demonstrate Specific Communities Within Five Shark Species. Frontiers in Microbiology, 12: 605285 https://dx.doi.org/10.3389/fmicb.2021.605285
SWIMMER, Y. & ZOLLETT, E.A. & GUTIERREZ, A. (2020) Bycatch mitigation of protected and threatened species in tuna purse seine and longline fisheries. Endangered Species Research, 43: 517-542 https://dx.doi.org/10.3354/esr01069
SWINTEK, MA. & WALTER, R.P. (2021) Development and characterization of thirteen novel microsatellite markers for use in Greenland sharks (Somniosus microcephalus), with cross-amplification in Pacific sleeper sharks (Somniosus pacificus). BMC Research Notes, 14: 28 https://dx.doi.org/10.1186/s13104-021-05447-5
TAMAKI, A. & TAKEUCHI, S. & YANG, S. & SASSA, S. (2021) Long-term changes in a trochid gastropod population affected by biogenic sediment stability on an intertidal sandflat in regional metapopulation context. Marine Biology, 168 (3): 26 https://dx.doi.org/10.1007/s00227-021-03828-9
TANAKA, K.R. & VAN, HOUTAN, K.S. & MAILANDER, E. & DIAS, B.S. & GALGINAITIS, C. & O'SULLIVAN, J. & LOWE, C.G. & JORGENSEN, S.J. (2121) North Pacific warming shifts the juvenile range of a marine apex predator. Scientific Reports,11: 3373 https://dx.doi.org/10.1038/s41598-021-82424-9
TSIKLIRAS, A.C. & TOULOUMIS, K. & PARDALOU, A. & ADAMIDOU, A. & KERAMIDAS, I. & ORFANIDIS, G.A. & DIMARCHOPOULOU, D. & KOUTRAKIS, M. (2021) Status and Exploitation of 74 Un-Assessed Demersal Fish and Invertebrate Stocks in the Aegean Sea (Greece) Using Abundance and Resilience. Frontiers in Marine Science, 7: 578601 https://dx.doi.org/10.3389/fmars.2020.578601
VEDOR, M. & QUEIROZ, N. & MUCIENTES, G. & COUTO, A. & DA COSTA, I. & DOS SANTOS, A. & VANDEPERRE, F. & FONTES, J. & AFONSO, P. & ROSA, R. & HUMPHRIES, N.E. & SIMS, D.W. (2021) Climate-driven deoxygenation elevates fishing vulnerability for the ocean's widest ranging shark. Elife, 10: e62508 https://dx.doi.org/10.77554/eLife.62508
VELÁZQUEZ-CHIQUITO, V.M. & MÉNDEZ-MACÍAS, J.S. & ESTUPIÑÁN-MONTAÑO, C. & GALVÁN-MAGAÑA, F. (2021) Dietary ecology and trophic level of adults of the Chilean angel shark Squatina armata Philippi 1887 in the Central-Eastern Pacific Ocean. Regional Studies in Marine Science, 43: 101675 https://dx.doi.org/10.1016/j.rsma.2021.101675
WEIGMANN, S. & SÉRET, B. & STEHMANN, M.F.W. (2021) Notoraja hesperindica sp. nov., a new colorful deep-sea softnose skate (Elasmobranchii, Rajiformes, Arhynchobatidae) and first generic record from the western Indian Ocean. Marine Biodiversity, 51: 35 https://dx.doi.org/10.1007/s12526-021-01162-3
WOMERSLEY, F. & HANCOCK, J. & PERRY, C.T. & ROWAT, D. (2121) Wound-healing capabilities of whale sharks (Rhincodon typus) and implications for conservation management. Conservation Physiology, 9 (1): coaa120 https://dx.doi.org/10.1093/conphys/coaa120
Extinct Chondrichthyes:
CORRAL, J.C. & BERRETEAGA, A. & POYATO-ARIZA, F.J. & BARDET, N. & CAPPETTA, H. & FLOQUET, M. & ASTIBIA, H. & BADIOLA, A. & PEREDA-SUBERBIOLA, X. (2021) Stratigraphy, age, and vertebrate palaeontology of the latest Cretaceous Quintanilla la Ojada locality (Basque-Cantabrian Region, northern Spain): a synthesis. Comptes Rendus Palevol, 20 (7): 91-117 https://dx.doi.org/10.5852/cr-palevol2021v20a7
FEICHTINGER, I. & FRITZ, I. & GÖHLICH, U.B. (2021) Tiger shark feeding on sirenian – first fossil evidence from the middle Miocene of the Styrian Basin (Austria). Historical Biology, in press https://dx.doi.org/10.1080/08912963.2021.1906665
GINTER, M. (2021) The biostratigraphy of Carboniferous chondrichthyans. In: Lucas, S. G., Schneider, J. W., Wang, X. and Nikolaeva, S. (eds) The Carboniferous Timescale.
Geological Society, London, Special Publications, 512: in press https://dx.doi.org/10.1144/SP512-2020-91
GOVENDER, R. (2021) Shark–seal interaction off South Africa’s west coast during the early Pliocene (5 Ma). South African Journal of Science, 117 (3/4): 8837 https://dx.doi.org/10.17159/sajs.2021/8837
JAMBURA, P.L. & STUMPF, S. & KRIWET, J. (2021) Skeletal remains of the oldest known pseudocoracid shark Pseudocorax kindlimanni sp. nov. (Chondrichthyes, Lamniformes) from the Late Cretaceous of Lebanon. Cretaceous Research, in press https://dx.doi.org/10.1016/j.cretres.2021.104842
LANDINI, W. & COLLARETA, A. & BIANUCCI, G. (2020) The origin of biogeographic segregation in the copper shark (Carcharhinus brachyurus): an integrative reconstruction based on neontological and paleontological data. Vie et Milieu, 70 (2): 117-132
MALYSHKINA, T.P. (2021) Striatolamia tchelkarnurensis Glickman (Elasmobranchii: Lamniformes), the youngest valid Striatolamia species. Paleontological Journal, 55 (2): 77-87 https://dx.doi.org/10.1134/S0031030121020088
TÜRTSCHER, J. & LÓPEZ-ROMERO, F.A. & JAMBURA, P.L. & KINDLIMANN, R. & WARD, D.J. & KRIWET, J. (2021) Evolution, diversity, and disparity of the tiger shark lineage Galeocerdo in deep time. Paleobiology, in press https://dx.doi.org/10.1017/pab.2021.6
VULLO, R. & FREY, E. & IFRIM, C. & GONZÁLEZ, M.A. & STINNESBECK, E.S. & STINNESBECK, W. (2021) Manta-like planktivorous sharks in Late Cretaceous oceans. Science, 371 (6535): 1253-1256 https://dx.doi.org/10.1126/science.abc1490
ZOUHRI, S. & GINGERICH, P. & KHALLOUFI, B. & BOURDON, E. & ADNET, S. & JOUVE, S. & ELBOUDALI, N. & AMANE, A. & RAGE, J.-C. & TABUCE, R. & LAPPARENT DE BROIN, F. (2021) Middle Eocene vertebrate fauna from the Aridal Formation, Sabkha of Gueran, southwestern Morocco. Geodiversitas, 43 (5): 121-150 https://dx.doi.org/10.5252/geodiversitas2021v43a5
Parasites:
CAIRA, J.N. & OTTO, K. & FERNANDO, D. & JENSEN, K. (2021) Three new species of 'tetraphyllidean' cestodes from an undescribed bamboo shark (Orectolobiformes: Hemiscylliidae) in Sri Lanka. Folia Parasitologica, 68: 004 https://dx.doi.org/10.14411/fp.2021.004
OOSTHUIZEN, G. & ACOSTA, A.A. & SMIT, N.J. & SCHAEFFNER, B.C. (2021) A new species of Grillotia Guiart, 1927 (Cestoda: Trypanorhyncha) from the spotted skate, Raja straeleni Poll, in South Africa. Parasitology International, 82: 102307 https://dx.doi.org/10.1016/j.parint.2021.102307
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MISCELLANEOUS:
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Discovery of a 'winged' shark in the Cretaceous seas
Date: March 18, 2021- Source: CNRS
- Summary: The fossil of an unusual shark specimen reminiscent of manta rays sheds light on morphological diversity in Cretaceous sharks. This plankton feeder was discovered in Mexico and analysed by an international team of palaeontologists.
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Enigmatic circling behavior captured in whales, sharks, penguins, and sea turtles
- Date: March 18, 2021
- Source: Cell Press
- Summary: Technological advances have made it possible for researchers to track the movements of large ocean-dwelling animals in three dimensions with remarkable precision in both time and space. Researchers reporting in the journal iScience on March 18 have now used this biologging technology to find that, for reasons the researchers don't yet understand, green sea turtles, sharks, penguins, and marine mammals all do something rather unusual: swimming in circles.
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These baby great white sharks love to hang out near New York
- Date: March 23, 2021
- Source: Florida Atlantic University
- Summary: A study offers the first fine-scale analysis of vertical movement of baby white sharks in the New York Bight. Their 3D movements along with oceanographic features like sea surface temperature show they traverse variable oceanographic features across the continental shelf in the New York Bight, but certainly have their habitat preferences. More than 90 percent were positioned within 20 kilometers of Long Island's southern shoreline, which further confirms the importance of this region to baby white sharks.
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Older than expected: Teeth reveal the origin of the tiger shark
24. März 2021
With a total length of up to 5.5m, the tiger shark is one of the largest predatory sharks known today. This shark is a cosmopolitan species occurring in all oceans worldwide. It is characterized by a striped pattern on its back, which is well marked in juveniles but usually fades in adults. An international team of researchers led by Julia Türtscher from the University of Vienna examined the fossil record of these apex predators and found out that modern tiger sharks are older than previously thought and that several tiger shark species existed in past compared to the single species living today. The results of this study are published in the journal "Paleobiology".
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Scientists show technology can save people from shark bites
The deployment of personal electronic deterrents is an effective way to prevent future deaths and injuries
- Date: March 30, 2021
- Source: Flinders University
- Summary: With shark bites increasing in countries like Australia - scientists say the use of personal electronic deterrents is an effective way to prevent future deaths and injuries which could save the lives of up to 1063 Australians along the coastline over the next 50 years.
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14.5 million-year-old shark-attack on manatee documents oldest predator-prey interaction
06. April 2021
Researcher of the NHM Vienna identified a fossilized skeleton of a manatee. The bones bear rare fossil bite marks and teeth of a tiger shark were also found next to the skeleton. What do these fossils tell us about life 14.5 million years ago?
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