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NEWSLETTER 09/2024 28.09.2024
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Please acknowledge use of the database www.shark-references.com in your publications, and cite:
Pollerspöck, J. & Straube, N. 2024, Bibliography database of living/fossil sharks, rays and chimaeras (Chondrichthyes: Elasmobranchii, Holocephali), www.shark-references.com, World Wide Web electronic publication, Version 2024 |
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Shark reference custom search tool and maintenance
Update!
We are currently in talks with a programmer. We will hope to be able to integrate the full-text search into our database by the end of the year.
Our sincere thanks to all donors!!!
Fins up,
Jürgen & Nico
Some changes in the web-page organisation: We added a new ‚TOOLS‘ menu item- all available tools will be available here from now, for example a guide how to download species specific literature lists. Please check it out! 
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Since we were asked several times, if we could help distributing chondrichthyan-related job opportunities, we would like to try this out as a new category in the newsletter besides postings on our Facebook page. This category definitely depends on the community sharing job openings, so please do not hesitate and send us vacancies or similar.
Right now, we have four interesting job openings. We will keep it simple and just crosslink: |
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Leonard Joseph Victor Compagno Obituary
sent by Dr.Primo Micarelli
It is with great sadness that I share the news of the passing away of distinguished marine scientist and beloved friend, Dr Leonard JV Compagno on 25 September 2024.
Dr. Compagno was an internationally recognised expert on sharks who contributed enormously to the knowledge of cartilaginous fishes world-wide. Originally born in California, he later made South Africa his home. He was foremost an international authority on shark taxonomy, and a world expert on systematics with special interest in morphology, evolution, paleontology, zoogeography, diversity, natural history, and conservation of sharklike fishes.
His prolific scientific achievements have been broadly recognized and have led to several prestigious awards starting early in his career with Harvard University and Stanford University scholarships for graduate work in 1965, followed by U.S. National Science Foundation postdoctoral award in 1972 and CSIR postdoctoral fellowship in 1983. He obtained his Ph.D. from Stanford University in 1979.
Other awards include the prestigious Robert H. Gibbs, Jr. Memorial Award for excellence in Systematic Ichthyology, and the prestigious Gilchrist Memorial Medal in recognition of his dedication and significant contribution to marine science in Southern Africa.
Not limited to, his taxonomic work was extremely extensive: he described new taxa of cartilaginous fishes which include six family-group taxa, 27 new species, one new genus and five new species of southern African sharks, rays and chimeras.
In 2016 he was yet again honoured for his achievements in shark research when he received the Galileo Award and was selected for membership in the Galileo Academy of Science & Technology Hall of Merit.
Dr. Compagno’s volume of publications is considered the most extensive in elasmobranch literature with over 600 items including abstracts, over 200 published research papers, popular articles, countless essays, reports, books and book chapters.
His major books include Sharks of the Order Carcharhiniformes; the 3volume FAO Catalog of World Sharks; the revised FAO Catalog of World Sharks, Guide to the Sharks and Rays of Southern Africa, and Sharks of the World, the first-ever field guide to sharks.
He held several distinguished positions including Professorship at Tiburon Center for Environmental Studies at San Francisco State University, and Research Associate at J.L.B. Smith Institute of Ichthyology. He was the Founder and Head of the Shark Research Centre and Curator of Fishes, Iziko, South African Museum from which he retired. He was also an Honorary Research Associate at the Department of Zoology, University of Cape Town, Fellow of the Royal Society of South Africa, Regional Vice-Chair position and membership of the Executive Board of the IUCN Shark Specialist Group, a research consultant for Fisheries Division of FAO of the United Nations, Director of the Shark Research Institute in the USA, Director of AfriOceans Conservation Alliance in South Africa, and Chief Scientist for Save Our Seas Foundation.
He was equally passionate about conservation and was responsible for the Great White shark becoming a fully protected species in South Africa in 1991. He also participated in the Red-Listing and CITES listing of various other cartilaginous fishes and provided scientific support to the successful listing of whale sharks and basking sharks on CITES Appendix II in 2002, as well as the listing of white sharks in 2004.
Steven Spielberg asked Compagno, then a graduate student at Stanford University, for help with building the Jaws model. With reference to the impact Jaws had on sharks he said: "Jaws was about a shark becoming a serial man-eater. But Jaws does not happen here - if it did we'd have a fatality every day!"
He has left a distinguished legacy of professional and academic achievements that will continue to influence marine science and inspire generations to come. But there was much more to him than being a scientist, he was also a great philosopher with an IQ off the charts. He loved debating and had an all-encompassing knowledge of every subject under the sun and was fondly referred to as a walking Wikipedia. He had this sharp ability to see through world agendas and created his own funny idioms. Those closest to him endearingly referred to him as Lenny The Tiger - after sharks, tigers were his second love.
With his uniqueness, idiosyncratic ways and at social engagements he made so many people laugh and feel great about themselves. He was a gifted sculptor, a talented artist and photographer, and a creative writer with a lateral imagination who wrote several science fiction books, countless short stories and essays, and he loved Italy, Star Trek and Avatar!
He was truly a one of a kind, a remarkable, special and extraordinary human being who possessed the kindest of hearts, the most generous of spirits, the most incredible brain, the most quick, clever and witty sense of humour, all of this the attributes of only the greatest of minds, a true genius. He was also my very best and dear friend for over two decades, starting with when he became a board member of AfriOceans the organisation I founded in 2003. I am blessed and privileged to have known him and loved him. He will be missed by all of us forever. Love you forever Lenny
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NEW PARTNERS OF SHARK-REFERENCES
Would you like to become a shark-reference partner? Please contact us per E-mail!
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Upcoming Meetings:
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The 68th Annual Meeting of the Palaeontological Association will be held at Friedrich-Alexander-Universität (FAU) Erlangen-Nürnberg, in the city of Erlangen in northern Bavaria, Germany, 9th–13th December 2024. This will be the first time that the Annual Meeting will take place in Germany.
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Symposium Overview:
Public aquariums showcase aquatic life while raising awareness and educating the public on biodiversity and the need for conservation. Recently, aquaria have followed in the footsteps of zoos by taking more directed approaches in species conservation as well as leveraging animals in their collections to fill biological knowledge gaps through research. Aquaria possess some unique qualities that can be applied to elasmobranch research and conservation efforts. In addition to the increasing number of institutions that now support dedicated research departments or staff, aquaria have considerable public audiences (both physical and virtual), ambassador animals to foster deeper connections and empathy for species, dedicated education departments typically focused from the preschool to high school level, comprehensive communication departments with media connections, and extensive animal care and specialized veterinarian teams. Through these expertise aquaria are able to house animals that are often not feasible to care for in traditional academic settings, and for long durations often throughout entire life cycles, allowing important life history information to be investigated.
There has been a longstanding involvement of aquarium professionals in the American Elasmobranch Society, best highlighted by the career and research accomplishments of the late Alan Henningsen. However, the number of AES members who represent aquaria has dwindled over the past few decades. We hope that this symposium will highlight these past connections, including Alan’s legacy, encouraging more aquaria personnel who attend to sustain their memberships and take more active roles moving forward to engage with other members of AES from different sectors (e.g. academia, nonprofits, etc). Equally, we anticipate that this will further highlight and promote collaborative opportunities between aquaria and AES members to the broader benefit of the elasmobranch research field in general.
Symposium organizers:
Jennifer Wyffels, wyffels@ripleys.com
Steve Kessel, skessel@sheddaquarium.org
Kady Lyons, klyons@georgiaaquarium.org
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IMPORTANT DATES
This year’s annual EEA conference will be held in Thessaloniki, Greece, from 22nd to 24th of October, by the Environmental Organisation iSea, with the aim to bring together the scientific community and other stakeholders working with sharks, rays and chimaeras around Europe and the Mediterranean.
The EEA 2024 Conference topic is “Stronger collaboration for better conservation” focusing to bring together not only an increased number of experienced scientists and other stakeholders from different fields of shark and ray research and conservation, but also give an advanced role to younger researchers that will have the opportunity to better meet the EEA community and the most recent results of their work. This year’s aim is also focused on increasing the participation and the scientific input from data-poor areas and countries that are not highly represented within the EEA community and thus researchers from the Balkans, Eastern Europe, North Africa and the Middle East will be invited and encouraged to participate.
EEA 2024 and its overall content; panels, workshops and keynote speakers, were built on the common values of diversity, equity and community, that EEA members share.
We look forward to hosting you during the 3-day conference for which the agenda and events aim to scale up elasmobranch conservation through the establishment of stronger collaborations!
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The annual meeting of the Asian Society of Ichthyologists and the Indo-Pacific Fish Conference will return to their regular schedule post-COVID-19. The most recent meetings were successfully held at Universiti Sains Malaysia in Penang, Malaysia, on May 28-29, 2024, and at the University of Auckland, New Zealand, on November 20-24, 2023. We are pleased to inform you that the upcoming joint conference, combining these two prestigious ichthyological events, will take place in Taipei, Taiwan, from June 9-13, 2025.
On behalf of the organizing committee, we welcome ichthyologists from around the world who are interested in sharing research about the systematics and ecology of Asian and Indo-Pacific fishes, including topics such as evolution, biogeography, taxonomy, ecology, biology, sustainable fisheries, and conservation. We look forward to the opportunity for the ASI to meet with the IPFC and are especially happy to do so in Taipei. The conference will provide an excellent opportunity to share the latest research results, develop collaborations, and promote research.
more information
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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 (227 Likes/Emojis, 250 Shares):
New hammerhead shark described!
Sphyrna alleni sp. nov., a new hammerhead shark (Carcharhiniformes, Sphyrnidae) from the Caribbean and the Southwest Atlantic.
CINDY GONZALEZ
BAUTISSE POSTAIRE
WILLIAM DRIGGERS
SUSANA CABALLERO
DEMIAN CHAPMAN
Open access!
https://mapress.com/zt/article/view/zootaxa.5512.4.2
Abstract
Hammerhead sharks (Family Sphyrnidae) comprise a monophyletic Miocene radiation of carcharhiniform sharks characterized by their laterally expanded and dorsoventrally compressed head (‘cephalofoil’). The bonnethead shark (Sphyrna tiburo) is currently described as a single amphi-American hammerhead species composed of the subspecies Sphyrna tiburo tiburo in the Western Atlantic Ocean (WA) and S. tiburo vespertina in the Eastern Pacific Ocean (EP). Variation in mitochondrial DNA and cephalofoil shape suggest a species complex, with S. tiburo occurring in the U.S., Mexico, and Bahamas; S. aff. tiburo occurring from Belize to Brazil; and S. vespertina occurring in the EP. Morphometric, meristic, and genetic variation was used to resolve the bonnethead shark complex in the Western Atlantic. Twenty-three specimens (12 S. aff. tiburo from Belize and 11 S. tiburo from U.S.) were subject to sixty-one morphometric measurements and three meristic characters (counts of the number of precaudal vertebrae, lower and upper rows of functional teeth). An allometric formula was used to standardize any effect caused by differences in size of the individuals and data were analyzed with univariate and multivariate statistics. Sphyrna aff. tiburo and S. tiburo have non-overlapping vertebral counts (80-83 and 71-74 respectively) but no morphometric differences were detected. Although not captured in morphometric analysis, the cephalofoil of S. aff. tiburo has a more pointed anterior margin than S. tiburo that together with lobule shaped posterior margins gives the cephalofoil a distinctive shovel-shaped appearance. Concatenated mitochondrial sequences and 12 nuclear microsatellite markers clearly separated S. aff. tiburo and S. tiburo. We conclude that this complex comprises two species in the Western Atlantic, S. tiburo and S. alleni sp. nov., and we provide a description of the latter, which is distinguished by precaudal vertebral counts (80-83), a shovel-shaped cephalofoil with rounded posterior margins, and robust differences in mitochondrial and nuclear genetic markers. We suggest nuclear genetic and meristic examination of EP bonnetheads is needed to update the taxonomical status and redescribe S. vespertina.
We will add the species description to our Website Shark-references asap!
#newspecies #sharks #hammerheadshark #marinebiology #ocean #science #research #discovery #caribbean #atlantic #conservation
Nr. 2 (52 Likes/Emojis, 18 Shares):
New OPEN ACCESS publication:
https://www.nature.com/articles/s41598-024-70677-z#citeas
Maternal risk-management elucidates the evolution of reproductive adaptations in sharks by means of natural selection
Dennis Deeken, Catherine Macdonald, Alison Gainsbury, Michelle L. Green &
Deby L. Cassill
ABSTRACT
Maternal investment theory is the study of how breeding females allocate resources between offspring size and brood size to achieve reproductive success. In classical trade-off models, r/K-selection and bet-hedging selection, the primary predictors of maternal investments in offspring are population density and resource stability. In crowded, stable environments, K-selected females invest in large offspring at an equivalent cost in brood size. In uncrowded, unstable environments, r-selected females invest in large broods at an equivalent cost in offspring size. In unpredictable resource environments, bet-hedging females invest moderately in brood size and offspring size. The maternal risk-management model represents a profound departure from classical trade-off models. Maternal investments in offspring size, brood size, and brood number are shaped independently by autonomous risk factors: the duration of gaps in resources during seasonal cycles, rates of predation, and unpredictable catastrophic events. To date, no single model has risen to a position of preeminence. Here in sharks, we show that maternal investments within and across species do not agree with the predictions of trade-off models and instead agree with the predictions of the maternal risk-management model. Within and across shark species, offspring size and brood size were independent maternal investment strategies. The risk of starvation favored investments in larger offspring. The risk of predation favored investments in larger broods. If empirical studies continue to confirm its predictions, maternal-risk management may yet emerge as a unifying model of diverse reproductive adaptations by means of natural selection.
Reference: Deeken, D., Macdonald, C., Gainsbury, A. et al. Maternal risk-management elucidates the evolution of reproductive adaptations in sharks by means of natural selection. Sci Rep 14, 20088 (2024). https://doi.org/10.1038/s41598-024-70677-z
Nr. 3 (50 Likes/Emojis, 7 Shares):
Many thanks to Phillip Sternes for sharing:
-OPEN ACCESS-
https://onlinelibrary.wiley.com/doi/full/10.1002/ece3.70218
Cautionary tales on the use of proxies to estimate body size
and form of extinct animals
Joel H. Gayford, Russell K. Engelman, Phillip C. Sternes, Wayne M. Itano, Mohamad Bazzi, Alberto Collareta, Rodolfo Salas-Gismondi & Kenshu Shimada
ABSTRACT
Body size is of fundamental importance to our understanding of extinct organisms. Physiology, ecology and life history are all strongly influenced by body size and shape, which ultimately determine how a species interacts with its environment. Reconstruction of body size and form in extinct animals provides insight into the dynamics underlying community composition and faunal turnover in past ecosystems and broad macroevolutionary trends. Many extinct animals are known only from incomplete remains, necessitating the use of anatomical proxies to reconstruct body size and form. Numerous limitations affecting the appropriateness of these proxies are often overlooked, leading to controversy and downstream inaccuracies in studies for which reconstructions represent key input data. In this perspective, we discuss four prominent case studies (Dunkleosteus, Helicoprion, Megalodon and Perucetus) in which proxy taxa have been used to estimate body size and shape from fragmentary remains. We synthesise the results of these and other studies to discuss nuances affecting the validity of taxon selection when reconstructing extinct organisms, as well as mitigation measures that can ensure the selection of the most appropriate proxy. We argue that these precautionary measures are necessary to maximise the robustness of reconstructions in extinct taxa for better evolutionary and ecological inferences.
Keywords: allometric scaling, body shape, evolution, fossil, morphology, palaeobiology
Reference: Gayford, J. H., Engelman, R. K., Sternes, P. C., Itano, W. M., Bazzi, M., Collareta, A., Salas-Gismondi, R., & Shimada, K. (2024). Cautionary tales on the use of proxies to estimate body size and form of extinct animals. Ecology and Evolution, 14, e70218. https://doi.org/10.1002/ece3.70218
shark references: https://shark-references.com/.../Otodus-Megaselachus...
Many thanks to Hiroyuki Motomura for sharing!
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New Images
Many thanks to the following people for providing images:
Frederik Mollen, Elasmobranch Research, Belgium for some images of Neotrygon varidens
Javier Guallart, Universitat de València for images of denticles of Somniosus rostratus and Oxynotus centrina
T. Reinecke, Bochum for images of
Triakis wardi, Isistius trituratus, and Galeorhinus ypresiensis
Brit Finucci for images of Harriotta avia
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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:
new entry: Silva, E.M. & Gallo, V. (2002): New occurrence of Myliobatiformes (Chondrichthyes: Batoidea) in the Maria Farinha Formation, Paleocene of the Pernambuoc-Paraiba Basin, Northeastern Brazil. Boletim do Museu Nacional, 65, 1–11
new entry: Stringer, G.L. & Henry, M. (1996) First report of the Cretaceous shark Squalicorax from Louisiana. Mississippi Geology, 17(2), 40–43
Extant Chondrichthyes:
new entry: Pokapunt, W,J. & Tantivala, A. & Munprasit & Samrankitdamrong, P. (1983) Some deep-sea fishes in the Andaman Sea. Exploratory Fishing Division, Department of Fisheries, Bangkok, 70 pp.
new entry: Shcherbachev, Y.N. & Levitsky, V.N. & Portsev, P.D. (1978) On records of the rare species of deep-sea fishes from off Southern Africa. Tr.Inst.OkeanoI./Trans. P.P.Shirshov Inst.Oceanol., 111: 185–194
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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TAXONOMIC NEWS/ NEW SPECIES
Extant Chondrichthyes:
Gonzalez, C. & Postaire, B. & Driggers, W. & Caballero, S. & Chapman, D. (2024) Sphyrna alleni sp. nov., a new hammerhead shark (Carcharhiniformes, Sphyrnidae) from the Caribbean and the Southwest Atlantic. Zootaxa, 5512(4), 491–511
New species: Sphyrna alleni
Abstract: Hammerhead sharks (Family Sphyrnidae) comprise a monophyletic Miocene radiation of carcharhiniform sharks characterized by their laterally expanded and dorsoventrally compressed head (‘cephalofoil’). The bonnethead shark (Sphyrna tiburo) is currently described as a single amphi-American hammerhead species composed of the subspecies Sphyrna tiburo tiburo in the Western Atlantic Ocean (WA) and S. tiburo vespertina in the Eastern Pacific Ocean (EP). Variation in mitochondrial DNA and cephalofoil shape suggest a species complex, with S. tiburo occurring in the U.S., Mexico, and Bahamas; S. aff. tiburo occurring from Belize to Brazil; and S. vespertina occurring in the EP. Morphometric, meristic, and genetic variation was used to resolve the bonnethead shark complex in the Western Atlantic. Twenty-three specimens (12 S. aff. tiburo from Belize and 11 S. tiburo from U.S.) were subject to sixty-one morphometric measurements and three meristic characters (counts of the number of precaudal vertebrae, lower and upper rows of functional teeth). An allometric formula was used to standardize any effect caused by differences in size of the individuals and data were analyzed with univariate and multivariate statistics. Sphyrna aff. tiburo and S. tiburo have non-overlapping vertebral counts (80-83 and 71-74 respectively) but no morphometric differences were detected. Although not captured in morphometric analysis, the cephalofoil of S. aff. tiburo has a more pointed anterior margin than S. tiburo that together with lobule shaped posterior margins gives the cephalofoil a distinctive shovel-shaped appearance. Concatenated mitochondrial sequences and 12 nuclear microsatellite markers clearly separated S. aff. tiburo and S. tiburo. We conclude that this complex comprises two species in the Western Atlantic, S. tiburo and S. alleni sp. nov., and we provide a description of the latter, which is distinguished by precaudal vertebral counts (80-83), a shovel-shaped cephalofoil with rounded posterior margins, and robust differences in mitochondrial and nuclear genetic markers. We suggest nuclear genetic and meristic examination of EP bonnetheads is needed to update the taxonomical status and redescribe S. vespertina.
Extinct Chondrichthyes:
no news!
Parasites:
Santoro, M. & Occhibove, F. & López-Verdejo, A. & Rojas, A. & Solano-Barquero, A. (2024) Paronatrema davidbowiei n. sp. (Trematoda: Syncoeliidae), a new parasite of the pelagic thresher (Alopias pelagicus) and its phylogenetic relationships within the suborder Hemiurata Skrjabin & Guschanskaja, 1954. Parasitology International, 103, Article 102953
New species: SParonatrema davidbowiei
Abstract: A new species of hemiurid trematode found on the gills and in the aorta of the pelagic thresher Alopias pelagicus from the eastern Pacific, off Costa Rica, is described based on an integrative taxonomic approach that includes the use of light and scanning electron microscopy, and 28S rDNA sequencing. Phylogenetic analysis was also performed to explore, for the first time, the relationships of a member of the subfamily Otiotrematinae within the suborder Hemiurata. Paronatrema davidbowiei n. sp. can be distinguished from the congeners by having tegumental spines on the dorsal surface of the forebody, papillae on the oral sucker, and different morphology or number of testicular follicles. BLAST analysis revealed that sequences of Paronatrema davidbowiei n. sp. had the highest degree of similarity with Hirudinella spp. (Hirudinellidae). Results from Maximum Likelihood and Bayesian phylogenetic analyses, returning trees with the exact same topology and strong branch support, distinguished between the two superfamilies included in the suborder Hemiurata: Azygioidea and Hemiuroidea. Our analysis placed the new species in a clade with Copiatestes filiferus, the only existing sequence of the family Syncoeliidae.
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Latest Research Articles
Extant Chondrichthyes:
Abisha, C. & Dahanukar, N. & Ranjeet, K. & Raghavan, R. (2024): Data Deficient‘ but potentially threatened: first biological observations on the poorly known quagga catshark (Halaelurus quagga). Marine and Freshwater Research, 75(12), Article Mf23234 https://dx.doi.org/10.1071/mf23234
Adams, L. & Wyffels, J.T. & Goodwin, B. & Munson, R. & Le Borgne, L. & Feldheim, K.A. & Lyons, K. (2024): Monitoring egg fertility, embryonic morbidity, and mortality in an oviparous elasmobranch using ultrasonography. Frontiers in Veterinary Science, 11, Article 1410377 https://dx.doi.org/10.3389/fvets.2024.1410377
Al Hameli, S. & Bruns, S. & Henderson, A.C. (2024): Notable abundance of two Critically Endangered elasmobranch fishes near an area of intensive coastal development in the Arabian Gulf. Endangered Species Research, 53, 89–95 https://dx.doi.org/10.3354/esr01290
Anderson, B.N. & Bowlby, H.D. & Saul, S. & Kang, Y. & Hammerschlag, N. & Natanson, L.J. & Sulikowski, J.A. (2024): First insights into the vertical habitat use of young porbeagles in the north-western Atlantic with implications for bycatch reduction strategies. Marine and Freshwater Research, 75(12), Article Mf23182 https://dx.doi.org/10.1071/mf23182
Andres, A.M. & Slesinger, E. & Young, R.E. & Saba, G.K. & Saba, V.S. & Phelan, B.A. & Rosendale, J. & Wieczorek, D. & White, C.F. & Seibel, B.A. (2024): Thermal sensitivity of metabolic performance in Squalus acanthias: efficacy of aerobic scope as a predictor of viable thermal habitat. Marine Ecology Progress Series, 738, 161–185 https://dx.doi.org/10.3354/meps14586
Arimura, S. & Wong, M.K.S. & Inoue, R. & Kawano, M. & Shimoyama, K. & Fujimori, C. & Tokunaga, K. & Takagi, W. & Hyodo, S. (2024): Functional characterization of follicle-stimulating hormone and luteinizing hormone receptors in cloudy catshark, Scyliorhinus torazame. General and Comparative Endocrinology, 354, Article 114542 https://dx.doi.org/10.1016/j.ygcen.2024.114542
Brancart, K. & Kerstetter, D.W. & Bond, M. & Burkholder, D. (2024): Predator-Prey Interactions in Marine Ichthyofaunal Communities of the Nearshore Environment of South Bimini Island. Caribbean Journal of Science, 54(1), 36–46
Brown, T.W. & Murcia, F.V. & Garcia, A. & Ramos, E.A. (2024): Spinner Dolphin With Evidence of Shark Interaction on Utila Island, Honduras. Caribbean Journal of Science, 54(1), 32–35
Burke, P.J. & Meyer, L. & Raoult, V. & Huveneers, C. & Williamson, J.E. (2024): Multi-disciplinary approach identifies pelagic nutrient linkage by sawsharks. Reviews in Fish Biology and Fisheries, in press https://dx.doi.org/10.1007/s11160-024-09888-6
Cañedo Apolaya, R.M.L. (2024): Códigos de barras de ADN de los condrictios en el Perú y su aplicación para detectar potenciales nuevas especies. Thesis, Universidad Nacional Mayor de San Marcos
Carrillo‑Colín, L.D. & Márquez‑Farías, J.F. & Zamora‑García, O.G. (2024): Bayesian estimation of the age and growth of the pelagic thresher shark (Alopias pelagicus) from the Mexican Pacific. Environmental Biology of Fishes, 107, 927–943 https://dx.doi.org/10.1007/s10641-024-01592-5
Chapple, T.K. & Cade, D.E. & Goldbogen, J. & Massett, N. & Payne, N. & McInturf, A.G. (2024): Behavioral response of megafauna to boat collision measured via animal-borne camera and IMU. Frontiers in Marine Science, 11, Article 1430961 https://dx.doi.org/10.3389/fmars.2024.1430961
Clerkin, P.J. & Arostegui, M.C. & Chiang, W. & Lin, S. & Miller, C.D. & Braun, C.D. (2024): First telemetry insights into the movements and vertical habitat use of megamouth shark (Megachasma pelagios) in the northwest Pacific. Deep–Sea Research Part I–Oceanographic Research Papers, 212, Article 104385 https://dx.doi.org/10.1016/j.dsr.2024.104385
Clua, E.E. & Demarchi, S. & Reid, D. (2024): Use of presence vs absence of symphyseal teeth in jaws for the forensic analysis of bites by large traumatogenic shark species. Journal of Forensic Sciences, in press https://dx.doi.org/10.1111/1556-4029.15594
Crespo, G.O. & Griffiths, S. & Murua, H. & Österblom, H. & Lopez, J. (2024): Adaptive spatiotemporal management to reduce shark bycatch in tuna fisheries. Conservation Biology, 38(4), Article e14324 https://dx.doi.org/10.1111/cobi.14324
De Boeck, G. & Lardon, I. & Eyckmans, M. & Vu, T.N. & Laukens, K. & Dommisse, R. & Wood, C.M. (2024): Spiny dogfish, Squalus suckleyi, shows a good tolerance for hypoxia but need long recovery times. Conservation Physiology, 12(1), Article coae054 https://dx.doi.org/10.1093/conphys/coae054
Dedman, S. & Moxley, J.H. & Papastamatiou, Y.P. & Braccini, M. & Caselle, J.E. & Chapman, D.D. & Cinner, J.E. & Dillon, E.M. & Dulvy, N.K. & Dunn, R.E. & Espinoza, M. & Harborne, A.R. & Harvey, E.S. & Heupel, M.R. & Huveneers, C. & Graham, N.A.J. & Ketchum, J.T. & Klinard, N.V. & Kock, A.A. & Lowe, C.G. & MacNeil, M.A. & Madin, E.M.P. & McCauley, D.J. & Meekan, M.G. & Meier, A.C. & Simpfendorfer, C.A. & Tinker, M.T. & Winton, M. & Wirsing, A.J. & Heithaus, M.R. (2024): Ecological roles and importance of sharks in the Anthropocene Ocean. Science, 385(6708), Article adl2362 https://dx.doi.org/10.1126/science.adl2362
Deeken, D. & Macdonald, C. & Gainsbury, A. & Green, M.L. & Cassill, D.L. (2024): Maternal risk-management elucidates the evolution of reproductive adaptations in sharks by means of natural selection. Scientifc Reports, 14, Article 20088 https://dx.doi.org/10.1038/s41598-024-70677-z
Esposito, G. & Meletiadis, A. & Sciuto, S. & Prearo, M. & Gagliardi, F. & Corrias, I. & Pira, A. & Dondo, A. & Briguglio, P. & Ghittino, C. & Dedola, D. & Bozzetta, E. & Acutis, P.L. & Pastorino, P. & Colussi, S. (2024): First report of recurrent parthenogenesis as an adaptive reproductive strategy in the endangered common smooth-hound shark Mustelus mustelus. Scientific Reports, 14(1), Article 17171 https://dx.doi.org/10.1038/s41598-024-67804-1
Fath, M.A. & Wong, G. & Colombero, C.-R. & Gabler-Smith, M.K. & Lauder, G.V. & Wainwright, D.K. (2024): Patterns of dermal denticle loss in sharks. Journal of Morphology, 285(9), Article e21764 https://dx.doi.org/10.1002/jmor.21764
Gayford, J.H. & Flores-Flores, E.M. (2024): No evidence for population-level benefits of polyandry in sharks and rays. PLoS ONE, 19(9), Article e0308141 https://dx.doi.org/10.1371/journal.pone.0308141
George, R.H. & Buckner, C. & Baine, K. & Steeil, J. & White, S. & Handsel, T. & Wyffels, J.T. (2024): Surgical outcomes and complications associated with ovariectomy in the southern stingray Hypanus americanus. Frontiers in Veterinary Science, 11, Article 1410421 https://dx.doi.org/10.3389/fvets.2024.1410421
Gonzalez, C. & Postaire, B. & Driggers, W. & Caballero, S. & Chapman, D. (2024): Sphyrna alleni sp. nov., a new hammerhead shark (Carcharhiniformes, Sphyrnidae) from the Caribbean and the Southwest Atlantic. Zootaxa, 5512(4), 491–511 https://dx.doi.org/10.11646/zootaxa.5512.4.2
Grigorov, I.V. & Kivva, K.K. & Volvenko, I.V. & Orlov, A.M. (2024): Distribution, biology, and relative abundance of the understudied deep-water whiteblotched skate Bathyraja maculata. Progress in Oceanography, 226, Article 103300 https://dx.doi.org/10.1016/j.pocean.2024.103300
Guttridge, T.L. & Matich, P. & Guttridge, A.E. & Winton, M. & Dedman, S. & Skomal, G. (2024): First evidence of white sharks, Carcharodon carcharias, in the tongue of the ocean, central Bahamas. Frontiers in Marine Science, 11, Article 1451808 https://dx.doi.org/10.3389/fmars.2024.1451808
Harry, A.V. & Wakefield, C.B. & Newman, S.J. & Braccini, J.M. (2024): Trends in catch rates of sawfish on the Australian North West Shelf. Endangered Species Research, 53, 23–33 https://dx.doi.org/10.3354/esr01289
Hung, C.Y. & Huynh, H.H. & Wu, X.H. & Tsai, W.P. (2024): Multimodel approach to a support stock assessment of standardized catch and effort data: A case study of blue shark (Prionace glauca) in the Indian Ocean by the Taiwanese large-scale longline fishery Journal of Marine Science and Technology–Taiwan, in press https://dx.doi.org/10.51400/2709-6998.2734
Kilfoil, J.P. & Krohn, G. & Clua, E.E.G. & Planes, S. & Gastrich, K.R. & Heithaus, M.R. & Wirsing, A.J. (2024): Divergent learning responses to a spatially consistent olfactory stimulus in two reef shark species. Marine Ecology Progress Series, 738, 151–160 https://dx.doi.org/10.3354/meps14608
Klimley, A.P. & Curtis, T.H. & Johnston, E.M. & Kock, A. & Stevens, G.M.W. (2024): A review of elasmobranch breaching behavior: why do sharks and rays propel themselves out of the water into the air? Environmental Biology of Fishes, in press https://dx.doi.org/10.1007/s10641-024-01584-5
Kraft, S. & Winkler, A.C. & Abecasis, D. & Mourier, J. (2024): Long-term co-occurrence and gregariousness in the migratory common stingray using network analysis. Marine Biology, 171(9), Article 176 https://dx.doi.org/10.1007/s00227-024-04498-z
Kressler, M.M. & Byrnes, E.E. & Trevail, A.M. & White, C.E. & Heim, V. & Smukall, M. & Gleiss, A.C. & Sherley, R.B. (2024): Habitat selection and spatial behaviour of vulnerable juvenile lemon sharks: Implications for conservation. Ecological Indicators, 166, Article 112239 https://dx.doi.org/10.1016/j.ecolind.2024.112239
Lear, K.O. & Estrabeau, C. & Morgan, D.L. & Whitney, N.M. & Gleiss, A.C. & Bignell, C. & Pillans, R.D. & Bateman, R.L. (2024): The secret lives of wedgefish: first insights into fine-scale behaviour and movement ecology of a globally imperilled ray. Marine Biology, 171(9), Article 180 https://dx.doi.org/10.1007/s00227-024-04500-8
Leone, A. & Arnaud-Haond, S. & Babbucci, M. & Bargelloni, L. & Coscia, I. & Damalas, D. & Delord, C. & Franch, R. & Garibaldi, F. & Macias, D. & Mariani, S. & Martinsohn, J. & Megalofonou, P. & Micarelli, P. & Nikolic, N. & Prodöhl, P.A. & Sperone, E. & Stagioni, M. & Zanzi, A. & Cariani, A. & Tinti, F (2024): Population Genomics of the Blue Shark, Prionace glauca, Reveals Different Populations in the Mediterranean Sea and the Northeast Atlantic. Evolutionary Applications, 17(9), Article e70005 https://dx.doi.org/10.1111/eva.70005
Levy, A. & Barash, A. & Zaguri, C. & Hadad, A. & Polsky, P. (2024): Improving deep learning based bluespotted ribbontail ray (Taeniura lymma) recognition. Ecological Informatics, 82, Article 102737 https://dx.doi.org/10.1016/j.ecoinf.2024.102737
Lin, Y.J. & Hsu, H.H. & Nazeer, Z. & Panickan, P. & Maneja, R.H. & Lozano-Cortés, D. & Qasem, A. & Huertas, A.D. & Rabaoui, L.J. (2024): Resource use by Sphyrna mokarran and S. lewini (Chondrichthyes) neonates and juveniles in the western Arabian Gulf: a stable isotope analysis. Endangered Species Research, 54, 277–284 https://dx.doi.org/10.3354/esr01341
Liu, Y.X. & Wang, H. & Chiu, C.K.C. & Wu, Y.J. & Bi, Y.C. (2024): 1H, 13C and 15N resonance assignments of a shark variable new antigen receptor against hyaluronan synthase. Biomolecular Nmr Assignments, in press https://dx.doi.org/10.1007/s12104-024-10190-6
Lonati, M. & Jahanbakht, M. & Atkins, D. & Bierwagen, S.L. & Chin, A. & Barnett, A. & Rummer, J.L. (2024): Novel use of deep neural networks on photographic identification of epaulette sharks (Hemiscyllium ocellatum) across life stages. Journal of Fish Biology, in press https://dx.doi.org/10.1111/jfb.15887
McDavitt, M.T. & Simeon, B.M. (2024): New iEcology records and range extension for the clown wedgefish Rhynchobatus cooki. Marine Biodiversity, 54, Article 75 https://dx.doi.org/10.1007/s12526-024-01467-z
McIvor, A.J. & Williams, C.T. & Rich, W.A. & Knochel, A.M. & Burns, N.M. & Berumen, M.L. (2024): Mark-recapture validates the use of photo-identification for the widely distributed blue-spotted ribbontail ray, Taeniura lymma. Scientific Reports, 14(1), Article 17432 https://dx.doi.org/10.1038/s41598-024-68302-0
Micarelli, P. & Pireddu, M. & Persia, D. & Sanna, M. & Vicariotto, C. & Pacifico, A. & Storelli, P. & Mahrer, M. & Venanzi, E. & Reinero, F.R. (2024): Observations on an Aggregation of Grey Reef Sharks (Carcharhinus amblyrhynchos) in the Mozambique Channel Off the Coast of Nosy Be (Madagascar) and Tools for Photo-Identification—A New Aggregation Nursery Site? Biology, 13, Article 661 https://dx.doi.org/10.3390/biology13090661
Monteiro, F.C. & Carreira, R.D. & Gramlich, K.C. & de Pinho, J.V. & de Almeida, R.F. & Vianna, M. & Massone, C.G. & Hauser-Davis, R.A. (2024): Baseline polycyclic aromatic hydrocarbon maternal transfer data in Lesser Numbfish Narcine brasiliensis (Elasmobranchii: Batoidea) from an impacted estuary in Southeastern Brazil. Environmental Toxicology and Pharmacology, 110, Article 104531 https://dx.doi.org/10.1016/j.etap.2024.104531
Newsome, R.J. & Grimmel, H.M.V. & Pouponeau, D.K. & Moulinie, E.E. & Andre, A.A. & Bullock, R.W. (2024): Eat-clean-repeat: reef manta rays (Mobula alfredi) undertake repetitive feeding-cleaning cycles at an aggregation site in Seychelles. Frontiers in Marine Science, 11, Article 1422655 https://dx.doi.org/10.3389/fmars.2024.1422655
Pissarra, V. & Santana, A. & Panisi, M. & Santos, C.P. & Maia, H. & Vasconcelos, L. & Nuno, A. & Porrinos, G. & da Silva, C.V. & Rosa, R. & Santos, C.F. (2024): Fisher‘s perceptions on shark fisheries in Sao Tome Island (Gulf of Guinea, West Africa). Regional Studies in Marine Science, 77, Article 103711 https://dx.doi.org/10.1016/j.rsma.2024.103711
Puentes, V. & Barragán-Barrera, D.C. & Do Amaral, K.B. & Escobar, F.D. & Zapata, L.A. & Zambrano, E. & Barreto, C.G. & Tavera, J. & Polo, C.J. & Altamar, J. & Moreno, A.S. & Benavides, I.F. (2024): Descriptive and spatial analysis of bycatch in tuna purse-seine fishery in the colombian Pacific Ocean, with an elasmobranch approach. Ocean and Coastal Research, 72, Article e24038 https://dx.doi.org/10.1590/2675-2824072.23015
Roa, J. & Tresguerres, M. (2024): Cellular Mechanisms for pH Regulation and Energy Metabolism in Sharks and Rays. Physiology, in press https://dx.doi.org/10.1152/physiol.2024.39.S1.1187
Santos, L.M. & Lang, A. & Wahidi, R. & Bonacci, A. & Gautam, S. & Parsons, J. (2024): The effect of shortfin mako shark skin at the reattachment of a separated turbulent boundary layer. Bioinspiration & Biomimetics, 19(5), Article 56012 https://dx.doi.org/10.1088/1748-3190/ad679c
Sayama, S. & Natsuhara, M. & Shinohara, G. & Maeda, M. & Tanaka, H. (2024): Three-dimensional shape of natural riblets in the white shark: relationship between the denticle morphology and swimming speed of sharks. Journal of the Royal Society Interface, 21(217), Article 20240063 https://dx.doi.org/10.1098/rsif.2024.0063
Schuitema, O. & Motta, P.J. & Gelsleichter, J. & Horton, M. & Habegger, M.L. (2024): Histological comparison of shark dermis across various ecomorphologies. Anatomical Record, in press https://dx.doi.org/10.1002/ar.25568
Simonitis, L.E. & Clark, A.E. & Barskaya, E. & Castillo, G. & Porter, M. & Meredith, T. (2024): Getting Nosy: Olfactory Rosette Morphology and Lamellar Microstructure of Two Chondrichthyan Species. Integrative and Comparative Biology, in press https://dx.doi.org/10.1093/icb/icae103
Sisma-Ventura, G. & Silverman, J. & Segal, Y. & Hauzer, H. & Abu Khadra, M. & Stern, N. & Guy-Haim, T. & Herut, B. (2024): Exceptionally high levels of total mercury in deep-sea sharks of the Southeastern Mediterranean sea over the last ∼ 40 years. Environment International, 187, Article 108661 https://dx.doi.org/10.1016/j.envint.2024.108661
Staeudle, T.M. & Parmentier, B. & Poos, J.J. (2024): Accounting for spatio-temporal distribution changes in size-structured abundance estimates for a data-limited stock of Raja clavata. ICES Journal of Marine Science, in press https://dx.doi.org/10.1093/icesjms/fsae106
Stefan-van Staden, R.I. & Brinza, A.D. & Gheorghe, D.C. & Stanciu, G. (2024): Fast On-Site Electroanalysis of Eicosapentaenoic Acid Ethyl Ester in the Liver and Meat of Stingray Using a Stochastic Miniplatform Based on a 3D Stochastic Microsensor. Journal of the Electrochemical Society, 171(8), Article 87512 https://dx.doi.org/10.1149/1945-7111/ad6e20
Stelbrink, B. (2024): Corrigendum to “Molecular systematics and global phylogeography of angel sharks (genus Squatina)” [Mol. Phylogenetics Evol. 54 (2010) 395–404] Molecular Phylogenetics and Evolution, 199, Article 108145 https://dx.doi.org/10.1016/j.ympev.2024.108145
Taylor, M.S. & Weder, R. (2024): On the Economics of Extinction and Possible Mass Extinctions. Journal of Economic Perspectives, in press https://dx.doi.org/10.1257/jep.38.3.237
Tian, H. & Zhong, J.S. & Chen, J.Y. & Jiang, Y.E. & Zhang, J. & Xie, W. & Gao, Z.Y. & Wang, Y.C. & Liu, H.Z. & Wang, S.J. & Zhang, F. & Yang, J. & Yin, K.D. (2024): Southwestward Expansion of the Pacific Sleeper Shark‘s (Somniosus pacificus) Known Distribution into the South China Sea. Animals, 14(15), Article 2162 https://dx.doi.org/10.3390/ani14152162
Wagner, I. & Smolina, I. & Koop, M.E.L. & Bal, T. & Lizano, A.M. & Choo, L. & Hofreiter, M. & Gennari, E. & de Sabata, E. & Shivji, M.S. & Noble, L.R. & Jones, C.S. & Hoarau, G. (2024): Genome analysis reveals three distinct lineages of the cosmopolitan white shark. Current Biology, in press https://dx.doi.org/10.1016/j.cub.2024.06.076
Wosnick, N. & Chaves, A.P. & Giareta, E.P. & Leite, R.D. & Saint‘Pierre, T.D. & Hauser-Davis, R.A. (2024): From screens to seas: Tech contaminants in tiger sharks☆. Environmental Pollution, 360, Article 124690 https://dx.doi.org/10.1016/j.envpol.2024.124690
Extinct Chondrichthyes:
Benites-Palomino, A. & Aguirre-Fernández, G. & Velez-Juarbe, J. & Carrillo-Briceño, J.D. & Sánchez, R. & Sánchez-Villagra, M.R. (2024): Trophic interactions of sharks and crocodylians with a sea cow (Sirenia) from the Miocene of Venezuela. Journal of Vertebrate Paleontology, in press https://dx.doi.org/10.1080/02724634.2024.2381505
Brignon, A. (2024): Les dents du requin géant Otodus megalodon dans l’iconographie du XVIe jusqu’au début du XIXe siècle (suite). Fossiles, 58, 56–57
Durbin, O.L. & Hildebrandt, C. & Benton, M.J. (2024): Onset of the Rhaetian Transgression in deep waters at Lilstock, North Somerset: Microvertebrate faunas. Proceedings of the Geologists Association, 135(2), 181–195 https://dx.doi.org/10.1016/j.pgeola.2024.02.001
Fischer, J. & Jojhns, M.J. (2024): State of Knowledge and Problems Regarding Fossil Chimaeroid Egg Cases. [Abstract] The 95th Annual Meeting of the Paläontologische Gesellschaft (PalGes)
Gayford, J.H. & Engelman, R.K. & Sternes, P.C. & Itano, W.M. & Bazzi, M. & Collareta, A. & Salas-Gismondi, R. & Shimada, K. (2024): Cautionary tales on the use of proxies to estimate body size and form of extinct animals. Ecology and Evolution, 14(9), Article e70218 https://dx.doi.org/10.1002/ece3.70218
Huhle, H. (2024): Fossilien aus dem Unteroligozän (Rupelium) des Braunkohletagebaus Amsdorf: Haie, Rochen und Chimären – eine Bilanz. https://www.steinkern.de/
Kocsis, L. (2024): The Elasmobranch Fossil Record of the Indo-Australian Archipelago since the Miocene: A Literature Review and New Discoveries from Northern Borneo. Diversity, 16, Article 323 https://dx.doi.org/10.3390/d16060323
Medeiros, S. & Francischini, H. & Oddone, M.C. & Cardoso, L.G. & Dentzien-Dias, P. (2024): Shark (Neoselachii) vertebral centra from the Quaternary of southern Brazil.. Revista Brasileira De Paleontologia, 27(2), Article e20240439 https://dx.doi.org/10.4072/rbp.2024.2.0439
Mediodia, D. & Castro, A. & Tablizo, M. & Policarpio, D. & Calvelo, J. & Baguio, J.P. & Borja, A. & Lin, C.-H, & Fernando, A.G. (2024): Paleoichthyology in the Philippines: A review of Cenozoic fish fossils with insights on its current status and future opportunities Geobios, in press https://dx.doi.org/10.1016/j.geobios.2024.02.006
Otero, R.A. (2025): Review of two marine vertebrate assemblages from the Arauco Basin (central Chile) reveals diversity changes throughout the Maastrichtian. Cretaceous Research, 166, Article 105996 https://dx.doi.org/10.1016/j.cretres.2024.105996
Parasites:
Chagas, J.M. & Ribeiro, D.D. & Mendes, T.F. & Montefeltro, F.C. & dos Anjos, L.A. (2024): Diversity and ecological relationships of Cestoda and Monogenoidea parasites of freshwater stingrays (Myliobatiformes, Potamotrygonidae), in the upper Parana River, Brazil. International Journal for Parasitology–Parasites and Wildlife, 24, Article 100968 https://dx.doi.org/10.1016/j.ijppaw.2024.100968
Lizarraga, A. & Appy, R. & Goffredi, S.K. (2024): Life cycle and development of the marine leech Branchellion lobata (Hirudinea: Piscicolidae), from round stingrays, Urobatis halleri, from southern California. Scientific Reports, 14(1), Article 18108 https://dx.doi.org/10.1038/s41598-024-69078-z
Santoro, M. & Occhibove, F. & López-Verdejo, A. & Rojas, A. & Solano-Barquero, A. (2024): Paronatrema davidbowiei n. sp. (Trematoda: Syncoeliidae), a new parasite of the pelagic thresher (Alopias pelagicus) and its phylogenetic relationships within the suborder Hemiurata Skrjabin & Guschanskaja, 1954. Parasitology International, 103, Article 102953 https://dx.doi.org/10.1016/j.parint.2024.102953
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MISCELLANEOUS:
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White sharks and extinct giant megalodons may swim at similar speeds
- Date: August 5, 2024
- Source: Tokyo Institute of Technology
- Summary: New findings on how sharks achieve drag reduction could inspire the design of riblets for more efficient aircraft and boats. In their investigation of great white shark denticles, researchers found that ridge height and spacing play crucial roles in drag reduction at different swimming speeds. Higher middle ridges aid sharks in efficient cruising at slower speeds, while the lower side ridges become more critical for drag reduction during high-speed hunting bursts. The analysis also suggests that the speeds of an extinct giant shark, megalodon, may not much differ from those of the white shark.
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- Date: September 25, 2024
- Source: University of Washington
- Summary: Researchers have discovered a new way to help liquid flow in only one direction, but without using the flaps that engines and our circulatory system rely upon to prevent fluid backup. The team created a flexible pipe with an interior helical structure inspired by the anatomy of shark intestines -- creating a prototype inspired by biology but with applications in engineering and medicine.
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Grey reef sharks are having to abandon the coral reefs they call home in the face of warming oceans, new research finds
- Date: September 9, 2024
- Source: Lancaster University
- Summary: Grey reef sharks are having to abandon the coral reefs they call home in the face of warming oceans, new research finds. Scientists, using a combination of satellite remote sensing and a network of acoustic receivers on the seabed, have discovered sharks are deserting coral reefs at times of environmental stress, such as high temperatures that can lead to coral bleaching events.
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- Date: August 29, 2024
- Source: Taylor & Francis Group
- Summary: A new study showing how a prehistoric sea cow was preyed upon by not one, but two different carnivores -- a crocodilian and a shark -- is revealing clues into both the predation tactics of ancient creatures and the wider food chain millions of years ago.
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More and more new species of sharks are being discovered as humanity peers deeper into the oceans.
* This article was originally published on 12 July 2023. It was updated on 24 September 2024 to include details of a new species of ghost shark – or spookfish – discovered off the coast of New Zealand.
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New IUCN Shark News Newsletter is out!
Download: https://www.iucnssg.org/shark-news.html
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