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Identification complexity of critically endangered Squatina squatina and Squatina aculeata in Turkey
Identification complexity of critically endangered Squatina squatina (Linnaeus, 1758) and Squatina aculeata Cuvier, 1829 in the Mediterranean Sea (Turkey) Inci Tuney-Kizilkaya; Elizabeth Grace Tunka Bengil ABSTRACT: Sharks and rays, besides their economic importance, are ecologically important organisms with a diverse group. After a pregnant Squatina sp. was captured as by-catch, Akyol et al. (2015) published
Microplastic Contamination and Risk Assessment in Blue Shark
Microplastic Contamination and Risk Assessment in Blue Shark (Prionace Glauca) from the Eastern Tropical Pacific Ocean Huang, Xuemin and Gao, Huachen and Li, Zezheng and Wu, Feng and Gong, Yi and Li, Yunkai ABSTRACT: Despite concerns regarding the environmental impacts of microplastics (MPs), knowledge of the MP contamination levels and potential risks in the oceanic
Impact of artisanal fisheries on threatened sharks and rays in the Bay of Bengal, Bangladesh
Fishers’ tales—Impact of artisanal fisheries on threatened sharks and rays in the Bay of Bengal, Bangladesh Alifa Bintha Haque, Rachel D. Cavanagh, Julia L. Y. Spaet ABSTRACT: Increasing fishing pressure has negatively impacted elasmobranch populations globally. Despite high levels of historical and current fishing pressure, the Bay of Bengal region remains data-poor. Focusing on Bangladesh,
Distribution and site fidelity of the reef manta ray in Dungonab Bay, Sudan
Home sweet home: spatiotemporal distribution and site fidelity of the reef manta ray (Mobula alfredi) in Dungonab Bay, Sudan Anna M. Knochel, Nigel E. Hussey, Steven T. Kessel, Camrin D. Braun, Jesse E. M. Cochran, Graham Hill, Rebecca Klaus, Tarik Checkchak, Nasereldin M. Elamin El Hassen, Mohammed Younnis, Michael L. Berumen ABSTRACT: BackgroundReef manta ray
Relationship Between Skin Scales and the Main Flow Field Around the Shortfin Mako Shark
Relationship Between Skin Scales and the Main Flow Field Around the Shortfin Mako Shark Isurus oxyrinchus Chengchun Zhang, Meihong Gao, Guangyuan Liu, Yihua Zheng, Chen Xue, Chun Shen ABSTRACT: The aim of this study was to reveal potential relationship between the main flow field around a shortfin mako shark and the surface morphology of shark
First report on metal and metalloid contamination of Ampullae of Lorenzini in sharks
First report on metal and metalloid contamination of Ampullae of Lorenzini in sharks: A case study employing the Brazilian sharpnose shark Rhizoprionodon lalandii from Southeastern Brazil as an ecotoxicological model Isabel Quental Willmer, Natascha Wosnick, Rafael Christian Chávez Rocha, Tatiana Dillenburg, Saint’Pierre, Marcelo Vianna, Rachel Ann Hauser-Davis ABSTRACT: Metal contamination has never been assessed in
Global-Scale Environmental Niche and Habitat of Blue Shark by Size and Sex
Global-Scale Environmental Niche and Habitat of Blue Shark (Prionace glauca) by Size and Sex: A Pivotal Step to Improving Stock Management Jean-Noël Druon, Steven Campana, Frederic Vandeperre, Fábio H. V. Hazin, Heather Bowlby, Rui Coelho, Nuno Queiroz, Fabrizio Serena, Francisco Abascal, Dimitrios Damalas, Michael Musyl, Jon Lopez, Barbara Block, Pedro Afonso, Heidi Dewar, Philippe S.
Thirty-five years of tiger shark Galeocerdo cuvier relative abundance near Bimini, Bahamas
Thirty-five years of tiger shark Galeocerdo cuvier relative abundance near Bimini, Bahamas, and the Southeastern United States with a comparison across jurisdictional bounds Matthew J. Smukall, John Carlson, Steven T. Kessel, Tristan L. Guttridge, Félicie Dhellemmes, Andrew C. Seitz, Samuel Gruber ABSTRACT: Abundances of large sharks are reported to have declined worldwide, and in response
Changes in genetic composition of tiger sharks and potential loss of a south-eastern Australia population
Retrospective genomics highlights changes in genetic composition of tiger sharks (Galeocerdo cuvier) and potential loss of a south-eastern Australia population Alice Manuzzi, Belen Jiménez-Mena, Romina Henriques, Bonnie J. Holmes, Julian Pepperell, Janette Edson, Mike B. Bennett, Charlie Huveneers, Jennifer R. Ovenden, Einar E. Nielsen ABSTRACT: Over the last century, many shark populations have declined, primarily
Acoustic discrimination in the grey bamboo shark
Acoustic discrimination in the grey bamboo shark Chiloscyllium griseum Tamar Poppelier, Jana Bonsberger, Boris Woody Berkhout, Reneé Pollmanns, Vera Schluessel ABSTRACT: Cognitive abilities of sharks are well developed and comparable to teleosts and other vertebrates. Most studies exploring elasmobranch cognitive abilities have used visual stimuli, assessing a wide range of discrimination tasks, memory retention and
Cookiecutter shark bite patterns on pelagic fishes
Cookiecutter shark (Isistius spp.) bite patterns on pelagic fishes in aggregated schools in the western equatorial Atlantic Ocean Rafael Menezes, João Paulo Dantas Marinho, Grazielly Campos de Mesquita, Guelson Batista da Silva ABSTRACT: Cookiecutter sharks are pelagic ectoparasites that feed on pieces of flesh from large marine animals. Knowledge on these sharks is still rather
Mitochondrial DNA Reveals Small-scale Population Structure in the California Horn Shark
Little Sharks in a Big World: Mitochondrial DNA Reveals Small-scale Population Structure in the California Horn Shark (Heterodontus francisci) Sean J Canfield, Felipe Galván-Magaña, Brian W Bowen ABSTRACT: The California horn shark (Heterodontus francisci) is a small demersal species distributed from southern California and the Channel Islands to Baja California and the Gulf of California.
Global shark species richness is more constrained by energy than evolutionary history
Global shark species richness is more constrained by energy than evolutionary history Emmaline R. Sheahan, Gavin J.P. Naylor, Daniel J. McGlinn ABSTRACT: Aim To examine the support of two ecological diversity theories- The Ecological Limits Hypothesis (ELH) and the Niche Conservatism Hypothesis (NCH) – in explaining patterns of global shark diversity. Location Global scale and
Heterodonty and ontogenetic shift dynamics in the dentition of the tiger shark
Heterodonty and ontogenetic shift dynamics in the dentition of the tiger shark Galeocerdo cuvier (Chondrichthyes, Galeocerdidae) Julia Türtscher, Patrick L. Jambura, Faviel A. López-Romero, René Kindlimann, Keiichi Sato, Taketeru Tomita, Jürgen Kriwet ABSTRACT: The lifelong tooth replacement in elasmobranch fishes (sharks, rays and skates) has led to the assemblage of a great number of teeth
Elasmobranch diversity across a remote coral reef atoll
Elasmobranch diversity across a remote coral reef atoll revealed through environmental DNA metabarcoding Nicholas Dunn, Vincent Savolainen, Sam Weber, Samantha Andrzejaczek, Chris Carbone, David Curnick ABSTRACT: As elasmobranchs are becoming increasingly threatened, efficient methods for monitoring the distribution and diversity of elasmobranch populations are required. Environmental DNA (eDNA) metabarcoding is a progressively applied technique that