Scientific Papers

The catshark genus Scyliorhinus

The catshark genus Scyliorhinus

The catshark genus Scyliorhinus (Chondrichthyes: Carcharhiniformes: Scyliorhinidae): taxonomy, morphology and distribution KARLA D. A. SOARES, MARCELO R. DE CARVALHO ABSTRACT: The catshark genus Scyliorhinus belongs to the family Scyliorhinidae, the most diverse family of sharks, and currently presents 16 valid species according to most modern accounts. The long history of taxonomic rearrangements and inaccurate descriptions

Genetic population structure and demography of the tiger shark

Genetic population structure and demography of the tiger shark

Genetic population structure and demography of an apex predator, the tiger shark Galeocerdo cuvier Agathe Pirog, Sébastien Jaquemet, Virginie Ravigné, Geremy Cliff, Eric Clua, Bonnie J. Holmes, Nigel E. Hussey, John E. G. Nevill, Andrew J. Temple, Per Berggren, Laurent Vigliola, Hélène Magalon ABSTRACT: Population genetics has been increasingly applied to study large sharks over

Angling records track the near extirpation of angel shark from two Irish hotspots

Angling records track the near extirpation of angel shark from two Irish hotspots

Angling records track the near extirpation of angel shark Squatina squatina from two Irish hotspots Samuel Shephard, Ciara Wögerbauer, Peter Green, Jim R. Ellis, William K. Roche ABSTRACT: The angel shark Squatina squatina was historically common in coastal waters fromthe British Isles to north-western Africa, including the Mediterranean. Reported commercial land-ings from northern Europe reduced

Non‐trophic impacts from white sharks complicate population recovery for sea otters

Non‐trophic impacts from white sharks complicate population recovery for sea otters

Non‐trophic impacts from white sharks complicate population recovery for sea otters Jerry H. Moxley, Teri E. Nicholson, Kyle S. Van Houtan, Salvador J. Jorgensen ABSTRACT: Complex interactions between protected populations may challenge the recovery of whole ecosystems. In California, white sharks (Carcharodon carcharias) mistargeting southern sea otters (Enhydra lutris nereis) are an emergent impact to

Predicting the conservation status of Europe’s Data Deficient sharks and rays

Predicting the conservation status of Europe’s Data Deficient sharks and rays

Predicting the conservation status of Europe’s Data Deficient sharks and rays Rachel H.L. Walls, Nicholas K. Dulvy ABSTRACT: Shark and ray biodiversity is threatened primarily by overfishing and the globalisation of trade, and Europe has been one of the most documented heavily fished regions for a relatively long time. Yet, we have little idea of

Velvet belly lanternshark does not use bacterial luminescence

Velvet belly lanternshark does not use bacterial luminescence

Etmopterus spinax, the velvet belly lanternshark, does not use bacterial luminescence Laurent Duchatelet, Jérôme Delroisse, Patrick Flammang, Jacques Mahillon, Jérôme Mallefet ABSTRACT: Marine organisms are able to produce light using either their own luminous system, called intrinsic bioluminescence, or symbiotic luminous bacteria, called extrinsic bioluminescence. Among bioluminescent vertebrates, Osteichthyes are known to harbor both types

Female sand tiger sharks exhibit signs of site fidelity on shipwrecks

Female sand tiger sharks exhibit signs of site fidelity on shipwrecks

Citizen science reveals female sand tiger sharks (Carcharias taurus) exhibit signs of site fidelity on shipwrecks Avery B. Paxton, Erica Blair, Camryn Blawas, Michael H. Fatzinger, Madeline Marens, Jason Holmberg, Colin Kingen, Tanya Houppermans, Mark Keusenkothen, John McCord, Brian R. Silliman, Linda M. Penfold Ecological Society of America, Ecology 00(00):e02687, DOI 10.1002/ecy.2687 SOURCE

Behavioural analysis of manta ray tourists in Eastern Indonesia

Behavioural analysis of manta ray tourists in Eastern Indonesia

Behavioural analysis of manta ray tourists in Eastern Indonesia M S Hani, J Jompa, M N Nessa, A T White ABSTRACT: Indonesia has several manta ray aggregation sites, including Nusa Penida, Komodo, and Raja Ampat. The popularity of manta ray watching tourism has attracted tourists to Indonesia from around the world. Understanding tourist behaviour is

Cryptic habitat use of white sharks in kelp forest

Cryptic habitat use of white sharks in kelp forest

Cryptic habitat use of white sharks in kelp forest revealed by animal-borne video Oliver J. D. Jewell, Adrian C. Gleiss, Salvador J. Jorgensen, Samantha Andrzejaczek, Jerry H. Moxley, Stephen J. Beatty, Martin Wikelski, Barbara A. Block, Taylor K. Chapple ABSTRACT: Traditional forms of marine wildlife research are often restricted to coarse telemetry or surface-based observations,

Hybridization between sympatric hammerhead sharks in the western North Atlantic Ocean

Hybridization between sympatric hammerhead sharks in the western North Atlantic Ocean

Hybridization between sympatric hammerhead sharks in the western North Atlantic Ocean Amanda M. Barker, Douglas H. Adams, William B. Driggers, Bryan S. Frazier, David S. Portnoy ABSTRACT: Hybridization between closely related species has been documented across a wide range of taxa but has not been well studied in elasmobranchs. Hammerhead sharks have drawn global conservation

Official catch data underrepresent shark and ray taxa caught in Mediterranean Sea

Official catch data underrepresent shark and ray taxa caught in Mediterranean Sea

Official catch data underrepresent shark and ray taxa caught in Mediterranean and Black Sea fisheries Madeline S. Cashion, Nicolas Bailly, Daniel Pauly ABSTRACT: One in four fishes of the subclass Elasmobranchii (sharks and rays) is estimated to be threatened with extinction, according to the IUCN Red List. Their primary threat is overfishing, but data deficiency

Trophic partitioning between sharks coexisting in the North Aegean Sea

Trophic partitioning between sharks coexisting in the North Aegean Sea

Trophic partitioning between abundant demersal sharks coexisting in the North Aegean Sea Emre Yemisken, Joan Navarro, Manuela Forero, Persefoni Megalofonou, Lutfiye Eryilmaz ABSTRACT: We examined the feeding ecology (diet, trophic width and trophic position) of five demersal shark species (Mustelus mustelus Linnaeus, 1758, Galeus melastomus Rafinesque, 1810, Scyliorhinus canicula Linnaeus, 1758, Scyliorhinus stellaris Linnaeus, 1758,

Sharks in the southern South China Sea

Sharks in the southern South China Sea

Diversity, occurrence and conservation of sharks in the southern South China Sea Takaomi Arai, Azie Azri ABSTRACT: Sharks constitute a vital sector of marine and estuarine nekton and are of great commercial importance all over the world. International concern over the fate of shark fisheries has grown recently. However, information concerning the species diversity, geographic

Shape analysis of shark jaws as a tool to identify species involved in incidents with humans

Shape analysis of shark jaws as a tool to identify species involved in incidents with humans

Shape analysis of shark jaws as a tool to identify species involved in incidents with humans Duarte-Neto P, Rodrigues J, Lessa R ABSTRACT: Shark incidents in Recife, Pernambuco state (Brazil), are registered since 1992. The occurrence of those events is in a relatively small area of urban beaches of about 30 km long, making up one

Heavy metal accumulation in and food safety of shark meat from Jeju island

Heavy metal accumulation in and food safety of shark meat from Jeju island

Heavy metal accumulation in and food safety of shark meat from Jeju island, Republic of Korea Sang Wha Kim, Se Jin Han, Yonggab Kim, Jin Woo Jun, Sib Sankar Giri, Cheng Chi, Saekil Yun, Hyoun Joong Kim, Sang Guen Kim, Jeong Woo Kang, Jun Kwon, Woo Taek Oh, Jehyun Cha, Seunghee Han, Byeong Chun Lee,