Scientific Papers

DNA barcode reveals the illegal trade of rays in Brazil

DNA barcode reveals the illegal trade of rays in Brazil

DNA barcode reveals the illegal trade of rays commercialized in fishmongers in Brazil Raul B. Camacho-Oliveira, Cahique M. Daneluz, Fernanda D. do Prado, Ricardo Utsunomia, Carlos E. Rodrigues Jr., Fausto Foresti, Fábio Porto-Foresti ABSTRACT: Sequences of the mitochondrial gene COI (DNA Barcode) were used to identify species of rays and skates commercialized in fishmongers in

Evolutionary relationships among bullhead sharks

Evolutionary relationships among bullhead sharks

Evolutionary relationships among bullhead sharks (Chondrichthyes, Heterodontiformes) Tiffany S. Slater, Kate Ashbrook, Jürgen Kriwet ABSTRACT: The evolution of modern sharks, skates and rays (Elasmobranchii) is largely enigmatic due to their possession of a labile cartilaginous skeleton; consequently, taxonomic assignment often depends on isolated teeth. Bullhead sharks (Heterodontiformes) are a group of basal neoselachians, thus their

Bone‐strengthening effects and safety of compound peptides from skin of Chiloscyllium plagiosum and Mustelus griseus

Bone‐strengthening effects and safety of compound peptides from skin of Chiloscyllium plagiosum and Mustelus griseus

Bone‐strengthening effects and safety of compound peptides from skin of Chiloscyllium plagiosum and Mustelus griseus Xin‐Heng Xu, Peng‐Fei Lv, Tong‐Xin Wang, Bao‐Xuan Wang, Yan Shi, Bi‐Xue Wang, Zheng‐Rou Meng, Qing‐Xi Chen, Jiang‐Xing Zhuang, Yule‐Yue Wang Ph.D ABSTRACT: Fish processing produces a lot of by‐products highly containing large amount of proteins which mainly consist of collagen,

Shark fin trade bans and sustainable shark fisheries

Shark fin trade bans and sustainable shark fisheries

Shark fin trade bans and sustainable shark fisheries Francesco Ferretti, David M. P. Jacoby, Mariah O. Pfleger, Timothy D. White, Felix Dent, Fiorenza Micheli, Andrew A. Rosenberg, Larry B. Crowder, Barbara A. Block ABSTRACT: The U.S. Congress is currently discussing the Shark Fin Sales Elimination Act to eliminate shark fin trade at the federal level.

Elasmobranch species richness, fisheries, abundance and size composition in the Azores archipelago

Elasmobranch species richness, fisheries, abundance and size composition in the Azores archipelago

Elasmobranch species richness, fisheries, abundance and size composition in the Azores archipelago (NE Atlantic) Régis Santos, Ana Novoa-Pabon, Hélder Silva, Mário Pinho ABSTRACT: Elasmobranchs are a vulnerable resource, more susceptible to overfishing than most teleosts, and their assessment is complicated due to a general lack of information about their fisheries, biology and ecology. This study

Pliocene colonization of the Mediterranean by Great White Shark

Pliocene colonization of the Mediterranean by Great White Shark

Pliocene colonization of the Mediterranean by Great White Shark inferred from fossil records, historical jaws, phylogeographic and divergence time analyses Agostino Leone, Gregory N. Puncher, Francesco Ferretti, Emilio Sperone, Sandro Tripepi, Primo Micarelli, Andrea Gambarelli, Maurizio Sarà, Marco Arculeo, Giuliano Doria, Fulvio Garibaldi, Nicola Bressi, Andrea Dall’Asta, Daniela Minelli, Elisabetta Cilli, Stefano Vanni, Fabrizio Serena,

Fine-scale movement strategies of a non-obligate ram ventilator

Fine-scale movement strategies of a non-obligate ram ventilator

Active acoustic telemetry tracking and tri-axial accelerometers reveal fine-scale movement strategies of a non-obligate ram ventilator Meese E.N., Lowe C.G. ABSTRACT: Background California horn sharks (Heterodontus francisci) are nocturnally active, non-obligate ram ventilating sharks in rocky reef habitats that play an important ecological role in regulating invertebrate communities. We predicted horn sharks would use an

Shark-catch composition and seasonality in the data-poor small-scale fisheries of the southern Gulf of Mexico

Shark-catch composition and seasonality in the data-poor small-scale fisheries of the southern Gulf of Mexico

Shark-catch composition and seasonality in the data-poor small-scale fisheries of the southern Gulf of Mexico Juan Carlos Pérez-Jiménez, Armando Wakida-Kusunoki, Chrystian Hernández-Lazo, Manuel Mendoza-Carranza ABSTRACT: Regional ecological information is relevant to the international management of vulnerable species such as sharks. On the basis of monthly fishery data (2007–2010) from two small-scale multispecies fleets, namely, the

Shark and ray community structure in a turbid, nearshore coral reef habitat

Shark and ray community structure in a turbid, nearshore coral reef habitat

Shark and ray community structure in a turbid, nearshore coral reef habitat Arthur Yon, Mark G. Meekan, Samantha Andrzejaczek, Sarah Martinez, Conrad W. Speed ABSTRACT: The coastline of northern Australia may be a refuge for elasmobranchs threatened or extirpated from much of their former ranges across South-East Asia. In this study, we used baited remote

First observations of white sharks attacking a live humpback whale

First observations of white sharks attacking a live humpback whale

First observations of white sharks (Carcharodon carcharias) attacking a live humpback whale (Megaptera novaeangliae) Sasha Dines, Enrico Gennari ABSTRACT: To date, white shark (Carcharodon carcharias) feeding events involving large whales have largely been described only in terms of observed scavenging events. Scavenging occurs in all ecosystems and is usually associated with stochastic feeding events. In

Biological and population parameters of Tiger Shark landed in Tanjung Luar

Biological and population parameters of Tiger Shark landed in Tanjung Luar

Biological and population parameters of Tiger Shark Galeocerdo cuvier, landed in Tanjung Luar, West Nusa Tenggara Irwan Jatmiko, Suciadi Catur Nugroho ABSTRACT: Tiger shark is one of the important catch for small scale fisheries in West Nusa Tenggara. It is considered nearly threatened according the IUCN, thus information regarding to its estimated population is needed

Defining Sex-Specific Habitat Suitability for a Northern Gulf of Mexico Shark Assemblage

Defining Sex-Specific Habitat Suitability for a Northern Gulf of Mexico Shark Assemblage

Defining Sex-Specific Habitat Suitability for a Northern Gulf of Mexico Shark Assemblage J. M. Drymon, S. Dedman, J. T. Froeschke, E. A. Seubert, A. E. Jefferson, A. M. Kroetz, J. F. Mareska, S. P. Powers ABSTRACT: Understanding the factors that influence species’ distributions is crucial for implementing effective management and conservation practices, yet difficult for

First Record of the Longfin Mako Shark for Puerto Rico

First Record of the Longfin Mako Shark for Puerto Rico

First Confirmed Record of the Longfin Mako Shark (Isurus paucus) for Puerto Rico Mignucci-Giannoni AA, Cintrón-Nieves D, Franqui-Rivera G, Espinoza R, Orcera-Iglesias JM, Rivera-Ilarraza PJ, Rivera-Pérez CI, Rodríguez-Ferrer G. ABSTRACT: Isurus paucus (Longfin Mako) is a mesopelagic shark inhabiting tropical and subtropical waters. While records of Longfin Makos have been documented for the Western North

Performance of Two Survey Gears Targeting Elasmobranchs

Performance of Two Survey Gears Targeting Elasmobranchs

Performance of Two Survey Gears Targeting Elasmobranchs in a Shallow, Subtropical Estuary Grace Roskar, Michael P. McCallister, Matthew J. Ajemian ABSTRACT: Fishery‐independent surveys have become increasingly prevalent in recent decades for monitoring the population trends of highly mobile species like elasmobranchs (sharks and rays). Despite the utility of gear evaluations for streamlining costs and increasing

First study on age and growth of the deep-water Goblin Shark

First study on age and growth of the deep-water Goblin Shark

First study on age and growth of the deep-water Goblin Shark, Mitsukurina owstoni (Jordan, 1898) Fabio P. Caltabellotta, Zachary A. Siders, Gregor Cailliet, Fabio S. Motta, Otto B. F. Gadig ABSTRACT: Due to poorly mineralizing structures, ageing deep-water elasmobranchs requires nonconventional techniques. The aim of the present study was to develop a reliable ageing technique