Scientific Papers

Page 5 of 70« First...34567...102030...Last »

Bioaccumulation and biomagnification of mercury and methylmercury in four sympatric coastal sharks

Bioaccumulation and biomagnification of mercury and methylmercury in four sympatric coastal sharks

Published online on 20 January 2017 Bioaccumulation and biomagnification of mercury and methylmercury in four sympatric coastal sharks in a protected subtropical lagoon Adam G. Matulik, David W. Kerstetter, Neil Hammerschlag, Timothy Divoll, Chad R. Hammerschmidt, David C. Evers ABSTRACT: Mercury bioaccumulation is frequently observed in marine ecosystems, often with stronger effects at higher trophic

Switch from sexual to parthenogenetic reproduction in a zebra shark

Switch from sexual to parthenogenetic reproduction in a zebra shark

Published on 16 January 2017 Switch from sexual to parthenogenetic reproduction in a zebra shark Christine L. Dudgeon, Laura Coulton, Ren Bone, Jennifer R. Ovenden, Severine Thomas ABSTRACT: Parthenogenesis is a natural form of asexual reproduction in which embryos develop in the absence of fertilisation. Most commonly found in plants and invertebrate organisms, an increasing

Plastic debris straps on threatened blue shark

Plastic debris straps on threatened blue shark

Published online on 12 January 2017 Plastic debris straps on threatened blue shark Prionace glauca Ana I. Colmenero, Claudio Barría, Elisabetta Broglio, Salvador García-Barcelona ABSTRACT: Juveniles of blue shark Prionace glauca caught in pelagic longlines targeting tuna and swordfish in the Atlantic Ocean and the Mediterranean Sea were found entangled with plastic straps around their

First record of the chimaera Neoharriota carri in the Caribbean of Guatemala

First record of the chimaera Neoharriota carri in the Caribbean of Guatemala

Published on 3rd January 2017 First record of the chimaera Neoharriota carri (Bullis and Carpenter 1966) in the Caribbean of Guatemala Francisco Polanco-Vásquez, Ana Hacohen-Domené, Thalya Méndez, Alerick Pacay and Rachel T. Graham ABSTRACT: Background A new record of Neoharriota carri is here reported for the Caribbean of Guatemala. Results Two chimaeras, a male and

Population structure and aspects of the reproductive biology of the blackmouth catshark caught accidentally off the Greek coasts

Population structure and aspects of the reproductive biology of the blackmouth catshark caught accidentally off the Greek coasts

Published online on 28. December 2016 Population structure and aspects of the reproductive biology of the blackmouth catshark, Galeus melastomus Rafinesque, 1810 (Chondrichthyes: Scyliorhinidae) caught accidentally off the Greek coasts Christoforos Panicos Metochis, Greta Carmona-Antoñanzas, Vasiliki Kousteni, Dimitrios Damalas, Persefoni Megalofonou ABSTRACT: The population composition and aspects of the reproductive biology of 452 blackmouth catsharks,

Technical mitigation measures for sharks and rays in fisheries for tuna and tuna-like species

Technical mitigation measures for sharks and rays in fisheries for tuna and tuna-like species

Published online on 21. December 2016 Technical mitigation measures for sharks and rays in fisheries for tuna and tuna-like species: turning possibility into reality François Poisson, Francisco Abascal Crespo, Jim R. Ellis, Pierre Chavance, Bach Pascal, Miguel. N. Santos, Bernard Séret, Maria Korta, Rui Coelho, Javier Ariz, Hilario Murua ABSTRACT: Tuna fisheries have been identified

Role of the preferred habitat availability for small shark on the interannual variation of abundance in a large Southwest Atlantic Coastal System

Role of the preferred habitat availability for small shark on the interannual variation of abundance in a large Southwest Atlantic Coastal System

Published online on 09 December 2016 Role of the preferred habitat availability for small shark (Mustelus schmitti) on the interannual variation of abundance in a large Southwest Atlantic Coastal System (El Rincón, 39°–41°S) A.J. Jaureguizar, R. Wiff, M. Luz Clara ABSTRACT: Description of habitat preferences in marine fishes is important in order to understand their

First report of the whitesaddled catshark in Guatemala’s Caribbean Sea

First report of the whitesaddled catshark in Guatemala’s Caribbean Sea

Published on 09. December 2016 First report of the whitesaddled catshark Scyliorhinus hesperius (Springer 1966) in Guatemala’s Caribbean Sea Ana Hacohen-Domené, Francisco Polanco-Vásquez, Rachel T. Graham ABSTRACT: Background The present study represents the first record of Scyliorhinus hesperius in Guatemala’s Caribbean Sea. Methods Five male whitesaddled catsharks, S. hesperius, were captured in 200 m deep

Dietary Keratan Sulfate from Shark Cartilage Modulates Gut Microbiota

Dietary Keratan Sulfate from Shark Cartilage Modulates Gut Microbiota

Published on 08. December 2016 Dietary Keratan Sulfate from Shark Cartilage Modulates Gut Microbiota and Increases the Abundance of Lactobacillus spp. Qingsen Shang, Qinying Li, Meifang Zhang, Guanrui Song, Jingjing Shi, Hao Jiang, Chao Cai, Jiejie Hao, Guoyun Li, Guangli Yu ABSTRACT: Keratan sulfate (KS) represents an important family of glycosaminoglycans that are critical in

Molecular diversity and distribution of eastern Atlantic and Mediterranean dogfishes highlight taxonomic issues in the genus

Molecular diversity and distribution of eastern Atlantic and Mediterranean dogfishes highlight taxonomic issues in the genus

Published on 02. December 2016 Molecular diversity and distribution of eastern Atlantic and Mediterranean dogfishes Squalus highlight taxonomic issues in the genus Ana Veríssimo, Diana Zaera-Perez, Rob Leslie, Samuel P. Iglésias, Bernard Séret, Panagiotis Grigoriou, Aspasia Sterioti, Chrysoula Gubili, Claudio Barría, Clinton Duffy, Sebastián Hernández, Ioannis E. Batjakas, Andrew M. Griffiths ABSTRACT: The alpha taxonomy

Feeding ecology of silky sharks associated with floating objects

Feeding ecology of silky sharks associated with floating objects

Published online on 14. December 2016 Feeding ecology of silky sharks Carcharhinus falciformis associated with floating objects in the western Indian Ocean Filmalter, J. D., Cowley, P. D., Potier, M., Ménard, F., Smale, M. J., Cherel, Y. and Dagorn, L. ABSTRACT: The silky shark Carcharhinus falciformis is commonly associated with floating objects, including fish aggregating

Sharks shift their spine into high gear

Sharks shift their spine into high gear

Published online on 14. December 2016 Biomaterials: Sharks shift their spine into high gear Matthew A. Kolmann, Adam P. Summers ABSTRACT: It emerges that a dogfish shark’s spine becomes stiffer as the fish swims faster, enabling the animal to swim efficiently at different speeds. The finding could also provide inspiration for the design of robotic

Do White Shark Bites on Surfers Reflect Their Attack Strategies on Pinnipeds?

Do White Shark Bites on Surfers Reflect Their Attack Strategies on Pinnipeds?

Do White Shark Bites on Surfers Reflect Their Attack Strategies on Pinnipeds? Erich Ritter and Alexandra Quester ABSTRACT: The theory of mistaken identity states that sharks, especially white sharks, Carcharodon carcharias, mistake surfers for pinnipeds when looking at them from below and thus bite them erroneously. Photographs of surfer wounds and board damage were interpreted

Predicting occurrence of juvenile shark habitat to improve conservation planning

Predicting occurrence of juvenile shark habitat to improve conservation planning

Published on 30. November 2016 Predicting occurrence of juvenile shark habitat to improve conservation planning Beverly Z.L. Oh, Ana M.M. Sequeira, Mark G. Meekan, Jonathan L.W. Ruppert, Jessica J. Meeuwig ABSTRACT: Fishing and habitat degradation have increased the extinction risk of sharks, and conservation strategies recognize that survival of juveniles is critical for the effective

Dental ontogeny of a white shark embryo

Dental ontogeny of a white shark embryo

Published on 27. November 2016 Dental ontogeny of a white shark embryo Taketeru Tomita, Kei Miyamoto, Akira Kawaguchi, Minoru Toda, Shin-Ichiro Oka, Ryo Nozu, Keiichi Sato ABSTRACT: Unlike most viviparous vertebrates, lamniform sharks develop functional teeth during early gestation. This feature is considered to be related to their unique reproductive mode where the embryo grows

Page 5 of 70« First...34567...102030...Last »