Scientific Papers

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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...

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...

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...

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...

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...

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...

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...

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...

Cutting blade dentitions in squaliform sharks form by modification of inherited alternate tooth ordering patterns

Cutting blade dentitions in squaliform sharks form by modification of inherited alternate tooth ordering patterns

Published on 30. November 2016 Cutting blade dentitions in squaliform sharks form by modification of inherited alternate tooth ordering patterns Charlie Underwood, Zerina Johanson, Moya Meredith Smith ABSTRACT: The squaliform sharks represent one of the most speciose shark clades. Many adult squaliforms have blade-like teeth, either on both jaws or restricted to the lower...

Using unmanned aerial vehicles to investigate shark and ray densities in a shallow coral lagoon

Using unmanned aerial vehicles to investigate shark and ray densities in a shallow coral lagoon

Published on 24. November 2016 Using unmanned aerial vehicles (UAVs) to investigate shark and ray densities in a shallow coral lagoon Jeremy J. Kiszka, Johann Mourier, Kirk Gastrich, Michael R. Heithaus ABSTRACT: Unmanned aerial vehicles (UAVs) are being increasingly used in studies of marine fauna. Here, we tested the use of a UAV (DJI...

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