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Horizontal and vertical movements of immature dusky sharks
Horizontal and vertical movements of immature dusky sharks Carcharhinus obscurus in relation to commercial longline fisheries in the western North Atlantic Ocean Kroetz, A.M., Gulak, S.J.B. & Carlson, J.K. ABSTRACT: BackgroundMany species of sharks, including the dusky shark Carcharhinus obscurus, are often incidentally captured in commercial pelagic and bottom longline fisheries. Incidental capture can lead
Suspected predatory bites on a snorkeler by an oceanic whitetip shark off Moorea island
Suspected predatory bites on a snorkeler by an oceanic whitetip shark Carcharhinus longimanus off Moorea island (French Polynesia) Eric E. G. Clua DVM, PhD, Simon Demarchi MSc, Carl G. Meyer PhD ABSTRACT: Understanding why sharks bite humans is essential for developing strategies to prevent these incidents. Here, we use bite wound characteristics and eye witness
The whale shark genome reveals patterns of vertebrate gene family evolution
The whale shark genome reveals patterns of vertebrate gene family evolution Milton Tan, Anthony K Redmond, Helen Dooley, Ryo Nozu, Keiichi Sato, Shigehiro Kuraku, Sergey Koren, Adam M Phillippy, Alistair DM Dove, Timothy Read ABSTRACT: Chondrichthyes (cartilaginous fishes) are fundamental for understanding vertebrate evolution, yet their genomes are understudied. We report long-read sequencing of the
Complete mitochondrial genome of the Caribbean reef shark
Complete mitochondrial genome of the Caribbean reef shark, Carcharhinus perezi (Carcharhinformes: Carcharhinidae) Austin J. Gallagher, Oliver N. Shipley, Bo Reese & Vijender Singh ABSTRACT: The Caribbean reef shark (Carcharhinus perezi; Poey, 1876) is a medium to large-bodied coastal and reef-associated predator found throughout the subtropical and tropical waters of the Atlantic Ocean and Caribbean Sea,
Sharks, Lies, and Videotape: A content analysis of 32 years of Shark Week documentaries
Sharks, Lies, and Videotape: A content analysis of 32 years of Shark Week documentaries Lisa B. Whitenack, Brady L. Mickley, Julia Saltzman, Stephen M. Kajiura, Catherine C. Macdonald, David S. Shiffman ABSTRACT: Despite evidence of their importance to marine ecosystems, at least 25% of all chondrichthyan species are estimated or assessed as threatened with extinction.
The role and value of science in shark conservation advocacy
The role and value of science in shark conservation advocacy David S Shiffman, Catherine C Macdonald, S Scott Wallace, Nicholas K Dulvy ABSTRACT: Many species of sharks are threatened with extinction, and there has been a longstanding debate in scientific and environmental circles over the most effective and appropriate strategy to conserve and protect them.
Diet of the Silky Shark off Côte d’Ivoire
Diet of the Silky Shark Carcharhinus falciformis (Müller & Henle, 1839) in Waters off Côte d’Ivoire (West Africa) Koua Clément N’Gouan, Kouadio Justin Konan, Oi Edia Edia ABSTRACT: Aims: This study was to establish the feeding habits of silky shark Carcharhinus falciformis in waters off Côte d’Ivoire. Study design: All stomachs of the specimens were
Movements and residency of Caribbean reef sharks at a remote atoll in Belize
Movements and residency of Caribbean reef sharks at a remote atoll in Belize, Central America Ivy E. Baremore, Rachel T. Graham, George H. Burgess, Daniel W. Castellanos ABSTRACT: We investigated spatial use patterns of 77 Caribbean reef sharks (Carcharhinus perezi) at Lighthouse Reef Atoll, Belize over 7 years using residency patterns, kernel density (KD) estimation
Tooth morphology elucidates shark evolution across the end-Cretaceous mass extinction
Tooth morphology elucidates shark evolution across the end-Cretaceous mass extinction Mohamad Bazzi, Nicolás E. Campione, Per E. Ahlberg, Henning Blom, Benjamin P. Kear ABSTRACT: Sharks (Selachimorpha) are iconic marine predators that have survived multiple mass extinctions over geologic time. Their prolific fossil record is represented mainly by isolated shed teeth, which provide the basis for
Stable Isotope Analysis of Juvenile White Sharks Inside a Nursery Area
Stable Isotope Analysis of Juvenile White Sharks Inside a Nursery Area Reveals Foraging in Demersal-Inshore Habitats and Trophic Overlap With Sympatric Sharks Emiliano García-Rodríguez, Sharon Z. Herzka, Oscar Sosa-Nishizaki, Christopher G. Lowe, John B. O’Sullivan ABSTRACT: Knowledge about top predators’ trophic ecology is crucial for defining their role in ecosystems, understanding habitat preferences, characterizing life
Genomic assessment of global population structure in the tiger shark
Genomic assessment of global population structure in a highly migratory and habitat versatile apex predator, the tiger shark (Galeocerdo cuvier) Andrea M Bernard, Kimberly A Finnegan, Paulina Pavinski Bitar, Michael J Stanhope, Mahmood S Shivji ABSTRACT: Understanding the population dynamics of highly mobile, widely distributed, oceanic sharks, many of which are overexploited, is necessary to
Conservation Status of Shark Landed in Pangandaran Regency
Conservation Status of Shark Landed in Local Fish Market in Pangandaran Regency, Indonesia Rega Permana, Nursaidah, Ihda Abdul Hadi, Idham Rinaldi ABSTRACT: Pangandaran has a great fishery potential. Therefore, fishing communities make fisheries a source of economy, especially in the fishing sector, namely by buying and selling the catch. Fish buying and selling activities are
Morphological, cytochemical and ultrastructural aspects of blood cells in freshwater stingray species in the middle Rio Negro basin of Amazonian Brazil
Morphological, cytochemical and ultrastructural aspects of blood cells in freshwater stingray species in the middle Rio Negro basin of Amazonian Brazil Adriano Teixeira de Oliveira, Jefferson Raphael Gonzaga de Lemos, Marcio Quara de Carvalho Santos, Jackson Pantoja-Lima, Paulo Henrique Rocha Aride, Maria Lúcia Góes de Araújo, Marcos Tavares-Dias & Jaydione Luiz Marcon ABSTRACT: In the
Sexual conflicts in sand tiger sharks in an artificial environment
Sexual conflicts in sand tiger sharks Carcharias taurus (Rafinesque, 1810) in an artificial environment Claus, E., Henningsen, A., Wetherbee, B., & Shivji, M. ABSTRACT: Understanding reproductive behaviours and the environmental conditions that facilitate reproduction is important for successful reproduction in managed care. Complex reproductive behaviours have been observed in both aquarium and free-ranging elasmobranchs. Sexual
Movements, Habitat Use, and Diving Behavior of Shortfin Mako in the Atlantic Ocean
Movements, Habitat Use, and Diving Behavior of Shortfin Mako in the Atlantic Ocean Catarina C. Santos, Andrés Domingo, John Carlson, Lisa J. Natanson, Paulo Travassos, David Macías, Enric Cortés, Philip Miller, Fábio Hazin, Federico Mas, Josetxu Ortiz de Urbina, Pedro G. Lino, Rui Coelho ABSTRACT: The shortfin mako is one of the most important shark