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Genomic insights into the historical and contemporary demographics of the grey reef shark
Genomic insights into the historical and contemporary demographics of the grey reef shark Walsh CAJ, Momigliano P, Boussarie G, Robbins WD, Bonnin L, Fauvelot C, Kiszka JJ, Mouillot D, Vigliola L, Manel S ABSTRACT: Analyses of genetic diversity can shed light on both the origins of biodiversity hotspots, as well as the conservation status of
Drivers of at-vessel mortality of the blue shark and oceanic whitetip shark
Drivers of at-vessel mortality of the blue shark (Prionace glauca) and oceanic whitetip shark (Carcharhinus longimanus) assessed from monitored pelagic longline experiments Yoluène Massey, M.Sc., Philippe S. Sabarros, and Pascal Bach ABSTRACT: Elasmobranchs make up a significant part of bycatch in pelagic longline fisheries, whose induced mortality can be a major threat to endangered species.
Marine-climate interactions with the blue shark catches in the western coast of Baja California
Marine-climate interactions with the blue shark (Prionace glauca) catches in the western coast of Baja California Peninsula, Mexico Carlos Javier Godínez-Padilla, José Leonardo Castillo-Géniz, Benigno Hernández de la Torre, Luis Vicente González-Ania, Marlon H. Román-Verdesoto ABSTRACT: Fishery and size data by sex of 28,110 blue sharks (Prionace glauca) from 2162 longline sets documented by observers
Occurrence and population structure of sharks in two ecologically or biologically significant marine areas off north-eastern Brazil
Occurrence and population structure of sharks in two ecologically or biologically significant marine areas off north-eastern Brazil Laís R. Barcellos, Rodrigo Barreto, Rosângela PT Lessa ABSTRACT: Ecologically or Biologically Significant Marine Areas (EBSAs) are rare, and highly important sites to the life history of a number of declining shark species are endangered by fishing. The
Age and Growth of the Spot-Tail Shark in the Taiwan Strait
Age and Growth of the Spot-Tail Shark, Carcharhinus sorrah, in the Taiwan Strait Joung S-J, Hsu Z-Y, Su K-Y, Liu K-M. ABSTRACT: The age and growth of the spot-tail shark, Carcharhinus sorrah, were estimated based on 327 specimens (171 females and 156 males) captured by the coastal/offshore longline or drift net fishery in the waters
Fisheries bycatch and conservation priorities of young sharks in the Eastern Mediterranean
Fisheries bycatch and conservation priorities of young sharks (Chondrichthyes: Elasmobranchii) in the Eastern Mediterranean Deniz Erguden, Hakan Kabasakal & Deniz Ayas ABSTRACT: Sharks are one of the most threatened groups of marine animals because of high exploitation rates coupled with low resilience to fishing pressure. We provide information on the current status of the young
Energy conservation characterizes sleep in sharks
Energy conservation characterizes sleep in sharks Michael L. Kelly, Selwyn P. Collins, John A. Lesku, Jan M. Hemmi, Shaun P. Collin, Craig A. Radford ABSTRACT: Sharks represent the earliest group of jawed vertebrates and as such, they may provide original insight for understanding the evolution of sleep in more derived animals. Unfortunately, beyond a single
DNA-Based Species Identification of Shark Fins Traded in Thai Markets
DNA-Based Species Identification of Shark Fins Traded in Thai Markets Wanlada Klangnurak, Sirachai Arunrugstichai, Petch Manopawitr, Tassapon Krajangdara ABSTRACT: Shark fins are among the most highly prized seafood products in the world with massive consumption in Asia over the past several decades. The demand for shark fins is a major driver of the enormous population
Revisiting body size trends and nursery areas of the Neogene megatooth shark
Revisiting body size trends and nursery areas of the Neogene megatooth shark, Otodus megalodon (Lamniformes: Otodontidae), reveals Bergmann’s rule possibly enhanced its gigantism in cooler waters Kenshu Shimada, Harry M. Maisch IV, Victor J. Perez, Martin A. Becker & Michael L. Griffiths ABSTRACT: The late Neogene megatooth shark, Otodus megalodon, is known mainly from its
Swimming kinematics of the Caribbean reef shark
Swimming kinematics of the Caribbean reef shark, Carcharhinus perezi Stephen M. Kajiura, John C. Loyer, Cassandra Ruddy, Marianne E. Porter ABSTRACT: The Caribbean reef shark, Carcharhinus perezi, is known to rest on the substrate, a behavior not documented in any of its congeners. We quantified swimming kinematics of C. perezi in the wild and found
Microbiome structure in large pelagic sharks with distinct feeding ecologies
Microbiome structure in large pelagic sharks with distinct feeding ecologies Pratte ZA, Perry C, Dove ADM, Hoopes LA, Ritchie KB, Hueter RE, Fischer C, Newton AL, Stewart FJ. ABSTRACT: Background: Sharks play essential roles in ocean food webs and human culture, but also face population declines worldwide due to human activity. The relationship between sharks
DNA Barcoding Identifies Endangered Sharks in Pet Food Sold in Singapore
DNA Barcoding Identifies Endangered Sharks in Pet Food Sold in Singapore Ian French, Benjamin J. Wainwright ABSTRACT: Shark populations have declined by more than 70% over the past 50 years. These declines have largely been attributed to increases in fishing efforts. Despite increased public awareness surrounding the conservation of sharks, three-quarters of all oceanic shark
Combined phylogeny and new classification of catsharks
Combined phylogeny and new classification of catsharks (Chondrichthyes: Elasmobranchii: Carcharhiniformes) Karla D A Soares, Kleber Mathubara ABSTRACT: This is the first study to combine morphological and molecular characters to infer the phylogenetic relationships among catsharks. All currently valid genera classified in the family Scyliorhinidae s.l. and representatives of other carcharhinoid families plus one lamnoid and
Five-Month Incubation of Viviparous Deep-Water Shark Embryos in Artificial Uterine Fluid
Five-Month Incubation of Viviparous Deep-Water Shark Embryos in Artificial Uterine Fluid Tomita Taketeru, Toda Minoru, Murakumo Kiyomi, Kaneko Atsushi, Yano Nagisa, Nakamura Masaru, Sato Keiichi ABSTRACT: In this study, we developed an extra-uterine life-support system (artificial uterus) for viviparous elasmobranchs. Using this system, we maintained two embryonic specimens of the slendertail lantern shark (Etmopterus molleri)
A mitochondrial genome assembly of the opal chimaera
A mitochondrial genome assembly of the opal chimaera, Chimaera opalescens Luchetti, Iglésias et Sellos 2011, using PacBio HiFi long reads Nair Vilas-Arrondo, André Gomes-dos-Santos, Montse Pérez, Francisco Baldó, Ana Veríssimo, Diana Catarino, André M. Machado, Esther Román-Marcote, Rafael Bañón, Elsa Froufe & L. Filipe C. Castro ABSTRACT: Chondrichthyans (sharks, rays and chimeras) are a fascinating