Market incentives for shark fisheries

Market incentives for shark fisheries Ruth Beatriz Mezzalira Pincinato, Maria A.Gasalla, Taryn Garlock, James L. Anderson ABSTRACT: Fishers tend to prioritize landings of the most valuable product to better utilize vessel capacity. This may lead to discards of catches that are economically undesirable or legally prohibited. The high-value of shark fins and the low-value of

The need for long-term population monitoring of the world’s largest fish

The need for long-term population monitoring of the world’s largest fish Rohner CA, Venables SK, Cochran JEM, Prebble CEM, Kuguru BL, Berumen ML, Pierce SJ ABSTRACT: Many large marine species are vulnerable to anthropogenic pressures, and substantial declines have been documented across a range of taxa. Many of these species are also long-lived, have low

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

New WA-made device added to Shark Deterrent Rebate scheme

Media Statement Hon Don Punch BPsych BSocwk MBA MLAMinister for Disability Services; Fisheries; Seniors and Ageing; Small Business Wednesday, 16 March 2022 — — — — $200 rebate to be extended to scientifically proven, locally made Rpela v2 surf device More than 7,000 rebates already claimed for personal shark deterrent devices McGowan Government investing in

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

Video: Critically endangered sawfish caught off Karnataka coast, India

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