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

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

Emergent research and priorities for shark and ray conservation

Emergent research and priorities for shark and ray conservation Jorgensen SJ, Micheli F, White TD, Van Houtan KS and others ABSTRACT: Over the past 4 decades there has been a growing concern for the conservation status of elasmobranchs (sharks and rays). In 2002, the first elasmobranch species were added to Appendix II of the Convention

Reproductive biology of the Whitespotted eagle ray

Reproductive biology of the Whitespotted eagle ray Aetobatus narinari (Myliobatiformes) captured in the Coast of Paraíba and Pernambuco, Brazil Priscila R V Araújo, Maria C Oddone, Joaquim Evêncio-Neto, Rosangela Lessa ABSTRACT: The present study analysed aspects of reproductive biology based on macroscopic and microscopic structures of Whitespotted eagle ray Aetobatus narinari captured by artisanal fishing

Behavioural Changes and Physiological Adjustments of Elasmobranchs to Ocean Acidification

A Systematic Review of the Behavioural Changes and Physiological Adjustments of Elasmobranchs and Teleost’s to Ocean Acidification with a Focus on Sharks Ziv Zemah-Shamir, Shiri Zemah-Shamir, Aviad Scheinin, Dan Tchernov, Teddy Lazebnik, Gideon Gal ABSTRACT: In recent years, much attention has been focused on the impact of climate change, particularly via ocean acidification (OA), on