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Age, growth and reproductive biology of Trygonorrhina fasciata and Dentiraja australis
Age, growth and reproductive biology of two endemic demersal bycatch elasmobranchs: Trygonorrhina fasciata and Dentiraja australis (Chondrichthyes: Rhinopristiformes, Rajiformes) from Eastern Australia Marcelo Reis, Will F. Figueira ABSTRACT: Bottom-dwelling elasmobranchs, such as guitarfishes, skates and stingrays are highly susceptible species to bycatch due to the overlap between their distribution and area of fishing operations. Catch
Effective number of white shark breeders is stable over four successive years in the population adjacent to eastern Australia and New Zealand
Effective number of white shark (Carcharodon carcharias, Linnaeus) breeders is stable over four successive years in the population adjacent to eastern Australia and New Zealand Danielle Davenport, Paul Butcher, Sara Andreotti, Conrad Matthee, Andrew Jones, Jennifer Ovenden ABSTRACT: Population size is a central parameter for conservation; however, monitoring abundance is often problematic for threatened marine
Repeatability of baited remote underwater video station (BRUVS) results within and between seasons
Repeatability of baited remote underwater video station (BRUVS) results within and between seasons C. Samantha Sherman, Michelle R. Heupel, Mohini Johnson, Muslimin Kaimuddin, L. M. Sjamsul Qamar, Andrew Chin, Colin A. Simpfendorfer ABSTRACT: Baited remote underwater video stations (BRUVS) are increasingly being used to evaluate and monitor reef communities. Many BRUVS studies compare multiple sites
Variable response to electric shark deterrents in bull sharks
Variable response to electric shark deterrents in bullsharks, Carcharhinus leucas A Gauthier, E Chateauminois, M Hoarau, J Gadenne, E Hoarau, Sébastien Jaquemet, S Whitmarsh, C Huveneers ABSTRACT: Although relatively rare, human-shark interactions and sharks bites are increasing globally, which has led to the development of various mitigation measures. Electric shark deterrents (ESDs) have, so far,
Disentangling the shark and ray trade in Indonesia to reconcile conservation with food security
Disentangling the shark and ray trade in Indonesia to reconcile conservation with food security Andhika P. Prasetyo, Allan D. McDevitt, Joanna M. Murray, Jon Barry, Firdaus Agung, Efin Muttaqin, Stefano Mariani ABSTRACT: Indonesian marine resources are among the richest on the planet, sustaining highly diverse fisheries and includes the largest elasmobranch landings in the world,
Distribution and abundance of large pelagic species at Cocos Ridge seamounts
A first assessment of the distribution and abundance of large pelagic species at Cocos Ridge seamounts (Eastern Tropical Pacific) using drifting pelagic baited remote cameras Marta Cambra, Frida Lara-Lizardi, Cesar Peñaherrera, Alex Hearn, James T. Ketchum, Patricia Zarate, Carlos Chacón, Jenifer Suárez-Moncada, Esteban Herrera, Mario Espinoza ABSTRACT: Understanding the link between seamounts and large pelagic
Effects of monofilament nylon versus braided multifilament nylon gangions on catch rates of Greenland shark
Effects of monofilament nylon versus braided multifilament nylon gangions on catch rates of Greenland shark (Somniosus microcephalus) in bottom set longlines Scott M. Grant, Jenna G. Munden, Kevin J. Hedges ABSTRACT: The Greenland shark (Somniosus microcephalus) is the main bycatch species in established and exploratory inshore longline fisheries for Greenland halibut (Reinhardtius hippoglossoides) on the
Relationship between the biomass of reef shark and fish in South Morotai
Relationship between the biomass of reef shark and fish in South Morotai Waters, North Maluku, Indonesia Sofyan JF, Ambariyanto A, Suwartimah K, Toha AHA ABSTRACT: This study aims to determine the biomass of reef shark and fish in South Morotai Waters in North Maluku, Indonesia. The Audible Stationary Count and Underwater Visual Census method were
Reproductive biology of the Rasptail skate
Reproductive biology of the Rasptail skate Rostroraja velezi (Rajiformes: Rajidae) Katherin Soto‐López PhD, Rosa Isabel Ochoa‐Báez PhD, Felipe Galván‐Magaña PhD, Maria Cristina Oddone PhD ABSTRACT: The Rasptail skate Rostroraja velezi is commercially exploited in artisanal elasmobranch fisheries along the west coast of Baja California Sur, Mexico, but information on its life history is limited. This
The megamouth shark is not a luminous species
The megamouth shark, Megachasma pelagios, is not a luminous species Laurent Duchatelet, Victoria C. Moris, Taketeru Tomita, Jacques Mahillon, Keiichi Sato, Catherine Behets, Jérôme Mallefet ABSTRACT: Despite its five meters length, the megamouth shark (Megachasma pelagios Taylor, Compagno & Struhsaker, 1983) is one of the rarest big sharks known in the world (117 specimens observed
RESEARCHERS & DLNR TEAM UP TO IDENTIFY SPECIES OF SHARKS INVOLVED IN ATTACKS
News Release Department of Land and Natural Resources (DLNR) 18. December 2020 — — — — — — — — — — — 100% Certainty Large Tiger Shark Killed Lahaina Man (Honolulu) – Using new DNA barcoding technology, a pair of shark researchers at the University of Hawai‘i‘s – Hawai‘i Institute of Marine Biology (HIMB)
Bull shark with an intentionally attached harness rig
Escaped bait: Bull shark Carcharhinus leucas with an intentionally attached harness rig Jayne M. Gardiner, Tonya R. Wiley ABSTRACT: A 193 cm total length female bull shark Carcharhinus leucas was captured in Florida bearing intentionally attached materials which resembled a harness. Harness‐type live bait rigs are commonly used for small baitfish; some anglers use such devices
Distribution and length composition of lemon sharks in a nursery ground in southern Cuba
Distribution and length composition of lemon sharks (Negaprion brevirostris) in a nursery ground in southern Cuba Ruiz-Abierno, A., Márquez-Farías, J.F., Hueter, R.E. et al. ABSTRACT: Characterization of essential habitat for sharks is a key requirement for effective conservation of shark populations. In Cuba, shark essential habitat is largely undocumented. Here we present the first study
Comparative morphology of labial cartilages in sharks
Comparative morphology of labial cartilages in sharks (Chondrichthyes, Elasmobranchii) C. Klimpfinger & J. Kriwet ABSTRACT: During the last years, feeding mechanisms of sharks have been documented mainly based on their stomach contents supplemented by video footages of feeding behaviours in some species. Rare kinematic analyses of shark jaws contributed additionally to our knowledge. However, not
Thermal strategy of a coral reef flat resident, the epaulette shark
Regulate or tolerate: Thermal strategy of a coral reef flat resident, the epaulette shark, Hemiscyllium ocellatum Tiffany J Nay, Rohan J Longbottom, Connor R Gervais, Jacob L Johansen, John F Steffensen, Jodie L Rummer, Andrew S Hoey ABSTRACT: Highly variable thermal environments, such as coral reef flats, are challenging for marine ectotherms and are thought