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Recreational fishers catching more sharks and rays
Published on 31 Jan, 2020 at 13:46 in Research | Viewed times | No Comments
Press Release The University of British Columbia Institute for the Oceans and Fisheries 27. January 2020 — — — — — — — — — Recreational fishers are increasingly targeting sharks and rays, a situation that is causing concern among researchers. A new study by an international team of scientists reveals that recreational catches of
Diel patterns in swimming behavior of the bluntnose sixgill
Diel patterns in swimming behavior of a vertically migrating deepwater shark, the bluntnose sixgill (Hexanchus griseus) Daniel M. Coffey, Mark A. Royer, Carl G. Meyer, Kim N. Holland ABSTRACT: Diel vertical migration is a widespread behavioral phenomenon where organisms migrate through the water column and may modify behavior relative to changing environmental conditions based on
Sharp increase in Ningaloo whale shark injuries might be due to boat encounters
Published on 29 Jan, 2020 at 10:32 in Research | Viewed times | No Comments
Press Release Australian Institute of Marine Science 24. January 2020 — — — — — — — — — — — — Scarring and major lacerations due to vessel collisions becoming more common, study finds. Almost one-fifth of the whale sharks (Rhincodon typus) in Western Australia’s Ningaloo Reef Marine Park show major scarring or fin
Multi-year patterns in scarring, survival and residency of whale sharks in Ningaloo Marine Park
Multi-year patterns in scarring, survival and residency of whale sharks in Ningaloo Marine Park, Western Australia Emily Lester, Mark G. Meekan, Peter Barnes, Holly Raudino, Dani Rob, Kelly Waples, Conrad W. Speed ABSTRACT: Documentation of scarring patterns on marine megafauna provides a means of quantifying the risk of anthropogenic threats that occur in the open
Field assessment of behavioural responses of southern stingrays to acoustic stimuli
Field assessment of behavioural responses of southern stingrays (Hypanus americanus) to acoustic stimuli Megan F. Mickle, Rachel H. Pieniazek, Dennis M. Higgs ABSTRACT: The ability of elasmobranchs to detect and use sound cues has been heavily debated in previous research and has only recently received revived attention. To properly understand the importance of sound to
Opportunities from citizen science for shark conservation
Opportunities from citizen science for shark conservation, with a focus on the Mediterranean Sea F. Bargnesi, S. Lucrezi, F. Ferretti ABSTRACT: The Mediterranean Sea is a hotspot for shark conservation. A decline in large pelagic shark populations has been observed in this vast region over the last 50 years and a lack of data on the
Phylogenetics and biogeography of the walking shark genus Hemiscyllium
Walking, swimming or hitching a ride? Phylogenetics and biogeography of the walking shark genus Hemiscyllium Christine L. Dudgeon, Shannon Corrigan, Lei Yang, Gerry R. Allen, Mark V. Erdmann, Fahmi, Hagi Y. Sugeha, William T. White, Gavin J. P. Naylor ABSTRACT: It can be challenging to identify the forces that drive speciation in marine environments for
Large-scale movements and site fidelity of bull sharks at Reunion Island
Large-scale movements and site fidelity of bull sharks (Carcharhinus leucas) at Reunion Island (Indian ocean) Marc Soria, Yann Tremblay, Antonin Blaison, Fabien Forget, Estelle Crochelet, Laurent Dagorn ABSTRACT: Two bull sharks ( Carcharhinus leucas ) were tagged in coastal waters off Reunion Island in the tropical Indian Ocean and where tracked for 174 and 139
Morphological description of ovary and uterus of the nurse shark caught off Northeast Brazil
Morphological description of ovary and uterus of the nurse shark (Ginglymostoma cirratum) caught off at the Fortaleza coast, Northeast Brazil Mariana G. Rêgo, Maria Lucia G. Araujo, Maria Edna G. Barros, Lorena D’Andrade Aires, Paulo G.V. Oliveira, Fábio H.V. Hazin, John L. Fitzpatrick, Joaquim Evêncio-Neto ABSTRACT: The nurse shark, Ginglymostoma cirratum (Bonnaterre, 1778) is one
The importance of oceanic atoll lagoons for coral reef predators
The importance of oceanic atoll lagoons for coral reef predators Christina Skinner, Aileen C. Mill, Steven P. Newman, S. Nadia Alsagoff, Nicholas V. C. Polunin ABSTRACT: Predators on coral reefs play an important ecological role structuring reef fish communities and are important fishery targets. It is thought that reef predator assemblages increase in density and
Abundance and distribution of the white shark in the Mediterranean Sea
Abundance and distribution of the white shark in the Mediterranean Sea Stefano Moro, Giovanna Jona‐Lasinio, Barbara Block, Fiorenza Micheli, Giulio De Leo, Fabrizio Serena, Massimiliano Bottaro, Umberto Scacco, Francesco Ferretti ABSTRACT: Conservation of apex predators is a key challenge both in marine and terrestrial ecosystems. The white shark is a rare but persistent inhabitant of
Prevalence, persistence and impacts of residual fishing hooks on tiger sharks
Prevalence, persistence and impacts of residual fishing hooks on tiger sharks Michel Bègue, Eric Clua, Gilles Siu, Carl Meyer ABSTRACT: We used long-term observations of 55 individually identified tiger sharks (Galeocerdo cuvier) at a shark ecotourism site off Tahiti to estimate the prevalence, retention times and impacts of residual hooks and trailing line resulting from
The artisanal elasmobranch fishery on Guatemala’s Caribbean coast
Description and characterization of the artisanal elasmobranch fishery on Guatemala’s Caribbean coast Ana Hacohen-Domené, Francisco Polanco-Vásquez, Colombo Estupiñan-Montaño, Rachel T. Graham ABSTRACT: Small-scale shark and ray fisheries are conducted throughout Central America’s Caribbean coast. Yet, there is limited information regarding catch composition and diversity of these fisheries, especially in Guatemala. Surveys of catch landings were
New Jersey Governor Signs Shark Fin Bill Into Law
Published on 14 Jan, 2020 at 13:16 in Conservation & Fishery, Front Page, Shark Trade | Viewed times | No Comments
Press Release Office of the Governor, State of New Jersey 09. January 2020 — — — — — — — — — — — Governor Murphy Signs Legislation Prohibiting Possession, Sale, Trade, and Distribution of Shark Fins TRENTON – Governor Phil Murphy today signed S2905, which will prohibit the sale, trade, distribution, or offering for
Multiple morphological abnormalities in a blue shark embryo from the Peruvian coast
Multiple morphological abnormalities in a blue shark Prionace glauca (Linnaeus, 1758) embryo from the Peruvian coast, southeast Pacific Keny Kanagusuku, Miguel Romero, Sergio Ramírez-Amaro ABSTRACT: This study reports for the first time a case of multiple morphological abnormalities in a blue shark Prionace glauca embryo collected on the Peruvian coast, southeast Pacific. External exploration and