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Shape analysis of shark jaws as a tool to identify species involved in incidents with humans
Shape analysis of shark jaws as a tool to identify species involved in incidents with humans Duarte-Neto P, Rodrigues J, Lessa R ABSTRACT: Shark incidents in Recife, Pernambuco state (Brazil), are registered since 1992. The occurrence of those events is in a relatively small area of urban beaches of about 30 km long, making up one
Heavy metal accumulation in and food safety of shark meat from Jeju island
Heavy metal accumulation in and food safety of shark meat from Jeju island, Republic of Korea Sang Wha Kim, Se Jin Han, Yonggab Kim, Jin Woo Jun, Sib Sankar Giri, Cheng Chi, Saekil Yun, Hyoun Joong Kim, Sang Guen Kim, Jeong Woo Kang, Jun Kwon, Woo Taek Oh, Jehyun Cha, Seunghee Han, Byeong Chun Lee,
Not all electric shark deterrents are made equal
Not all electric shark deterrents are made equal: Effects of a commercial electric anklet deterrent on white shark behaviour Channing A. Egeberg, Ryan M. Kempster, Nathan S. Hart, Laura Ryan, Lucille Chapuis, Caroline C. Kerr, Carl Schmidt, Enrico Gennari, Kara E. Yopak, Shaun P. Collin ABSTRACT: Personal shark deterrents offer the potential of a non-lethal
Meta‐analysis of post‐release fishing mortality in apex predatory pelagic sharks
Meta‐analysis of post‐release fishing mortality in apex predatory pelagic sharks and white marlin Michael K. Musyl, Eric L. Gilman ABSTRACT: Robust assessments of the effects of fishing require accounting for components of fishing mortality, including post‐release fishing mortality (Fr). Random‐effects meta‐analysis synthesized Fr in seven pelagic shark species captured, tagged and released with 401 pop‐up
Risks to biodiversity and coastal livelihoods from artisanal elasmobranch fisheries
Risks to biodiversity and coastal livelihoods from artisanal elasmobranch fisheries in a Least Developed Country: The Gambia (West Africa) Alec B. M. Moore, Bernard Séret, Roy Armstrong ABSTRACT: Developing nations in tropical regions harbour rich biological resources on which humans depend for food, income and employment, yet data to aid their management is often lacking.
Skeletal kinematics of the hyoid arch in the suction-feeding shark Chiloscyllium plagiosum
Skeletal kinematics of the hyoid arch in the suction-feeding shark Chiloscyllium plagiosum Bradley Scott, Cheryl A. D. Wilga, Elizabeth L. Brainerd ABSTRACT: White-spotted bamboo sharks, Chiloscyllium plagiosum, generate strong suction-feeding pressures that rival the highest levels measured in ray-finned fishes. However, the hyostylic jaw suspension of these sharks is fundamentally different from the actinopterygian mechanism,
Trends in global shark attacks
Trends in global shark attacks Stephen R. Midway, Tyler Wagner, George H. Burgess ABSTRACT: Shark attacks are a global phenomenon that attracts widespread attention and publicity, often with negative outcomes for shark populations. Despite the widespread perceptions of shark attacks, trends in human water activities and shark populations are both dynamic, resulting in variable rates
Inter-individual differences in ontogenetic trophic shifts among three marine predators
Inter-individual differences in ontogenetic trophic shifts among three marine predators Philip Matich, Jeremy J. Kiszka, Michael R. Heithaus, Baptiste Le Bourg, Johann Mourier ABSTRACT: Ontogenetic niche shifts are widespread. However, individual differences in size at birth, morphology, sex, and personalities can cause variability in behavior. As such, inherent inter-individual differences within populations may lead to
A Perspective on Future Tiger Shark Research
A Perspective on Future Tiger Shark Research Kim N. Holland, James M. Anderson, Daniel M. Coffey, Bonnie J. Holmes, Carl G. Meyer, Mark A. Royer ABSTRACT: This “Perspectives” paper identifies aspects of tiger shark (Galeocerdo cuvier) biology that are currently unknown or for which additional data are needed to improve interpretive power. Some of these
Disappearance of white sharks leads to the novel emergence of an allopatric apex predator
Disappearance of white sharks leads to the novel emergence of an allopatric apex predator, the sevengill shark Neil Hammerschlag, Lacey Williams, Monique Fallows, Chris Fallows ABSTRACT: Despite global declines of apex predatory sharks, evidence for ecosystem consequences remains limited and debated. This is likely a result of both the logistical difficulties of measuring such processes
Shark aggregation and tourism near the Israeli Mediterranean coast
Shark aggregation and tourism: opportunities and challenges of an emerging phenomenon Z. Zemah Shamir, S. Zemah Shamir, D. Tchernov, A. Scheinin, N. Becker ABSTRACT: In the last few winters, shark communities have been aggregating near the Israeli Mediterranean coast, at a specific point, near Hadera power station. This unusual phenomenon has fascinated residents, visitors, kayakers,
Clasper Morphology of the Japanese Sawshark
Clasper Morphology of the Japanese Sawshark, Pristiophorus japonicus Günther, 1870 (Chondrichthyes: Elasmobranchii) Renan A. Moreira, Marcelo R. de Carvalho ABSTRACT: Sawsharks (Pristiophoriformes) are slender, medium‐sized sharks with elongated, saw‐like snouts, and include the monotypic Pliotrema and Pristiophorus with seven species. The phylogenetic position of sawsharks is still problematic as phylogenetic hypotheses based on morphological and
Using DNA Barcoding to Investigate Patterns of Species Utilisation in UK Shark Products
Using DNA Barcoding to Investigate Patterns of Species Utilisation in UK Shark Products Reveals Threatened Species on Sale Catherine A. D. Hobbs, Robert W. A. Potts, Matthew Bjerregaard Walsh, Jane Usher, Andrew M. Griffiths ABSTRACT: Many shark populations are in decline, primarily due to overexploitation. In response, conservation measures have been applied at differing scales,
Effects of on-deck holding conditions and air exposure on post-release behaviours of sharks revealed by a remote operated vehicle
Effects of on-deck holding conditions and air exposure on post-release behaviours of sharks revealed by a remote operated vehicle Vincent Raoult, Jane E.Williamson, Timothy M.Smith, Troy F.Gaston ABSTRACT: While post-release mortality estimates have been conducted on a range of shark species, the short-term sub-lethal effects of capture, handling and release are poorly known and have
Bycatch and discarding patterns of dogfish and sharks taken in English and Welsh commercial fisheries
Bycatch and discarding patterns of dogfish and sharks taken in English and Welsh commercial fisheries Joana F. Silva, Jim R. Ellis ABSTRACT: At‐sea observer programmes can provide spatio‐temporal data on the sizes and quantities of fish being either discarded or retained, including for species and size categories that may not be sampled effectively during scientific