Scientific Papers

Shark aggregation and tourism near the Israeli Mediterranean coast

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

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

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

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

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

Reproductive philopatry in a coastal shark drives age-related population structure

Reproductive philopatry in a coastal shark drives age-related population structure

Reproductive philopatry in a coastal shark drives age-related population structure Juliana D. Klein, Aletta E. Bester-van der Merwe, Matt L. Dicken, Kolobe L. Mmonwa, Peter R. Teske ABSTRACT: The cosmopolitan lamniform shark Carcharias taurus (commonly known as the ragged-tooth, grey nurse or sand tiger shark) is threatened by overexploitation in parts of its range. Return

Molecular tools for identification of shark species involved in depredation incidents

Molecular tools for identification of shark species involved in depredation incidents

Molecular tools for identification of shark species involved in depredation incidents in Western Australian fisheries Seema Fotedar, Sherralee Lukehurst, Gary Jackson, Michael Snow ABSTRACT: Shark depredation is an issue of concern in some Western Australian recreational and commercial fisheries where it can have economic, social and ecological consequences. Knowledge of the shark species involved is

Potential detection of illegal fishing by passive acoustic telemetry

Potential detection of illegal fishing by passive acoustic telemetry

Potential detection of illegal fishing by passive acoustic telemetry David M. Tickler, Aaron B. Carlisle, Taylor K. Chapple, David J. Curnick, Jonathan J. Dale, Robert J. Schallert, Barbara A. Block ABSTRACT: Acoustic tagging is typically used to gather data on the spatial ecology of diverse marine taxa, informing questions about spatio-temporal attributes such as residency

Observations of stranded and swimming whale sharks in Khor Al-Zubair

Observations of stranded and swimming whale sharks in Khor Al-Zubair

Observations of stranded and swimming whale sharks Rhincodon typus in Khor Al-Zubair, NW Arabian Gulf and Shatt al-Arab Estuary, Iraq. Jawad LA, Al-Dirawi AMH, Al-Hilali H, Al-Asadi UTS ABSTRACT: This study is the first record of a whale shark Rhincodon typus in Iraqi waters and the second record from the Arabian (Persian) Gulf portion of

Whale Shark Tourism: Impacts on Coral Reefs in the Philippines

Whale Shark Tourism: Impacts on Coral Reefs in the Philippines

Whale Shark Tourism: Impacts on Coral Reefs in the Philippine C. W. Martin Wong, Inga Conti-Jerpe, Laurie J. Raymundo, Caroline Dingle, Gonzalo Araujo, Alessandro Ponzo, David M. Baker ABSTRACT: Reef-based tourism has been developing rapidly in recent decades yet its impacts on reef ecosystems are often overlooked. In Tan-awan, Oslob, Philippines, whale sharks are attracted

A new species of whaler shark from the Western Central Pacific

A new species of whaler shark from the Western Central Pacific

Published on 02. January 2019 Lost before found: A new species of whaler shark Carcharhinus obsolerus from the Western Central Pacific known only from historic records William T. White, Peter M. Kyne, Mark Harris ABSTRACT: Carcharhinus obsolerus is described based on three specimens from Borneo, Thailand and Vietnam in the Western Central Pacific. It belongs

Fatal shark attacks on divers in Australia, 1960-2017

Fatal shark attacks on divers in Australia, 1960-2017

Published in December 2018 Fatal shark attacks on divers in Australia, 1960-2017 J. Lippmann ABSTRACT: AIM: The aim of this study was to identify the number, location and characteristics associated with fatal shark attacks on divers in Australian waters from 1960 to 2017, inclusive. METHODS: Searches were made of the Divers Alert Network Asia-Pacific Diving

Decline of coastal apex shark populations over the past half century

Decline of coastal apex shark populations over the past half century

Published on 13 December 2018 Decline of coastal apex shark populations over the past half century George Roff, Christopher J. Brown, Mark A. Priest & Peter J. Mumby ABSTRACT: Overexploitation of large apex marine predators is widespread in the world’s oceans, yet the timing and extent of declines are poorly understood. Here we reconstruct a

A new microendemic species of the deep-water catshark genus Bythaelurus from the Indian Ocean

A new microendemic species of the deep-water catshark genus Bythaelurus from the Indian Ocean

Published on 12. December 2018 A new microendemic species of the deep-water catshark genus Bythaelurus (Carcharhiniformes, Pentanchidae) from the northwestern Indian Ocean, with investigations of its feeding ecology, generic review and identification key Simon Weigmann, Carina Julia Kaschner, Ralf Thiel ABSTRACT: A new deep-water catshark, Bythaelurus stewarti, is described based on 121 examined specimens caught

Description of a new deep-water dogfish shark from Hawaii

Description of a new deep-water dogfish shark from Hawaii

Published on 21. November 2018 Description of a new deep-water dogfish shark from Hawaii, with comments on the Squalus mitsukurii species complex in the West Pacific Toby S. Daly-Engel, Amber Koch, James M. Anderson, Charles F. Cotton, R. Dean Grubbs ABSTRACT: Dogfish sharks of the genus Squalus are small, deep-water sharks with a slow rate