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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 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 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 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 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
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
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
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
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
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
Ethnotaxonomy of sharks from tropical waters of Brazil
Published on 21. November 2018 Ethnotaxonomy of sharks from tropical waters of Brazil Marcelo Moreira de Carvalho, Mônica Rocha de Oliveira, Priscila Fabiana Macedo Lopes, Jorge Eduardo Lins Oliveira ABSTRACT: Background Accessing folk knowledge from small-scale fishers is an affordable and reliable approach to understand the dynamic and diversity of shark species worldwide, especially of
Sharks, rays and marine protected areas
Published on 12. November 2018 Sharks, rays and marine protected areas: A critical evaluation of current perspectives Tracy MacKeracher, Amy Diedrich, Colin A. Simpfendorfer ABSTRACT: Marine protected areas (MPAs) are increasingly advocated for the conservation and management of sharks and rays. However, substantial uncertainty remains regarding which species can benefit from MPAs. Meanwhile, area‐focused protection
Practical measures for sustainable shark fisheries
Published on 02. November 2018 Practical measures for sustainable shark fisheries: Lessons learned from an Indonesian targeted shark fishery Irfan Yulianto ,Hollie Booth, Prayekti Ningtias, Tasrif Kartawijaya, Juan Santos, Sarmintohadi, Sonja Kleinertz, Stuart J. Campbell, Harry W. Palm, Cornelius Hammer ABSTRACT: Overfishing is a major threat to the survival of shark species, primarily driven by
A case study looking at tapeworm diversity among sharks
Published on 26. October 2018 Host diet influences parasite diversity: a case study looking at tapeworm diversity among sharks Trent K. Rasmussen, Haseeb S. Randhawa ABSTRACT: In theory, animal diets may act as important filters for different parasite species. However, there is currently a lack of empirical research looking at host diet as a potential
Passive bristling of mako shark scales in reversing flows
Published on 24. October 2018 Passive bristling of mako shark scales in reversing flows Kevin T. Du Clos, Amy Lang, Sean Devey, Philip J. Motta, Maria Laura Habegger, Brad J. Gemmell ABSTRACT: Shark skin has been shown to reduce drag in turbulent boundary layer flows, but the flow control mechanisms by which it does so