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The immunoglobulins of cartilaginous fishes
The immunoglobulins of cartilaginous fishes Hanover Matz, Danish Munir, James Logue, Helen Dooley ABSTRACT: Cartilaginous fishes, comprising the chimeras, sharks, skates, and rays, split from the common ancestor with other jawed vertebrates approx. 450 million years ago. Being the oldest extant taxonomic group to possess an immunoglobulin (Ig)-based adaptive immune system, examination of this group
Owner of Japanese Fishing Vessel Pleads Guilty to Unlawful Trafficking of Shark Fins
Published on 9 Oct, 2020 at 14:01 in Conservation & Fishery, Front Page, Shark Trade | Viewed times | No Comments
Press Release U.S. Department of Justice Friday, October 9, 2020 — — — — — — — — — —- — — — Sentenced to Largest Monetary Penalty Ever Imposed in Federal Shark Finning Case Hamada Suisan Co. Ltd., the owner of the Japanese-flagged fishing vessel, M.V. Kyoshin Maru No. 20, pleaded guilty, pursuant to
Over 90 endangered fish and invertebrates are caught in industrial fisheries
Over 90 endangered fish and invertebrates are caught in industrial fisheries Roberson, L.A., Watson, R.A. & Klein, C.J. ABSTRACT: Industrial-scale harvest of species at risk of extinction is controversial and usually highly regulated on land and for charismatic marine animals (e.g. whales). In contrast, threatened marine fish species can be legally caught in industrial fisheries.
Uncovering the ecological roles and importance of rays
Buried in the sand: Uncovering the ecological roles and importance of rays Kathryn I. Flowers, Michael R. Heithaus, Yannis P. Papastamatiou ABSTRACT: Rays (superorder Batoidea) are the most diverse group of elasmobranchs, and many are threatened with extinction. However, there remain areas where research on the ecology of this group is lacking, from trophic interactions
When large marine predators feed on fisheries catches
When large marine predators feed on fisheries catches: Global patterns of the depredation conflict and directions for coexistence Paul Tixier, Mary‐Anne Lea, Mark A. Hindell, Dirk Welsford, Camille Mazé, Sophie Gourguet, John P. Y. Arnould ABSTRACT: The sustainable mitigation of human–wildlife conflicts has become a major societal and environmental challenge globally. Among these conflicts, large
Sex differentiation in seasonal distribution of the starry smooth‐hound
Sex differentiation in seasonal distribution of the starry smooth‐hound Mustelus asterias Niels W. P. Brevé, Hendrik V. Winter, Paul A. D. M. Wijmans, Eleanor S. I. Greenway, Leopold A. J. Nagelkerke ABSTRACT: This mark‐recapture study of starry smooth‐hound Mustelus asterias tagged during the summer months near the Dutch coast demonstrates a large‐scale spatial sex differentiation
Distributional records of giant freshwater stingray in Indonesia
Updating status of the distributional records of giant freshwater stingray Urogymnus polylepis (Bleeker, 1852) in Indonesia Muhammad Iqbal, Arum Setiawan, Yuanita Windusari, Indra Yustian, Hilda Zulkifli ABSTRACT: The Giant Freshwater Stingray Urogymnus polylepis (Bleeker, 1852) has been known from several drainages in Sunda land (Sumatra, Kalimantan and Java). We compiled most recent update records of
Asymptotic Growth of Whale Sharks Suggests Sex-Specific Life-History Strategies
Asymptotic Growth of Whale Sharks Suggests Sex-Specific Life-History Strategies Mark G. Meekan, Brett M. Taylor, Emily Lester, Luciana C. Ferreira, Ana M. M. Sequeira, Alistair D. M. Dove, Matthew J. Birt, Alex Aspinall, Kim Brooks, Michele Thums ABSTRACT: Age and growth data are central to management or conservation strategies for any species. Circumstantial evidence suggests
Stock Status Estimating of 5 Shark Species in the Waters Around Taiwan
Stock Status Estimating of 5 Shark Species in the Waters Around Taiwan Using a Length-Based Bayesian Biomass Estimation (LBB) Method Peilong Ju, Mingru Chen, Yongjun Tian, Yu Zhao, Shengyun Yang, Jiamei Xiao ABSTRACT: Five shark stocks in the waters around Taiwan were assessed using the LBB method, addressing the present gap. Among them, only one
An estimate of the number of white sharks interacting with ecotourism in Guadalupe Island
An estimate of the number of white sharks Carcharodon carcharias interacting with ecotourism in Guadalupe Island Edgar E. Becerril‐García, Edgar M. Hoyos‐Padilla, Omar Santana‐Morales, Miguel A. Gutiérrez‐Ortiz, Arturo Ayala‐Bocos, Felipe Galván‐Magaña ABSTRACT: The aim of the present study is to provide an estimate of the number of white sharks Carcharodon carcharias that seasonally interact with
Reproductive cycle and fecundity of finetooth sharks from the Northwest Atlantic Ocean
Re‐evaluation of reproductive cycle and fecundity of finetooth sharks Carcharhinus isodon (Valenciennes 1839) from the Northwest Atlantic Ocean, with new observations on ovarian cycle and reproductive endocrinology of biennially reproducing sharks Amanda N. Brown, Bryan S. Frazier, Jim Gelsleichter ABSTRACT: To provide updated information on life history for improved fishery management, the reproductive cycle of
Spermatogenesis in mature male scalloped hammerhead sharks
A first observation of spermatogenesis in mature male scalloped hammerheads (Sphyrna lewini) from Zinkwazi, KwaZulu-Natal, South Africa Coetzee, H.J., Naidoo, K. & Wagenaar, I. ABSTRACT: Sharks are not only threatened, but also have a low fecundity as they are being overfished. The shark family, Sphyrnidae, consists of nine species of which three are found in
Using perceptions to examine human responses to blanket bans: The case of the thresher shark landing-ban in Sri Lanka
Using perceptions to examine human responses to blanket bans: The case of the thresher shark landing-ban in Sri Lanka Claire Collins, Tom Bech Letessier, Annette Broderick. Isuru Wijesundara, Ana Nuno ABSTRACT: Species-specific bans are increasingly being implemented to stem loss of vulnerable marine species, but there is a paucity of evaluative research into resulting socio-economic
Reproductive biology of two pelagic sharks in the eastern Atlantic Ocean
Aspects of the reproductive biology of two pelagic sharks in the eastern Atlantic Ocean Feng Wu, Richard Kindong, Xiaojie Dai, Ousmane Sarr, Jiangfeng Zhu, Siquan Tian, Yunkai Li, Bruno T. N. Nsangue ABSTRACT: This study used data provided by the Chinese Longline Fishery Scientific Observer Programme from the tropical eastern Atlantic Ocean to estimate the
Multiple Paternity in the Shortfin Mako Shark
Accessing Multiple Paternity in the Shortfin Mako Shark (Isurus oxyrinchus) Shang Yin Vanson Liu, Wen-Pei Tsai, Meng Shan Lee, Hsiu-Wen Chien ABSTRACT: Multiple paternity has been demonstrated in a variety of sharks with different reproductive modes (i.e., viviparous, ovoviviparous, adelphophagy, oviparous), although the number of sires per litter varies considerably among species. To date, such