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WASHINGTON, April 15, 2021 /PRNewswire/ The shortfin mako shark is a step closer to listing under the U.S. Endangered Species Act (ESA) as the Biden Administration prepares for international negotiations on protecting the exceptionally depleted North Atlantic population. The National Marine Fisheries Service (NMFS) today announced its 90-day finding that a Defenders of Wildlife petition presents substantial information indicating ESA listing may be warranted. NMFS will commence a comprehensive status review at the same time that the agency considers its 2021 stance on a science-based international North Atlantic shortfin mako ban that has been stalled for years, due largely to U.S. opposition.
SAâs shark and ray list promotes biodiversityReece Reid
South Africaâs first ever dedicated checklist of sharks, rays, skates, and ghost sharks has finally been published
SOUTH Africaâs first ever dedicated checklist of sharks, rays, skates, and ghost sharks has finally been published.
David Ebert (AKA âThe Lost Shark Guyâ), a research associate at the South African Institute for Aquatic Biodiversity (SAIAB), published the checklist after undertaking the South African Shark and Ray Protection Project.
Supported by SAIAB, the project was implemented by WILDOCEANS (a programme of the WILDTRUST), and funded by the Shark Conservation Fund.
Zululand is a renowned shark territory, but this time itâs not about rugby! The list, entitled An annotated checklist of the chondrichthyans of South Africa, includes sharks found in and around local waters, as well as their IUCN Red List status that outlines their risk of extinction.
First SA shark checklist goes live grocotts.co.za - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from grocotts.co.za Daily Mail and Mail on Sunday newspapers.
Credit: Georgia Aquarium
Shark scientists at Georgia Aquarium, Scripps Institution of Oceanography at UC San Diego, and Dalhousie University are challenging the status quo in shark and ray mating research in a new study that looks at biological drivers of multiple paternity in these animals. The results were published March 4 in the journal
Molecular Ecology.
Many species of sharks and rays exhibit multiple paternity, where females give birth to a litter of pups that have different fathers. While widely documented in scientific literature, the drivers of this phenomenon are not well understood. However, previous research has cited male aggression as the reason, claiming that the females are unable to avoid or submit to their advances during mating. This has led to the convenience polyandry theory, the assumption that there is a greater cost for females when refusing male mating attempts, as being the most widely credited explanation.