The health of “entire ocean ecosystems” and food security is in jeopardy, said Dulvy, a former co-chair of the shark specialist group of the International Union for Conservation of Nature (IUCN).The number of species of sharks, rays, and chimaeras, known together as chondrichthyan fishes, facing “a global extinction crisis” has more than doubled in less than a decade, according to the paper published September 6 in the journal Current Biology.
New research published in premier science journal Nature last week, with input from NIWA, showed the global population of oceanic sharks and rays has declined by more than 70 per cent in the past 50 years, with ongoing decline likely to lead to the extinction of some species.
The albino lucifer's dogfish found by Dr. Brit Finucci is the first record of albinism in the lanternshark family, Etmopteridae.Because the species of shark lives in near or total darkness, Dr. Finucci says it’s unlikely that the shark’s albino condition had a considerable effect on its life.
They found that on average, a quarter of the denticles on the sharks in acidic water were damaged, compared to 9.2 percent on the controls.
Photo © Atlantic White Shark Conservancy Fish and wildlife recovery can be unpopular, especially when it inconveniences the public.Great white shark predation on seal off Monomoy National Wildlife Refuge at the elbow of Cape Cod. Photo © Atlantic White Shark Conservancy Is the recolonization of gray seals helping with white shark recovery?
A few other on-phone features: Personal References lets Google Assistant better understand what you mean when you say “What’s the weather like at Mom’s house” or “Show me pictures of my son.” And Driving Mode pulls up a personalized dashboard designed for when you’re in the car.
By inserting a postage-stamp image of a baseball, they found they could confuse the neural network into thinking a whale was a shark.
The Great White Shark Genome Is Here Sharks are renowned for their wound healing, lifespans of 70-odd years, and low rates of cancer. Stanhope and Shivji’s new map reveals that great white sharks also possess huge chunks of code for these genome-stabilizing DNA repair mechanisms and for tumor suppression.
Warrick Lyon, a NIWA fisheries technician, says the study is heading to the Pacific to test survival rates for sharks treated differently – such as those where hooks are not removed and where long pieces of monofilament fishing line are left attached.
A data transmitting tag that was attached to a mako shark recovered from Ninety Mile Beach (upper) compared to a new tag (lower).