Researchers at NOAA Fisheries created a “one-stop shop” for information critical to conserving the Pacific sleeper shark.
A new study is shedding light on
’s steps toward better understanding the Pacific sleeper shark – "possibly the largest predatory fish in the ocean." Researchers at Fisheries compiled knowledge from various sources to provide new insights into its biology and ecology. They identified and prioritized research needs to better assess and manage the species."Yet we still know little about even its most basic biology," said Beth Matta, research fisheries biologist at the agency’s Alaska Fisheries Science Center. "We wanted to create a one-stop shop for information on Pacific sleeper sharks—a resource that others can use.
Fisheries said the two species are so closely related that they can interbreed and are difficult to distinguish. However, the Greenland shark is much better studied because it has a long history of being fished for its liver oil and meat.However, much of the recent data came from the center. The researchers partnered with Fisheries and Oceans Canada, who provided additional data.According to the study, the Pacific sleeper shark, named for its sluggish nature, lives throughout the Pacific Ocean.
Fisheries said new genetic evidence suggests that the Pacific sleeper shark is one big stock in the entire Pacific Ocean, from Alaska to the south end of the southern hemisphere. "We used to think there were three large species in the genus: Pacific sleeper shark, southern sleeper shark, and Greenland shark," Matta said. "Now we know the southern sleeper shark is not genetically distinct.
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