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IMAGE: A gray beluga whale calf with three adults in Cook Inlet, Alaska. NMFS ESA/MMPA Permit #20465.
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Credit: Paul Wade, NOAA Alaska Fisheries Science Center.
NEWPORT, Ore. - Researchers can now determine the age and sex of living beluga whales in Alaska's Cook Inlet thanks to a new DNA-based technique that uses information from small samples of skin tissue.
Accurate age estimates are vital to conservation efforts for Cook Inlet belugas, which were listed as endangered following a significant population decline in the 1990s. Previously, researchers could only determine the age of beluga whales by studying the teeth of dead animals.