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New DNA-based technique allows researchers to determine age of living beluga whales in Alaska
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.
The new aging method uses DNA methylation data and machine learning to develop a model that captures the relationship between methylation and age. This relationship provides an epigenetic clock for beluga whales.
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IMAGE: A gray beluga whale calf with three adults in Cook Inlet, Alaska. NMFS ESA/MMPA Permit #20465. view more
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.
Cook Inlet beluga whales. Photo credit: NOAA Fisheries
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.
The new aging method uses DNA methylation data and machine learning to develop a model that captures the relationship between methylation and age. This relationship provides an epigenetic clock for beluga whales.
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