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Saturday, May 19, 2018

Researchers Say Something In The Past Killed A Lot Of Sperm Whales


According to a report by Science, sperm whales have a low genetic diversity, which hints that sometime in the species' distant past something killed off a great number of them. Researchers analyzed mitochondrial genomes from 175 sperm whale samples collected from biopsies of live and dead stranded whales across the globe. According to their results, about 100,000 years ago the sperm whale population had been reduced to about 10,000 when a freezing world caused extensive ice to exclude them from all of the world's oceans except the Pacific. The team of researchers reported in Molecular Ecology that today's sperm whales, approximately 360,000 animals, all descended from this single population. https://ift.tt/2k8tXyA http://www.wochit.com This video was produced by YT Wochit News using http://wochit.com

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