Older killer whales make the best mothers

Tuesday, February 3, 2009 - 05:21 in Paleontology & Archaeology

Killer whales (Orcinus orca) nearing the menopause may be more successful in rearing their young. New research published in BioMed Central's open access journal Frontiers in Zoology shows that estimated survival rates for calves born to these older mothers were 10% higher than those for other calves...

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