Long baleen whale mothers are more likely to have female calves than males, according to a new study led by the University of Washington. The findings contradict a popular evolutionary theory ...
An endangered southern resident orca calf, first discovered on New Year’s Eve, has been spotted again, and the Center for Whale Research is thrilled at the calf’s appearance. “She’s still there. She ...
SEATTLE — The Center for Whale Research announced the addition of a new calf in J pod along with the news of the recent passing of one of its female calves Wednesday. "New Year’s Eve 2024 was a day of ...
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Longer body size means more female calves for baleen whale moms, contrary to popular hypothesis
UW researchers tested the hypothesis in marine mammals by comparing maternal length and fetal sex in more than 100,000 baleen whales. They found that the fetal sex ratio skews female for longer—and ...
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