A maternal strategy, which served Southern Resident killer whales well in the past, could raise their risk of extinction.
Ari Daniel, NPR NewsA new study finds that orca mothers still feed their adult sons. It’s a bond that may come with costs, researchers say.
Male orcas are massive, and so are their appetites. They’re also less maneuverable, which may make it harder for them to catch prey. All this means that a male like K35 needs help getting enough food. “Some whales started reproducing at the same age around the same time,” says Weiss, “and they had daughters. And they’ve produced three or four offspring.”out this week in the journal Current Biology, Weiss and his colleagues looked back across four decades of life history records of Southern Resident killer whales in the Pacific Northwest. The trend was clear:
Weiss can’t think of another animal that makes this never-ending investment when it has the option of reproducing multiple times. So why would these orca moms sacrifice so much for their sons? Weiss argues the potential payoff is huge.
Indonesia Berita Terbaru, Indonesia Berita utama
Similar News:Anda juga dapat membaca berita serupa dengan ini yang kami kumpulkan dari sumber berita lain.
Killer whale moms are still supporting their adult sons — and it's costing themOrca mothers care for their adult sons throughout their life by sharing food to sustain their massive appetites, a new study finds. The maternal strategy comes with costs — and may even raise their risk of extinction.
Baca lebih lajut »
Raising male offspring comes at a high price for orca mothersOnly 73 Southern Resident killer whales are left in the wild—and raising males may make this more complicated.
Baca lebih lajut »
This photo of male intimacy in 1980s India was more subversive than it seemsPhotographer Sunil Gupta's image of two men embracing besides a New Delhi landmark was a balm to what he called the 'repressive atmosphere' of 1980s India.
Baca lebih lajut »
Riley Gaines calls for separate locker rooms after seeing Lia Thomas's ‘male genitalia’Former championship swimmer and women’s sports advocate Riley Gaines said she saw Lia Thomas’s “male genitalia” while being forced to share a locker room with the biologically male swimmer, who identifies as a transgender female, last year.
Baca lebih lajut »
Swimmer Says She Was Forced To Change W/ Lia Thomas, 'Exposed To Male Genitalia'An All-American swimmer, is speaking out against the NCAA after she says she was forced to share a locker room with transgender swimmer Lia Thomas, and was exposed to 'male genitalia.'
Baca lebih lajut »