A study found that based on teeth mark evidence, mother killer whales are more likely to support their sons against other orcas rather than their daughters.
It looked at"southern resident" killer whales, SWNS noted.
Males had 35% fewer tooth marks on their skin, the study found — and for those whose mothers were still breeding, there was no evidence the mothers’ presence reduced the tooth marks. The mention of menopause in female killer whales sparked an interesting comparison to human females as well. Female orcas can live to be in their 80s. They typically go through menopause in their late 30s and 40s, according to the Center for Whale Research in Washington state."It’s fascinating to see this post-menopausal mother-son relationship deepening our understanding of both the intricate social structures in killer whale societies and the evolution of menopause in species beyond humans," he said to SWNS.
France Dernières Nouvelles, France Actualités
Similar News:Vous pouvez également lire des articles d'actualité similaires à celui-ci que nous avons collectés auprès d'autres sources d'information.
Former prosecutor: Cops looking for suspected serial killer 'keepsakes'Hofstra Law professor Fred Klein wonders if they’re searching for grim keepsakes serial killers have been known to remove from each crime scene before they dump the body.
Lire la suite »
'Last Call' Doc Sneak Peek: Watch an Encounter With NYC Serial KillerDuring the early 1990s, amid a growing wave of anti-LGBTQ violence and the ongoing AIDS crisis, there was also a person known as the Last Call Killer stalking and terrorizing New York City's queer community.
Lire la suite »
Serial killer Dennis Rader calls Gilgo Beach suspect Rex Heuermann 'a clone of me'BTK serial killer Dennis Rader claims he predicted Gilgo Beach suspect would be 'a clone' of himself and says the two fathers of two have many similarities.
Lire la suite »
Killer whales protect adult males but not females, new study revealsThe new research indicates that postmenopausal female killer whales protect their sons – but not their daughters – from fights with other whales.
Lire la suite »
Mental health care failures in triple killer caseTriple killer Alexander Lewis-Ranwell set fire to hospital furniture and held fellow patients hostage.
Lire la suite »