Why did menopause evolve? New study of whales gives some clues

March 14, 2024

Killer whales and four other toothed whales are the others. They found that in the five menopausal species - killer whales, false killer whales, beluga whales, narwhals and short-finned pilot whales - the females live about four decades longer than the females of non-menopausal species of similar size. Other toothed whales such as sperm whales, as well as the filter-feeding baleen whales, including the blue whale, have not been found to experience menopause. These studies have shown that grandma killer whales help their daughters and grandchildren by providing food, protection and, in a manner of speaking, wisdom. A file photo of killer whales surfacing in the sea near Rausu, Hokkaido, Japan, July 1, 2019.

The source of this news is from Tuoi Tre News