rbkwp
Mythical Member
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Today we learn about the myth of bigger male mammals, explore what OpenAI’s Sora text-to-video AI tool might mean for science and consider the way we think about menopause. |
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The most dimorphic species was the northern elephant seal (Mirounga angustirostris), where males had a mean mass 3.2 times that of females (Michele and Tom Grimm/Alamy) |
Most male mammals aren’t largerAn analysis of more than 400 mammal species is overturning Charles Darwin’s assertion that in most, males are larger than females. In fact, this is only the case for 45% of species, with 39% showing no sexual size dimorphism and 16% having larger females than males. “There’s been this really strong inertia toward the larger male narrative, but it was just based on Darwin’s hand-wavy statement, and the evidence doesn’t really support it,” says evolutionary biologist and study co-author Kaia Tombak. Scientific American | 4 min read Reference: Nature Communications paper |
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