例えば哺乳類の一種のイッカクは、オスが長いツノ(実はキバ)を持つことで知られていますが、これはオス同士の争いに用いられるだけでなく、ツノが長く争いに強いオスをメスが選んでいるためではないかと指摘されていますね(写真はメスの前でツノを比べ合うイッカクのオス)。 https://t.co/pNuCBScIqW https://t.co/Y8Gr6OcyIp
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163 X posts from 142 X users, with an upper bound of 1,060,109 followers.
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@JJinsing @avpalaoro and Zachary Graham wrote a paper on this with that specific data I believe https://t.co/oyd3oXLnC7
916 followers
Via @WhySharksMatter - The longer the better: evidence that narwhal tusks are sexually selected - @RSocPublishing: Once thought to be the magical horn of a unicorn, narwhal tusks are one of the most charismatic structures in biology. Despite years of… http