有人在日本屋久島(Yakushima)觀察到一隻日本公猴(Japanese macaque, Macaca fuscata yakui)試著上一隻母的梅花鹿(sika deer, Cervus nippon yakushimae),雖然說猴子本來沒事就會騎在鹿背上,但這是這隻公猴射惹。科學家說這種情況並不常見,有也是找近親(species),不會跨種類(interspecies),這種超越種族的~~,稱作 heterospecies sexual behaviour 或是稱 "reproductive interference" (沒有進去)[註*]。
原論文提了出現這個情形的幾個可能,一種是那隻公猴在學習做愛(learn how to copulation),但是說這不太可能,因為要學也是看其他猴子的交配來學習。再來就是認錯種類(incomplete species recognition), 但這通常是出現在較相近的種類,例如猩猩和猴子,而不是差的有點遠的鹿和猴子 orz。
科學家認為會出現這種情形,比較有可能是因為公猴在自己的族群裡找不到母猴要跟他做愛,所以只好找其他種族,通常出現在競爭激烈的社群裡,例如母猴較少。而在屋久島的猴子社群裡,這隻公猴似乎屬於是邊緣人..... 嗯,邊緣猴的那群。(幫 QQ)
不知道為什麼我看到 discussion 出現這句覺得頗好笑。XD
"Moreover, the licking behaviour shown by the deer seems to indicate that the sperm could be a good source of protein."
然後交配的學術用字是:copulation
* Reproductive interference includes: signal jamming, heterospecific rivalry, misdirected courtship, heterospecific mating attempts, erroneous female choice, heterospecific mating, and hybridization
Ref: J Gröning & A Hochkirch, Reproductive interference between animal species. Q Rev Biol (2008)
Article:
V Morell, Why this monkey tried to have sex with a deer. Science Magazine (2017)
Paper:
Marie Pelé et al, Interspecies sexual behaviour between a male Japanese macaque and female sika deer. Primates (2017)
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