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作者 科学家发现鸟儿找到配偶后不“出轨”
Kingfisher

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第1楼于 2011-08-20 20:20 user profilesend a private message to usersend email to Kingfisherreply to postsearch all posts byselect and copy to clipboard. 
ie only, sorry for netscape users:-)add this post to my favorite list
美国研究人员发现,鸟类找到配偶后往往会忠于对方,不轻易出轨。不论配偶是同性还是异性,都是如此。

美国加利福尼亚大学伯克利分校研究员朱莉·埃利研究雀类行为,发现这些鸟儿用鸣叫增进与配偶间的“感情纽带”。

英国《每日电讯报》8月15日援引研究结果报道,包括鸟类在内,动物间的关系可能较为复杂,远不是“雄性与雌性相遇、交配”那么简单。

“动物如何建立关系、如何利用声音交流展开社会互动,是我感兴趣的课题,”埃利说,“观测结果令人惊讶:同性交往的动物仍会忠于配偶,就像异性交往的动物那样。”

另外,在同性恋群体长大的雄雀中,超过半数最终会选择与同性交配。当雌鸟靠近雄鸟时,雄鸟完全无视雌鸟,眼中只有“他”。

埃利认为,驱使鸟儿求偶的冲动较为复杂,不只是出于繁殖后代。“在一夫一妻制群体中,与配偶结伴或许有助于生存”,所以“找到一名‘合伙人’,无论是同性还是异性,可能会是优先任务”。

研究报告发表在英国《行为生态学与社会生物学》(Behavioral Ecology and Sociobiology)杂志上。

英文题目和摘要:

Original PaperSame-sex pair-bonds are equivalent to male-female bonds in a life-long socially monogamous songbird

Same-sex sexual behaviors are well documented in both captive and wild animals. In monogamous species, these behaviors areoften exclusive, each individual having only one same-sex partner. A bias in sex ratio has been proposed as a social contextyielding same-sex pair-bonding, but this hypothesis has rarely been tested. Focusing on a life-long pair-bonding songbird,the zebra finch Taeniopygia guttata, we tested whether same-sex pairing results from a shortage of individuals of the opposite sex. By experimentally skewingthe sex ratio towards members of one sex, we observed a greater proportion of same-sex pair-bonds of that sex. Moreover, weassessed whether the quality and stability of social interactions were equivalent in same-sex and malefemale pairs. Malemaleand femalefemale same-sex bonds display the same behavioral characteristics as malefemale ones: they are intense, highlyselective, and stable affinitive relationships involving the same behavioral displays already described in wild birds. Moreover,same-sex male bonds were sufficiently strong not to split up when individuals were given the opportunity to reproduce withfemales. Because the pair-bond in socially monogamous species represents a partnership that may give advantages for survival(e.g., resources defense, fighting against predators, etc.), we propose that same-sex pairing in the zebra finch may resultfrom the pressure to find a social partner.


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君子之交淡如水,小人之交甘若醴。君子淡以亲,小人甘以绝。
鸟类共进化研究组:http://hi.baidu.com/coevolution

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作者 Re:科学家发现鸟儿找到配偶后不“出轨” [Re:Kingfisher]
hulungege1987


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第2楼于 2012-02-13 09:58 user profilesend a private message to userreply to postsearch all posts byselect and copy to clipboard. 
ie only, sorry for netscape users:-)add this post to my favorite list
鸟都这么专一,其实很多动物都是很专一,都是一夫一妻的,比如狼




http://www.bio1000.com/生命科学

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