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远亲不如近邻 研究称鸟儿也需要“好邻居”

2017-10-12 06:51:54   

形容邻里关系亲厚时,人们常说“远亲不如近邻”。英国东英吉利大学一项最新研究则显示,不只是人类,鸟儿也需要“好邻居”。

研究人员以塞舌尔莺作为观察对象,结果发现,这种鸟儿有时也会与邻居发生争斗,但不会与“亲戚”或已经为邻有一段时间的友善“邻居”发生争斗。通过体检和测量染色体端粒长度,研究人员还发现,与“亲戚”或友善鸟儿做邻居的塞舌尔莺健康状况更好,也老得更慢,而一旦有新邻居或“不守规矩”的鸟儿侵入塞舌尔莺的领地,它们的健康状况就会下降,染色体端粒长度也会变短。端粒位于染色体末端,作用相当于鞋带两头防止磨损的“保护帽”。随着细胞不断分裂和老化,端粒会慢慢变短。因此端粒长度是判断细胞衰老程度的重要标志,衰老越严重,端粒越短。

英国《每日邮报》援引研究带头人凯特·贝宾顿的话报道,跟人类一样,鸟儿也需要“私有领地”并为此防御“入侵者”。他们的研究表明,鸟儿也需要好邻居。(乔颖)【新华社微特稿】

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