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日研究人员探究蚁后长期储精基因机制

2017-08-15 14:00:45   新华网

新华社东京8月15日电(记者 华义)在蚂蚁的世界中,蚁后通常只需交配一次,就可终生产卵,精子能在体内长期储存。日本研究人员最新发现了可能与蚁后这种能力相关的12个基因。

很多种类蚂蚁的蚁后寿命可达10年以上,它们能在一次交配后将大量精子存在名为“储精囊”的器官中,以备产卵时使用。蚁后这种在常温下长期储存精子的能力一直令人不解。

日本基础生物学研究所等机构研究人员在英国《科学报告》杂志上发表论文说,他们以常见的大阪举腹蚁为研究对象,对蚁后进行基因分析,结果发现了12个与蚁后储精囊功能相关的基因,且这些基因先前从未在其他雌性昆虫的生殖器官中发现过。研究人员猜测,这些基因可能在蚁后储精囊的形成及保存精子机制中发挥特殊作用。

研究人员说,在人类不孕不育治疗和畜牧业中均需要冷冻保存精子,如能弄清蚁后如何在常温下长期保存精子的机制,或有助改进人或家畜精子的保存方法。他们将进一步研究新发现这些基因的具体机能。

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