EUSOCIALITY HAS EVOLVED INDEPENDENTLY IN 2 GENERA OF BATHYERGID MOLE-RATS - BUT OCCURS IN NO OTHER SUBTERRANEAN MAMMAL
EUSOCIALITY HAS EVOLVED INDEPENDENTLY IN 2 GENERA OF BATHYERGID MOLE-RATS - BUT OCCURS IN NO OTHER SUBTERRANEAN MAMMAL
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DOI：
10.1007/bf02027122
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发表时间：
1993-10-01
影响因子：
2.3
通讯作者：
BENNETT, NC
中科院分区：
文献类型：
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作者：
JARVIS, JUM;BENNETT, NC
广泛的野外和实验室研究表明，达马拉兰鼹鼠和裸鼹鼠一样，具有脊椎动物社会的极端形式。一个群体通常有2只繁殖的和多达39只不繁殖的兄弟姐妹，其中90%的人生活在社会诱导的不育中；他们留在出生的群体，寻找食物，保卫群体和照顾后代。虽然在雨量充足的情况下，它们的扩散会加剧，但大多数成年非生殖动物仍留在它们的出生群体中，它们的扩散不能直接归因于栖息地饱和或不利的土壤条件。一个主要的分散事件发生在生殖动物死亡之后。非生殖动物在群体凝聚力、行为学和激素谱上的差异表明，这两个系统发育上存在差异的属在Bathyergidae中沿着不同的途径进化。
Extensive field and laboratory studies show that Damaraland mole-rats, like naked mole-rats, have an extreme form of vertebrate sociality. Colonies usually contain 2 reproductives and up to 39 non-breeding siblings, 90% of whom live a socially-induced lifetime of sterility; they remain in the natal colony, forage for food, defend the colony and care for successive litters. Although there is heightened dispersal following good rainfall, the majority of adult non-reproductives remain in their natal colony and failure to disperse is not directly attributable to habitat saturation or unfavourable soil conditions. A major dispersal event follows the death of a reproductive. Differences in colony cohesion, ethology and the hormonal profiles of non-reproductive animals suggests that eusociality evolved along different pathways in these two phylogenetically divergent genera of the Bathyergidae.