...在乌克兰草原上，遇干旱年份旱生植物（针茅、草及羊茅等）占优势，草原旅鼠（Lagurus lagurus）和社会田鼠（Microtus socialis）也繁盛起来；而在气温较高且降水较丰富的年份，群落以中生植物占优势，同时喜湿性动物如普通田鼠与林姬鼠增多。 ?
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雄性田鼠与他们的同性兄弟的分离并没有显示任何类似的症状，这意味着上述反应是特异于伴侣间分离的而不只是由于社会孤立。
Males that had been separated from their male siblings did not display any of these symptoms, implying the response was tied specific-ally to mate separation, not just social isolation.
田鼠的一夫一妻行为表现为紧密的社会性依附与照顾后代的意愿的结合。
Monogamy in voles takes the form of a deep social attachment combined with a willingness to care for offspring.
草原田鼠作为一种社会性生物，它是仅存3%的“一夫一妻制”哺乳动物中的一类。
The prairie vole is a sociable creature, one of the only 3% of mammal species that appear to form monogamous relationships.
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