...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Ethology >Lactating females do not discriminate between their own young and unrelated pups in the communally breeding rodent, Octodon degus.
【24h】

Lactating females do not discriminate between their own young and unrelated pups in the communally breeding rodent, Octodon degus.

机译：在共同繁殖的啮齿动物Octodon degus中，哺乳期的雌性不会区分自己的幼崽和无关的幼崽。

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Females in numerous rodent species engage in communal nesting and breeding, in which they share one or more nests to rear their young. A potential cost of communal nesting and breeding is that mothers divert resources to unrelated offspring. One way mothers could avoid this cost is to recognize and favour their own young over unrelated offspring when allocating maternal effort. We assessed whether female degus (Octodon degus), a communally nesting and breeding caviomorph rodent, discriminate between their own and unrelated offspring during lactation. Female degus previously have been shown to distinguish between their own and unrelated pups when exposed to odours from both. We measured pup discrimination based on differences in the retrieval behaviour of females that were in early or intermediate lactation directed towards their own and unrelated offspring; offspring presented were of similar or different age. Before any event of pup retrieval, lactating females spent similar amounts of time and interacted to a similar extent with their own and unrelated pups. During pup retrieval, all lactating females transported both pups to the nest. Neither relatedness to pups, nor pup-age differences, influenced the order in which pups were retrieved to the nest. Dams waited similar amounts of time before retrieving the first pup when the first transported young was their own or unrelated. Likewise, females waited similar amounts of time before retrieving the second pup when the pup transported first was their own or unrelated. The time between first and second pup transport events was longer when dams were in early when compared with intermediate lactation, but only when pups were of similar age. All experimental subjects nursed unrelated pups after they were retrieved. Collectively, our results do not support the hypothesis that communally breeding female degus use their recognition ability to discriminate against unrelated offspring in favour of their own young..
机译：许多啮齿动物物种中的雌性参与公共筑巢和繁殖，在这些雌性中，它们共享一个或多个巢以抚养幼虫。集体筑巢和繁殖的潜在成本是母亲将资源转移给无关的后代。母亲可以避免这种花费的一种方法是，在分配孕产妇的努力时，要认识并青睐自己的年轻人而不是无关的后代。我们评估了雌性天牛（Octodon degus）（一种共同筑巢和繁殖的豚形啮齿动物）在哺乳期间是否能区分自己的后代和无关的后代。雌性degus先前已显示出，当它们暴露于两种气味时，它们会区分它们自己的和无关的幼崽。我们根据雌性在哺乳初期或中期针对其自身和无关亲缘后代的取回行为上的差异来测量幼崽的辨别力。呈现的后代年龄相似或不同。在发生幼犬恢复活动之前，哺乳期的雌性花费了相似的时间，并且与自己和无关的幼犬进行了相似程度的互动。在幼犬取回过程中，所有哺乳期雌性都将两只幼犬运送到巢中。与幼崽的亲缘关系或幼崽的年龄差异都不会影响幼崽被带到巢中的顺序。当第一个运输的幼仔是自己的或无关的时，大坝在取回第一个幼仔之前等待了相似的时间。同样，当第一次运输的幼犬是自己的或无关的时，雌性在取回第二只幼犬之前等待了相似的时间。与中间哺乳期相比，当大坝在早期时，第一次和第二次幼仔运输事件之间的时间更长，但是只有在幼仔年龄相似的时候。所有实验对象在取回无关的幼崽后均进行护理。总体而言，我们的结果不支持这样的假设，即在公共场合繁殖的雌性天牛使用其识别能力来区分无关的后代，而有利于自己的后代。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号