Pup escorting in the communal breeding banded mongoose: behavior, benefits, and maintenance
Pup escorting in the communal breeding banded mongoose: behavior, benefits, and maintenance
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DOI：
10.1093/beheco/arh071
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发表时间：
2004-11-01
影响因子：
2.4
通讯作者：
Gilchrist, JS
中科院分区：
文献类型：
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作者：
Gilchrist, JS
在合作繁殖的物种中，帮手通常为后代提供食物，并在整个育雏或窝中分配食物。然而，在集体繁殖的带状猫鼬（Mungos mungo）中，一些群体成员在依赖期间护送个别幼崽，护送者总是与同一只幼崽联系，尽管不是所有幼崽都有护送者。本研究的目的是确定是否组成员积极照顾幼犬，幼犬受益于协会，护送或幼犬保持协会。成年带状猫鼬提供，保护，携带，梳理，并与幼崽玩耍。虽然护送喂幼仔比nonsockets，护送幼仔既不更大，也没有更好的条件比nonsockets在协会期间结束。尽管如此，护送的小狗更有可能生存的协会期间比nonscouched小狗，提供证据表明，照顾者赋予他们的收件人有益的影响。然而，接受者不太可能是护送者的遗传后代，因为是小狗维持了小狗-护送者的关系，而护送者，而不是表现出对提供配对小狗的偏好，遵循“喂养最接近的小狗”规则。虽然照顾者通过增加相关幼崽的存活率获得间接的健康益处，但缺乏亲属歧视意味着照顾者无法通过优先护送自己的后代或近亲的后代来最大化他们的健康。
In cooperatively breeding species, helpers typically provide food to offspring, and distribute food throughout the brood or litter. However, in the communal breeding banded mongoose (Mungos mungo), some group members escort individual pups during their period of dependence, and escorts consistently associate with the same pup, although not all pups have an escort. The aim of the present study was to determine whether group members actively care for pups, pups benefit from association, and escorts or pups maintain association. Adult banded mongooses provision, protect, carry, groom, and play with pups. Although escorts fed pups more than did nonescorts, escorted pups were neither larger nor in better condition than were nonescorted pups at the end of the association period. Nevertheless, escorted pups were more likely to survive the association period than were nonescorted pups, providing evidence that carers confer beneficial effects on their recipients. However, the recipients are unlikely to be the genetic offspring of the escort because it is the pup that maintains the pup-escort association, and escorts, rather than showing a preference for provisioning their paired pup, follow a "feed the closest pup" rule. Although carers gain indirect fitness benefits through increasing survival of related pups, the lack of kin discrimination means carers are unable to maximize their fitness by preferentially escorting their own offspring or the offspring of closer relatives.