Paternal investment and reproductive success in the California mouse, Peromyscus californicus
Paternal investment and reproductive success in the California mouse, Peromyscus californicus
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DOI：
10.1006/anbe.1996.0583
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发表时间：
1997-08-01
期刊：
影响因子：
2.5
通讯作者：
Brown, RE
中科院分区：
文献类型：
--
作者：
Cantoni, D;Brown, RE
在双亲照料的物种中，每个亲本的父母投资程度可能与幼崽的大小、配偶的父母努力程度以及未来与同一伴侣繁殖成功的可能性有关。这些因素在单身雌性和配对的加州Permyscus calforNicus身上进行了测试，这些雌性和交配对的Permyscus calforNicus被要求通过在车轮上跑步来寻找食物。记录后代的存活和生长、亲代行为、在轮子上奔跑获得的食量和每窝之间的出生间隔。仅雌性就能生下两只幼崽，但不能养四只幼崽。交配的一对能够饲养一窝四只幼崽。单独由母亲抚养的一到两只幼崽的成长速度与双亲共同抚养的幼崽一样快。让幼崽存活的单亲雌性幼崽的平均出生间隔为53天；配对雌性幼崽的平均出生间隔为37天。这些结果表明，当父母必须觅食时，雄性父母的投资对繁殖成功的影响：在74天的时间里，雄性的存在导致的幼崽数量是雌性独自饲养的四倍。(C)1997年动物行为研究协会。
In species with biparental care, the degree of parental investment of each parent may be related to the size of the litter, the parental effort of the partner and the probability of future reproductive success with the same partner. These factors were examined in single females and mated pairs of Peromyscus californicus who were required to 'forage' for food by running in a wheel. Offspring survival and growth, parental behaviour, amount of food obtained by running in the wheel and inter-birth intervals between litters were recorded. Females alone were able to raise litters of two pups, but not four pups. Mated pairs were able to raise a litter of four pups. Litters of one or two pups reared with the mother alone grew as fast as pups reared with both parents. Single females that kept their pups alive had a mean inter-birth interval of 53 days; paired females had a mean inter-birth interval of 37 days. These results show the effect of male parental investment on reproductive success when parents must forage for food: the presence of the male resulted in four times as many pups reared over a 74-day period as a female could rear on her own. (C) 1997 The Association for the Study of Animal Behaviour.