Maternal age at maturation underpins contrasting behavior in offspring.
Maternal age at maturation underpins contrasting behavior in offspring.
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DOI：
10.1093/beheco/arw073
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发表时间：
2016-09
期刊：
影响因子：
--
通讯作者：
Metcalfe NB
中科院分区：
文献类型：
--
作者：
Burton T;Robertsen G;Stewart DC;McKelvey S;Armstrong JD;Metcalfe NB
在自然界中，不同年龄的母亲所生的婴儿在生长或大小上经常存在巨大差异。然而，我们不知道年轻母亲和年老母亲所生的后代之间是否存在其他更微妙的差异。在大西洋鲑鱼，我们发现，尽管是相似的大小，青少年从幼鱼成熟的母亲更具侵略性，但穷人在竞争食物比青少年从老成熟的母亲在物种中，父母的照顾主要是通过提供鸡蛋，年长的女性往往产生较大的后代，有更好的健身前景。然而，值得注意的是，母亲的年龄和后代的健康之间的关系也被报道独立于对后代大小的影响，这表明可能有其他因素在起作用。在这里，使用野生大西洋鲑鱼，在他们的性成熟的年龄不同的实验交配，我们展示了不同的大小无关的变化，在他们的后代的行为是有关的成熟年龄的母亲（但不是父亲）。我们发现，当幼鲑争夺喂养领土，早熟母亲的后代比晚熟母亲的更具侵略性，但他们的食物竞争。这是第一次证明父母成熟年龄的自然变化与后代行为变化之间的联系。
In nature, vast differences in growth or size are frequently observed among young born to mothers of different age. However, it is unknown if there can be other, more subtle differences among offspring born to young versus old mothers? In Atlantic salmon, we reveal that despite being similar in size, juveniles from younger-maturing mothers are more aggressive, but poorer at competing for food than juveniles from older-maturing mothers In species where parental care occurs primarily via the provisioning of eggs, older females tend to produce larger offspring that have better fitness prospects. Remarkably however, a relationship between age of mother and fitness of offspring has also been reported independently of effects on offspring size suggesting that there may be other factors at play. Here, using experimental matings between wild Atlantic salmon that differed in their age at sexual maturation, we demonstrate distinct size-independent variation in the behavior of their offspring that was related to the maturation age of the mother (but not the father). We found that when juvenile salmon were competing for feeding territories, offspring of early-maturing mothers were more aggressive than those of late-maturing mothers, but were out-competed for food by them. This is the first demonstration of a link between natural variation in parental age at maturation and variation in offspring behavior.
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影响因子：
4.8
作者：
Burton, Tim;McKelvey, S.;Metcalfe, N. B.
通讯作者：
Metcalfe, N. B.
影响因子：
4.8
作者：
Bohlin, T;Pettersson, J;Degerman, E
通讯作者：
Degerman, E
影响因子：
4.5
作者：
GJERDE, B
通讯作者：
GJERDE, B
影响因子：
3.3
作者：
Eising, Corine M.;Muller, Wendt;Groothuis, Ton G. G.
通讯作者：
Groothuis, Ton G. G.
影响因子：
3.5
作者：
Curley, James P.;Mashoodh, Rahia;Champagne, Frances A.
通讯作者：
Champagne, Frances A.