Divorce in an Island Bird Population: Causes, Consequences, and Lack of Inheritance
Divorce in an Island Bird Population: Causes, Consequences, and Lack of Inheritance
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岛屿鸟类种群的离婚：原因、后果和遗传缺失
DOI：
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发表时间：
2017
影响因子：
2.9
通讯作者：
C. Teplitsky
中科院分区：
文献类型：
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作者：
N. T. Wheelwright;C. Teplitsky
离婚(换配偶)被广泛认为是雌鸟用来提高繁殖成功率的一种适应性策略。然而，很少有物种对离婚的原因和后果有很好的了解，离婚的遗传基础和遗传也从未被探索过。在加拿大新不伦瑞克州肯特岛繁殖的萨凡纳麻雀(Passerculus Sandwichensis)中，47.0%的配偶双方都能活到下一个繁殖季节以离婚告终。与第一代雌性相比，第二代雌性得到的父母帮助较少，当繁殖成功率较低或与体型较小的雄性配对时，往往会离婚。与年轻女性或寡妇不同，年长的女性在离婚后提高了她们羽翼未丰的成功。年轻男性(但不是老年男性)在离婚后生育成功率较低。然而，一生中离婚的次数或个人是否离婚都不会影响女性或男性的健康状况，这表明很少或根本没有对这一特征的选择。我们发现女性离婚的重复性中等(尽管男性不是)，但没有加性遗传变异或母亲或父亲影响的证据。在草原麻雀中，离婚似乎是一种不可遗传的灵活行为，其表达和后果取决于个体的性别、交配状态、体型和年龄。
Divorce (mate switching) is widely considered an adaptive strategy that female birds use to improve their reproductive success. However, in few species are the causes and consequences of divorce well understood, and the genetic basis and inheritance of divorce have never been explored. In Savannah sparrows (Passerculus sandwichensis) breeding on Kent Island, New Brunswick, Canada, 47.0% of pairs in which both partners survived to the following breeding season ended in divorce. Secondary females, which received less parental assistance than primary females, tended to divorce when breeding success was low or when paired with small males. Unlike young females or widows, older females improved their fledging success after divorce. Young males (but not older males) suffered lower reproductive success following a divorce. However, neither the lifetime number of divorces nor whether an individual had ever divorced affected the fitness of females or males, which suggests little or no selection for the trait. We found moderate repeatability for divorce in females (although not in males) but no additive genetic variance or evidence of maternal or paternal effects. Divorce in Savannah sparrows appears to be a nonheritable flexible behavior whose expression and consequences depend on an individual’s sex, mating status, size, and age.
影响因子：
3.3
作者：
D. Houle
通讯作者：
D. Houle
人格与离婚：基因分析。
影响因子：
7.6
作者：
Jocklin,V;McGue,M;Lykken,DT
通讯作者：
Lykken,DT