A multivariate analysis of phenotype and paternity in male harbor seals, Phoca vitulina, at Sable Island, Nova Scotia
A multivariate analysis of phenotype and paternity in male harbor seals, Phoca vitulina, at Sable Island, Nova Scotia
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新斯科舍省塞布尔岛雄性斑海豹 (Phoca vitulina) 表型和亲子关系的多变量分析
DOI：
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发表时间：
1999
期刊：
影响因子：
--
通讯作者：
J. Wright
中科院分区：
文献类型：
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作者：
D. Coltman;W. Bowen;J. Wright
了解表型和繁殖成功之间的联系对于研究交配系统和生活史模式的进化至关重要。我们研究了加拿大塞布尔岛雄性斑海豹（Phoca vitulina concolour）的表型与交配成功率之间的关系。对八个特征的聚类分析，包括由遗传亲子关系分析确定的交配成功、拖拽行为、体重和质量变化，确定了四组具有不同特征的雄性。最成功的雄性体型适中，很少单独被发现，与岸上许多不同的群体有联系，而且在拖捞上相对较少被发现。以前被认为在社会上占主导地位的大型雄性经常独自外出，成功的可能性较小。体型较小、年轻的雄性也不太成功。与我们的假设相反，并且与大多数陆地繁殖的鳍足类动物不同，体型和繁殖努力与交配成功率并不呈正相关，并且一些成功的雄性似乎花费了大量时间在深水中觅食。
Understanding the links between phenotype and reproductive success is critical to the study of the evolution of mating systems and life-history patterns. We examined the relationship between phenotype and mating success of male harbor seals (Phoca vitulina concolour) at Sable Island, Canada. Cluster analyses of eight traits including mating success determined by genetic paternity analysis, haul-out behavior, body mass, and mass change identified four groups of males with distinct characteristics. The most successful males were of moderate body size, were rarely sighted alone, were associated with many different groups on shore, and were sighted on the haul-out relatively infrequently. Large males that hauled out frequently alone, previously thought to be socially dominant, were less likely to be successful. Also less successful were smaller, younger males. Contrary to our hypotheses, and unlike most terrestrially breeding pinnipeds, body size and reproductive effort were not positively associated with mating success, and some successful males appeared to spend considerable time foraging in deep water.
DOI：
10.1530/jrf.0.1070059
发表时间：
1996-05
期刊：
Journal of reproduction and fertility
影响因子：
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作者：
F. Bercovitch;P. Nürnberg
通讯作者：
F. Bercovitch;P. Nürnberg