期刊
JOURNAL OF ZOOLOGY
卷 304, 期 2, 页码 117-123出版社
WILEY
DOI: 10.1111/jzo.12501
关键词
ADCYAP1; CLOCK; NPAS2; breeding phenology; egg-laying date; candidate gene; gene polymorphism; Larus michahellis
类别
In species living in seasonally variable environments, the ability to synchronize the timing of breeding with the peak of critical resources is under positive selection within populations. The temporal scheduling of animal annual cycle is controlled by endogenous rhythms, which are set by circadian clock' genes. Many studies have supported the hypothesis that length polymorphism in some phenological genes' is associated with differences in the photoperiodic responses among individuals and populations. However, evidence is inconsistent across species, genes and phenological traits. Among birds, there is a dearth of knowledge concerning the gene-phenotype association in non-migratory species. To contribute filling this gap, here we analyzed clutch initiation date of females of a species resident at temperate latitudes, the yellow-legged gull (Larus michahellis), in relation to the length polymorphism at four loci previously associated with breeding and migration phenology in other species: Adcyap1 and Npas2 genes, as well as two regions of the Clock gene. Although polymorphism was observed at three loci, allele size of the candidate genes seems not to predict the timing of breeding in females. In addition, similar genotype frequencies of all the analyzed genes were observed in early compared to late breeding females. Our results therefore suggest that the associations between photoperiodic candidate genes and breeding phenotype are not general across species and might represent adaptations of individual populations to the local environment.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据