Density and extra-pair fertilizations in birds: a comparative analysis
Density and extra-pair fertilizations in birds: a comparative analysis
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DOI：
10.1007/s002650050381
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发表时间：
1997-10
影响因子：
2.3
通讯作者：
D. Westneat;P. Sherman
中科院分区：
文献类型：
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作者：
D. Westneat;P. Sherman
Møller 和 Birkhead (1992, 1993) 报告称，群居鸟类中的配对外交配 (EPC) 发生频率高于分散筑巢的鸟类。我们全面审查了已发表的数据，以研究繁殖密度如何影响配对外受精（EPF）。在物种内，EPF 似乎随着密度的增加而增加：三分之二的关于群体繁殖者的研究和八分之六的关于分散筑巢者的研究表明，EPF 随密度的增加而增加。然而，物种之间的比较（n= 72）表明没有证据表明EPF频率与（1）筑巢分散度、（2）当地繁殖密度或（3）繁殖同步性相关，即使这些变量中的每一个依次保持不变并且通过对比分析考虑了系统发育关系。讨论了 EPC 观察研究与 EPF 分子遗传学分析之间差异的方法学和生物学原因。
Møller and Birkhead (1992, 1993) reported that extra-pair copulations (EPCs) occur more frequently in colonial than dispersed nesting birds. We comprehensively reviewed published data to investigate how breeding density affects extra-pair fertilizations (EPFs). Within species EPFs appeared to increase with density: two of three studies on colonial breeders and six of eight on dispersed nesters showed increases in EPFs with increasing density. However, comparisons among species (n= 72) revealed no evidence that EPF frequencies correlated with (1) nesting dispersion, (2) local breeding density, or (3) breeding synchrony, even when each of these variables in turn was held constant and phylogenetic relationships were taken into account via contrast analyses. Methodological and biological reasons for the disparity between observational studies of EPCs and molecular genetic analyses of EPFs are discussed.