厦门大学学报（自然科学版）2016，Vol.55Issue(4)：510-514,5.DOI:10.6043/j.issn.0438-0479.201512020
黄嘴白鹭初雏性比与窝卵数之间的变化规律
Hatching Sex Ratio Varied with Clutch Size in the Vulnerable Chinese Egret (Egretta eulophotes)
摘要
Abstract
This study used a molecular sexing technique to investigate the hatching sex ratio in the vulnerable Chinese egret (Egret-ta eulophotes)for the first time,and examined the variation of hatching sex ratio in relation to clutch size in this altricial bird.The hatching sex ratio of the Chinese egret was unbiased in the whole population (47.37% males,p=0.37).In this egret,the mean clutch size was 3.71±0.09 (n=109),and four-egg occurred frequently in clutches (57.80%).However,there was a significant ex-cess of males in three-egg clutches (69.23% males,p=0.02),whereas deficit in five-egg clutches (31.43% males,p=0.04),but no deviation from parity for four-egg clutches (44.23% males,p=0.17).The three-egg clutch category differed significantly from four-egg (p=0.005)and five-egg (p=0.001)clutch categories in hatching sex ratios,whereas the latter two clutch-size categories did not significantly differ from each other (p=0.17).These results confirm that the Chinese egret has the sex allocation mechanism specific in altricial birds,that is,the hatching sex ratio varies with clutch size.关键词
初雏性比/窝卵数/黄嘴白鹭/性双态/鹭科鸟类Key words
hatching sex ratio/clutch size/Egretta eulophotes/sexually dimorphic/Ardeidae分类
生物科学引用本文复制引用
雷威,林清贤,陈小麟..黄嘴白鹭初雏性比与窝卵数之间的变化规律[J].厦门大学学报（自然科学版）,2016,55(4):510-514,5.基金项目
国家自然科学基金(41476113,31272333) （41476113,31272333）
科技部科技基础性工作专项(2015FY110200) （2015FY110200）
福建省科技创新平台项目(2010Y2007) （2010Y2007）
