摘要
2 0 0 1年 3月至 7月对厦门白鹭自然保护区鸡屿岛的白鹭 (Egrettagarzetta)繁殖行为和繁殖力进行了研究 .白鹭集群、择巢、筑巢于 2月中旬至 3月中旬 ,3月底部分亲鸟开始产卵和孵化 ,4月中旬雏鸟开始出壳 .白鹭窝卵数为 4.43± 0 .6 8(SD)枚 ,孵化期为 2 3.2± 1.4d ,孵化率为 88.5 0 % ,窝雏数为 3.8± 0 .8只 ,育雏期 2 8～ 35d ,雏鸟成活率为 87.7% .每年每只白鹭的繁殖力为 1.96只雏鸟 ,每巢成功繁殖 3.37只雏鸟 .鸡屿岛白鹭繁殖前期的种群数量为 5 0 32只 ,繁殖结束时亲鸟和成活雏鸟数量共 135 0 6只 .本文分析影响白鹭繁殖的主要因素 。
From March to July in 2001, research on the breeding behaviour and reproductive capacity of the little egret, Egretta garzetta were made in the Jiyu islet in Xiamen Egret Natural Reserve. The little egrets began to group, select nest locality and build nest from mid-February to mid-March. And then they started to lay egg and incubate. In the mid-April the nestlings were hatched. The mean clutch size in little egret was 4.43±0.68 (SD), incubation period 23.2±1.4 d, incubation rate 88.50%, mean number of the nestlings was 3.8±0.8, nursing period around 28～35 d, and the survival rate of nestlings was 87.7%. The reproductive capacity of one little egret was 1.96 per year, and the survived nestlings for one nest was 3.37. The population size of little egret in the Jiyu islet was 5 032 in the early period of the breeding, and increased to 13 506 for the parents and survived juvenile at the end of the breeding. The main factors affected the breeding were analyzed, and some suggestion for the management and protection on little egret was made in this paper.
出处
《厦门大学学报（自然科学版）》
CAS
CSCD
北大核心
2002年第5期647-652,共6页
Journal of Xiamen University：Natural Science
基金
福建省自然科学基金 (D9910 0 0 3)资助项目
