摘要
作者报道了１９９６年４～７月紫蓬山区的池鹭、白鹭和夜鹭的繁殖行为和雏鸟的食性及生长。结果表明：巢前期三种鹭取食地点远离巢区；求偶方式主要有婚飞、显示饰羽、求偶喂食和象征性营巢行为；获得巢材的方式不同；异步产卵，异步孵化；雏出孵前，白鹭和夜鹭有迅速加固和扩大巢的行为；育雏期，取食大小随雏鸟日龄增大而增大，取食距离随雏期延长而缩短。三者雏鸟体重增长的数学模型分别为：ｗ＝２０５．１ｅ－（０．０６５ｅ）－０．０６５ｅ（ｔ－６．０），ｗ＝３２３．４ｅ－（０．０５８ｅ）－０．０５８ｅ（ｔ－６．６），ｗ＝５１９．３ｅ－（０．０４７ｅ）－０．０４７ｅ（ｔ－８．５）。雏鸟体重增长率都与成体体形的大小呈负相关。池鹭雏鸟的食物主要是鱼类和昆虫，白鹭雏鸟的食物主要是鱼类和甲壳类，夜鹭雏鸟的食物主要是两栖类和鱼类。首次报道了夜鹭以雏鸟和鼠类育雏。
This paper reports the breeding biology of Chinese Pond Heron , Little Egret and Blackcrowned Night Heron in Zipeng Mountains , Feixi County, Anhui Province in 1996 from April to July. The three species of herons collected food far away from the heronry before nesting.The males courted the females by means of nuptial flight, displaying nuptial feathers, feeding and courtship nesting. The three herons got the nest materials in different ways. They started incubation as soon as they laid eggs, so the eggs were asynchronously hatched.Little Egrets and Blackcrowned Night Herons reinforced and enlarged their nests before the nestilings hatched.The food sizes of the nestlings increased with the age of the nestlings. When the parental care periods lasted further,their parents looked for food closer and closer to the nest areas. Weight growth of the nestlings was fitted by following modles:w=205.10e-(0.065e)-0.065e(t-6.0) for Chinese Pond Heron,w=323.4e-(0.058e)-0.058e(t-6.6) for Little Egret, and w=519.3e-(0.047e)-0.047e(t-8.5) for Blackcrowned Night Heron.The growth rates of the three species of nestlings were negatively related to the body sizes. The food Components of the nestling Chinese Pond Herons consisted of Olipochaeta, Crustacea, Arachnoidea, Myriapoda,Insecta, Pisces and Amphibia, of which Pisces and Crustacea were richer. Those of the nestling Little Egrets covered Crustacea, Inesecta, Pices, Amphibia, of which Pisces and Crustacea were richer. Those of the nestling Blackcrowned Night Herons comprised Crustacea, Insecta, Pisces, Amphibia, reptilia, Aves and Mammalia, of which Pisces, Amphibia and Crustacea were richer. Nestlings and mice are reported as food of Blackcrowned Night Horen for the first time in China.
出处
《动物学杂志》
CAS
CSCD
北大核心
1998年第4期34-38,共5页
Chinese Journal of Zoology
关键词
三种鹭
繁殖行为
雏鸟生长模型
雏鸟食性
Breeding behavior Nestling growth Nestling food Ardeola bacchus Egretta garzetta Nycticorax nycticorax
