摘要
对常熟尚湖风景区栖息的三种鹭鸟:夜鹭、小白鹭及池鹭的雏鸟食性、食物频次进行实验观察,结果是夜鹭、小白鹭雏鸟对鱼类的选择系数最大。池鹭雏鸟对昆虫的选择系数最大。三者食性有一定差异,故群栖混居互不影响。
The food habits of three nestling herons in Changshu Shàng lake,from April to July in 2000 were reported in the paper.Based on food habits,food diversity and similarity were compared.The nestling of black_crowned night heron were brought up with fish and amphibians.those of little egret were given with fish and shrimps,however,those of nestling of Chinese pond heron were fed with fish and insects.of the diets of the three species,nestling chinese pond heron had the widest one,little egret had the narrowest one.Nestling chinses pond teron had the highest preference to insects,but nestling little egret and nesthing black_crowned night heron had the highest preference to fish.Study on the food habits was important for us to manage herons and preserve bio_diversity.
出处
《常熟高专学报》
2003年第4期59-60,88,共3页
Journal of Changshu College
关键词
常熟市
尚湖
夜鹭
小白鹭
池鹭
雏鸟
食性
食物频次
食物多样性
相似性
nestling
chinese pond heron
little egret
black_crowned night heron
food habits
diversity
similarity
