文章基本信息

标题：Life History, Secondary Production, and Trophic Basis of Four Dominant Mayflies in a Second Order Stream, Tanqigou Stream, China
本地全文：下载
作者：Yunjun Yan ; Jing Jiang ; Fangni Wen 等
期刊名称：Journal of Freshwater Ecology
印刷版ISSN：0270-5060
电子版ISSN：2156-6941
出版年度：2009
卷号：24
期号：1
页码：109-118
DOI：10.1080/02705060.2009.9664271
出版社：Taylor & Francis
摘要：Mayflies were investigated in a second-order montane stream of the Qingjiang River basin, among which Electrogena sp., Indobaetis sp., Choroterpes sp., and Caenis sp. were the dominant species, contributing 92.4% to the total mayfly standing stock. Electrogena sp., Choroterpes sp., and Caenis sp. all developed two generations per year, and there was little overlap with the two generations in each species. Indobaetis sp. had three generations a year. The average annual production of Electrogena sp., estimated by the size-frequency method, was 15.8 g (dry weight)/m 2 . Indobaetis sp. was 8.8 g/m 2 , Choroterpes sp. was 1.6 g/m 2 , and Caenis sp. was 0.9 g/m 2 . By foregut content analysis, we found that amorphous detritus was the most important food type, accounting for 77.8%-84. 4% of their diets and 62.0%-74.7% of their annual ingestion.