Evidence for seasonal migrations of larvae of two species of philopotamid caddisflies (Trichoptera) in a mountain stream in lower Austria
作者:
Hans Malicky,
期刊:
Aquatic Insects
(Taylor Available online 1980)
卷期:
Volume 2,
issue 3
页码: 153-160
ISSN:0165-0424
年代: 1980
DOI:10.1080/01650428009361021
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
Field research with emergence traps suggests that the larvae ofPhilopotamus ludificatusandWormaldia copiosamigrate upstream in winter and downstream in summer. These migrations, which appear to be determined by daylenght are directed to reaches with relatively higher water temperatures. The term “cold‐stenothermous”; for mountain stream‐inhabiting caddisflies is discussed from this aspect.
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