Diel pattern of emergence in grayling (Thymallus thymallus Linnaeus, 1758)
- 1 March 1990
- journal article
- research article
- Published by Canadian Science Publishing in Canadian Journal of Zoology
- Vol. 68 (3), 465-469
- https://doi.org/10.1139/z90-068
Abstract
The emergence rhythm of grayling fry (Thymallus thymallus) was studied under semi-natural rearing conditions, using special traps buried in the gravel. The diel pattern of emergence proved to be mainly diurnal, with a maximum just after sunrise. The discussion emphasizes the fact that this distinguishes the grayling from other salmonids, and since eggs are buried at a reduced depth, proposes the hypothesis that light conditions during development influence the daily pattern of emergence.This publication has 8 references indexed in Scilit:
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