Temperature and Photoperiod Regulation of Rheotropic Behavior in Prespawning Common Shiners, Notropis cornutus
- 1 March 1977
- journal article
- research article
- Published by Canadian Science Publishing in Journal of the Fisheries Research Board of Canada
- Vol. 34 (3) , 341-346
- https://doi.org/10.1139/f77-055
Abstract
The upstream orientation and frequency of upstream movement of prespawning common shiners, N. cornutus in response to a water current simulated by moving a striped background past the fish were observed at 3 temperatures (10, 15, 20.degree. C) and 2 photoperiods (12L:12D and 16L:8D). The greatest frequency of upstream movement was induced by a combination of spring day lengths and warm water temperatures. Further increases in the frequency of upstream movement followed immediate 5.degree. C increases in water temperature. Neither temperature nor photoperiod had a major effect on the frequency of upstream orientation. The significance of environmental regulation of rheotropism as a mechanism of upstream migration is discussed.This publication has 1 reference indexed in Scilit:
- Life History of Redside Shiners, Richardsonius balteatus, with Particular Reference to Movements In and Out of Sixteenmile Lake StreamsJournal of the Fisheries Research Board of Canada, 1963