Individual variation in the foraging strategies of young yellow perch (Perca flavescens) from the Ottawa River |
| |
Authors: | R. H. Ansari S. U. Qadri |
| |
Affiliation: | (1) Department of Biology, University of Ottawa, K1N 6N5 Ottawa, Ontario, Canada |
| |
Abstract: | Differences in the foraging strategies among young individuals of the yellow perch (Perca flavescens) were observed in the laboratory by using two kinds of food (Daphnia and brine shrimp) separately and together. Individuals differed significantly in their ability for feeding attempts, time interval between two consecutive feeding attempts, feeding angles, regurgitation rate, and number of unsuccessful attempts and in their food preference. It is concluded that there are individuals with different foraging strategies. Variability in foraging strategies within single species populations is important because it may explain how the conspecific individuals may differ in their overall feeding behaviour. |
| |
Keywords: | feeding patterns conspecifics Daphnia brine shrimp feeding angle feeding behaviour |
本文献已被 SpringerLink 等数据库收录! |
|