Daily Ration of Yellow Perch (Perca flavescens) from Lake Memphremagog, Quebec–Vermont, with a Comparison of Methods for In Situ Determinations
- 1 December 1978
- journal article
- research article
- Published by Canadian Science Publishing in Journal of the Fisheries Research Board of Canada
- Vol. 35 (12), 1597-1603
- https://doi.org/10.1139/f78-249
Abstract
In situ estimates of daily ration for yellow perch (Perca flavescens) [in Lake Memphremagog, Canada, USA] range from a high of 5.5-6.7% body wt in July to a low of 2.2-2.4% body wt in Oct. The seasonal pattern corresponded well to known patterns of growth. Comparison of 3 methods for in situ determination of daily ration levels indicated the method outlined here and the more complex method of Thorpe yield similar results. The method of Keast and Welsh and derivatives of this method which correct for digestion between sampling periods gave unreliable values that are 50% below the other 2 and, in general, were below maintenance ration levels. Diet composition and feeding activity varied seasonally and with body size.This publication has 4 references indexed in Scilit:
- Production of Chironomus, Procladius, and Chaoborus at Different Levels of Phytoplankton Biomass in Lake Memphremagog, Quebec–VermontJournal of the Fisheries Research Board of Canada, 1977
- Distribution, Abundance, and Resource Utilization of Littoral Zone Fishes in Response to a Nutrient/Production Gradient in Lake MemphremagogJournal of the Fisheries Research Board of Canada, 1977
- Daily ration of adult perch, Perca fluviatilis L. during summer in Loch Leven, ScotlandJournal of Fish Biology, 1977
- Daily Feeding Periodicities, Food Uptake Rates, and Dietary Changes with Hour of Day in Some Lake FishesJournal of the Fisheries Research Board of Canada, 1968