Estimation of Bioenergetics Parameters for a Stunted Northern Pikeminnow Population of South Central British Columbia
Nathan Taylor*, Carl Walters
Identifiers and Pagination:Year: 2010
First Page: 110
Last Page: 121
Publisher Id: TOFISHSJ-3-110
Article History:Received Date: 25/05/2009
Revision Received Date: 07/10/2009
Acceptance Date: 09/10/2009
Electronic publication date: 3/6/2010
Collection year: 2010
open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: (https://creativecommons.org/licenses/by/4.0/legalcode). This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
We estimate bioenergetics parameters using length-age and mark-recapture data for a stunted population of Northern pikeminnow on the Bonaparte plateau, British Columbia using a seasonal reproduction, skeletal allocation model. We show that using field data alone it was possible to estimate food consumption rates, standard metabolic rate and metabolic Q10 parameters, the proportional increase in feeding rate per 10o C increase (Qc), but that prior parameter ranges must be specified. Using the estimated parameter set, we predict body sizes using warmer water temperatures from Cultis Lake, British Columbia and the John Day Reservoir, Columbia River. We show that surface temperature differences between the Bonaparte plateau, John Day reservoir and Cultus Lake alone are insufficient to explain very large under- predictions of body size for these areas. In addition to diet differences, fish are likely choosing between fine-scale temperature and food-density environments to optimize capture and metabolism of food.