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The effect of temperature on growth of juvenile bloater

Journal of Great Lakes Research

By:
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Abstract

The bloater (Coregonus hoyi), which feed mainly on invertebrates and in turn is eaten by lake trout (Salvelinus namaycush) and burbot (Lota lota), is a major trophic integrator in coldwater ecosystems in the upper Great Lakes. To better understand their thermal niche and habitat distribution, we acclimated groups of yearling bloater to 3, 5, 10, 20, or 25A?C and then fed them ad libitum for 35 days. Bloater increased in length and weight at all of the test temperatures and at the end of the study were heaviest and longest at 15-20A?C. The specific growth rate was highest at 20 deg C and progressively lower at 15, 25, 10, 5, and 3A?C. A curve fitted to the specific growth rate data indicated that the optimum temperature for growth was 18.6A?C. Our results are in agreement with other published information on the thermal ecology of juvenile bloater.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
The effect of temperature on growth of juvenile bloater
Series title:
Journal of Great Lakes Research
Volume
23
Issue:
4
Year Published:
1997
Language:
English
Contributing office(s):
Great Lakes Science Center
Description:
p. 468-471
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Journal of Great Lakes Research
First page:
468
Last page:
471