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Thermal Preferenda of Northern, Florida, and Reciprocal F 1 Hybrid Largemouth Bass
Author(s) -
Koppelman Jeffrey B.,
Whitt Gregory S.,
Philipp David P.
Publication year - 1988
Publication title -
transactions of the american fisheries society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.696
H-Index - 86
eISSN - 1548-8659
pISSN - 0002-8487
DOI - 10.1577/1548-8659(1988)117<0238:tponfa>2.3.co;2
Subject(s) - micropterus , acclimatization , bass (fish) , subspecies , biology , hybrid , ecology , fishery , environmental science , zoology , botany
Four genetically confirmed stocks of largemouth bass Micropterus salmoides (northern and Florida subspecies and both reciprocal subspecific F 1 hybrids) were evaluated to assess their thermoregulatory behavioral differences. Acute testing methods were used to determine thermal preferenda at seven acclimation temperatures ranging from 8 to 32°C. Linear regression analyses of these data demonstrated that preferred temperature varied with acclimation temperature, However, there were no significant differences in the final preferred temperature observed among the stocks during either the spring or the fall testing period. This similarity among final preferred temperatures indicates that these determinations may not be appropriate predictors of temperatures that govern other temperature‐dependent physiological characteristics, such as reproduction and optimal growth.