SREL Reprint #0294




Preliminary Examination of Body Temperatures of Largemouth Bass (Micropterus salmoides ) from an Artificially Heated Reservoir

D. H. Bennett



Body temperatures of nearly 600 largemouth bass (Micropterus salmoides) from a 1,120 ha reservoir (Par Pond) receiving heated water from a nuclear reactor were measured from October 1969 to February 1970.  A study area was established at the entrance of the heated effluent and a control area at the outflow dam, approximately 4.8 km from the heated area.  Bass captured in the heated environment had significantly higher monthly body temperatures than those from the control areas.  Body temperatures of bass from the heated area ranged from 12.0 to 32.0C.  No correlation was found between body condition (K. factor) of bass from the heated environment and body temperature at capture suggesting fish either had a sufficient food supply to maintain their body condition at higher temperature or were temporarily emigrating to cooler areas.

 Keywords: Par Pond Reservoir System

SREL Reprint #0294

Bennett, D.H. 1971. Preliminary examination of body temperatures of largemouth bass (Micropterus salmoides) from an artificially heated reservoir. Archiv fuer Hydrobiologie 68:376-381.

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