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Site specificity and movement of largemouth bass (Micropterus salmoides) in a thermally altered reservoir

Technical Report ·
OSTI ID:5944433
A mark-recapture experiment was conducted in Pond C, a thermally altered reservoir in the Par Pond system of the Savannah River Plant. The standing crop for bass spread throughout the reservoir was 2.7 to 3.8 kg/ha. From the length/mass relationships, for a given total length, Pond C bass weighed less than bass from other lakes and reservoirs and had a lower condition coefficient than bass from normal lakes and reservoirs. Bluegill (Lepomis macrochirus) were found, from the length/mass relationships, for a given length, to weigh less than bluegill in other lakes and reservoirs and also had a low condition coefficient which was similar to bluegill found in thermally impacted lakes and reservoirs. Thus, bluegill in Pond C and other thermally affected reservoirs, like bass, also suffer a loss of body condition due to the thermal and trophic stresses in these systems. The rate at which bass move out of the refuge areas (24 m per day) is lower than the rate at which bass move in other lakes and reservoirs. Bluegill move (23 m per day) out of the refuge areas at a rate similar to that of bass. 43 refs., 12 figs., 9 tabs.
Research Organization:
State Univ. of New York, Buffalo (USA). Dept. of Biology
DOE Contract Number:
FG02-87ER60529
OSTI ID:
5944433
Report Number(s):
DOE/ER/60529-T1; ON: DE87014994
Country of Publication:
United States
Language:
English