Influence of a heated effluent, season, and fish size of the prevalence and mean intensity of monogenean gill infestation in bluegills (Lepomis macrochirus) in Lake Monona, Dane County, Wisconsin, USA

Thesis/Dissertation · Thu Jan 01 04:00:00 EST 1987

OSTI ID:6822852

Harrison, M M

The influence of a heated effluent on the prevalence and mean intensity of gill infestation by monogeneans was negligible, while that of season and fish size was significant. Gills were examined from 822 bluegills, Lepomis macrochirus, taken during a 15-month period in three areas, the outfall area (OA) and two reference areas (RA I and RA II), of Lake Monona, Dane County, Wisconsin, USA. The OA, in a heated water effluent from the Madison Gas and Electric Company, was warmest. The RA II, farthest from the discharge, was coolest. Prevalence of monogenean gill infestation was 100% among bluegills taken from all three sampling areas during the entire sampling period. Mean intensity of monogenean gill infestation varied significantly with the time of year and size of fish, but not significantly among the OA, RA I and RA II for the same time of year and size class of fish. In all sampling areas the largest mean worm burdens occurred in June and July, and on bluegills 131-160 mm in total length, while the fewest appeared in January and on 39-70 mm fish.

• Research Organization: Wisconsin Univ., Madison (USA)
• OSTI ID: 6822852
• Country of Publication: United States
• Language: English

Related Subjects

560200* -- Thermal Effects
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ANIMALS
AQUATIC ORGANISMS
BIOLOGICAL EFFECTS
ELECTRIC UTILITIES
FEDERAL REGION V
FISHES
GAS UTILITIES
GILLS
INFECTIVITY
LAKES
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PATHOGENS
POLLUTION
PUBLIC UTILITIES
RESPIRATORY SYSTEM
SEASONAL VARIATIONS
SENSITIVITY
SURFACE WATERS
THERMAL EFFLUENTS
THERMAL POLLUTION
USA
VARIATIONS
VERTEBRATES
WISCONSIN