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Age And Growth Of Black Crappie Pomoxis Nigromaculatus In Lake Anna, A Virginia Power Cooling Impoundment, Robert Mason Daniels
Age And Growth Of Black Crappie Pomoxis Nigromaculatus In Lake Anna, A Virginia Power Cooling Impoundment, Robert Mason Daniels
Master's Theses
A study of the age and growth of black crappie, Pomoxis nigromaculatus, was conducted in Lake Anna, Virginia, a cooling impoundment for Virginia Power's North Anna Power Station. Growth of the population in the reservoir was compared to that of the population in North Anna's Waste Heat Treatment Facility. Analysis of covariance (ANCOVA) using age as the covariate indicated the growth rate of the two populations did not differ significantly at the .05 level. The populations were combined and tests were conducted to determine differences in growth rates between the sexes. ANCOVA indicated the growth rates of males and females …
Apid Increase In Serum Calcium In Response To Stress In Pomoxis Nigromaculatus, Black Crappie, Severn Borden Churn
Apid Increase In Serum Calcium In Response To Stress In Pomoxis Nigromaculatus, Black Crappie, Severn Borden Churn
Master's Theses
Serum calcium levels were determined colorimetrically in Pomoxis nigromaculatus, the black crappie, subjected to rapid changes in temperature. Two experiments were conducted; in the first, fish were exposed to stress for 30 minutes before measuring serum calcium, and in the second, fish were exposed to stress for 5 minutes and returned to normal conditions for 25 minutes before measuring serum calcium. Condit ion (K-value) and sexual development were noted for the fish. Serum calcium increased in all stressed fish, regardless of sex, but higher serum calcium values were observed in stressed mature females than in stressed males or stressed immature …