Biology Commons^™

Seasonal Nearshore Distributions Of Fishes In A Piedmont Section Of The James River, Virginia, Eugene George Maurakis

Master's Theses

The seasonal nearshore distributions of 17 species of fishes were determined in natural and artificially heated areas in a 9.6 km stretch of the Piedmont section of the James River, Virginia from July, 1973 to June, 1974. Analyses of the seasonal distributions were based on abundance and percent frequency of occurrence data. The maximum abundance and percent occurrence of ten of the 17 species of fishes in natural temperature areas occurred in early autumn. Deviations from this pattern included Notropis analostanus, equally abundant throughout the year, and Lepisosteus osseus, Notropis amoenus, Notropis ardens, Notropis rubellus, Catostomus commersoni and Lepomis macrochirus, …

The Effects Of Coelomic Fluid And Isotonic Homogenates Of The Freshwater Bryozoan Lophopodella Carteri On Fish Tissue, Roger H. Meacham

Master's Theses

A study was made to determine if fish tissue was poisoned by the coelomic fluid extracted from the common coelomic cavity of colonies of the freshwater bryozoan, Lophopodella carteri (Hyatt). Additional studies were made of fish tissues, in vivo and in vitro, when exposed to homogenates of crushed colonies of L. carteri in isotonic medium.

The fish exposed to the coelomic fluid did not show any signs of respiratory distress and therefore the poisonous quality must be located elsewhere in the bryozoan. The homogenates were determined to be poisonous as fishes exposed to a 3.0% solution were killed within an …