Corbin D. Hilling

Environmental Correlates of Walleye Spawning Movements in an Appalachian Hydropower Reservoir

SEAFWA Journal Volume 10, March 2023

Understanding walleye (Sander vitreus) spawning behavior is important for managing walleye fisheries, but such information is limited for Appalachian reservoirs. We assessed spawning movements and spawning locations for a reestablished walleye population in Cheat Lake, West Virginia. We tagged fifty-two walleye with acoustic telemetry transmitters to evaluate environmental correlates associated with pre-spawn movements and to deter- mine spawning locations. Using an information-theoretic approach, we compared candidate logistic regression models to determine...

Natural Mortality and Size Structure of Introduced Blue Catfish in Virginia Tidal Rivers

SEAFWA Journal Volume 5, March 2018

In the 1970s and 1980s, blue catfish (Ictalurus furcatus) were introduced to the tidal rivers of Virginia. Current abundances and uncertainty about population characteristics of blue catfish generated concern for other economically important and imperiled species. We estimated natural mortality and size structure of blue catfish for four tidal river systems (i.e., James, Mattaponi, Pamunkey and Rappahannock). Using common empirical estimators with pooled data from the period 2002-2016, we calculated five estimates of natural mortality. Proportional size distributions were used to examine...