Theses and Dissertations
Issuing Body
Mississippi State University
Advisor
Schramm, Jr., L. Harold
Committee Member
Leopold, D. Bruce
Committee Member
Jackson, C. Donald
Committee Member
Hopper, George
Committee Member
Miranda, E. Leandro
Date of Degree
12-9-2011
Document Type
Graduate Thesis - Open Access
Major
Wildlife and Fisheries Science
Degree Name
Master of Science (M.S.)
College
College of Forest Resources
Department
Department of Wildlife, Fisheries and Aquaculture
Abstract
Stock assessment and behavioral studies are needed to identify habitat use and population dynamics of endangered pallid sturgeon Scahphirhynchus albus in the freelowing lower Mississippi River; however, effective sampling methods have not been evaluated. Trotlines and otter trawls were consequently fished year-round to determine the more effective gear and to determine effects of environmental variables on catch rates. Trotlines were more effective for catching large (> 600 mm FL) pallid sturgeon and neither gear was effective for catching small (100-600 mm FL) pallid sturgeon. Greater predicted probabilities of catching large pallid sturgeon with trotlines were in 9-19 °C water temperatures, 0.7-0.9 m s-1 surface current velocities, and in greater depths (up to 12 m). Results of this study provide information that can be used to maximize sampling efficiency.
URI
https://hdl.handle.net/11668/15393
Recommended Citation
Mirick, Patrick Peterson, "Evaluation of otter trawls and trotlines for catching pallid sturgeon in the freelowing lower Mississippi River" (2011). Theses and Dissertations. 2045.
https://scholarsjunction.msstate.edu/td/2045