Scholarship Document (Ichthyology) - Significant Variables...

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Significant Variables Affecting Tournament-Associated Mortality of Black Bass SpeciesTheEffect of Temperature, Elevation, Year, and Angler Hours on Tournament-Associated Mortalityof Black Bass SpeciesParker MoonZoelle ReinkeBIOL 3705 IchthyologyInstructor: Johnathan DavisNovember 27, 2016
AbstractThe objective of this study was to determine significant factors influencing mortality ofBlack Bass during competitive fishing tournaments held within the United States. Competitivetournaments (n = 63) were sampled in 6 states and Puerto Rico. To collect data, we searchedthrough numerous fisheries journals and collected data on 27 different variables of tournamentspotentially related to initial, delayed, or total mortality. Our results suggest that temperature (bothair and water temperature) is the most influential factor in determining mortality of tournamentcaught Black Bass. Additionally, angler hours, state, latitude, and elevation may affecttournament-caught Bass welfare. These results may be used to implement strategies andregulations that lower tournament-related mortality rates, promote Black Bass welfare duringcompetitive tournaments,and maintain healthy bass fisheries.IntroductionEach year in the United States many Largemouth Bass (Micropterus salmoides) andSmallmouth Bass (Micropterus dolomieu) tournaments are conducted. In 2000,there were nearly30,000 anglers who competed in tournaments at least once per year, and that number is growing.(Edwards 2003). In 2003, more than 20,000 individuals participated in at least one tournament inCalifornia alone(Edwards 2003).These tournaments provide a stimulus for local economies. Asingle tournament in Lake Fork, Texas generated $126,434 of which $101,061 was contributedby non-local tournament participants (Schlechte 2012). Another tournament contributed$177,533 to the area surrounding Sam Rayburn Reservoir in Texas (Schlechte 2012). Despite thepositive effect of tournaments on local economies, they often have a detrimental effect on
targeted Black Bass populations (Edwards 2004). Basses caught in catch and release tournamentsoften perish as a result of the stressors they are exposed to during angling, captivity, and weigh-in (Edwards 2004; Kwak 1995; Weathers 1997).Tournament-associated mortality is higher thanin non-tournament, catch-and-release fishing which, if fish are handled with care, can report amortality rate that is nearly zero (Kwak 1995). Tournament-associated mortality can account fora relatively high portion of total yearly mortality of bass populations on lakes with heavytournament pressure (Allen 2004). Thus, bodies of water with many tournaments per year couldexperience significant impacts to the health of the fishery (Edwards 2003).In a typical tournament, anglers attempt to catch the highest total weight for a set numberof fish over a one or two-day period. Fish are typically held in a live-well with other fish for upto 12 hours before being weighed at the end of the event. During confinement in live-wells and

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Term
Summer
Professor
NoProfessor
Tags
RNA, Ichthyology, Research Paper, Largemouth bass, mortality, Black bass, Catch and release, Centrarchidae

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