Largemouth bass mortality and related causal factors during live-release fishing tournaments on a large Minnesota Lake.

摘要: Abstract We quantified initial and delayed mortality of largemouth bass Micropterus salmoides during live-release fishing tournaments identified probable causes death in order to provide a biological basis for refining tournament guidelines regulation. Mean estimates two on Lake Minnetonka, Minnesota, were 1.42% weigh-in mortality, 3.35% 3-d 4.72% total mortality. Catch rates May both over 1.5 times those September tournament, the difference presumably being related reproductive behavior condition. Tournament population was minimal relative other mortality; 1992 (11 tournaments) represented 2.3–6.3% angling 1.3–3.0% Minnetonka. Means all water quality variables measured live wells significantly different from lake water, differences greatest ammo...