Seinability of Channel Catfish, Blue Catfish, and Their F1, F2, F3, and Backcross Hybrids in Earthen Ponds

R. Dunham, B. Argue
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引用次数: 54

Abstract

Abstract Blue catfish Ictalurus furcatus were significantly easier to harvest by seining than channel catfish I. punctatus female channel catfish × male blue catfish F1 and F2 hybrids, channel catfish backcrosses, and blue catfish backcrosses (P < 0.05). The F1 hybrid was significantly easier to catch than channel catfish (P < 0.05). The F3 hybrid was significantly easier to catch than the F2 hybrid, channel catfish, and channel catfish backcrosses (P < 0.05). Individual epistatic recombination loss had a positive effect on percent fish caught in the first seine haul. Channel catfish additive genetic effects had a negative effect on ease of capture by seining. The more channel catfish genes present, the harder the fish was to catch.
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土塘沟槽鲶、蓝鲶及其F1、F2、F3和回交杂种的可性
网捕蓝鲶(Ictalurus furcatus)比斑点蓝鲶(I. punctatus)更容易捕获雌沟鲶×雄沟鲶F1和F2杂交、沟鲶回交和蓝鲶回交(P < 0.05)。F1杂交种比通道鲶鱼更易捕获(P < 0.05)。F3杂交种比F2杂交种、通道鲶鱼和通道鲶鱼回交更易捕获(P < 0.05)。个体上位重组损失对第一次围网渔获率有正向影响。河道鲶鱼加性遗传效应对围网捕捞的易捕获性有负向影响。通道鲶鱼基因越多,越难捕获。
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