Sustaining fisheries yields over evolutionary time scales

被引:699
作者
Conover, DO [1 ]
Munch, SB [1 ]
机构
[1] SUNY Stony Brook, Marine Sci Res Ctr, Stony Brook, NY 11794 USA
关键词
D O I
10.1126/science.1074085
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
Fishery management plans ignore the potential for evolutionary change in harvestable biomass. We subjected populations of an exploited fish (Menidia menidia) to large, small, or random size-selective harvest of adults over four generations. Harvested biomass evolved rapidly in directions counter to the size-dependent force of fishing mortality. Large-harvested populations initially produced the highest catch but quickly evolved a lower yield than controls. Small-harvested populations did the reverse. These shifts were caused by selection of genotypes with slower or faster rates of growth. Management tools that preserve natural genetic variation are necessary for long-term sustainable yield.
引用
收藏
页码:94 / 96
页数:3
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