全球智库信息集成服务系统(G2TT): Harvest-induced maturation evolution under different life-history trade-offs and harvesting regimes.

G2TT

来源类型	Article
规范类型	其他
DOI	10.1016/j.jtbi.2011.03.001
	Harvest-induced maturation evolution under different life-history trade-offs and harvesting regimes.
	Poos JJ; Brannstrom Å; Dieckmann U
发表日期	2011
出处	Journal of Theoretical Biology 279 (1): 102-112
出版年	2011
语种	英语
摘要	The potential of harvesting to induce adaptive changes in exploited populations is now increasingly recognized. While early studies predicted that elevated mortalities among larger individuals select for reduced maturation size, recent theoretical studies have shown conditions under which other, more complex evolutionary responses to size-selective mortality are expected. These new predictions are based on the assumption that, owing to the trade-off between growth and reproduction, earlier maturation implies reduced growth. Here we extend these findings by analyzing a model of a harvested size-structured population in continuous time, and by systematically exploring maturation evolution under all three traditionally acknowledged costs of early maturation: reduced fecundity, reduced growth, and/or increased natural mortality. We further extend this analysis to the two main types of harvest selectivity, with an individual's chance of getting harvested depending on its size and/or maturity stage. Surprisingly, we find that harvesting mature individuals not only favors late maturation when the costs of early maturation are low, but promotes early maturation when the costs of early maturation are high. To our knowledge, this study therefore is the first to show that harvesting mature individuals can induce early maturation.
主题	Evolution and Ecology (EEP)
关键词	Fisheries-induced evolution Adaptive dynamics Size structure Harvesting Life-history trade-offs
URL	http://pure.iiasa.ac.at/id/eprint/9624/
来源智库	International Institute for Applied Systems Analysis (Austria)
引用统计
资源类型	智库出版物
条目标识符	http://119.78.100.153/handle/2XGU8XDN/129335
推荐引用方式 GB/T 7714	Poos JJ,Brannstrom Å,Dieckmann U. Harvest-induced maturation evolution under different life-history trade-offs and harvesting regimes.. 2011.