Adaptation to sea level rise: does local adaptation influence the demography of coastal fish populations?

被引:8
|
作者
Purcell, K. M. [1 ]
Klerks, P. L. [1 ]
Leberg, P. L. [1 ]
机构
[1] Univ Louisiana Lafayette, Dept Biol, Lafayette, LA 70504 USA
基金
美国国家环境保护局;
关键词
Gambusia; Poeciliidae; salinity stress; saltwater intrusion; NEKTON USE; ASSEMBLAGE STRUCTURE; SALINITY TOLERANCE; GAMBUSIA-AFFINIS; ESTUARINE FISH; GENETIC-BASIS; SALT MARSHES; LOUISIANA; IMPACTS; VEGETATION;
D O I
10.1111/j.1095-8649.2010.02727.x
中图分类号
S9 [水产、渔业];
学科分类号
0908 ;
摘要
This study compared the growth of two western mosquitofish Gambusia affinis populations that were previously demonstrated to have genetic adaptations that increased survival under lethal salinity exposures. The objective was to evaluate how genetic adaptations to lethal salinity stress affect population demography when exposed to sublethal salinity stress. Results indicate that chronic salinity exposure had a generally negative impact on population size, but fish originating from one of the two populations established with fish from a brackish site exhibited an increase in population size. Saltwater intrusion seems to result in reduced population size for most populations. Some populations inhabiting more saline sites, however, may develop localized adaptations, mitigating the consequences of increased salinity on population productivity.
引用
收藏
页码:1209 / 1218
页数:10
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