全球智库信息集成服务系统(G2TT): Plasticity in resource allocation based life history traits in the Pacific oyster, Crassostrea gigas. I. Spatial variation in food abundance.

G2TT

来源类型	Article
规范类型	其他
DOI	10.1046/j.1420-9101.2003.00674.x
	Plasticity in resource allocation based life history traits in the Pacific oyster, Crassostrea gigas. I. Spatial variation in food abundance.
	Ernande B; Boudry P; Clobert J; Haure J
发表日期	2004
出处	Journal of Evolutionary Biology 17 (2): 342-356
出版年	2004
语种	英语
摘要	We investigated the quantitative genetics of plasticity in resource allocation between survival, growth and reproductive effort in Crassostrea gigas when food abundance varies spatially. Resource allocation shifted from survival to growth and reproductive effort as food abundance increased. An optimality model suggests that this plastic shift may be adaptive. Reproductive effort plasticity and mean survival were highly heritable, whereas for growth, both mean and plasticity had low heritability. The genetic correlations between reproductive effort and both survival and growth were negative in poor treatments, suggesting trade-offs, but positive in rich ones. These sign reversals may reflect genetic variability in resource acquisition, which would only be expressed when food is abundant. Finally, we found positive genetic correlations between reproductive effort plasticity and both growth and survival means. The latter may reflect adaptation of C. gigas to differential sensitivity of fitness to survival, such that genetic variability in survival mean might support genetic variability in reproductive effort plasticity.
主题	Adaptive Dynamics Network (ADN)
关键词	Genetic correlations Growth Marine bivalves Phenotypic plasticity Quantitative genetics Reproductive effort Resource allocation Spatial heterogeneity Survival Trade-offs
URL	http://pure.iiasa.ac.at/id/eprint/7106/
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/128335
推荐引用方式 GB/T 7714	Ernande B,Boudry P,Clobert J,et al. Plasticity in resource allocation based life history traits in the Pacific oyster, Crassostrea gigas. I. Spatial variation in food abundance.. 2004.