全球智库信息集成服务系统(G2TT): Estimating reaction norms for age and size at maturation when age at first reproduction is unknown.

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来源类型	Article
规范类型	其他
	Estimating reaction norms for age and size at maturation when age at first reproduction is unknown.
	Barot S; Heino M; O'Brien L; Dieckmann U
发表日期	2004
出处	Evolutionary Ecology Research 6 (5): 659-678.
出版年	2004
语种	英语
摘要	We describe a novel method to estimate the probabilities of maturing at age as a function of size; these probabilities can often be interpreted as probabilistic reaction norms for age and size at maturation. Such estimations are useful for describing the maturation process independently of the processes of growth and mortality, and they can also help to disentangle phenotypic plasticity from evolutionary changes in maturation. The estimation method can be used when mature and immature individuals are representatively sampled over two consecutive seasons, even when maturing individuals are not distinguished. Confidence intervals are derived for the reaction norm parameters using a bootstrap approach. Using simulated data, the method is shown to be asymptotically unbiased and robust to moderate violations of the main simplifying assumptions. However, it is relatively sensitive to small sample sizes: the method is not robust when fewer than about 100 individuals (mature and immature) are sampled from a cohort at a certain age. The method is illustrated by an application to Georges Bank cod stock (Gadus morhua) but can be used for any type of organism.
主题	Adaptive Dynamics Network (ADN)
关键词	Maturation dynamics phenotypic plasticity probability of maturing reaction norm robustness assessment
URL	http://pure.iiasa.ac.at/id/eprint/7162/
来源智库	International Institute for Applied Systems Analysis (Austria)
资源类型	智库出版物
条目标识符	http://119.78.100.153/handle/2XGU8XDN/128385
推荐引用方式 GB/T 7714	Barot S,Heino M,O'Brien L,et al. Estimating reaction norms for age and size at maturation when age at first reproduction is unknown.. 2004.