全球智库信息集成服务系统(G2TT): Size and the not-so-single sex: Disentangling the effects of size on sex allocation in hermaphrodites.

G2TT

来源类型	Article
规范类型	其他
DOI	10.1086/425624
	Size and the not-so-single sex: Disentangling the effects of size on sex allocation in hermaphrodites.
	Cadet C; Metz JAJ; Klinkhamer PGL
发表日期	2004
出处	The American Naturalist 164 (6): 779-792
出版年	2004
语种	英语
摘要	Sex allocation theory explains how size-related variations in male and female fitness may favor the evolution of size-dependent sex allocation in hermaphrodites. Although empirical studies show that sex allocation changes gradually with size in many species, theoretical studies tend to predict an abrupt sex reversal from one sex to the other, that is, single-sexed sequential hermaphrodites. We show that this discrepancy between data and theory collapses if one takes into account that size affects male and female fitness through distinct routes. Using the classification of budget (larger individuals spend a greater budget on reproduction) and direct (e.g., larger plants are taller and may disperse pollen more efficiently) effects of size suggested by Klinkhamer et al., we propose a simple general framework appropriately incorporating these two categories of size effects in male and female fitness expressions. Analytical and numerical results show that a gradual sex change is evolutionarily stable for a large set of parameter values. Sex reversal is selected only in the absence of budget effects of size. We provide further predictions on size-dependent sex allocation and assess the relative importance of budget and direct effect for creating different patterns.
主题	Adaptive Dynamics Network (ADN)
关键词	Sex allocation Simultaneous hermaphroditism Sequential hermaphroditism Sex change Size
URL	http://pure.iiasa.ac.at/id/eprint/7108/
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/128337
推荐引用方式 GB/T 7714	Cadet C,Metz JAJ,Klinkhamer PGL. Size and the not-so-single sex: Disentangling the effects of size on sex allocation in hermaphrodites.. 2004.