Explaining phenotypic selection on plant attractive characters: male function, gender balance or ecological context?
نویسندگان
چکیده
منابع مشابه
Sex Selection and Gender Balance
We model parental sex selection and the equilibrium sex ratio. With intrinsic son preference, sex selection results in a male-biased sex ratio. This is ine¢ cient, due to a marriage market congestion externality. Medical innovations that facilitate selection increase ine¢ ciency. If son preference arises endogenously, due to population growth causing an excess of women on the marriage market, s...
متن کاملSex Selection and Gender Balance
We model parental sex selection and the equilibrium sex ratio. With intrinsic son preference, sex selection results in a male-biased sex ratio. This is ine¢ cient, due to a marriage market congestion externality. Medical innovations that facilitate selection increase ine¢ ciency. If son preference arises endogenously, due to population growth causing an excess of women on the marriage market, s...
متن کاملEcological limits to plant phenotypic plasticity.
Phenotypic plasticity is considered the major means by which plants cope with environmental heterogeneity. Although ubiquitous in nature, actual phenotypic plasticity is far from being maximal. This has been explained by the existence of internal limits to its expression. However, phenotypic plasticity takes place within an ecological context and plants are generally exposed to multifactor envi...
متن کاملParental Sex Selection and Gender Balance
We consider a society where parents prefer boys to girls, but also value grandchildren. Parental sex selection results in a biased sex ratio that is socially ine¢ cient, due to a congestion externality in the marriage market. Improvements in selection techniques aggravate the ine¢ ciency. These results are robust to allowing prices in the marriage market, if the market is subject to frictions. ...
متن کاملSelection on multiple characters
So far we’ve studied only the evolution of a single trait, e.g., height or weight. But organisms have many traits, and they evolve at the same time. How can we understand their simultaneous evolution? The basic framework of the quantitative genetic approach was first outlined by Russ Lande and Steve Arnold [2]. Let z1, z2, . . . , zn be the phenotype of each character that we are studying. We’l...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Proceedings of the Royal Society of London. Series B: Biological Sciences
سال: 2004
ISSN: 0962-8452,1471-2954
DOI: 10.1098/rspb.2003.2642