Reproductive investment when mate quality varies: differential allocation versus reproductive compensation
نویسندگان
چکیده
منابع مشابه
Reproductive investment when mate quality varies: differential allocation versus reproductive compensation.
Reproductive investment decisions form an integral part of life-history biology. Selection frequently favours plasticity in investment that can generate maternal effects on offspring development. For example, if females differentially allocate resources based on mate attractiveness or quality, this can create a non-genetic link between mate attractiveness and offspring fitness with potential co...
متن کاملMen's Reproductive Investment Decisions
Using questionnaire data completed by 170 men, we examine variation in paternal investment in relation to the trade-off between mating and parenting. We found that as men's self-perceived mate value increases, so does their mating effort, and in turn, as mating effort increases, paternal investment decreases. This study also simultaneously examined the influence on parental investment of men's ...
متن کاملReproductive investment within inflorescences of Stylidium armeria varies with the strength of early resource commitment.
BACKGROUND AND AIMS Resource allocation to flowers, fruits and seeds can vary greatly within an inflorescence. For example, distal fruits are often smaller and produce fewer and smaller fruits and seeds than more basal fruits. To assess the causes and functional significance of intra-inflorescence variation, pollen and resources were manipulated to test whether such patterns could be altered wi...
متن کاملThe hypothesis of reproductive compensation and its assumptions about mate preferences and offspring viability.
The Compensation Hypothesis says that parents and prospective parents attempt to make up for lowered offspring viability by increasing reproductive effort to produce healthy, competitive offspring and by increasing investment in less viable, but still-living progeny (parental effects). The hypothesis assumes that offspring viability is lower when individuals are constrained (often through sexua...
متن کاملWhen reproductive biology becomes political
The name of the 30th president of the USA, Calvin Coolidge (1872–1933), has become intimately linked to the reproduction of farmyard chickens (Gallus gallus domesticus), and of other vertebrates. Legend has it that during a visit to a farm, Mrs Coolidge became interested in the question how frequently a rooster can copulate, whereupon the president established that the dominant male will deligh...
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ژورنال
عنوان ژورنال: Philosophical Transactions of the Royal Society B: Biological Sciences
سال: 2009
ISSN: 0962-8436,1471-2970
DOI: 10.1098/rstb.2008.0299