NATURAL SELECTION ON AVIAN BREEDING TIME: CAUSALITY, FECUNDITY-DEPENDENT, AND FECUNDITY-INDEPENDENT SELECTION
نویسندگان
چکیده
منابع مشابه
Natural selection on fecundity variance in subdivided populations: kin selection meets bet hedging.
In a series of seminal articles in 1974, 1975, and 1977, J. H. Gillespie challenged the notion that the "fittest" individuals are those that produce on average the highest number of offspring. He showed that in small populations, the variance in fecundity can determine fitness as much as mean fecundity. One likely reason why Gillespie's concept of within-generation bet hedging has been largely ...
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Fitness results from an optimal balance between survival, mating success and fecundity. The interactions between these three components of fitness vary depending on the selective context, from positive covariation between them, to antagonistic pleiotropic relationships when fitness increases in one reduce the fitness of others. Therefore, elucidating the routes through which selection shapes li...
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Insect herbivores often have higher densities on host plants grown in monocultures than those in diverse environments. The underlying mechanisms are thought to be that polyphagous insects have difficulty in selecting food or oviposition sites when multiple host plants exist. However, this hypothesis needs to be extensively investigated. Our field experiments revealed that the population of the ...
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ژورنال
عنوان ژورنال: Evolution
سال: 1997
ISSN: 0014-3820
DOI: 10.1111/j.1558-5646.1997.tb03974.x