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Full-Text Articles in Behavior and Ethology
Evolution Of Acquiescence To Manipulation, Mauricio González-Forero
Evolution Of Acquiescence To Manipulation, Mauricio González-Forero
Doctoral Dissertations
A productive framework to study phenotypic evolution is based on the notion of ``inclusive fitness'', which considers how an individual's phenotype affects the fitness of other individuals. A promising extension of the notion of inclusive fitness is that of the ``extended phenotype'', which considers how an individual's phenotype affects its environment, including the phenotype of other individuals. Affecting another individual's phenotype is sometimes referred to as manipulation (which introduces indirect genetic effects). However, manipulated individuals may evolve resistance to manipulation, possibly reducing or eliminating the manipulated behavior (and the indirect genetic effects). In this dissertation I use mathematical modeling to …
The Causes And Consequences Of Individual Variation In Parental Care Behavior, Daniel P. Wetzel
The Causes And Consequences Of Individual Variation In Parental Care Behavior, Daniel P. Wetzel
Theses and Dissertations--Biology
Behavioral traits can be remarkably flexible depending on the conditions in which they are expressed, yet, in spite of this flexibility, persistent differences between individuals appear to limit the potential expression of behaviors. For example, despite evidence that parents provide variable amounts of parental care in response to changing environmental conditions, they also differ in the overall level of care they provide. I used a behavioral reaction norm approach to study individual variation in parental care behavior in free-living house sparrows (Passer domesticus). I investigated the nature of this variation by studying the relationship between different forms of …