Individual behavior and higher-order species interactions
Article Abstract:
The effects of ecological and developmental factors on animal behaviors and the effects of these behaviors on higher-order interactions were investigated. Evidence was presented to show that behavioral responses falling under two classes of adaptive behavioral responses, choice of activity and choice of habitat, are determined by trade-offs between mortality risks and resource acquisition. These trade-offs could be used to predict individual behavior, and since trade-offs change with development, behavior would also change with development. These adaptive behavioral mechanisms should be considered in studies of species interactions.
Publication Name: The American Naturalist
Subject: Earth sciences
ISSN: 0003-0147
Year: 1992
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Food perishability and inventory management: a comparison of three caching strategies
Article Abstract:
Three food caching strategies are presented to determine the possibility of determining an optimal caching and inventory management strategy. An animal is expected to store as much of a particular food type as it could eat before the food declines in value. In the study, woodrats were observed to have considered the future quality of food to determine the composition of their cache. The study, however, did not reveal a single optimal strategy. Thus, it may be expected that animals tend to switch strategies depending on the particular food type present during a particular season.
Publication Name: The American Naturalist
Subject: Earth sciences
ISSN: 0003-0147
Year: 1995
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First-cohort advantage hypothesis: a new twist on facultative sex ratio adjustment
Article Abstract:
The first-cohort advantage hypothesis proposes that female opossums enhance their fitness by producing less females than males in their first litters when the second-cohort males suffer a mating disadvantage. Second-cohort male opossums are smaller than first cohort male opossums and achieve less mating levels during the first year of reproduction. Male reproductive success more than female reproductive success is affected by size.
Publication Name: The American Naturalist
Subject: Earth sciences
ISSN: 0003-0147
Year: 1995
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