Now showing items 1-10 of 83
Why be an hermaphrodite?
Ecological implications of resource depression
(American Naturalist, 1976-03)
A common but not universal consequence of the foraging activities of a predator is a lowering of capture rates with prey in its immediate vicinity. This may result from a number of different processes and need not require ...
When is sex environmentally determined?
Optimal foraging: The marginal value theorem
(Theoretical Population Biology, 1976-04)
Hunting by expectation or optimal foraging: A study of patch use by chickadees
(Animal Behaviour, 1974-10)
When a predator exploits an environment in which food is patchily distributed, it has to continually make the decision of how long to stay in a patch. In this paper we examine this question using black-capped chickadees ...
Optimal foraging: Attack strategy of a mantid
(American Naturalist, 1976-01)
Much recent theoretical work in foraging theory derives hypotheses from the general assumption that animals are "efficient" in their foraging activities. Useful reviews may be found in Krebs (1973), Schoener (1971), ...
Trade-off-invariant rules for evolutionarily stable life histories
Optimization models have been widely and succesfully used in evolutionary ecology to predict the attributes of organisms. Most such models maximize darwinian fitness in the face of trade-offs and constraints; the numerical ...
Evolution of life history variation among female mammals
A unified approach is developed for the evolutionary structure of mammalian life histories; it blends together three basic components (individual growth or production rate as a function of body size, natural selection on ...
The evolution of alarm calls: Altruism or manipulation?
(American Naturalist, 1975)
Maternal condition and facultative sex ratios in populations with overlapping generations.
(American Naturalist, 2006)
Facultative investment in offspring sex is related to maternal condition in many organisms. In mammals, empirical support for condition-dependent sex allocation is equivocal, and there is some doubt as to theoretical ...