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Parental investment and offspring sex ratios in house sparrows, Passer domesticus and cattle egrets, Bubulcus ibis.
(1998)
Fisher (1930) argued that parents should invest equally in the two sexes. Since then, others have proposed conditions under which parents might be selected to bias their investment in favor of either sons or daughters. I ...
Evolutionary and environmental effects on thermoregulation among complex lizard communities.
(2002)
A community of ten sympatric lizard species was studied in a mountain canyon in southern Arizona to determine the effect of phylogeny on habitat use and thermoregulation. Habitat use, body temperatures ( Tb) and operative ...
Community ecology of water-filled tree holes in Panama.
(1999)
Water-filled tree holes are phytotelmata formed when rain collects in branch crotches and other wood-lined cavities. Repeated surveys of natural and artificial water-filled tree holes on Barro Colorado Island (BCI), Panama, ...
Distribution and occurrence of carnivores in the Oklahoma panhandle.
(2000)
Five carnivore species representing three families were detected sufficiently to permit analysis. Carnivores were, in general, not distributed evenly over regional, landscape and local scales in the panhandle environment. ...
Ecological context and the evolution of mating biases in a freshwater amphipod species complex.
(2007)
Mating traits are among the most extravagant traits found in nature. As with any trait, understanding the diversification of mating traits requires information on both direct and indirect selection acting on the traits and ...
Sexual selection in a livebearing fish with a coercive mating system (western mosquitofish, Gambusia affinis).
(2006)
The livebearing fishes of the genus Gambusia are quickly becoming a model system to test alternative mechanisms of sexual selection in the form of coercive mating. I investigated effects of male and female body size, and ...
Environmental constraints regulating the distribution and abundance of small mammals.
(1999)
I computed 15 landscape variables at four different scales (40 variables total). Cluster analysis of these weighted data produced three multispecies clusters based on associations of species distributions and abundances ...
Status and ecology of Sotalia fluviatilis in the Cayos Miskito Reserve, Nicaragua.
(1999)
In March through May of 1996--98 we conducted research in the Cayos Miskito Reserve, Nicaragua to assess the status, ecology and distribution of Sotalia fluviatilis, a dolphin known from southern Brazil to Honduras. Surveys ...
Correlates of extra-pair paternity and the effects of ectoparasites on nestling growth, parental provisioning and reproductive success in the house sparrow.
(2000)
In addition, I looked at another aspect of the reproductive biology of the House Sparrow, the effects of ectoparasites on nestling growth, parental provisioning and reproductive success. To determine whether Pellonyssus ...
Endocrine mediation of alternative mating tactics in toads: A proximate perspective on ecological patterns and sexual selection.
(2005)
Male Great Plains toads (Bufo cognatus) and Woodhouse's toads (Bufo woodhousii) alternate between one of two mating tactics; they may either vocalize to attract mates or they may adopt a non-calling "satellite" tactic. ...