Journal ArticleDOI
The Ecological Significance of Sexual Dimorphism in Size in the Lizard Anolis conspersus.
TLDR
Anolis conspersus selects prey from a wide range of taxa and shows no obvious intraspecific specialization not connected to differences in microhabitat and prey size.Abstract:
Adult males of Anolis conspersus capture prey of significantly larger size and occupy perches of significantly greater diameter and height than do adult females; similarly, these three dimensions of the niche are significantly larger for adult females than for juveniles. Adult males on the average eat a smaller number of prey, and the range in size of prey is larger. The relationship between the average length of the prey and that of the predator is linear when the predator size is above 36 millimeters, but becomes asymptotic when it is below that value. Subadult males as long as adult females eat significantly larger food than do the latter, but only in the larger lizards is this correlated with a relatively larger head. Anolis conspersus selects prey from a wide range of taxa and shows no obvious intraspecific specialization not connected to differences in microhabitat and prey size. The efficiency of this system for solitary species is pointed out.read more
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Sexual selection and the descent of man, 1871-1971
TL;DR: In the first full discussion of sexual selection since 1871, leading biologists brought modern genetic theory and behavior observation to bear on the subject as mentioned in this paper, and the result is a remarkably original and well-rounded view of the whole concept that will be invaluable especially to students of evolution and human sexual behavior.
Journal ArticleDOI
Theory of Feeding Strategies
TL;DR: Throughout, emphasis will be placed on strategic aspects of feeding rather than on what Holling (75) has called "tactics," and possible answers to the first problem may be given to the second problem.
Journal ArticleDOI
The ontogenetic niche and species interactions in size-structured populations
Earl E. Werner,James F. Gilliam +1 more
TL;DR: The body size is one of the most important attributes of an organism from an ecological and evolutionary point of view as mentioned in this paper, and it has a predominant influence on an animal's energetic requirements, its potential for resource exploitation, and its susceptibility to natural enemies.
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The Evolution of Ecological Specialization
TL;DR: The evolution of "niche breadth" was a more popular topic in the evolutionary ecological literature of the 1960s and 1970s than it has been recently (109, 118, 120, 134, 155, 156) as mentioned in this paper.
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Nonsynchronous Spatial Overlap of Lizards in Patchy Habitats
TL;DR: The first observation may be related to the first in the following way: nonsynchronous spatial overlap could dictate relatively great resource overlap for species coinhabiting patchy or edge areas, requiring great differences between the species in prey size in addition to those in climatic habitat.
References
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Journal ArticleDOI
Home Range Ecology of Uta Stansburiana Stejnegeri
Journal ArticleDOI
Some Apects of the Natural History of Iguana iguana on a Tropical Strand
Harold F. Hirth,Harold F. Hirth +1 more
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The Anatomy of the Rainbow Lizard Agama agama L.
Carl Gans,Vernon A. Harris +1 more