By Jonathan Roughgarden

The Anolis lizards of the Caribbean are superb for the examine of evolutionary ecology. delivering attention-grabbing insights into the greater than a hundred and fifty species dispersed through the Caribbean islands, Jonathan Roughgarden info the diversities among species in quite a lot of behavioral and actual features, together with foraging behaviors, physique measurement, and habitat use, caused by evolutionary divergences concurrent with the plate-tectonic origins of the sector. This booklet may be of curiosity to scholars and researchers--ecology and theoretical, tropical, and inhabitants biology.

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Additional resources for Anolis Lizards of the Caribbean: Ecology, Evolution, and Plate Tectonics (Oxford Series in Ecology and Evolution)

Example text

The reciprocal of the population density provides only the projection of the home range area on the ground. In typical habitat an anole may travel a long distance vertically while moving only slightly in a horizontal dimension. Indeed, the most comparable species from Puerto Rico, the ubiquitous A. 13 A. schwartzi, St. Eustatius, stomach contents of 80 lizards, classified to Order. Taxon Annelida Gastropoda Acarina Araneida Chilopoda Diplopoda Isopoda Scorpionida Coleoptera, adults Coleoptera, larvae Collembola Diptera, adults Diptera, larvae Hemiptera Homoptera Hymenoptera, formicidae Hymenoptera, other Isoptera Lepidoptera, adults Lepidoptera, larvae Orthoptera Thysanoptera Other insects, adults Other insects, larvae Mean No.

Eustatius Procedure N/100 m2(SE) Dates Species Jan. 16-18 1983 A. schwartzi A. bimaculatus 3-day independ. 3-day independ. 6) June 23-24, 1983 A. schwartzi A. bimaculatus 2-day independ. 2-day independ. 6) Mar. 28-30, 1984 A. schwartzi A. bimaculatus 3-day independ. 3-day independ. 2) July 26-28, 1984 A. schwartzi A. 4) from the wild more or less at random during February 1982 and were introduced to experimental exclosures for studies of interspecific competition [298], as discussed further in the next chapter.

The ability of anoles to detect motion such as a prey alighting some distance away is highly refined [115,116]. When anoles miss, it's because the insect flies away before they arrive. Some insects seem naturally edgy, and tend to fly away regardless of circumstances, while others seem to fly off only when somehow alerted to danger. In either case, an anole may have only a short time to run from its perch to the insect's position before the insect escapes. Flightiness To include the possibility of prey escape into the foraging theory, it seems reason- able to suppose that a prey has an index of flightiness, say f\ for a prey of type 1, that is related to the time it will remain stationary and vulnerable to predation, If f1 is the probability per second that the insect flies away from the spot where it is located, then the probability of its remaining where it alighted for t or more seconds is distributed exponentially with parameter f\.

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