Size Patterns in West Indian Anolis Lizards: I. Size and Species Diversity

摘要: Schoener, Thomas W. (Biological Laboratories, Harvard Univ., Cambridge, Mass. 02138) 1969. Size pattern in West Indian Anolis lizards: I. and species diversity. Syst. Zool., 18:386-401.-Anolis lizard have solitary populations on certain islands. These a narrow range mean body size, very different for the two sexes, though they inhabit islands varying greatly area environmental Smallsized exceptions to this uniformity are northerly. Sizes of males forms collectively significantly larger than sizes richest With increasing diversity from island island, size distributions irregularly decrease median but increase skewness. On three islands, smaller more often restricted geographic range. From simple assumptions about competition resources, relation is derived which holds that snout-vent length or some power thereof given equal multiple reciprocal number closely related its plus constant. This shown better describe data alternatives. The ratio principal trophic structure (the head) entire sometimes not always predictable congeneric island. [Anolis; Indies; size; diversity; convergence; evolution]. Among terrestrial vertebrates, lizards genus notable numerical abundance, diversity, observability. features stimulated abundant research ecology evolution genus, mostly yet unpublished (see Williams, press, review). Recently, E. Williams I were struck by opportunity offered making sort inductive generalizations interspecific differences structures total bulk been made birds (Lack, 1947; Hutchinson, 1959; Klopfer MacArthur, 1961; 1965; Grant, 1968 included references). Our aims twopronged. First, resulting set patterns describing should extend delimit domain tendencies noted birds. But importantly, extensive lode habitat distributional information narrowly defined group permit exact statement t-he spatial overlap differences. paper considers possible effects major factors-number sympatric congeners, latitude, size-and several minor ones absolute relative females. Other results presented elsewhere (Schoener,