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Reproductive Ecology of Ameiva ameiva (Sauria, Teiidae) in the Cerrado of Central Brazil

Guarino R. Colli
Copeia
Vol. 1991, No. 4 (Dec. 13, 1991), pp. 1002-1012
DOI: 10.2307/1446095
Stable URL: http://www.jstor.org/stable/1446095
Page Count: 11
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Reproductive Ecology of Ameiva ameiva (Sauria, Teiidae) in the Cerrado of Central Brazil
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Abstract

The reproductive ecology of the teiid lizard Ameiva ameiva was investigated in Cerrado areas of Distrito Federal, Brazil. Reproductive activity was strongly correlated with seasonal patterns of rainfall, being curtailed or reduced during the dry season. Comparisons with other populations indicated that life-history traits of A. ameiva vary along its broad geographical range. Populations in Cerrado produce larger clutches of smaller eggs than in Caatinga of northeast Brazil. Reproduction is continuous in areas where rainfall is abundant all year (Amazonian rain forest) or highly unpredictable (Caatinga), and cyclical in areas of highly seasonal climate (Cerrado and Amazon Savanna). It is concluded that, at lower taxonomic levels, adaptation to the local environment can be a major determinant of life-history patterns of tropical reptiles.

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