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Clutch size and oviposition site of Kentropyx calcarata Spix, 1825 in southern Bahia, Brazil

Egg-laying habits of a species play an important role in population dynamics (Rand, 1967), since some types of sites chosen may offer better protection from predators, and provide optimum environmental conditions to the survival and development of juveniles (Rand, 1967). Likewise, clutch size and egg volume are essential to the study of life history traits because they allow an understanding on how energy is allocated for reproduction (Werneck et al., 2009). Species of the lizard genus Kentropyx (Squamata: Teiidae) are widely distributed in South America and comprise nine species subdivided in three monophyletic groups: calcarata, paulensis and striata (Werneck et al., 2009). The species of the calcarata group are associated with forest ecosystems and occur in the Amazon Basin and the Atlantic Forest of Brazil (Gallagher, Dixon and Schmidly, 1986). Kentropyx calcarata Spix 1825 can be found in open and sunny microhabitats within forests (Avila-Pires, 1995). Eggs can be found in nests buried in the sand (Vitt, 1991) or in rotten trunks (Magnusson and Lima, 1984), but there is no hitherto record of eggs deposited in bromeliads. In our study we examine some aspects of clutch site and size, egg volume and juveniles of K. calcarata. Eggs of K. calcarata were found inside bromeliads of the genus Areococcus Brogn at a Mussununga Forest, a type of wet forest characterized by short trees, located on sandy soil (Thomas, 2003) which was part of a larger Atlantic Forest patch. The eggs were found on fieldwork trips between December 2011 and January 2012. The study site is located at Reserva Particular do Patrimonio Natural Boa Uniao, Acuipe, Ilheus, Bahia, Brazil (S 15°04’35,1’’/ W 39°03’01,5’’), comprising an area of 1.12 km². Bromeliads containing eggs were cut at the base, placed into plastic bags and taken to the laboratory during the following day. Both eggs and hatchlings were weighted with an electronic scale (Shimadzu BL3200H) with 0.01 precision and measured with a caliper of 0.01 cm of precision. We calculated egg volume with the formula for a spheroid, where w is egg width and l is egg length, and compared our results statistically with those presented in literature using a t test for independent observations when variances are different. Two voucher specimens were deposited at “Laboratorio de Vertebrados da Universidade Estadual do Sudoeste