The British Herpetological Society

The Herpetological Journal is the Society's prestigious quarterly scientific journal. Articles are listed in Biological Abstracts, Current Awareness in Biological Sciences,Current Contents, Science Citation Index, and Zoological Record.

 ISSN 0268-0130

2020 Impact Factor for the Herpetological Journal is 0.862

pdf 07. Reproductive biology of the southernmost Kentropyx lizard from the Wet Chaco of Corrientes, Argentina


Open Access

pp. 119-130

Authors: Martín A. Ortiz, Jorgelina M. Boretto & Nora R. Ibargüengoytía

Abstract: Studies on reproductive modes, size at maturity, clutch size and clutch frequency have contributed greatly to our understanding of life history variation among lizard populations, and thereby, to implement conservation strategies. Herein, we studied the reproductive biology of the vulnerable tegu lizard Kentropyx viridistriga from Corrientes, northeastern Argentina (Wet Chaco). Kentropyx viridistriga are active from early summer to late autumn, with temperature and photoperiod influencing the timing of reproduction and the brumation period. Females showed an annual reproductive cycle, and males exhibited a continuous reproductive cycle during the activity season. Females laid at least two clutches of on average three eggs per reproductive season. Neonates occured in spring, and reached sexual maturity in the first year of life. Females reached sexual maturity at a larger snout-vent length (64.1 mm) than males (54.8 mm). Sexual dimorphism is evident, with males showing greater head size and longer tails than females, while females exhibit larger interlimb length than males. This study reveals that the reproductive strategy of K. viridistriga is adjusted to the environmental conditions of the southernmost distribution for the genus.

Key words: life history, Kentropyx viridistriga, reproductive cycle, Squamata, Teiidae

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Please note that as from Volume 31 Number 1 (January 2021) on, the Herpetological Journal will be available as an online publication only - the last print edition will be Volume 30 Number 4.   

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