Full length paper

Patrones de actividad y abundancias relativas en un lagarto del noroeste argentino, Liolaemus quilmes (Iguania: Liolaemidae)

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Cuadernos de Herpetología 17 (1-2): 65-71, 2003 mhalloy@unt.edu.ar

Abstract

Activity patterns and relative abundances were investigated in the neotropical lizard, Liolaemus quilmes, Liolaemidae, at a site in Northwestern Argentina, to estimate population variations between years and to determine whether differences exist in the number of males and females during the reproductive and post-reproductive seasons. For this, a site 50x50m was selected and marked within the distribution of this species. Periodic censuses were made using visual encounters, during different periods of the spring and summer of three consecutive years. Males came out of hibernation in September followed by females one to two months later. Later both were found in similar quantities although, towards the fall, females became more abundant than males in two of the three years of the study. There were no significant differences in the number of males and females found during the three years of the study, indicating a stable population. Significantly more females were found during the post-reproductive than during the reproductive season and there were significantly more males than females during the reproductive season. These differences reflect different needs in males and females which in turn affects their respective reproductive strategies.

Key words:

Liolaemus quilmes; Liolaemidae; patrones de actividad; abundancias relativas; noroeste Argentino

Received: Mar. 04, 2003 ▪ Accepted: Sep. 06, 2003

Associate Editor: V. Abdala
Halloy, M. & Robles, C. 2003. Patrones de actividad y abundancias relativas en un lagarto del noroeste argentino, Liolaemus quilmes (Iguania: Liolaemidae). Cuadernos de Herpetología 17: 65-71.