Resumo em Espanhol:
Las variaciones en el uso de percha nocturna son en parte un reflejo de la partición de recursos que permite la coexistencia al disminuir la competencia intraespecifica entre individuos de diferentes sexos y tamaños. En este trabajo se evaluó el uso de percha nocturna en los machos, las hembras y los juveniles de Basiliscus galeritus en Isla Palma - Pacífico Colombiano en abril de 2011. Los individuos fueron capturados manualmente y se tomó la información de la altura de la percha, posición en la que estaban perchados, longitud rostro cloacal y cobertura vegetal. Se registraron 39 individuos, encontrando que el tipo de percha utilizado con mayor frecuencia fueron las ramas (46,15%) seguido por las hojas (38,46%) y ocasionalmente fueron observados sobre lianas, suelo y tallos. Se evaluo el grado de asociación entre los sexos y cada una de las variables estudiadas con la altura de percha utilizando tablas de contingencia. No se detectó asociación alguna aunque el uso de percha estuvo relacionado con el tamaño corporal del individuo, independiente de su sexo. (rs = ‑0,08, p = 0,7).
Resumo em Inglês:
Variations in night perch use reflects the partitioning of resources, which allows coexistence by reducing intraspecific competition between individuals of different sexes and sizes. In this study we evaluated nocturnal perch use for males, females and juveniles of Basiliscus galeritus in Isla Palma - Pacífico Colombiano. In April of 2011, individuals were captured manually and we recorded the perch height, position in which they were perched, snout-vent length and vegetation cover. Thirty-nine individuals were recorded. We found that the most frequently used perch types were branches (46.15%), followed by leaves (38.46%), and occasionally individuals were observed on vines, soil and stems. The existence of an association between gender and each of the variables studied was evaluated using contingency tables. This was not a statistically significant association. However, we determined that the use of the night perch is more related to body size of an individual than sex or gender, as a positive correlation was found between the size and height of the perch (rs = ‑0.08, p = 0.7).
