Título
Growth effort of Sceloporus scalaris (Sauria: Phrynosomatidae) at La Michilía Biosphere Reserve, Mexico
Autor
Alfredo Ortega Rubio
GONZALO HALFFTER SALAS
Aradit Castellanos Vera
Federico Salinas Zavala
Nivel de Acceso
Acceso Abierto
Referencia de publicación
URL/URL: https://revistas.ucr.ac.cr/index.php/rbt/article/view/19423
ISSN/ISSN: 2215-2075
Materias
Resumen o descripción
"Using Mark-Recapture methods the growth effort of Sceloporus scalaris was studied at La Michilía Biosphere Reserve, Durango, Mexico. A total of 146 recaptures on 68 individuals were obtained over four years on a 50 000 m2 transect. To calculate the growth rate of Sceloporus scalaris individuals, we analyzed the data from two sources. The first using the recapture records of the same individuals over different seasons and the second using the records of cohorts during different periods. The growth effort of S. scalaris drastically diminishes as the organism grows. The growth rate of males and females is about equal for individuals from both clutches. In adults, where it is possible to compare among seasons, we measure quicker growth during the spring. The growth paltern of S. scalaris at La MichiIía follows the predictions proposed by the Bertalanffy model. Maximum growth rates are in the younger age classes and these rates decrease as size increases. The growing period of S. scalaris is correlated with the seasons at La Michilía Biosphere Reserve. Newborn S. scalaris appear when the availability of nourishment is still the most propitious for growth at faster rates. Such adaptations to the environment determine many key population attributes of this species in this zone. The sexual maturiry age of S. sealaris is very early at La Michilía, only 4.5 to 6 months. Undoubtedly, the growth partern of S. scalaris at La MichiIía Biosphere Reserve can help explain the structure and dynamics of this population. "
Editor
Universidad de Costa Rica
Fecha de publicación
1998
Tipo de publicación
Artículo
Versión de la publicación
Versión publicada
Recurso de información
Formato
application/pdf
Fuente
REVISTA DE BIOLOGIA TROPICAL
Idioma
Inglés
Repositorio Orígen
Repositorio Institucional CIBNOR
Descargas
208