%0 Journal Article
%T Intraspecific variation in body size and shape in an Andean highland anole species, Anolis ventrimaculatus (Squamata: Dactyloidae)
%A Martha L. Calder車n-Espinosa
%A Angela M. Ortega-Le車n
%A Joan G. Zamora-Abrego
%J Revista de Biolog赤a Tropical
%D 2013
%I Universidad de Costa Rica
%X Variation in body characteristics related to lizard locomotion has been poorly studied at the intraspecific level in Anolis species. Local adaptation due to habitat heterogeneity has been reported in some island species. However, studies of mainland species are particularly scarce and suggest different patterns: high variability among highland lizards and poorly differentiated populations in one Amazonian species. We characterized inter population variation of body size and shape in the highland Andean Anolis ventrimaculatus, an endemic species from Western Colombia. A total of 15 morphometric variables were measured in specimens from the reptile collection of the Instituto de Ciencias Naturales, Universidad Nacional, Colombia. The study included individuals from seven different highland localities. We found size and shape sexual dimorphism, both of which varied among localities. Patterns of variation in body proportions among populations were different in both males and females, suggesting that either sexual or natural selective factors are different in each locality and between sexes. Since this species exhibits a fragmented distribution in highlands, genetic divergence may also be a causal factor of the observed variation. Ecological, behavioral, additional morphological as well as phylogenetic data, may help to understand the evolutionary processes behind the geographic patterns found in this species. La diversificaci車n fenot赤pica al interior de una especie en caracter赤sticas de dimensiones corporales relacionadas con la locomoci車n de los lagartos, se ha estudiado poco en especies de Anolis. Los datos de algunas especies de isla revelan patrones distintos de variaci車n geogr芍fica y sugieren que la adaptaci車n local, debida a la heterogeneidad del h芍bitat, ocurre a este nivel. Los estudios de especies de continente son particularmente escasos y sugieren patrones distintos: un lagarto altoandino altamente variable y poblaciones poco diferenciadas en una especie amaz車nica. Caracterizamos la variaci車n inter poblacional en el tama o y forma del cuerpo del lagarto altoandino Anolis ventrimaculatus, especie end谷mica del Oeste de Colombia. Encontramos variaci車n geogr芍fica en el dimorfismo sexual en tama o y forma. El patr車n de variaci車n en las proporciones corporales entre poblaciones fue distinto en machos y en hembras, sugiriendo que las presiones de selecci車n sexual o natural son diferentes en cada localidad. Dado que la especie exhibe una distribuci車n fragmentada en alta monta a, la divergencia gen谷tica entre poblaciones puede ser otro factor causal de la
%K Anolis ventrimaculatus
%K variaci車n intraespec赤fica
%K continente
%K Sur Am谷rica
%K Anolis ventrimaculatus
%K intraspecific variation
%K Mainland
%K South America
%U http://www.scielo.sa.cr/scielo.php?script=sci_arttext&pid=S0034-77442013000100020