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dc.creatorVIDAL,MARCELA
dc.creatorORTIZ,JUAN CARLOS
dc.creatorLABRA,ANTONIETA
dc.date2002-06-01
dc.date.accessioned2020-02-17T15:29:25Z
dc.date.available2020-02-17T15:29:25Z
dc.identifierhttps://scielo.conicyt.cl/scielo.php?script=sci_arttext&pid=S0716-078X2002000200002
dc.identifier.urihttps://revistaschilenas.uchile.cl/handle/2250/128498
dc.descriptionMicrolophus is a lizard genus of South-America which has many species with sexual size dimorphism. An ecological study was performed on M. atacamensis, a species inhabiting the intertidal zone of the coast of northern Chile. The following questions were addressed: (1) does M. atacamensis exhibit sexual dimorphism? (2) do individuals of different age and sex segregate spatially? (3) do individuals of different age and sex use different type of microhabitat? and (4) do individuals of different sexes exhibit differences in thermoregulatory characteristics? The study was conducted in different localities from northern Chile, which include two types of rocky systems used by this species, a high and a low type. At the moment of lizard capture, type of microhabitat, height of perch, body, air and substrate temperatures, were recorded. Individuals were then measured and weighted, and separated by age class and sex. Results indicate that this species exhibits sexual dimorphism, males being larger. There were no intersexual differences in microhabitat used and height of perch in the high type system, although adults and subadults were spatially segregated from juveniles. In the low type system adult females shared microhabitat with juveniles, a probable consequence of behaviors related to the burying of eggs. There were no differences between sexes in thermal characteristics, and body temperature of lizards showed independence from external thermal conditions
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dc.languageen
dc.publisherSociedad de Biología de Chile
dc.relation10.4067/S0716-078X2002000200002
dc.rightsinfo:eu-repo/semantics/openAccess
dc.sourceRevista chilena de historia natural v.75 n.2 2002
dc.subjectTropiduridae
dc.subjectMicrolophus atacamensis
dc.subjectsexual dimorphism
dc.subjectthermoregulation
dc.subjectspatial segregation
dc.subjectChile
dc.titleSexual and age differences in ecological variables of the lizard Microlophus atacamensis (Tropiduridae) from northern Chile


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