2004
DOI: 10.1590/s0073-47212004000100007
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Abstract: ABSTRACT. The sexual dimorphism in size, morphology and color of the lizard Liolaemus occipitalis Boulenger, 1885 was studied. Thirty-two adult males and twenty-eight adult females were sampled from a population in the Jardim do Éden beach, near Tramandaí, Rio Grande do Sul, Brazil. Size related sexual dimorphism occurred in all compared body dimensions. The largest female was 59.6 mm in snout-vent length, and the largest male was 69.3 mm. Males and females also presented differences in ventral and dorsal colo… Show more

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Cited by 20 publications
(13 citation statements)
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“…On the other hand, ROCHA (1991) asserts that the pattern of coloration of the L. lutzae, rather cryptic on the sands of the shore, added to the fact that open areas in general offer more opportunities to predation, suggests that the pressure of predators in the area must be high, and predators in general use vision to locate lizards. Given that L. occipitalis also presents cryptic coloration (VERRASTRO, 2004) as a response to the environment and that it is active throughout the day in spite of suffering the pressure of predators such as the bird Guira guira Gmelin, 1788 and the snake Lystrophis dorbignyi (Duméril, Bibron & Duméril, 1854) (C. S. Bujes pers. obs.…”
Section: Resultsmentioning
confidence: 99%
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“…On the other hand, ROCHA (1991) asserts that the pattern of coloration of the L. lutzae, rather cryptic on the sands of the shore, added to the fact that open areas in general offer more opportunities to predation, suggests that the pressure of predators in the area must be high, and predators in general use vision to locate lizards. Given that L. occipitalis also presents cryptic coloration (VERRASTRO, 2004) as a response to the environment and that it is active throughout the day in spite of suffering the pressure of predators such as the bird Guira guira Gmelin, 1788 and the snake Lystrophis dorbignyi (Duméril, Bibron & Duméril, 1854) (C. S. Bujes pers. obs.…”
Section: Resultsmentioning
confidence: 99%
“…Moreover, this behavior helps them both to evade predators and to capture preys found under the vegetation. VERRASTRO & BUJES (1998), studying the same species during the months of January and February (when temperatures are the highest in the area of dunes), observed that the main activity for that period of the year was found under vegetation, Liolaemus occipitalis presents a omnivore diet (VERRASTRO, 2004), which according to ROCHA (1992), would represent an alternative to compensate the impossibility of the lizards to graze for a long period of time, when temperatures are critical. Substrate temperatures limit the activities of the lizards during the warmest hours of the day, when they are confined to shadows under the grassy vegetation.…”
Section: Resultsmentioning
confidence: 99%
“…The biometric measurements of snout-vent length (SVL) and jaw width (JW) were taken in the laboratory using a caliper with 0.1 mm precision. Sex was identified by the presence or absence of cloacal pores and color according to Verrastro (2004). Males were considered adults if the SVL was at least 50.0 mm, and females were considered adults if the SVL was at least 45.0 mm (Verrastro and Krause, 1994).…”
Section: Methodsmentioning
confidence: 99%
“…However, Espinoza et al (2004) stated that different herbivory levels in the genus Liolaemus have appeared during evolution as adaptations to cold environments. Therefore, the Liolaemus species are part of a group of small omnivorous and/or herbivorous tropidurid lizards that occur in the southern extreme of South America (Vitt and Caldwell, 2009 (Peters et al, 1986;Lema, 1994;Verrastro, 2004). These lizards are also found on the east coast of Uruguay (Verrastro et al, 2006).…”
Section: Introductionmentioning
confidence: 99%
“…Varias especies de Liolaemus Wiegmann presentan dimorfi smo sexual, pero en pocas se han especifi cado los caracteres dimórfi cos (Villavicencio et al 2003, Verrastro 2004, Vidal et al 2005, Cánovas et al 2006, Laspiur et al 2006, Valdecantos & Lobo 2007. Una de las estructuras que se han usado para diferenciar inequívocamente a hembras de machos son los poros precloacales (Donoso-Barros 1966, Verrastro 2004, Canovas et al 2006, Laspiur & Acosta 2007 pues en general están presentes sólo en machos de Liolaemus (Donoso-Barros 1966, Navarro & Núñez 1992, Pincheira-Donoso et al 2008.…”
unclassified