Resumo
The activity rhythm of the lizard Liolaemus occipitalis Boulenger, 1885 was studied during the summer of 93 at the sand dunes of the Quintão beach, from 06:00-18:00h. During sunny days this lizard exhibited two peaks of activity (1000-1200h and 1400-1600h), and in the cloudy days it exhibited one peak of activity (1200-1400h). The number of burrows was observed and the different soil temperatures was compared with the rhythm of activity exhibited by the lizards. Rhythm of activity is determined mainly by soil surface temperatures.
Tropiduridae; Liolaemus occipitalis; activity; neotropical lizards; sand dunes
Tropiduridae; Liolaemus occipitalis; activity; neotropical lizards; sand dunes
Ritmo de atividade de Liolaemus Occipitalis boulenger (Sauria, Tropiduridae) na praia de Quintão, Rio Grande do Sul, Brasil
Rhythm of activity of Liolaemus Occipitalis (Sauria, Tropiduridae) at the Quintão beach, Rio Grande do Sul, Brazil
Laura Verrastro; Clóvis Souza Bujes
Departamento de Zoologia, Instituto de Biociências, Universidade Federal do Rio Grande do Sul. 90046-900 Porto Alegre, Rio Grande do Sul, Brasil. E-mail: lauraver@vortex.ufrgs.br ou csbujes@conex.com.br
ABSTRACT
The activity rhythm of the lizard Liolaemus occipitalis Boulenger, 1885 was studied during the summer of 93 at the sand dunes of the Quintão beach, from 06:00-18:00h. During sunny days this lizard exhibited two peaks of activity (1000-1200h and 1400-1600h), and in the cloudy days it exhibited one peak of activity (1200-1400h). The number of burrows was observed and the different soil temperatures was compared with the rhythm of activity exhibited by the lizards. Rhythm of activity is determined mainly by soil surface temperatures.
Key words: Tropiduridae, Liolaemus occipitalis, activity, neotropical lizards, sand dunes.
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AGRADECIMENTOS. Agradecemos ao Departamento de Zoologia da Universidade Federal do Rio Grande do Sul e a FAPERGS, pelo apoio dado através de Bolsa de Recém-Mestre e Auxílio a Pesquisa, processo nº 93.1131.8.
Recebido em 15.V.1997; aceito em 03.XI.1998.
- BORGERT, CM. 1959. How reptiles regulate their body temperature. Scientific Amer. 200:415-420.
- DELANEY, P.J.V. 1965. Fisiografia e geologia da superfície da planície costeira do Rio Grande do Sul. Publ. Esp. Esc. Geol. UFRGS, Porto Alegre. 6: 1-105.
- DONOSO-BARROS, R. 1966. Reptiles de Chile. Santiago, Univ. Chile, 458p.
- GUIBÉ, J. 1970. Données ecologiques -Cycles d'activité et hivernage, p. 1396-1398. In: P.P. Grasse (Ed). Traité de Zoologie XIV, Anatomic, Systematique, Biologie Paris, Masson et Cie., 1428p.
- HASENACK, H.; W.L. FERRARO & N.A. KAERCHER. 1987. Relatório Final-Mapa Climatológico Porto Alegre, UFRGS-Centro de Ecologia, Laboratório de Climatologia, 18p.
- PETER, J. & R. DONOSO-BARROS. 1970. Catalogue of the Neotropical Squamata. Part.I Lizard and Amphisbaenians. Bull. U.S. Nat. Mus. 297: 1-293.
- PFADENHAUER, J. 1980. Die Vegetation der Küstendünen von Rio Grande do Sul Südbrasilien. Phytocoenologia. 8 (3/4): 321-364.
- PFADENHAUER, J. & F.R. RAMOS. 1979. Um complexo de vegetação entre dunas e pântanos próximo a Tramandaí. Rio Grande do Sul, Brasil. Iheringia, Sér. Bot., 25: 17-26.
- PIANKA, E.R. 1969. Sympatry of Desert Lizard (Ctenotus) in Western Austrália. Ecology. 50 (6): 1013-1030.
- PORTO, R.P. & A.M. CORTAZZI. 1982. Carta de solos do Rio Grande do Sul. Mapas temáticos do Rio Grande do Sul. Porto Alegre, Secretaria de Agricultura, 21p.
- ROCHA, CF.D. 1988. Ritmo de atividade e microclimatologia do habitat de Liolaemus lutzae (Sauria-Iguanidae). An. Sem. Reg. Ecol., Rio de Janeiro, 6: 269-281.
- SIMONETTI, J. 1984. Refuge utilization by Liolaemus nigromaculatus a compromise between predation risks and thermoregulatory requeirment. Stud. Neotrop. Fauna Environ. 19 (1): 47-51.
- VERRASTRO, L. & L. KRAUSE. 1994. Analysis of Growth in a Population of Liolaemus occipitalis Boul. 1885, from the Coastal Sand-dunes of Tramandai, RS, Brazil (Reptilia, Tropiduridae). Studies Neotrop. Fauna Environ. 29 (2): 99-111.
- WAECHTER, J.L. 1985. Aspectos ecológicos da vegetação de restinga no Rio Grande do Sul, Brasil. Comun. Mus. Ci. PUCRS, Sér. Bot., Porto Alegre, 33: 49-68.
- ______. 1990. Comunidades vegetais das Restingas do Rio Grande do Sul. Aciesp, São Paulo, 3: 228-248.
Datas de Publicação
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Publicação nesta coleção
06 Jul 2009 -
Data do Fascículo
Dez 1998
Histórico
-
Aceito
03 Nov 1998 -
Recebido
15 Maio 1997
