Thermal ecology and activity patterns of the lizard community of the Restinga of Jurubatiba, Macaé, RJ

Hatano, F. H.; Vrcibradic, Davor; Galdino, Conrado A. B.; Cunha-Barros, M.; Rocha, Carlos Frederico Duarte; Sluys, Monique Van

doi:10.1590/s0034-71082001000200011

Cited by 61 publications

(72 citation statements)

References 18 publications

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“…This avoids exposure to high environmental temperatures and is consistent with observations on other lizard species (Cowles and Bogert 1944, Bogert 1949, Castilla et al 1999, Hatano et al 2001. Individuals take shelter or use more shaded microhabitats (as leaf-litter) to avoid overheating (Mosauer 1936), which also makes them harder to detect.…”

Section: Introductionsupporting

confidence: 80%

“…The following results from other studies documented shorter activity times for lizards: Barra de Maricá (Rio de Janeiro, Brazil) from 7:00 am to 4:00 pm ; Jurubatiba (Rio de Janeiro, Brazil), from 08:00 to 5:00 pm (Hatano et al 2001). The differences in the length of the activity cycles of lizards from Barra de Maricá, Jurubatiba and Grussaí might reflect the local thermal environments, including the effects of seasonality.…”

Section: Introductionmentioning

confidence: 62%

“…Individuals control their time of activity and body temperatures by increasing and decreasing their movement rates in response to thermal conditions and by performing behavioral adjustments (Hatano et al 2001, Rocha et al 2009, Maia-Carneiro et al 2012, 2017. Such adjustments include alternating between sunny and shaded microhabitats, or between sites with higher and lower environmental temperatures (Hertz 1992, Castilla et al 1999, Maia-Carneiro and Rocha 2013.…”

Section: Introductionmentioning

confidence: 99%

“…Individuals take shelter or use more shaded microhabitats (as leaf-litter) to avoid overheating (Mosauer 1936), which also makes them harder to detect. The extended daily activity cycle of M. macrorhyncha in Grussaí (see Hatano et al 2001 for comparisons) probably reflects the thermal properties of that environment during the summer, which is able to provide enough heat for lizard activity later during the day. This hypothesis may apply since the mean T b in the population of Grussaí was comparatively higher than in other localities: Barra de Maricá (32.1 °C, Vrcibradic 1996), Jurubatiba (32.7 °C, Hatano et al 2001), and in pooled data from Grussaí and Praia das Neves (32.0 °C, Vrcibradic and Rocha 2002).…”

Section: Introductionmentioning

confidence: 99%

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Body orientation for thermoregulation and daily activity cycle of Mabuya macrorhyncha (Squamata: Scincidae)

et al. 2018

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ABSTRACT. We investigated the daily activity and thermoregulatory body orientation of Mabuya macrorhyncha (Hoge, 1947), a lizard species that occurs in the Brazilian Atlantic Forest. We conducted this investigation in a sandy coastal dune remnant ("restinga" ecosystem) in Grussaí, state of Rio de Janeiro, Brazil, during the summer. The daily activity cycle of the lizards started around 6:00 am and ended before 7:00 pm. This is longer than observed in other populations of M. macrorhyncha (approximately 7:00 am to 5:00 pm). The activity cycle of the lizards was bimodal, with the first peak between 6:00 and 11:00 am and the second from 2:00 to 7:00 pm. This contrasts with observations on other populations of this species, which revealed an unimodal pattern. The mean body temperature of M. macrorhyncha in Grussaí was 34.2 ± 1.5 °C, which was comparatively higher than observed in other populations of the species. The differences in the daily activity and of body temperature of these lizards between our study and previous studies on this species may reflect environmental thermal conditions. The mean air and mean substrate temperatures when individuals were active were 27.8 and 30.5 °C respectively.Lizard orientation was significantly correlated with the direction of the solar incidence, suggesting that solar radiation, and particularly behavioral adjustments that maximize exposure to the sun, are important for the thermoregulation of M. macrorhyncha. Circular structures at the site, such as bromeliads, offer microhabitats with different orientations to the sunlight, favoring lizard thermoregulatory behaviors. KEY WORDS. Activity period, body temperature regulation, microhabitat, thermoregulatory behavior.

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Section: Introductionsupporting

confidence: 80%

Section: Introductionmentioning

confidence: 62%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Body orientation for thermoregulation and daily activity cycle of Mabuya macrorhyncha (Squamata: Scincidae)

et al. 2018

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“…Indeed, lizard activity is generally strongly related to environmental temperatures (e.g. HATANO et al, 2001;NICHOLSON et al, 2005).…”

mentioning

confidence: 99%

Daily activity and microhabitat use of sympatric lizards from Serra do Cipó, southeastern Brazil

Filogonio

Lama

Machado

et al. 2010

Iheringia, Sér. Zool.

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ABSTRACT. We studied the influence of seasonality on the daily activity pattern and microhabitat use of three sympatric lizard species, Cnemidophorus ocellifer Spix, 1825 (Teiidae), Tropidurus montanus Rodrigues, 1987 and Eurolophosaurus nanuzae (Rodrigues, 1981) (Tropiduridae), in an area of campos rupestres (rocky fields) habitat in state of Minas Gerais, Brazil. Cnemidophorus ocellifer exhibited low density and activity concentrated within the hottest hours of the day, and was observed mainly on shaded rocks. Tropidurus montanus and E. nanuzae had similar activity patterns that did not vary between seasons. Activity of T. montanus was related to environmental temperatures. However, we did not find such relationships for E. nanuzae during the dry season. Both T. montanus and E. nanuzae were sighted mainly on exposed rocks. Extension of activity varied between seasons, shorter for C. ocellifer and longer for T. montanus and E. nanuzae during the rainy season. KEYWORDS. Activity patterns, seasonal variation, Cnemidophorus ocellifer, Tropidurus montanus, Eurolophosaurus nanuzae.RESUMO. Atividade diária e uso de microhabitats de lagartos simpátricos da Serra do Cipó, sudeste do Brasil. Nós estudamos a influência da sazonalidade no padrão de atividade e uso de microhabitat ao longo do dia em três espécies simpátricas de lagartos Cnemidophorus ocellifer Spix, 1825 (Teiidae), Tropidurus montanus Rodrigues, 1987 e Eurolophosaurus nanuzae (Rodrigues, 1981) (Tropiduridae) em uma área de campos rupestres no estado de Minas Gerais, Brasil. Cnemidophorus ocellifer apresentou uma baixa densidade na área e sua atividade se concentrou nas horas mais quentes do dia, sendo visto principalmente em rochas sombreadas.Tropidurus montanus e E. nanuzae demonstraram padrão de atividade similar que não variou entre as estações. No entanto, a atividade em T. montanus esteve ligada às temperaturas do ambiente, enquanto esta condição não afetou o padrão de E. nanuzae durante a estação seca. Tanto T. montanus quanto E. nanuzae foram avistados principalmente em rochas expostas. A extensão da atividade variou entre as estações, sendo menor para C. ocellifer durante a estação chuvosa e maior para T. montanus e E. nanuzae durante o mesmo período.

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Population density and conservation status of the teiid lizard Cnemidophorus littoralis, an endangered species endemic to the sandy coastal plains (restinga habitats) of Rio de Janeiro state, Brazil

2016

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Thermal ecology and activity patterns of the lizard community of the Restinga of Jurubatiba, Macaé, RJ

Cited by 61 publications

References 18 publications

Body orientation for thermoregulation and daily activity cycle of Mabuya macrorhyncha (Squamata: Scincidae)

Body orientation for thermoregulation and daily activity cycle of Mabuya macrorhyncha (Squamata: Scincidae)

Daily activity and microhabitat use of sympatric lizards from Serra do Cipó, southeastern Brazil

Population density and conservation status of the teiid lizard Cnemidophorus littoralis, an endangered species endemic to the sandy coastal plains (restinga habitats) of Rio de Janeiro state, Brazil

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