Seasonality in Diet, Perch Use, and Reproduction of the Gecko Gonatodes humeralis from Eastern Brazilian Amazon

Miranda, Jivanildo Pinheiro; Andrade, Gilda Vasconcellos de

doi:10.1670/0022-1511(2003)037[0433:sidpua]2.0.co;2

Cited by 25 publications

(16 citation statements)

References 21 publications

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“…Males in some species of lizards consume a carotenoid-enhanced diet which is associated to their coloration and reproductive success (Kodric-Brown, 1989). Our results agree with those of Blanco et al (2009) for H. andicola, Kun et al (2010) for H. darwini, Miranda & Andrade (2003) and Hibbitts et al (2005) for other species of geckos outside the genus, which studies also found trophic differences between the sexes. In contrast, H. underwoodi showed no sex-related differences in diet (V. Blanco Fager, unpubl.…”

Section: Discussionsupporting

confidence: 91%

Effects of season, sex and age on the diet of Homonota fasciata (Squamata, Phyllodactylidae) from Monte region of Argentina

Cocilio

Blanco

Acosta

2016

Iheringia, Sér. Zool.

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ABSTRACT. This study aimed to investigate the diet of the gecko Homonota fasciata (Duméril & Bibron, 1836) in a population from Monte of San Juan Province, Argentina, and to analyze possible temporal, sexual, and ontogenetic variations in feeding behavior. We determined the total volume, number, and occurrence frequency of each prey item and calculated the relative importance indexes. We also assessed trophic diversity and trophic equity. Homonota fasciata had a generalist and diverse diet based on arthropods, including insects and arachnids. Individuals adopted a passive 'sit and wait' foraging strategy. There were seasonal-, sex-, and age-related variations in the trophic spectra. The results of this study provide a valuable contribution to our understanding of the biology of this species, with implications for the establishment of management guidelines both for the species and its habitat.KEYWORDS. Foraging ecology, gecko, trophic niche, trophic overlap. RESUMEN. Efectos de la estacionalidad, el sexo y el grupo etario sobre la dieta de Homonota fasciata (Squamata, Phyllodactylidae) en una región del Monte de Argentina. El objetivo de este trabajo fue conocer y describir la dieta de Homonota fasciata (Duméril & Bibron, 1836) en una población del Monte de la provincia de San Juan Argentina, analizando posibles variaciones temporales, sexuales y ontogenéticas en la alimentación. Para examinar la dieta, se determinó volumen, numerosidad y frecuencia de ocurrencia para cada ítem-presa, y se calculó el Índice de Importancia Relativa (IRI). Se evaluaron diversidad y equidad trófi ca, además de variaciones estacionales, sexuales y etarias del espectro trófi co. La dieta de H. fasciata es generalista, diversa, basada en artrópodos, incluyendo insectos y arácnidos. La estrategia de forrajeo exhibida fue pasiva ("sit and wait"). Se encontraron variaciones estacionales, sexuales y ontogénicas en la alimentación. Este estudio permite una valiosa contribución al conocimiento de la biología de esta especie, útil a la hora de fi jar pautas de manejo para la misma, como así también para los ambientes que habita.PALABRAS-CLAVE. Ecología trófi ca, gecko, nicho trófi co, solapamiento trófi co.

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Section: Discussionsupporting

confidence: 91%

Effects of season, sex and age on the diet of Homonota fasciata (Squamata, Phyllodactylidae) from Monte region of Argentina

Cocilio

Blanco

Acosta

2016

Iheringia, Sér. Zool.

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“…In such cases, the highest level of intraspecific competition in lizards (if present) is expected to happen during dry season (due to resource limitation). However, the sexual difference in perch height observed in G. humeralis occurs only in the rainy season (MIRANDA & ANDRADE 2003), strengthening the hypothesis that perch height differences observed for G. humeralis are best explained by pressures linked to reproduction rather than intraspecific competition. Additionally, because the higher perch used by males during the rainy (and reproductive) season affects thermoregulation (if a lizard chooses a thermally improper microhabitat, then it will face reduced physiological performance, which would reduce its overall fitness) and also decreases the opportunities to reach retreats on the leaf litter, males of G. humeralis would be exposed to the costs related to that perch choice.…”

Section: Discussionmentioning

confidence: 53%

Influence of structural habitat use on the thermal ecology of Gonatodes humeralis (Squamata: Gekkonidae) from a transitional forest in Maranhão, Brazil

Miranda¹,

Ricci-Lobão²,

Rocha³

2010

Zoologia (Curitiba, Impr.)

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We studied the structural habitat use and the thermal ecology of Gonatodes humeralis (Guichenot, 1855) in São Luís, Maranhão, Brazil, to examine intersexual differences in the use of perch features and to simultaneously analyze reciprocal differences on thermal ecology between the sexes. Gonatodes humeralis body temperature was strongly correlated with environmental temperatures (air and substrate), but air temperature had an additional effect on the males' body temperatures after removing the effect of the substrate temperature. Males and females differed significantly in perch height use above ground (males perched higher) but the sexes did not differ in the trunk perimeter used. Gonatodes humeralis tended to use the larger tree trunks available in its environment and selected trunks with deeper leaf litter at the base. It is hypothesized that choosing tree trunks with deeper leaf litter is a defensive behavior against predation

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“…The sampling sites at Pandi and Carmen Apicalá encompassed several houses, and geckos were also found on their walls. Reproductive periods are not known for our sampling sites but they may start with the onset of rainy seasons (March-April and September-October), as in the closely related G. humeralis (Miranda and Andrade 2003). Natural predators, including snakes, domestic cats, large saurophagous lizards, and some predatory birds are present in all three study sites (Aguilar and Martinez-Cotrina, unpublished observations).…”

Section: Locations and Recording Methodsmentioning

confidence: 99%

Sex differences in antipredator tail-waving displays of the diurnal yellow-headed gecko Gonatodes albogularis from tropical forests of Colombia

Alonso

Cotrina

Pardo

et al. 2009

J Ethol

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Many vertebrate species show display behaviors when predators are in their vicinity. Some of these displays may inform the predator of the improbability of capturing the prey (i.e., pursuit-deterrent displays) and are potentially advantageous to both predator and prey. Here we present data on a tail display performed by Gonatodes albogularis, a diurnal tropical gecko. We performed transect surveys in three habitats near Bogotá in Colombia. Geckos detected during transects were approached by the observer in a standardized way, and details of their tailwaving displays were recorded. In control recordings animals were watched from a distant site without approaching them. Results showed sexual differences in tail-waving display: when approached by the observer, males performed this behavior more frequently than females. We found no significant differences between males and females in flight-initiation distances and height above the substratum when they were initially located. Results also showed that males displayed more frequently when approached than when the simulated predator remained stationary. We interpret these results as evidence that the display functions as a pursuit-deterrent signal to potential predators. However, as some tail displays were performed in the presence of conspecifics, the display may also have a social function.

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Seasonality in Diet, Perch Use, and Reproduction of the Gecko Gonatodes humeralis from Eastern Brazilian Amazon

Cited by 25 publications

References 21 publications

Effects of season, sex and age on the diet of Homonota fasciata (Squamata, Phyllodactylidae) from Monte region of Argentina

Effects of season, sex and age on the diet of Homonota fasciata (Squamata, Phyllodactylidae) from Monte region of Argentina

Influence of structural habitat use on the thermal ecology of Gonatodes humeralis (Squamata: Gekkonidae) from a transitional forest in Maranhão, Brazil

Sex differences in antipredator tail-waving displays of the diurnal yellow-headed gecko Gonatodes albogularis from tropical forests of Colombia

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