Relative Effects of Size, Season and Species on the Diets of Some Amazonian Savanna Lizards

Magnusson, William E.; Silva, Eduardo Vieira da

doi:10.2307/1564823

Cited by 48 publications

(46 citation statements)

References 25 publications

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“…in brazil, other active foraging lizards species are known to prey on vertebrates (Cnemidophorus lemniscatusmagnusson & Silva, 1993;Kentropyx striatus -Vitt & carvalho, 1992;Ameiva ameiva zaluar & rocha, 2000). however, in the genus Cnemidophorus in brazil, only C. lemniscatus was previously reported eating hatchlings of sympatric lizards (magnusson & Silva, 1993). in restinga habitats, H. mabouia was previously found in the diet of the tropidurid lizard Tropidurus torquatus (araújo, 1991) and of the colubrid snakes Oxyrhopus guibei (colubridae) and Thamnodynastes cf.…”

Section: Discussionmentioning

confidence: 99%

Diet and foraging of the endemic lizard Cnemidophorus littoralis (Squamata, Teiidae) in the restinga de Jurubatiba, Macaé, RJ

et al. 2006

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We investigated the diet and foraging of the endemic teiid lizard Cnemidophorus littoralis in a restinga habitat in Jurubatiba, macaé -rJ. the stomach contents were removed, analyzed and identified to the order level. there was no relationship between C. littoralis morphological variables and number, length or volume of preys. termites (48.7%) and larvae (35.5%) were the most important prey items which occurred in the examined lizards´ stomachs. the diet did not differ between males and females. Cnemidophorus littoralis is an active forager and predominantly consumes relatively sedentary prey or prey that is aggregated in the environment. We also found an intact and undigested hatchling of the crepuscular/nocturnal gekkonid lizard Hemidactylus mabouia in the stomach of an adult male of C. littoralis, which indicates that C. littoralis is a potential source of mortality for individuals of H. mabouia in the restinga de Jurubatiba.

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Section: Discussionmentioning

confidence: 99%

Diet and foraging of the endemic lizard Cnemidophorus littoralis (Squamata, Teiidae) in the restinga de Jurubatiba, Macaé, RJ

et al. 2006

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“…Other known examples from omnivorous species are populations of Podarcis hispanica (Lacertidae) from the Iberian Peninsula (Mellado et al, 1975) compared with populations from Columbretes Islands (Castilla and Bawens, 1991), and Cnemidophorus lemniscatus and Ameiva ameiva (Teiidae) from Providence Island (Janzen, 1973) which are more omnivorous than populations in several localities on the mainland (e.g. Vega et al, 1988;Magnusson and da Silva, 1993;Vitt and Carvalho, 1995;Colli et al, 1997). Although clearly more data are necessary, these intraspecific comparisons suggest that the increase in the use of fleshy fruits by island lizards is in part due to some common ecological factors occurring in these insular habitats.…”

Section: Why Islands?mentioning

confidence: 99%

“…Extensive use of fleshy fruits (high frequency of occurrence or volume; > 40%) in the diet has been found in: Ameiva exsul (Patterson, 1928), Ameiva ameiva and Cnemidophorus lemniscatus (Janzen, 1973), Anolis equestris (Brach, 1976), Liolaemus nigromaculatus (Ortiz and Riveros, 1976), Podarcis spp. (Salvador, 1986;Pérez-Mellado et al, 2005), Leciocephalus carinatus (de Armas, 1987), Darevskia rudis (Franzen, 1991), Klentropyx striatus (Magnusson and da Silva, 1993), Tropidurus torquatus (Côrtes-Figueira et al, 1994), Lacerta lepida (Hódar et al, 1996), Cnemidophorus lemniscatus (Vitt et al, 1997), Gallotia spp. , Anolis garmani (Herrel et al, 2004) and Psammodromus algirus (Calviño-Cancela, 2005), among others.…”

Section: Lizards As Seed Dispersers?mentioning

confidence: 99%

The importance of lizards as frugivores and seed dispersers.

Valido

Olesen²

2007

Seed Dispersal: Theory and Its Application in a Changing World

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This chapter reviews and synthesizes the available evidence for fruit-eating lizards around the world to call attention to the fact that lizards need to be considered as frugivores and potential seed dispersal agents, especially in certain habitats and situations. The geographical distribution of saurochory, the morphological characteristics of fleshy fruits consumed by lizards, the taxonomic affiliation of both lizard and plant species, and the characteristics of their role as seed dispersers, are addressed.

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“…This also may result from the low variation in the size of prey consumed by this lizard (mainly the most consumed, i.e., isopods), whose small body size limits the range of prey sizes that it can swallow. Body size and head dimensions are intrinsic factors that may affect strongly the patterns of prey consumption in lizards, with larger body and head sizes enabling an individual to consume more prey of a given size and prey of larger sizes, respectively (e.g., TOFT 1985, MAGNUSSON & SILVA 1993, MENEZES et al 2008.…”

Section: Discussionmentioning

confidence: 99%

Diet of the lizard Ecpleopus gaudichaudii (Gymnophthalmidae) in Atlantic Rainforest, state of Rio de Janeiro, Brazil

Maia¹,

Almeida‐Gomes²,

Siqueira³

et al. 2011

Zoologia (Curitiba, Impr.)

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In this study we analyzed the diet of the gymnophthalmid lizard Ecpleopus gaudichaudii Duméril & Bibron, 1839, a typical inhabitant of the forest-floor leaf litter, in an Atlantic Forest area in the state of Rio de Janeiro, southeastern Brazil. The 26 individuals sampled during the study had a mean snout-vent length (SVL) of 36.2 ± 4.2 mm and a mean jaw width (JW) of 4.1 ± 0.5 mm. We did not find differences in SVL between males and females, though the sexes differed in JW when the effect of body size was factored out, with females presenting higher values. The diet of the lizards was composed exclusively of arthropods, especially isopods and orthopterans. The similarity in trophic niches among seasons (volumetric and numerical proportions of prey categories consumed) were 0.096 and to 0.43, respectively. There were also no detectable seasonal differences in mean number and mean volume of prey ingested, as well as no significant influence of lizard SVL on prey number and of lizard JW on mean prey volume, which may reflect the tendency of E. gaudichaudii to feed on few, relatively large prey

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Relative Effects of Size, Season and Species on the Diets of Some Amazonian Savanna Lizards

Cited by 48 publications

References 25 publications

Diet and foraging of the endemic lizard Cnemidophorus littoralis (Squamata, Teiidae) in the restinga de Jurubatiba, Macaé, RJ

Diet and foraging of the endemic lizard Cnemidophorus littoralis (Squamata, Teiidae) in the restinga de Jurubatiba, Macaé, RJ

The importance of lizards as frugivores and seed dispersers.

Diet of the lizard Ecpleopus gaudichaudii (Gymnophthalmidae) in Atlantic Rainforest, state of Rio de Janeiro, Brazil

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