The terrestrial reptile fauna of the Abrolhos Archipelago: species list and ecological aspects

Rocha, Carlos Frederico Duarte; Dutra, Guilherme; Vrcibradic, Davor; Menezes, Vanderlaine Amaral

doi:10.1590/s1519-69842002000200013

Cited by 35 publications

(41 citation statements)

References 8 publications

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“…This result is similar to those reported for other T. torquatus populations (e.g. Alvarez et al 1985, Fialho et al 2000, Rocha et al 2002, Dutra et al 2011) and also for various congeneric species (e.g. Vitt 1991, Colli et al 1992, Van Sluys 1993, Mesquita et al 2006, Rocha & Siqueira 2008.…”

Section: Discussionsupporting

confidence: 92%

Variation in the diet of the lizard Tropidurus torquatus along its coastal range in Brazil

et al. 2013

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The diet composition of lizards of a given species may vary among different populations. The feeding ecology of the tropidurid lizard Tropidurus torquatus was studied in 10 coastal areas in Brazil in order to detect to what extent the diet varies along its geographic range. A non-metric multidimensional scaling technique revealed three groups of localities according to the diet composition: one characterized by a relatively high consumption of Isoptera, one characterized by a relatively high proportion of plant matter, and one in which there was a great importance of Formicidae. We found a weak pattern of latitudinal differences in restingas regarding the general consumption of items by T. torquatus, probably because this is a generalist and opportunistic lizard, which consumes most of the available types of potential food items in the habitat. However, lizards from northern populations consumed a larger quantity of smaller items (e.g., Isoptera) than those from southern populations. In the southern populations, on the other hand, larger items such as Coleoptera, Lepidoptera larvae and fruits were more frequently consumed. It is likely that the observed interpopulational variation in some aspects of the feeding ecology of coastal T. torquatus is mainly given by food availability. Resumo: A composição da dieta de lagartos de uma determinada espécie pode variar entre diferentes populações. A ecologia alimentar do lagarto tropidurídeo Tropidurus torquatus foi estudada em 10 áreas da costa do Brasil a fim de detectar em que extensão a dieta varia ao longo de sua distribuição geográfica. Uma técnica de escalonamento multidimensional não-métrico revelou três grupos de localidades de acordo com a composição da dieta: um caracterizado por um relativamente alto consumo de Isoptera, um caracterizado pela relativamente alta proporção de material vegetal, e um em que houve uma grande importância de Formicidae. Nós encontramos um fraco padrão de diferença latitudinal nas restingas em relação ao consumo geral de itens por T. torquatus, provavelmente porque este é um lagarto generalista e oportunista, que consome a maioria dos tipos disponíveis de potenciais itens alimentares no habitat. No entanto, os lagartos das populações mais ao norte consumiram uma maior quantidade de menores itens (e.g., Isoptera) do que aqueles das populações mais ao sul. Nas populações mais ao sul, por outro lado, items maiores como Coleoptera, Lepdoptera, larvas e frutos foram mais frequentemente consumidos. É provável que a variação interpopulacional observada em alguns aspectos da ecologia alimentar de T. torquatus costeiros seja ocasionada principalmente pela disponibilidade de alimento. Palavras-chave: variação geográfica, ecologia alimentar, restinga, lagarto tropical, Tropiduridae.94 Siqueira, C.C. et al.

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Section: Discussionsupporting

confidence: 92%

Variation in the diet of the lizard Tropidurus torquatus along its coastal range in Brazil

et al. 2013

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“…Most information has come from studies carried out in mainland coastal habitats of Rio de Janeiro, Espírito Santo, and São Paulo States in southeastern Brazil (Vanzolini & Rebouças-Spieker, 1976;Rocha, 1994Rocha, , 2000, but the ecology of lizard populations living in insular habitats is mostly unknown, but for a few studies (e.g., Vanzolini & Rebouças-Spieker, 1976;Rocha et al, 2002). This lack of knowledge impedes understanding of how ecological differences may arise as a result of the insular environment.…”

Section: Introductionmentioning

confidence: 99%

“…The lizard Mabuya agilis (Scincidae) is widespread along the coastal plains of southeastern, and part of northeastern Brazil (Rocha, 2000;Rocha et al, 2002). Information regarding its ecology, including diet, has recently been published for mainland populations inhabiting restinga habitats , 1999Vrcibradic & Rocha, 1995a.…”

Section: Introductionmentioning

confidence: 99%

Diet of the lizard Mabuya agilis (Sauria; Scincidae) in an insular habitat (Ilha Grande, RJ, Brazil)

2004

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We examined the stomach contents of 21 specimens of Mabuya agilis (Sauria; Scincidae) collected during February 2001 at the restinga habitat of Praia do Sul, in Ilha Grande, RJ, Brazil. Diet was composed of various types of small arthropods, with no plant material being eaten. Spiders were the most important items in the diet, followed by orthopterans. Apart from the absence of isopterans, the diet of Mabuya agilis from this insular area was similar to those of other conspecific mainland populations. This suggests that factors such as insularity and the absence of other small sympatric lizards may not have a significant effect on the feeding habits of the Praia do Sul population.

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“…) and other general ecological aspects (VRCIBRADlC & ROCHA 1995, 1996ROCHA et al 2002a). The more the ecology of this species can be studied along different portions of its range, the more we can understand the range of variation of its ecological responses to the differences in habitat characteristics.…”

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confidence: 99%

Ecology of Mabuya agilis (Raddi) (Lacertilia, Scincidae) at the restinga of Grumari, Rio de Janeiro, southeastern Brazil

Vrcibradic

Rocha

2002

Rev. Bras. Zool.

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ABSTRACT. Some aspects of the ecology of the sk ink Mabuya agilis (Raddi, 1823) at the restinga habitat of Grumari, in Rio de Janeiro, Brazil are studied. Most of the lizards were first sighted on the ground, though a few were using perches (mainly cacti) up to 30 cm high. Mean body temperature in activity was 33.1 ± 2.4°C and was significantly correlated to air temperature. There was sexual dimorphism in size (snout-vent length -SVL), with females growing larger than males. Frequency of broken tai ls was hi gh overall (83%) and did not differ between sexes. Females and males are sex ually mature at 49 mm and 47 mm SVL, respecti vely. Brood size averaged 3.2 ± 1.0 (range 1-5) and was positively and significantly related to female SVL (r = 0.65, p = 0.001). Relative clutch mass (RCM) of seven gravid females averaged 0.250 ± 0.042, be ing relatively low compared to those of other congeners. The diet of M. agilis was composed basically of arthropods, with relatively large and soft-bodied arthropods such as spiders, caterpillars and homopterans being the most imp01tant prey. The results of our work confirm and expand the knowledge of ecological tendencies previously observed for M. agili.~ in other areas.

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The terrestrial reptile fauna of the Abrolhos Archipelago: species list and ecological aspects

Cited by 35 publications

References 8 publications

Variation in the diet of the lizard Tropidurus torquatus along its coastal range in Brazil

Variation in the diet of the lizard Tropidurus torquatus along its coastal range in Brazil

Diet of the lizard Mabuya agilis (Sauria; Scincidae) in an insular habitat (Ilha Grande, RJ, Brazil)

Ecology of Mabuya agilis (Raddi) (Lacertilia, Scincidae) at the restinga of Grumari, Rio de Janeiro, southeastern Brazil

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