Field body temperatures of the amphisbaenid lizard Blanus cinereus

Martı́n, José; López, Pílar; Salvador, Alfredo

doi:10.1163/156853890x00492

Cited by 27 publications

(7 citation statements)

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“…Number (N), volume (in mm 3 ) (V), frequency (F), and importance value (VI) of the prey in the diet of Amphisbaena munoai Klappenbach, 1969 and Anops kingi Bell, 1833 in Escudo Sul-Rio-Grandense, southern Brazil (NIA, non-identified arthropods). (MARTÍN et al, 1990;LÓPEZ et al, 1998), and for a fossorial snake Atractus reticulatus Boulenger, 1885 in an area close to the area of the present study in southern Brazil (BALESTRIN et al, 2007). However, studies on the physiology and habits of each species, as well as on the specific conditions of the soil involved, would be necessary for a better assessment of this hypothesis.…”

Section: Discussionmentioning

confidence: 53%

“…However, areas under the influence of temperate climate seem to favor the study of some species due to the easy access to the animals in their environment, as mentioned for Blanus cinereus (Vandelli, 1797) in Europe (GIL et al 1993;LÓPEZ & MARTÍN, 1994LÓPEZ & SALVADOR, 1992LÓPEZ et al 1991LÓPEZ et al , 1998LÓPEZ et al , 2002MARTÍN et al 1990MARTÍN et al , 2000, and observed here for Amphisbaena munoai and Anops kingi in southern Brazil.…”

Section: Amphisbaena Munoai Anops Kingimentioning

confidence: 56%

“…All 510 captured specimens of Amphisbaena munoai and 137 captured specimens of Anops kingi were found hiding only under decomposing barks but almost totally under stones. Amphisbaenians could get heat from the rocks to enhance their body temperature without exposing themselves to the ground surface, diminishing the predation risk (MARTÍN et al 1990(MARTÍN et al , 1991LÓPEZ et al 1998).…”

Section: Discussionmentioning

confidence: 99%

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Reproduction and feeding ecology of Amphisbaena munoai and Anops kingi (Amphisbaenia, Amphisbaenidae) in the Escudo Sul-Rio-Grandense, southern Brazil

Balestrin

Cappellari

2011

Iheringia, Sér. Zool.

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ABSTRACT. This study presents original data on the reproduction and feeding ecology of two syntopic amphisbaenians, Amphisbaena munoai Klappenbach, 1969 and Anops kingi Bell, 1833, from southern Brazil. Sampling was carried out from April 2004 to April 2006 at a highland area located in São Jerônimo and Barão do Triunfo municipalities, Rio Grande do Sul, Brazil. A total of 647 amphisbaenians were collected, 510 specimens of A. munoai and 137 specimens of A. kingi, of which 130 and 93, respectively, had their gonads and gut content analyzed. Both species presented a unimodal pattern of seasonal distribution, sexually mature females with significantly larger snout vent length (SVL) than sexually mature males, and seasonal reproductive cycle. Adults of A. kingi had significantly larger (SVL) than those of Amphisbaena munoai. Both species had generalist diets, but termites (Isoptera) was a staple item in their diet. Greater predominance of insect larvae was observed in the diet of A. kingi, which may be due to its larger body in comparison to A. munoai. Insect larvae ingested by A. kingi were significantly larger than those ingested by A. munoai. Diets of adult males and females of both species were not significantly different. The ontogenetic diet comparison in both species revealed significant numerical differences, with adults consuming higher numbers of prey.KEYWORDS. Seasonality, sexual dimorphism, diet. gônadas e conteúdo alimentar analisados. Ambas as espécies apresentaram padrão unimodal de distribuição sazonal, fêmeas sexualmente maduras com comprimento rostro cloacal (CRC) significativamente maior que o dos machos sexualmente maduros e ciclo reprodutivo sazonal. Adultos de A. kingi apresentaram (CRC) significativamente maior do que em adultos de Amphibaena munoai. As duas espécies apresentaram diversas categorias alimentares na composição de suas dietas, entretanto térmites (Isoptera) parecem compor um elemento base. Uma maior predominância de larvas de insetos foi observada na dieta de A. kingi em relação a A. munoai, o que pode estar relacionado ao maior tamanho do corpo da primeira espécie. Larvas de insetos ingeridas por A. kingi foram significativamente maiores do que aquelas ingeridas por A. munoai. Em ambas as espécies não foram encontradas diferenças significativas nas dietas de machos e fêmeas adultos, mas em uma comparação ontogenética, foram observadas diferenças significativas numéricas, sendo que adultos ingeriram um número maior de presas que juvenis. RESUMO. Reprodução e ecologia alimentar de PALAVRAS-CHAVE.Sazonalidade, dimorfismo sexual, dieta.

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Section: Discussionmentioning

confidence: 53%

Section: Amphisbaena Munoai Anops Kingimentioning

confidence: 56%

Section: Discussionmentioning

confidence: 99%

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Reproduction and feeding ecology of Amphisbaena munoai and Anops kingi (Amphisbaenia, Amphisbaenidae) in the Escudo Sul-Rio-Grandense, southern Brazil

Balestrin

Cappellari

2011

Iheringia, Sér. Zool.

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“…The only other species of the Amphisbaenidae that has previously been studied, A. mertensi, presented an average body temperature of 21.4 °C (SD = 2.7, range = 15.5-26.0 °C, n = 52) (Abe 1984). Similarly, in studies with Trogonophis wiegmanni Kaup, 1830, the range was between 17.6 and 27.6 °C, and thermoregulation and microhabitat selection were confirmed (López et al 2002, Civantos et al 2003; in studies with Blanus cinereus, the range was 19.6-25.2 °C (Martín et al 1990), and selection of soil depth and rocks during the day was observed (Martín et al 1991, López et al 1998. Diplometopon zarudny Nikolsky, 1907, an amphisbaenid with nocturnal habits, has a similar average body temperature (26.4 °C) in Central Saudi Arabia (Al-Johany 1999).…”

Section: Discussionmentioning

confidence: 88%

“…These have shown that Amphisbaena mertensii Strauch, 1881 (Abe, 1984), Blanus cinereus (Vandelli, 1797) (Martín et al 1990, 1991, Gil et al 1993, López et al 1998, Diplometopon zarudny Nikolsky, 1907(Al-Johany 1999, and Trogonophis wiegmanni Kaup, 1830(Gatten and McClung 1981, López et al 2002, Civantos et al 2003 thermoregulate and select particular microhabitats. However, only one study has investigated the thermal biology of the family Amphisbaenidae Gray, 1825, which was conducted by Abe (1984) and determined the preferred temperature of A. mertensii Strauch, 1881 in Brazil under field and laboratory conditions.…”

Section: Introductionmentioning

confidence: 99%

Thermal biology of Amphisbaena munoai (Squamata: Amphisbaenidae)

Matias¹,

Verrastro²

2018

Zoologia

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ABSTRACT. Studies on the thermal biology of fossorial reptiles that examine the relationship between the body temperature and thermal environment are needed to determine the extent of their thermoregulation abilities. This study assessed the thermal biology of Amphisbaena munoai Klappenbach, 1969 in the rocky fields of the Rio Grande do Sul and in the laboratory.The body temperature of most individuals was between 24 and 30 °C, both in the field (n = 81) and laboratory (n = 19).More individuals were caught in winter (n = 55) and spring (n = 60) than in summer (n = 25) and fall (n = 45), and in spring, individuals showed similar nocturnal and diurnal activities. In the laboratory, we found individuals with body temperatures up to 5 °C higher than the ambient temperature (n = 4), suggesting that some physiological mechanisms participate in the thermoregulation of these animals. Amphisbaena munoai is a thigmothermic species that is capable of actively regulating its temperature by selecting microhabitats such that its various activities occur within an ideal temperature range. This study is the first to evaluate the effect of seasonality and diurnal and nocturnal variations on the thermoregulation of an amphisbaenid.

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Chemosensory predator recognition induces specific defensive behaviours in a fossorial amphisbaenian

López

Martı́n

2001

Animal Behaviour

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Field body temperatures of the amphisbaenid lizard Blanus cinereus

Cited by 27 publications

References 11 publications

Reproduction and feeding ecology of Amphisbaena munoai and Anops kingi (Amphisbaenia, Amphisbaenidae) in the Escudo Sul-Rio-Grandense, southern Brazil

Reproduction and feeding ecology of Amphisbaena munoai and Anops kingi (Amphisbaenia, Amphisbaenidae) in the Escudo Sul-Rio-Grandense, southern Brazil

Thermal biology of Amphisbaena munoai (Squamata: Amphisbaenidae)

Chemosensory predator recognition induces specific defensive behaviours in a fossorial amphisbaenian

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