Thermoregulation in the Andean lizard Anolis heterodermus (Squamata: Dactyloidae) at high elevation in the Eastern Cordillera of Colombia.

Méndez-Galeano, Miguel Ángel; Calderón‐Espinosa, Martha L.

doi:10.1590/1678-4766e2017018

Cited by 9 publications

(6 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It has been proposed that water temperature may influence gut microbiota of fishes (Neuman et al., ). Despite body temperature of lizards highly depends on the ambient temperature, they can maintain a relatively stable body temperature through behavioral thermoregulation (Gvoždík & Castilla, ; Méndez‐Galeano & Calderón‐Espinosa, ). Therefore, the effect of low ambient temperature on intestinal microbiota may be buffered by thermoregulation, and our present results may reflect the effect of hypoxia.…”

Section: Discussionmentioning

confidence: 99%

Changes in intestinal microbiota across an altitudinal gradient in the lizard Phrynocephalus vlangalii

Zhang

Tang

et al. 2018

Ecology and Evolution

View full text Add to dashboard Cite

High altitude is an important driving force in animal evolution. However, the effect of altitude on gut microbial communities in reptiles has not been examined in detail. Here, we investigated the intestinal microbiota of three populations of the lizard Phrynocephalus vlangalii living at different altitudes using 16S rRNA gene sequencing. Bacteroidetes, Firmicutes, and Proteobacteria were the most abundant phyla. Bacteroides, Odoribacter, and Parabacteroides were the most abundant genera. Significant differences in the intestinal microbiota composition were found among the three populations from different altitudes. The proportions of Verrucomicrobia and Akkermansia decreased, whereas Bacteroides increased significantly with altitude. Greater abundance of Bacteroides at higher altitude led to the fractional increase in the phylum Bacteroides relative to other phyla. Hypoxia may be the main factor that caused intestinal microbiota variation in P. vlangalii along the altitude gradient. Overall, our study suggested that the community composition and structure of intestinal microbiota of the lizard P. vlangalii varied along altitudes, and such differences likely play a certain role in highland adaptation. Our findings warrant a further study that would determine whether ambient and body temperatures play a key role in the modulation of intestinal microbiota in reptiles.

show abstract

Section: Discussionmentioning

confidence: 99%

Changes in intestinal microbiota across an altitudinal gradient in the lizard Phrynocephalus vlangalii

Zhang

Tang

et al. 2018

Ecology and Evolution

View full text Add to dashboard Cite

show abstract

“…We captured 30 adult specimens of Anolis heterodermus (17 males: SVL = 65.7 mm average ± 4.80 mm SD and 13 females: SVL = 64.5 ± 5.69 mm) from the municipality of Tabio, Cundinamarca (Colombia) between April and May 2016. The individuals were transported to the Evolutionary Ecology Lab of the National University of Colombia in Bogotá, where they were kept in terrariums with branches and plant material at room temperature (17-19 ° C), thanks to the temperature in Bogotá is equivalent to the operational temperature of the species in its natural environment (Méndez-Galeano & Calderón-Espinosa, 2017). Individuals were fed twice a day with small insects and the terrariums were sprayed with water twice a day to keep the environment humid.…”

Section: Methodsmentioning

confidence: 99%

APPENDICULAR MORPHOLOGY AND LOCOMOTOR PERFORMANCE OF TWO MORPHOTYPES OF CONTINENTAL ANOLES:Anolis heterodermusANDAnolis tolimensis

Ríos-Orjuela

Camacho-Bastidas

Jerez

2019

Preprint

View full text Add to dashboard Cite

9Anolis lizards have been a model of study in ecomorphology in the Caribbean islands 10 because species with the same type of microhabitat share similar morphological features. 11But despite their great diversity, little is known about continental species. We analyzed the 12 relationship between the anatomical characteristics of the appendicular skeleton and the 13 locomotor performance of two Anolis species found in Colombia that have different use of 14 habitat. Anolis heterodermus a strictly arboreal species was compared with Anolis 15 tolimensis that inhabits the lower strata of vegetation. These two species differ in their body 16 plan, not only in body shape and external morphological features, but also in the skeleton 17 and appendicular musculature. The results highlight the muscle and bone specializations 18 associated with the use of habitat in this genus, such as the presence of more robust bones 19 to enlarge the surface of muscle insertion, the thickening and loss of carpal parts, 20 thickening of tendons associated with the manus, and greater development of muscle mass 21 in the forelimbs by A. heterodermus with respect to A. tolimensis. These differences are 22 related to the use of the microhabitat and the locomotor style of each species. 23Herrel et al. (2008). Additionally, we classified the muscles into functional groups 88 following Herrel et al. (2008). We extracted the muscles and stored them in vials with 70% 89 alcohol, and we weighed them by functional groups using a PRECISA XB220A ± 0.01g 90 analytical balance. The muscles for A. heterodermus were recorded in detail in Tables 1 91 and 2, and we listed the differences with A. tolimensis. 92The description of the appendicular skeleton of A. heterodermus and A. tolimensis was 93 based on two adult specimens of each species (ICN-R-6287, 6251, 13036, 13027). We 94 prepared the skeletons using the technique of differential staining for bone and cartilage 95 from Wassersug (1976). The osteological description follows the Krause nomenclature 96 (1989), and the description of the sesamoids follows Jerez et al. (2010). Observations were 97 made with a NIKON C-LEDS stereoscope, and specimens were photographed with a 98 LEICA M125 motorized stereomicroscope. 99For the locomotor performance tests we obtained live specimens of the two species. We 100 captured 30 adult specimens of Anolis heterodermus (17 males: SVL = 65.7 mm average ± 101 4.80 mm SD and 13 females: SVL = 64.5 ± 5.69 mm) from the municipality of Tabio, 102 Cundinamarca (Colombia) between April and May 2016. The individuals were transported 103 to the Evolutionary Ecology Lab of the National University of Colombia in Bogotá, where 104 they were kept in terrariums with branches and plant material at room temperature (17-19 ° 105 C), thanks to the temperature in Bogotá is equivalent to the operational temperature of the 106 species in its natural environment (Méndez-Galeano & Calderón-Espinosa, 2017). 107Individuals were fed twice a day with small insects and the terrariums were spraye...

show abstract

“…The month with the highest rainfall is February, with a monthly average precipitation of 196 mm, whereas in the dry season rainfall ranges from 6 mm to 13 mm. These conditions determinate a significant variation in relative humidity, which reaches 100% in March and 48% in September [14,23]. 196 mm, whereas in the dry season rainfall ranges from 6 mm to 13 mm.…”

Section: Study Areamentioning

confidence: 99%

“…Ectotherm organisms use solar radiation to elevate their body temperatures [13]. Many works have shown how the environmental temperature affects reptile activity patterns, but other variables such as solar radiation have been less explored [13][14][15]. Reptiles can attain a higher body temperature with a higher solar radiation (measured as Wh/m 2 ), and therefore, this variable should be also considered in studies on activity patterns.…”

Section: Introductionmentioning

confidence: 99%

Activity Patterns of Stenocercus iridescens in an Ecuadorian Coastal Agroecosystem: Is Temperature Important?

et al. 2022

View full text Add to dashboard Cite

Circadian rhythms of Neotropical lizards have been poorly studied, which represents a problem when designing ecological studies or monitoring such species based on direct observations. In this work, 1000 m-long transects were established in an agroecosystem area of the Ecuadorian coast region to study the activity patterns of Stenocercus iridescens. The number of individuals (as a response variable) was correlated with local weather conditions: temperature, precipitation, and heliophany (duration of the solar brightness). We carried out the study in both dry and rainy seasons, and during different time ranges. The time range in which the transects were performed was the most important predictor, and the activity peak was established between 16:00 h and 18:00 h. Heliophany negatively affected lizard activity, but only on the days with higher heliophany during the dry season, whereas temperature was not a significant predictor. Our results suggest that in an area where temperature is relatively constant and the solar radiation is high, particularly during the dry season, the heliophany (an indirect measure of solar radiation) can affect ectotherm activity patterns more than temperature, particularly in open habitats such as agroecosystems.

show abstract

Thermoregulation in the Andean lizard Anolis heterodermus (Squamata: Dactyloidae) at high elevation in the Eastern Cordillera of Colombia.

Cited by 9 publications

References 43 publications

Changes in intestinal microbiota across an altitudinal gradient in the lizard Phrynocephalus vlangalii

Changes in intestinal microbiota across an altitudinal gradient in the lizard Phrynocephalus vlangalii

APPENDICULAR MORPHOLOGY AND LOCOMOTOR PERFORMANCE OF TWO MORPHOTYPES OF CONTINENTAL ANOLES:Anolis heterodermusANDAnolis tolimensis

Activity Patterns of Stenocercus iridescens in an Ecuadorian Coastal Agroecosystem: Is Temperature Important?

Contact Info

Product

Resources

About