Reproductive behavior of Tropidurus spinulosus (Squamata: Tropiduridae) in captivity

Pelegrín, Nicolás

doi:10.11606/issn.2316-9079.v18i1p123-126

Cited by 6 publications

(6 citation statements)

References 11 publications

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“…Laspiur, unpublished data). This type of behavior was observed in several other species of lizards, such as P. bocagei (Galán, 1997), Tropidurus spinulosus (Pelegrin, 2019) and Phymaturus cf. palluma (Eisenberg and Werning, 2012).…”

Section: Discussionsupporting

confidence: 59%

Impact of temperature on bite force and bite endurance in the Leopard Iguana (Diplolaemus leopardinus) in the Andes Mountains

Vicenzi

Laspiur

Sassi

et al. 2020

Journal of Experimental Biology

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In ectotherms, temperature exerts a strong influence on the performance of physiological and ecological traits. One approach to understand the impact of rising temperatures on animals and their ability to cope with climate change is to quantify variation in thermal-sensitive traits. Here, we examined the thermal biology, the temperature dependence and the thermal plasticity of bite force (endurance and magnitude) in Diplolaemus leopardinus, an aggressive and territorial lizard, endemic to Mendoza province, Argentina. Our results indicated that this lizard behaves like a moderate thermoregulator which uses the rocks of its environment as the main heat source. Bite endurance was not influenced by head morphometry and body temperature, whereas bite force was influenced by head length and jaw length, and exhibited thermal dependence. Before thermal acclimation treatments, the maximum bite force for D. leopardinus occured at the lowest body temperature and fell sharply with increasing body temperature. After acclimation treatments, lizards acclimated at higher temperatures exhibited greater bite force. Bite force showed phenotypic plasticity, which reveals that leopard iguanas are able to maintain (and even improve) their bite force under a rising-temperature scenario.

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Section: Discussionsupporting

confidence: 59%

Impact of temperature on bite force and bite endurance in the Leopard Iguana (Diplolaemus leopardinus) in the Andes Mountains

Vicenzi

Laspiur

Sassi

et al. 2020

Journal of Experimental Biology

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“…Pigmentation of the ventral regions has been associated with male dominance in some lizard species 30,63,64 and, in T . spinulosus , is shown during males’ push-ups , performed in ritual courtship 65 and combat (NR, unpublished data). Besides the female biased UV dichromatism we found, we also measured faint UV traces associated with green colors on the labial scales of some males; these traces could prove interesting, since males perform a gaping display during male ritual combat and UV mouth coloration is associated with male fighting ability in other species 31,66 .…”

Section: Discussionmentioning

confidence: 99%

“…coloration of the cloacal region of females shifts from white to orange/red during breeding season (NR, unpublished data). The cloaca is shown to conspecifics during the tail whipping display in females during courtship/copulation 65 and in males during male-male interactions (NR, unpublished data).…”

Section: Discussionmentioning

confidence: 99%

“…in T . semitaeniatus cloacal pigmentation correlates with sperm production in males 81 Tail whipping: Shown by females during courtship 65 and sometimes in male-male interactions (NR, unpublished data)16DorsumIn some species, male dorsal coloration may provide social status signals 32,82 . Tropidurus semitaeniatus performs a dorsum display during combat 59 No displays in T .…”

Section: Methodsmentioning

confidence: 99%

“…spinulosus were observed for this region.42FlanksTogether with the ventral region, this is one of the most important parts in lizard sexual and social communication 10,30,52 Circulation display: Shown by male during male ritual combat ( 50 ; NR, unpublished data). Lateral approach: male approach to females at the beginning of the courtship 65 .84HeadReproductive coloration extends to this region in males of some species 83 .No displays in T . spinulosus were observed for this region.20LegsMany lizard species use legs to communicate (waving 35 ).No displays in T .…”

Section: Methodsmentioning

confidence: 99%

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Sexual dichromatism and color diversity in the spiny lava lizard Tropidurus spinulosus using lizard visual modelling

Rossi

Benitez‐Vieyra

Cocucci

et al. 2019

Sci Rep

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Colors are important vehicles for social signals in many taxa. In Squamata, previous studies have linked color characteristics and chromatic diversity to sexual selection and, particularly, species showing male-biased body size dimorphism also showed male-biased dichromatism and color diversity. Sexual dichromatism may occur in body regions used for conspecific communication and it may be expressed at wavelengths, such as ultraviolet, easily perceivable by conspecifics. We tested this prediction in a social lizard model, Tropidurus spinulosus, using spectrophotometry and visual modelling which enable colors to be interpreted as the individuals of the same taxon see them. Our results indicate that sexual dichromatism occurs in the ventral regions and the flanks, which are the body regions involved in sexual displays. Males show greater color diversity, having larger color volumes and more contrasting colors. These findings reinforce the idea that sexual selection towards males is coupled with the evolution of male-biased, diverse, coloration which could act as a signal in social reproductive contexts.

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A novel epidermal gland type in lizards (α-gland): structural organization, histochemistry, protein profile and phylogenetic origins

Carvalho

Jeckel

Nisa

et al. 2020

Zoological Journal of the Linnean Society

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Chemical signalling is an essential component of the communication system of lizards, and epidermal glands are responsible for producing semiochemicals that regulate many behavioural interactions. Two types of epidermal glands have been previously described for lizards: follicular and generation glands. Generation glands are characterized by the aggregation of novel glandular cell types in the epithelium and the lack of a lumen or external pore. Despite the fact that several subtypes of generation glands have been recognized over the years, the morphology, taxonomic distribution, function and evolutionary origins of generation glands remain nearly unexplored in Neotropical clades. Here, we describe a novel escutcheon-type generation gland (‘α-gland’) for lizards of the South American family Tropiduridae, characterize its structural and ultrastructural organization, and study the homology of the constituent parts in a phylogenetic framework. The α-glands emerged in the ancestor of Eurolophosaurus, Plica, Strobilurus, Tropidurus and Uracentron, and are found in at least 39 species with diverse ecological habits. We preliminarily analysed the protein profile of α-glands and discovered differential expression of protein components between sexes. Our investigations change the general view about epidermal gland homology, leading us to argue that generation and follicular glands are possibly more closely related functionally and evolutionarily than previously thought.

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Reproductive behavior of Tropidurus spinulosus (Squamata: Tropiduridae) in captivity

Cited by 6 publications

References 11 publications

Impact of temperature on bite force and bite endurance in the Leopard Iguana (Diplolaemus leopardinus) in the Andes Mountains

Impact of temperature on bite force and bite endurance in the Leopard Iguana (Diplolaemus leopardinus) in the Andes Mountains

Sexual dichromatism and color diversity in the spiny lava lizard Tropidurus spinulosus using lizard visual modelling

A novel epidermal gland type in lizards (α-gland): structural organization, histochemistry, protein profile and phylogenetic origins

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