Reproductive biology of the amazon lava lizard (tropidurus torquatus) from the wet Chaco of Corrientes (Argentina) : congeneric comparisons of ecotypic and interspecific variations

Herein we describe the reproductive biology of a population of the Amazon Lava Lizard (Tropidurus torquatus (Wied-Neuwied, 1820)) from Corrientes, northeastern Argentina (Wet Chaco). We describe the male and female reproductive cycles, minimum body size for adults, reproductive output, mean relative...

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Autores principales: Ortíz, Martín Alejandro, Boretto, Jorgelina Mariela, Piantoni, Carla, Álvarez, Blanca Beatriz, Ibargüengoytía, Nora Ruth
Formato: Artículo
Lenguaje:Inglés
Publicado: Canadian Science Publishing 2021
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Acceso en línea:http://repositorio.unne.edu.ar/handle/123456789/28590
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id I48-R184-123456789-28590
record_format dspace
institution Universidad Nacional del Nordeste
institution_str I-48
repository_str R-184
collection RIUNNE - Repositorio Institucional de la Universidad Nacional del Nordeste (UNNE)
language Inglés
topic reproductive cycle
Squamata
tropidurid
cycle de reproduction
squamates
tropiduridés
spellingShingle reproductive cycle
Squamata
tropidurid
cycle de reproduction
squamates
tropiduridés
Ortíz, Martín Alejandro
Boretto, Jorgelina Mariela
Piantoni, Carla
Álvarez, Blanca Beatriz
Ibargüengoytía, Nora Ruth
Reproductive biology of the amazon lava lizard (tropidurus torquatus) from the wet Chaco of Corrientes (Argentina) : congeneric comparisons of ecotypic and interspecific variations
topic_facet reproductive cycle
Squamata
tropidurid
cycle de reproduction
squamates
tropiduridés
description Herein we describe the reproductive biology of a population of the Amazon Lava Lizard (Tropidurus torquatus (Wied-Neuwied, 1820)) from Corrientes, northeastern Argentina (Wet Chaco). We describe the male and female reproductive cycles, minimum body size for adults, reproductive output, mean relative clutch mass, fat body cycles, and sexual dimorphism. Our results were compared with data on the reproductive biology of Brazilian populations of T. torquatus and congeneric species. In Corrientes, males of T. torquatus exhibited a continuous reproductive cycle, but with annual variation of testicular parameters associated with spermatogenic activity. In contrast, females were reproductive only from winter to summer (July–February), laying at least two clutches each of six eggs, on average, per reproductive season. The relative clutch mass and egg size values in Corrientes were the highest reported for the species. The annual cycle of energy storage (as fat bodies) was inversely correlated with reproductive activity in both sexes. Males differed from females in snout–vent length, head size, interlimb length, and tail length. We observed interpopulational differences in relative clutch mass, egg volume and mass, incubation period and hatching time, and the minimum body size for sexual maturity probably as a result of phenotypic plasticity or adaptation to local environmental conditions and likely both.
format Artículo
author Ortíz, Martín Alejandro
Boretto, Jorgelina Mariela
Piantoni, Carla
Álvarez, Blanca Beatriz
Ibargüengoytía, Nora Ruth
author_facet Ortíz, Martín Alejandro
Boretto, Jorgelina Mariela
Piantoni, Carla
Álvarez, Blanca Beatriz
Ibargüengoytía, Nora Ruth
author_sort Ortíz, Martín Alejandro
title Reproductive biology of the amazon lava lizard (tropidurus torquatus) from the wet Chaco of Corrientes (Argentina) : congeneric comparisons of ecotypic and interspecific variations
title_short Reproductive biology of the amazon lava lizard (tropidurus torquatus) from the wet Chaco of Corrientes (Argentina) : congeneric comparisons of ecotypic and interspecific variations
title_full Reproductive biology of the amazon lava lizard (tropidurus torquatus) from the wet Chaco of Corrientes (Argentina) : congeneric comparisons of ecotypic and interspecific variations
title_fullStr Reproductive biology of the amazon lava lizard (tropidurus torquatus) from the wet Chaco of Corrientes (Argentina) : congeneric comparisons of ecotypic and interspecific variations
title_full_unstemmed Reproductive biology of the amazon lava lizard (tropidurus torquatus) from the wet Chaco of Corrientes (Argentina) : congeneric comparisons of ecotypic and interspecific variations
title_sort reproductive biology of the amazon lava lizard (tropidurus torquatus) from the wet chaco of corrientes (argentina) : congeneric comparisons of ecotypic and interspecific variations
publisher Canadian Science Publishing
publishDate 2021
url http://repositorio.unne.edu.ar/handle/123456789/28590
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