Age structure, growth and longevity in the common toad, <em>Rhinella arenarum</em>, from Argentina
Age structure, growth and longevity was determined in the common toad, Rhinella arenarum, from a suburban pond located in the Pampa plains, central Argentina during two breeding seasons, in 2000 and 2008 by using skeletochronology, which relies on the analysis of the annual lines of arrested growth...
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doaj-49b58df2083942f692219b6c3999588b2020-11-25T01:54:55ZengFirenze University PressActa Herpetologica1827-96351827-96432015-06-0110110.13128/Acta_Herpetol-1514213560Age structure, growth and longevity in the common toad, <em>Rhinella arenarum</em>, from ArgentinaClarisa Bionda0Silvia Kost1Nancy Salas2Rafael Lajmanovich3Ulrich Sinsch4Adolfo Martino5Departamento de Ciencias Naturales; Facultad de Ciencias Exactas, Físico-Químicas y Naturales; Universidad Nacional de Río CuartoDepartment Biology, University of Koblenz, GermanyDepartamento de Ciencias Naturales; Facultad de Ciencias Exactas, Físico-Químicas y Naturales; Universidad Nacional de Río CuartoFacultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, Ciudad Universitaria El Pozo s/n (3000) Santa Fe, ArgentinaDepartment Biology, University of Koblenz, GermanyDepartamento de Ciencias Naturales; Facultad de Ciencias Exactas, Físico-Químicas y Naturales; Universidad Nacional de Río Cuarto Age structure, growth and longevity was determined in the common toad, Rhinella arenarum, from a suburban pond located in the Pampa plains, central Argentina during two breeding seasons, in 2000 and 2008 by using skeletochronology, which relies on the analysis of the annual lines of arrested growth (LAGs) in bones. Both females and males were captured in 2008, while only males were recorded in 2000. Females were significantly larger than males. Mean population age was 2.4 ± 0.9 years in 2000. In 2008, the difference in age was not significant between the sexes (Males: 3.0 ± 0.7, n = 21; Females: 2.6 ± 0.9, n = 12), neither between males in 2000 and 2008. The longevity in males of 2000 was 6 LAGs and exceeded that of males (5 LAGs) and females (4 LAGs) in 2008. Von Bertalanffy curves showed that the growth coefficient in the males of 2000 (K = 2.97 ± 0.47) was almost double that of females (K = 1.21 ± 0.10) and males (K = 1.01 ± 0.14) of 2008. Males and females Rhinella arenarum show different morphological and life history traits and the year of sampling can significantly influence the estimation of the studied parameters such as age at maturity and growth rates. https://oaj.fupress.net/index.php/ah/article/view/1740 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Clarisa Bionda Silvia Kost Nancy Salas Rafael Lajmanovich Ulrich Sinsch Adolfo Martino |
spellingShingle |
Clarisa Bionda Silvia Kost Nancy Salas Rafael Lajmanovich Ulrich Sinsch Adolfo Martino Age structure, growth and longevity in the common toad, <em>Rhinella arenarum</em>, from Argentina Acta Herpetologica |
author_facet |
Clarisa Bionda Silvia Kost Nancy Salas Rafael Lajmanovich Ulrich Sinsch Adolfo Martino |
author_sort |
Clarisa Bionda |
title |
Age structure, growth and longevity in the common toad, <em>Rhinella arenarum</em>, from Argentina |
title_short |
Age structure, growth and longevity in the common toad, <em>Rhinella arenarum</em>, from Argentina |
title_full |
Age structure, growth and longevity in the common toad, <em>Rhinella arenarum</em>, from Argentina |
title_fullStr |
Age structure, growth and longevity in the common toad, <em>Rhinella arenarum</em>, from Argentina |
title_full_unstemmed |
Age structure, growth and longevity in the common toad, <em>Rhinella arenarum</em>, from Argentina |
title_sort |
age structure, growth and longevity in the common toad, <em>rhinella arenarum</em>, from argentina |
publisher |
Firenze University Press |
series |
Acta Herpetologica |
issn |
1827-9635 1827-9643 |
publishDate |
2015-06-01 |
description |
Age structure, growth and longevity was determined in the common toad, Rhinella arenarum, from a suburban pond located in the Pampa plains, central Argentina during two breeding seasons, in 2000 and 2008 by using skeletochronology, which relies on the analysis of the annual lines of arrested growth (LAGs) in bones. Both females and males were captured in 2008, while only males were recorded in 2000. Females were significantly larger than males. Mean population age was 2.4 ± 0.9 years in 2000. In 2008, the difference in age was not significant between the sexes (Males: 3.0 ± 0.7, n = 21; Females: 2.6 ± 0.9, n = 12), neither between males in 2000 and 2008. The longevity in males of 2000 was 6 LAGs and exceeded that of males (5 LAGs) and females (4 LAGs) in 2008. Von Bertalanffy curves showed that the growth coefficient in the males of 2000 (K = 2.97 ± 0.47) was almost double that of females (K = 1.21 ± 0.10) and males (K = 1.01 ± 0.14) of 2008. Males and females Rhinella arenarum show different morphological and life history traits and the year of sampling can significantly influence the estimation of the studied parameters such as age at maturity and growth rates.
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url |
https://oaj.fupress.net/index.php/ah/article/view/1740 |
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