Artigo

Growth rates of paleosuchus palpebrosus at the southern limit of its range

We estimated growth rates of Dwarf Caiman (Paleosuchus palpebrosus) with capture- recapture data from 40 individuals collected over 6 yr in streams surrounding the Brazilian Pantanal, near the southern limit of the species' distribution. Repeated recaptures of eight animals indicate that withinindiv...

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Autor principal: Campos, Zilca M.S.
Outros Autores: Magnusson, William Ernest, Marques, Vanílio
Grau: Artigo
Idioma: English
Publicado em: Herpetologica 2020
Assuntos:
Age
Body Size
Crocodilian
Growth Curve
Growth Rate
Nesting
Population Distribution
Sexual Maturity
Pantanal
Acesso em linha: https://repositorio.inpa.gov.br/handle/1/17784
id oai:repositorio:1-17784
recordtype dspace
spelling oai:repositorio:1-17784 Growth rates of paleosuchus palpebrosus at the southern limit of its range Campos, Zilca M.S. Magnusson, William Ernest Marques, Vanílio Age Body Size Crocodilian Growth Curve Growth Rate Nesting Population Distribution Sexual Maturity Pantanal We estimated growth rates of Dwarf Caiman (Paleosuchus palpebrosus) with capture- recapture data from 40 individuals collected over 6 yr in streams surrounding the Brazilian Pantanal, near the southern limit of the species' distribution. Repeated recaptures of eight animals indicate that withinindividual variation is much greater than between-individual variation, possibly reflecting climatic influences. Growth rates of juveniles increased linearly until individuals were about 28 cm snout-vent length (SVL), and then growth rates decreased gradually after attaining that size. The rate of decrease, however, differed between males and females. Data for 30 juveniles with known age were used to validate the growth curve based on the growth rate-on-size analysis. The length of the smallest female recorded nesting (SVL=60 cm) allowed us to estimate the age at first reproduction to be about 8 yr for females. Our data do not support our initial hypothesis that P. palpebrosus would have slow growth rates and relatively old age at first reproduction, as has been suggested for Paleosuchus trigonatus. © 2013 by The Herpetologists' League, Inc. 2020-06-15T21:49:16Z 2020-06-15T21:49:16Z 2013 Artigo https://repositorio.inpa.gov.br/handle/1/17784 10.1655/HERPETOLOGICA-D-13-00005 en Volume 69, Número 4, Pags. 405-410 Restrito Herpetologica
institution Instituto Nacional de Pesquisas da Amazônia - Repositório Institucional
collection INPA-RI
language English
topic Age
Body Size
Crocodilian
Growth Curve
Growth Rate
Nesting
Population Distribution
Sexual Maturity
Pantanal
spellingShingle Age
Body Size
Crocodilian
Growth Curve
Growth Rate
Nesting
Population Distribution
Sexual Maturity
Pantanal
Campos, Zilca M.S.
Growth rates of paleosuchus palpebrosus at the southern limit of its range
topic_facet Age
Body Size
Crocodilian
Growth Curve
Growth Rate
Nesting
Population Distribution
Sexual Maturity
Pantanal
description We estimated growth rates of Dwarf Caiman (Paleosuchus palpebrosus) with capture- recapture data from 40 individuals collected over 6 yr in streams surrounding the Brazilian Pantanal, near the southern limit of the species' distribution. Repeated recaptures of eight animals indicate that withinindividual variation is much greater than between-individual variation, possibly reflecting climatic influences. Growth rates of juveniles increased linearly until individuals were about 28 cm snout-vent length (SVL), and then growth rates decreased gradually after attaining that size. The rate of decrease, however, differed between males and females. Data for 30 juveniles with known age were used to validate the growth curve based on the growth rate-on-size analysis. The length of the smallest female recorded nesting (SVL=60 cm) allowed us to estimate the age at first reproduction to be about 8 yr for females. Our data do not support our initial hypothesis that P. palpebrosus would have slow growth rates and relatively old age at first reproduction, as has been suggested for Paleosuchus trigonatus. © 2013 by The Herpetologists' League, Inc.
format Artigo
author Campos, Zilca M.S.
author2 Magnusson, William Ernest
Marques, Vanílio
author2Str Magnusson, William Ernest
Marques, Vanílio
title Growth rates of paleosuchus palpebrosus at the southern limit of its range
title_short Growth rates of paleosuchus palpebrosus at the southern limit of its range
title_full Growth rates of paleosuchus palpebrosus at the southern limit of its range
title_fullStr Growth rates of paleosuchus palpebrosus at the southern limit of its range
title_full_unstemmed Growth rates of paleosuchus palpebrosus at the southern limit of its range
title_sort growth rates of paleosuchus palpebrosus at the southern limit of its range
publisher Herpetologica
publishDate 2020
url https://repositorio.inpa.gov.br/handle/1/17784
_version_ 1787143189322268672
score 11.755432

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