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Registro Completo |
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Biblioteca(s): |
Embrapa Pantanal. |
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Data corrente: |
04/12/2013 |
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Data da última atualização: |
04/12/2013 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
CAMPOS, Z.; MAGNUSSON, W. E.; MARQUES, V. |
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Afiliação: |
ZILCA MARIA DA SILVA CAMPOS, CPAP; WILLIAM E. MAGNUSSON, INPA; VANÍLIO MARQUES, ICMBio. |
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Título: |
Growth rates of Paleosuchus palpebrosus at the southern limit of its range. |
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Ano de publicação: |
2013 |
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Fonte/Imprenta: |
Herpetologica, v. 69, n. 4, p. 405-410, 2013. |
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Páginas: |
6p. |
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ISSN: |
0018-0831 |
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Idioma: |
Inglês |
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Conteúdo: |
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 (SVL¼60 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. |
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Palavras-Chave: |
Dwarf Caiman. |
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Thesaurus Nal: |
age; body size; Brazil; sexual maturity. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/93485/1/herpetologica-d-13-00005.pdf
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Marc: |
LEADER 01683naa a2200229 a 4500
001 1972836
005 2013-12-04
008 2013 bl uuuu u00u1 u #d
022 $a0018-0831
100 1 $aCAMPOS, Z.
245 $aGrowth rates of Paleosuchus palpebrosus at the southern limit of its range.
260 $c2013
300 $a6p.
520 $aWe 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 (SVL¼60 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.
650 $aage
650 $abody size
650 $aBrazil
650 $asexual maturity
653 $aDwarf Caiman
700 1 $aMAGNUSSON, W. E.
700 1 $aMARQUES, V.
773 $tHerpetologica$gv. 69, n. 4, p. 405-410, 2013.
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Registro original: |
Embrapa Pantanal (CPAP) |
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| Registros recuperados : 117 | |
| 8. |  | CAMPOS, Z.; MUNIZ, F.; MAGNUSSON, W. E. Extension of the geographical distribution of Schneider's Dwarf Caiman, Paleosuchus trigonatus (Schneider, 1801) (Crocodylia: Alligatoridae), in the Amazon-Cerrado transition, Brazil. Check List, v. 13, n. 4, p. 91-94.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 1 |
| Biblioteca(s): Embrapa Pantanal. |
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| Registros recuperados : 117 | |
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