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 | Acesso ao texto completo restrito à biblioteca da Embrapa Pantanal. Para informações adicionais entre em contato com cpap.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Pantanal. |
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Data corrente: |
18/11/2013 |
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Data da última atualização: |
24/07/2017 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
SILVEIRA, R. da; CAMPOS, Z.; THORBJARNARSON, J.; MAGNUSSON, W. E. |
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Afiliação: |
RONIS DA SILVEIRA, UFAM; ZILCA MARIA DA SILVA CAMPOS, CPAP; JOHN THORBJARNARSON, WILDLIFE CONSERVATION SOCIETY; WILLIAM E. MAGNUSSON, INPA. |
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Título: |
Growth rates of black caiman (Melanosuchus niger) and spectacled caiman (Caiman crocodilus) from two different Amazonian flooded habitats. |
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Ano de publicação: |
2013 |
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Fonte/Imprenta: |
Amphibia-Reptilia, v. 34, p. 437-449, 2013. |
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ISSN: |
0173-5373 |
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DOI: |
10.1163/15685381-00002896 |
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Idioma: |
Inglês |
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Conteúdo: |
Rates of growth and survival in wild populations are affected by the physical environment, biotic interactions, and density-dependent processes, such as growth and fecundity. However, the relative importance of these factors in longlived reptiles is poorly understood. We analyzed growth rates of Melanosuchus niger and Caiman crocodilus coexisting in two areas of the Brazilian Amazon with very different environmental characteristics. Growth rates of Caiman crocodilus at the two sites were similar, but M. niger grew more slowly in the area with higher productivity and higher density of caimans. Growth rates of the same species from other sites and of the temperate-zone Alligator mississippiensis indicate large differences among sites, but little evidence that these differences are primarily due to differences in productivity or temperature. Demographic models used to estimate sustained yields from caiman harvests should take into account the likely importance of density-dependent growth. |
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Palavras-Chave: |
Mark-recapture. |
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Thesaurus Nal: |
Alligatoridae; Crocodylia; Demography. |
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Categoria do assunto: |
-- |
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Marc: |
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001 1971349
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008 2013 bl uuuu u00u1 u #d
022 $a0173-5373
024 7 $a10.1163/15685381-00002896$2DOI
100 1 $aSILVEIRA, R. da
245 $aGrowth rates of black caiman (Melanosuchus niger) and spectacled caiman (Caiman crocodilus) from two different Amazonian flooded habitats.
260 $c2013
520 $aRates of growth and survival in wild populations are affected by the physical environment, biotic interactions, and density-dependent processes, such as growth and fecundity. However, the relative importance of these factors in longlived reptiles is poorly understood. We analyzed growth rates of Melanosuchus niger and Caiman crocodilus coexisting in two areas of the Brazilian Amazon with very different environmental characteristics. Growth rates of Caiman crocodilus at the two sites were similar, but M. niger grew more slowly in the area with higher productivity and higher density of caimans. Growth rates of the same species from other sites and of the temperate-zone Alligator mississippiensis indicate large differences among sites, but little evidence that these differences are primarily due to differences in productivity or temperature. Demographic models used to estimate sustained yields from caiman harvests should take into account the likely importance of density-dependent growth.
650 $aAlligatoridae
650 $aCrocodylia
650 $aDemography
653 $aMark-recapture
700 1 $aCAMPOS, Z.
700 1 $aTHORBJARNARSON, J.
700 1 $aMAGNUSSON, W. E.
773 $tAmphibia-Reptilia$gv. 34, p. 437-449, 2013.
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