|
|
Registro Completo |
Biblioteca(s): |
Embrapa Pantanal. |
Data corrente: |
23/02/1999 |
Data da última atualização: |
23/02/1999 |
Autoria: |
LUTZ, P. L.; DUNBAR-COOPER, A. |
Título: |
The nest environment of the American crocodile (Crocodylus acutus). |
Ano de publicação: |
1984 |
Fonte/Imprenta: |
Copeia, n.1, p.153-161, 1984. |
Idioma: |
Inglês |
Conteúdo: |
In the southern tip of the Everglades, Florida, a small population of the American crocodile, Crocodylus acutus builds nests in two quite different substrates, sand/shell and marl. Changes in temperature, soil water and gaseous composition were monitored in selected nets throughout incubation, and the gaseous resistance of the soil measured. Temperatures increased from approximately 30 C to a maximum of 34 C over incubation and no differences were found between the two nest types. The marl nests had a higher water content than the sand/shell nests and had a significantly higher resistance to gaseous difussion. In both nest types there was a decline in PO2 and an increase in PCO2 over incubation, with greater extreme reached in the marl nests. In sand/shell nests, eggs lost 15% of initial wet weight over incubation. It is suggested that the crocodile embryo adapts to the characteristics of the different substrates by matching its metabolic rate to the gaseous environment of the nest. Important similarities in bird and crocodilian egg development suggests that the birds have been highly conservative in this feature of their biology. |
Palavras-Chave: |
American crocodile; Nest environment; Reptile. |
Thesagro: |
Crocodilo; Meio Ambiente; Ninho; Réptil. |
Thesaurus Nal: |
Crocodylus acutus. |
Categoria do assunto: |
-- |
Marc: |
LEADER 01728naa a2200229 a 4500 001 1793616 005 1999-02-23 008 1984 bl --- 0-- u #d 100 1 $aLUTZ, P. L. 245 $aThe nest environment of the American crocodile (Crocodylus acutus). 260 $c1984 520 $aIn the southern tip of the Everglades, Florida, a small population of the American crocodile, Crocodylus acutus builds nests in two quite different substrates, sand/shell and marl. Changes in temperature, soil water and gaseous composition were monitored in selected nets throughout incubation, and the gaseous resistance of the soil measured. Temperatures increased from approximately 30 C to a maximum of 34 C over incubation and no differences were found between the two nest types. The marl nests had a higher water content than the sand/shell nests and had a significantly higher resistance to gaseous difussion. In both nest types there was a decline in PO2 and an increase in PCO2 over incubation, with greater extreme reached in the marl nests. In sand/shell nests, eggs lost 15% of initial wet weight over incubation. It is suggested that the crocodile embryo adapts to the characteristics of the different substrates by matching its metabolic rate to the gaseous environment of the nest. Important similarities in bird and crocodilian egg development suggests that the birds have been highly conservative in this feature of their biology. 650 $aCrocodylus acutus 650 $aCrocodilo 650 $aMeio Ambiente 650 $aNinho 650 $aRéptil 653 $aAmerican crocodile 653 $aNest environment 653 $aReptile 700 1 $aDUNBAR-COOPER, A. 773 $tCopeia$gn.1, p.153-161, 1984.
Download
Esconder MarcMostrar Marc Completo |
Registro original: |
Embrapa Pantanal (CPAP) |
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
Registros recuperados : 2 | |
1. | | COSTA, A. G. F.; SILVA, A. F. da; KARAM, D.; ADEGAS, F. S.; SILVA, W. T. da; PERINA, F.; CARDOSO, G. D.; TERRA, M. A.; VALE, L. S. do; MELO, N. M. da C. Levantamento da percepção de plantas daninhas resistentes ao glyphosate nos Estados de Mato Grosso, Maranhão, Tocantins, Piauí e Bahia. In: CONGRESSO BRASILEIRO DE ALGODÃO, 11., 2017, Maceió. Inovação e rentabilidade da cotonicultura: livro de resumos. Brasília, DF: Associação Brasileira dos Produtores de Algodão, 2017.Tipo: Resumo em Anais de Congresso |
Biblioteca(s): Embrapa Milho e Sorgo. |
| |
2. | | COSTA, A. G. F.; SILVA, A. F. da; KARAM, D.; ADEGAS, F. S.; SILVA, W. T. da; PERINA, F. J.; CARDOSO, G. D.; TERRA, M. A.; VALE, L. S. do; MELO, N. M. da C. Levantamento da percepção de plantas daninhas resistentes ao Glyphosate nos estados de Mato Grosso, Maranhão, Tocantis, Piauí e Bahia. In: CONGRESSO BRASILEIRO DO ALGODÃO, 11., 2017, Maceió. Resumos... Inovação e rentabilidade na cotonicultura: resumos... Brasília, DF: Associação Brasileira dos Produtores de Algodão - Abrapa, 2017.Tipo: Resumo em Anais de Congresso |
Biblioteca(s): Embrapa Algodão. |
| |
Registros recuperados : 2 | |
|
Expressão de busca inválida. Verifique!!! |
|
|