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Registro Completo |
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Biblioteca(s): |
Embrapa Amapá. |
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Data corrente: |
22/04/2014 |
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Data da última atualização: |
04/10/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
AMARAL, K. D. S.; VIEIRA, I. M.; OSÓRIO, F. M.; ROCHA, J. D. M.; LIMA, J. de F. |
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Afiliação: |
KARLIA DALLA SANTA AMARAL, CPAF-AP; INÁCIA MARIA VIEIRA, Instituto de Pesquisas Científicas e Tecnológica do Estado do Amapá; FREDERICO MOREIRA OSÓRIO, Instituto Brasileiro do Meio Ambiente e dos Recursos Naturais Renováveis; JOANA D'ARC MAURICIO ROCHA, Universidade do Estado do Amapá; JO DE FARIAS LIMA, CPAF-AP. |
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Título: |
Bioecology of the crab Ucides cordatus (Crustacea, Decapoda) in mangroves influenced by the Amazon River, Brazil. |
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Ano de publicação: |
2014 |
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Fonte/Imprenta: |
Acta Amazonica, Manaus, v. 44, n. 2, p. 213-222, 2014. |
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Idioma: |
Inglês |
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Conteúdo: |
The mangrove crab (Ucides cordatus) is a valuable fishery resource, overfished along the Brazilian coast. This study aimed to obtain bioecological data on this crab along the coast of the State of Amapá. Six bimonthly samplings were conducted between December 2008 and January 2010. Transects were used to estimate the density (burrows m-2) and population abundance (individuals m-2). All the animals were subjected to biometrics, with females being classified according to their stage of gonadal maturation. The mean density (1.09 burrows m-2) and abundance (0.31 individuals m-2) were influenced by the climate with the highest values in summer (1.17 burrows m-2 and 0.34 individuals m-2). The male to female ratio was 1.38:1 showing significant difference in the proportion of sexes. The individuals showed sexual dimorphism, with linear measurements significantly higher in males. The sampled animals also had larger carapace length and width (CL and CW) compared to crabs studied in other Brazilian states. There was a positive relationship between CW and CL and individual weight (IW) and CW for males (R2 = 0.83 and 0.90) and females (R2 = 0.79 and 0.84). The growth was negative allometric (CL increases to a lesser extent than CW) for both sexes. The highest frequency of ovigerous females (78%) and in maturation stage IV (38%) occurred in the CW size class between 59.8 and 67.5 mm. The peak of mature females occurred in May and August, showing a reproductive period different from those in other Brazilian states. MenosThe mangrove crab (Ucides cordatus) is a valuable fishery resource, overfished along the Brazilian coast. This study aimed to obtain bioecological data on this crab along the coast of the State of Amapá. Six bimonthly samplings were conducted between December 2008 and January 2010. Transects were used to estimate the density (burrows m-2) and population abundance (individuals m-2). All the animals were subjected to biometrics, with females being classified according to their stage of gonadal maturation. The mean density (1.09 burrows m-2) and abundance (0.31 individuals m-2) were influenced by the climate with the highest values in summer (1.17 burrows m-2 and 0.34 individuals m-2). The male to female ratio was 1.38:1 showing significant difference in the proportion of sexes. The individuals showed sexual dimorphism, with linear measurements significantly higher in males. The sampled animals also had larger carapace length and width (CL and CW) compared to crabs studied in other Brazilian states. There was a positive relationship between CW and CL and individual weight (IW) and CW for males (R2 = 0.83 and 0.90) and females (R2 = 0.79 and 0.84). The growth was negative allometric (CL increases to a lesser extent than CW) for both sexes. The highest frequency of ovigerous females (78%) and in maturation stage IV (38%) occurred in the CW size class between 59.8 and 67.5 mm. The peak of mature females occurred in May and August, showing a reproductive period differ... Mostrar Tudo |
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Palavras-Chave: |
Amapá; Dinâmica reprodutiva; Estrutura populacional; Fishery resource; Reprodutctive dynamics. |
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Thesagro: |
Crustáceo; Recurso pesqueiro. |
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Thesaurus Nal: |
population structure. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/101298/1/CPAF-AP-2014-Bioecology-of-the-crab.pdf
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Marc: |
LEADER 02352naa a2200265 a 4500
001 1984889
005 2022-10-04
008 2014 bl uuuu u00u1 u #d
100 1 $aAMARAL, K. D. S.
245 $aBioecology of the crab Ucides cordatus (Crustacea, Decapoda) in mangroves influenced by the Amazon River, Brazil.$h[electronic resource]
260 $c2014
520 $aThe mangrove crab (Ucides cordatus) is a valuable fishery resource, overfished along the Brazilian coast. This study aimed to obtain bioecological data on this crab along the coast of the State of Amapá. Six bimonthly samplings were conducted between December 2008 and January 2010. Transects were used to estimate the density (burrows m-2) and population abundance (individuals m-2). All the animals were subjected to biometrics, with females being classified according to their stage of gonadal maturation. The mean density (1.09 burrows m-2) and abundance (0.31 individuals m-2) were influenced by the climate with the highest values in summer (1.17 burrows m-2 and 0.34 individuals m-2). The male to female ratio was 1.38:1 showing significant difference in the proportion of sexes. The individuals showed sexual dimorphism, with linear measurements significantly higher in males. The sampled animals also had larger carapace length and width (CL and CW) compared to crabs studied in other Brazilian states. There was a positive relationship between CW and CL and individual weight (IW) and CW for males (R2 = 0.83 and 0.90) and females (R2 = 0.79 and 0.84). The growth was negative allometric (CL increases to a lesser extent than CW) for both sexes. The highest frequency of ovigerous females (78%) and in maturation stage IV (38%) occurred in the CW size class between 59.8 and 67.5 mm. The peak of mature females occurred in May and August, showing a reproductive period different from those in other Brazilian states.
650 $apopulation structure
650 $aCrustáceo
650 $aRecurso pesqueiro
653 $aAmapá
653 $aDinâmica reprodutiva
653 $aEstrutura populacional
653 $aFishery resource
653 $aReprodutctive dynamics
700 1 $aVIEIRA, I. M.
700 1 $aOSÓRIO, F. M.
700 1 $aROCHA, J. D. M.
700 1 $aLIMA, J. de F.
773 $tActa Amazonica, Manaus$gv. 44, n. 2, p. 213-222, 2014.
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Registro original: |
Embrapa Amapá (CPAF-AP) |
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| 1. |  | AMARAL, K. D. S.; VIEIRA, I. M.; OSÓRIO, F. M.; ROCHA, J. D. M.; LIMA, J. de F. Bioecology of the crab Ucides cordatus (Crustacea, Decapoda) in mangroves influenced by the Amazon River, Brazil. Acta Amazonica, Manaus, v. 44, n. 2, p. 213-222, 2014.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
| Biblioteca(s): Embrapa Amapá. |
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