Abundância das larvas de Porcellanidae (Decapoda, Anomura) no meroplâncton do estuário do Rio Caeté, estuário amazônico brasileiro

Authors

  • Antonio Sérgio Silva de Carvalho Universidade do Estado do Pará, Centro de Ciências Sociais e Educação, Departamento de Ciências Naturais (DCNA). Rodovia PA 125, s/n Bairro Angelin 68625-000 - Paragominas, PA - Brasil
  • Andréia Barbosa das Nevis Universidade Federal do Pará Instituto de Ciências Biológicas Faculdade de Ciências Biológicas Av. Augusto Corrêa, 01 66075-110 Belém-PA
  • Danielly Brito de Oliveira Universidade Federal do Pará Instituto de Ciências Biológicas Faculdade de Ciências Biológicas Av. Augusto Corrêa, 01 66075-110 Belém-PA
  • Jussara Moretto Martinelli-Lemos Universidade Federal do Pará Instituto de Ciências Biológicas Faculdade de Ciências Biológicas Av. Augusto Corrêa, 01 66075-110 Belém-PA

DOI:

https://doi.org/10.14210/bjast.v17n2.p7-15

Abstract

The porcelain crabs (Infraorder Anomura) occurs in great abundances between boulders in the intertidal zone of Pará coast, Amazon estuarine region, Brazil. The life cycle of this species includes only two zoeal stages, which are distinctive by their very elongate rostral and posterolateral carapace spines, and are commonly found in estuarine meroplanktonic samples. The present study provides information about the abundance of porcellanid larvae at an estuarine system in the Amazon coastal zone, aiming to understand their distribution in relation to some physicochemical variables: seasonal, diel, tidal and lunar cycles, temperature and salinity. Zooplankton samples were collected monthly from April 2000 to April 2001 with a conical net with 300 μm of mesh size, by horizontal hauls, in the Caeté River estuary, Pará, Brazil. Only zoeal stages of porcellanid larvae were found. In general, their abundance was greater in dry season in relation to rainy season, and flood tide in relation to ebb tide. Greater densities were also registered at higher degrees of salinity. The other variables, moon phases, diel cycle and temperature, had not a significant influence on porcellanid larval abundance in the Caeté River estuary.

Author Biography

Jussara Moretto Martinelli-Lemos, Universidade Federal do Pará Instituto de Ciências Biológicas Faculdade de Ciências Biológicas Av. Augusto Corrêa, 01 66075-110 Belém-PA

Possui graduação em Ciências Biológicas pela Universidade de São Paulo (1995), mestrado em Ciências Biológicas (Zoologia) pela Universidade Estadual Paulista Júlio de Mesquita Filho (1998) e doutorado em Ciências Biológicas pela Universidade Federal do Pará (2005). Atualmente é professora adjunta III e pesquisadora da Universidade Federal do Pará. Tem experiência na área de Zoologia, Oceanografia, com ênfase em Biodiversidade e Interação entre os Organismos Marinhos e os Parâmetros Ambientais, Recursos Pesqueiros e Aqüicultura, atuando principalmente em estudos envolvendo o táxon Crustacea, principalmente os Decapoda (camarões, siris, ermitões, porcelanídeos e talassinídeos). Atua também no ensino a distância em Ciências Biológicas.

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Published

2014-04-01

Issue

Vol. 17 No. 2 (2013)

Section

Research Articles

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