Bathymetric distribution of the shrimp Rimapenaeus constrictus (Stimpson, 1874) (Decapoda, Penaeidae) in two locations off the southeastern Brazilian coast

Autor(es)

Nunes Hiroki, Katia Aparecida ^[1] ; Fransozo, Adilson ^[1] ; Costa, Rogerio Caetano ^[1] ; Castilho, Antonio Leao ^[1] ; Shimizu, Roberto Munehisa ^[2] ; Almeida, Ariadine Cristine ^[1] ; Furlan, Michele ^[1]

Afiliação do(s) autor(es)

^[1] Univ Estadual Paulista, Dept Zool, Inst Biociencias, NEBECC, UNESP, BR-18618000 Botucatu, SP - Brazil

^[2] Univ Sao Paulo, Dept Ecol, BR-09500900 Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: MARINE BIOLOGY RESEARCH; v. 7, n. 2, p. 176-185, 2011.
• Citações Web of Science: 12

Resumo

The distribution of benthic organisms is directly or indirectly associated with the physical and chemical properties of the water and sediment. This study analysed the spatial and temporal distribution of Rimapenaeus constrictus in unconsolidated sublittoral sediments of two areas off the northern coast of the state of Sao Paulo, Brazil. We also analysed the association of environmental factors with the occurrence of this species. Shrimp were collected monthly from July 2001 to June 2003, with a fishing boat equipped with two double-rig nets, in the regions of Ubatuba (UBA) and Caraguatatuba (CA). The collections were made during the day, along five transects with mean depths of 5, 10, 15, 20, 25, 30, and 35 m. We obtained a total of 5478 individuals, 3403 (UBA = 2025 and CA = 1378) during the first year, and 2075 (UBA = 875 and CA = 1200) during the second year. Significant differences in abundance were observed in relation to depth, season of the year, and also in the interaction between region and depth. Higher abundances occurred in fall and winter, independently of the sampling year. The largest numbers of shrimp were caught on the 20-m transect in UBA and the 25-m transect in CA. It is concluded that the distribution pattern of this species is closely related to environmental factors, and the temperature of the bottom water and the sediment texture were the most significant variables affecting the distribution. (AU)

• Processo FAPESP: 97/12108-6 - Biologia e distribuição espacial e temporal das espécies de camarões Dendrobranchiata (Crustacea: Decapoda) na região de Ubatuba (SP)
• Beneficiário: Rogério Caetano da Costa
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 97/12106-3 - Biologia e distribuição espacial e temporal dos caranguejos (Crustacea: Decapoda: Brachyura) do substrato não-consolidado, na região de Ubatuba (SP)
• Beneficiário: Giovana Bertini
• Modalidade de apoio: Bolsas no Brasil - Doutorado