Spatial distribution of the amazon river prawn Macrobrachium Amazonicum (Heller, 1862) (Decapoda, Caridea, Palaemonidae) in two perennial creeks of an estuary on the northern coast of Brazil (Guajará Bay, Belém, Pará)

Brazilian Journal of Biology

Bs. Bentes¹  Jm. Martinelli¹  Ls. Souza¹  Dv. Cavalcante¹  Mc. Almeida¹  Vj. Isaac¹ 

[1] ,Universidade Federal do Pará Instituto de Estudos Costeiros Bragança Pará ,Brazil

关键词: creek;    Macrobrachium;    Amazon River prawn;    estuary;    canais de maré;    Macrobrachium;    camarão-da-amazônia;    estuário;   

DOI  :  10.1590/S1519-69842011000500013

来源: SciELO

【 摘 要 】

Macrobrachium amazonicum is the most frequently consumed freshwater crustacean by river communities of the Amazon. Despite its relative abundance and vast knowledge on the species from data on cultivated specimens, little is known regarding its biology in the natural environment, especially its use of creeks that are strongly influenced by the tide. Specimens of Macrobrachium amazonicum were collected in September 2006 (dry season) and March 2007 (rainy season) from two perennial creeks of the Guajará Bay in the state of Pará (northern Brazil), using traps similar to the matapis used by local fishermen to identify the spatial distribution of the species. Shrimps of all sizes use the tidal creeks in both seasons, including for breeding purposes. The greatest abundance of the species occurred in headwater areas and in the dry season. It is suggested that abundant allochthonous organic matter and the preference for protected areas may explain the abundance and breeding activity of this species in the headwaters of the creeks.

【 授权许可】

CC BY   
 All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License