Please use this identifier to cite or link to this item: http://repositorio.ufpa.br/jspui/handle/2011/7027
metadata.dc.type: Artigo de Periódico
Issue Date: Jun-2014
metadata.dc.creator: NÓBREGA, Priscila Sousa Vilela da
SILVA, Bianca Bentes da
MARTINELLI-LEMOS, Jussara Moretto
Title: Population structure and relative growth of the Amazon shrimp Macrobrachium amazonicum (Heller, 1862) (Decapoda: Palaemonidae) on two islands in the fluvial-estuarine plain of the Brazilian Amazon
Citation: NÓBREGA, Priscila Sousa Vilela da; SILVA, Bianca Bentes da; MARTINELLI-LEMOS, Jussara Moretto. Population structure and relative growth of the Amazon shrimp Macrobrachium amazonicum (Heller, 1862) (Decapoda: Palaemonidae) on two islands in the fluvial-estuarine plain of the Brazilian Amazon. Nauplius, Cruz das Almas, v. 22, n. 1, p. 13-20, jun. 2014. Disponível em: <http://www.scielo.br/pdf/nau/v22n1/a02v22n1.pdf>. Acesso em: 19 nov. 2015. <http://dx.doi.org/10.1590/S0104-64972014000100002>.
Abstract: This study aimed to describe the population structure of the Amazon shrimp Macrobrachium amazonicum, as well as their relative growth between the length of the cephalothorax and the total length, and between the length of the cephalothorax and the total mass of shrimps of a fluvial-estuarine plain in the State of Pará. Shrimps were sampled monthly from August 2006 to July 2007, using trawl nets, taking three replicates at each site (Arapiranga and Mosqueiro) per month, totaling 72 replicates. We caught 5,510 specimens, being 90.90% from Arapiranga Island and 9.1% from Mosqueiro Island. The highest densities occurred in July (1.33 individuals/m2), at the beginning of the dry season and in December (1.66 individuals/m2), at the beginning of the rainy season. The morphometric analysis for separate and grouped sexes resulted in negative and positive allometric growth. Ovigerous females were observed in all months, indicating continuous reproduction and the majority (67.81%) was caught during the less rainy season. The abundance and continuous reproduction of M. amazonicum show that this estuary offers conditions for the proper development of this population.
Keywords: Ecologia aquática
Camarão de água doce
Macrobrachium amazonicum
Amazônia brasileira
ISSN: 0104-6497
metadata.dc.rights: Acesso Aberto
Appears in Collections:Artigos Científicos - ICB

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