Artigo

Composition of shrimp populations (Crustacea: Decapoda) in non-vegetated areas of two river islands in a Brazilian Amazon estuary

This study investigates the shrimp found in non-vegetated areas of an estuary of the Amazon River. We ascertained the input of juveniles, species' biometrics and the influence of environmental factors on the abundance of species. The samples were collected monthly, from August 2006 to July 2007, in...

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Autor principal: NÓBREGA, Priscila Sousa Vilela da
Outros Autores: SILVA, Bianca Bentes da, MARTINELLI-LEMOS, Jussara Moretto
Grau: Artigo
Idioma: eng
Publicado em: Universidade Federal do Pará 2019
Assuntos:
Ecologia
Palaemonidae
Penaeidae
CNPQ::CIENCIAS BIOLOGICAS::ZOOLOGIA
Acesso em linha: http://repositorio.ufpa.br/jspui/handle/2011/10919
http://dx.doi.org/10.1590/S1984-46702013005000004
id ir-2011-10919
recordtype dspace
spelling ir-2011-109192019-09-23T15:57:28Z Composition of shrimp populations (Crustacea: Decapoda) in non-vegetated areas of two river islands in a Brazilian Amazon estuary NÓBREGA, Priscila Sousa Vilela da SILVA, Bianca Bentes da MARTINELLI-LEMOS, Jussara Moretto Ecologia Palaemonidae Penaeidae CNPQ::CIENCIAS BIOLOGICAS::ZOOLOGIA This study investigates the shrimp found in non-vegetated areas of an estuary of the Amazon River. We ascertained the input of juveniles, species' biometrics and the influence of environmental factors on the abundance of species. The samples were collected monthly, from August 2006 to July 2007, in two places in the estuary, each next to an island. For collecting, we used a manual trawl to perform three hauls per month, totaling 36 samples per site. The abundance of shrimps was estimated as a function of the density of specimens per unit area. We used the Spearman's correlation to test the hypothesis that there is significant correlation between the average of the environmental variables measured and variations in shrimp density. The Kruskal-Wallis and the Mann-Whitney tests showed that there were significant differences in environment factors (temperature and salinity) among the months and sites. We obtained 6,091 shrimps, from which 5,231 (85.88%) were caught off the Arapiranga Island and 860 (14.12%) off the Mosqueiro Island, Palaemonidae and Penaeidae were the only families recorded. Five species were collected: Macrobrachium amazonicum (Heller, 1862), Macrobrachium surinamicum Holthuis, 1948, Macrobrachium carcinus (Linnaeus, 1758), Macrobrachium rosenbergii (De Man, 1879), and Farfantepenaeus subtilis (Pérez-Farfante, 1967). The latter (pink shrimp) was found for the first time in oligohaline environments (0-8). Macrobrachium amazonicum was the most abundant species. The recruitment of M. amazonicum juveniles was continuous throughout the year. The population of M. surinamicum was composed by juveniles and adults and that of F. subtilis exclusively by juveniles. The environmental factors analyzed were variable throughout the year and seem to explain the patterns of shrimp species occurrence in the region, the variation in their abundance and juvenile recruitment. UFPA - Universidade Federal do Pará 2019-04-08T21:27:42Z 2019-04-08T21:27:42Z 2013-12 Artigo de Periódico NOBREGA, Priscila Sousa Vilela da; BENTES, Bianca; MARTINELLI-LEMOS, Jussara Moretto. Composition of shrimp populations (Crustacea: Decapoda) in non-vegetated areas of two river islands in a Brazilian Amazon estuary. Zoologia (Curitiba), Curitiba, v. 30, n. 6, p. 652-660, dez. 2013. Disponível em: http://repositorio.ufpa.br/jspui/handle/2011/10919. Acesso em:. 1984-4670 http://repositorio.ufpa.br/jspui/handle/2011/10919 http://dx.doi.org/10.1590/S1984-46702013005000004 eng Zoologia (Curitiba) Acesso Aberto application/pdf Universidade Federal do Pará Brasil UFPA http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702013000600010&lng=pt&nrm=iso
institution Repositório Institucional - Universidade Federal do Pará
collection RI-UFPA
language eng
topic Ecologia
Palaemonidae
Penaeidae
CNPQ::CIENCIAS BIOLOGICAS::ZOOLOGIA
spellingShingle Ecologia
Palaemonidae
Penaeidae
CNPQ::CIENCIAS BIOLOGICAS::ZOOLOGIA
NÓBREGA, Priscila Sousa Vilela da
Composition of shrimp populations (Crustacea: Decapoda) in non-vegetated areas of two river islands in a Brazilian Amazon estuary
topic_facet Ecologia
Palaemonidae
Penaeidae
CNPQ::CIENCIAS BIOLOGICAS::ZOOLOGIA
description This study investigates the shrimp found in non-vegetated areas of an estuary of the Amazon River. We ascertained the input of juveniles, species' biometrics and the influence of environmental factors on the abundance of species. The samples were collected monthly, from August 2006 to July 2007, in two places in the estuary, each next to an island. For collecting, we used a manual trawl to perform three hauls per month, totaling 36 samples per site. The abundance of shrimps was estimated as a function of the density of specimens per unit area. We used the Spearman's correlation to test the hypothesis that there is significant correlation between the average of the environmental variables measured and variations in shrimp density. The Kruskal-Wallis and the Mann-Whitney tests showed that there were significant differences in environment factors (temperature and salinity) among the months and sites. We obtained 6,091 shrimps, from which 5,231 (85.88%) were caught off the Arapiranga Island and 860 (14.12%) off the Mosqueiro Island, Palaemonidae and Penaeidae were the only families recorded. Five species were collected: Macrobrachium amazonicum (Heller, 1862), Macrobrachium surinamicum Holthuis, 1948, Macrobrachium carcinus (Linnaeus, 1758), Macrobrachium rosenbergii (De Man, 1879), and Farfantepenaeus subtilis (Pérez-Farfante, 1967). The latter (pink shrimp) was found for the first time in oligohaline environments (0-8). Macrobrachium amazonicum was the most abundant species. The recruitment of M. amazonicum juveniles was continuous throughout the year. The population of M. surinamicum was composed by juveniles and adults and that of F. subtilis exclusively by juveniles. The environmental factors analyzed were variable throughout the year and seem to explain the patterns of shrimp species occurrence in the region, the variation in their abundance and juvenile recruitment.
format Artigo
author NÓBREGA, Priscila Sousa Vilela da
author2 SILVA, Bianca Bentes da
MARTINELLI-LEMOS, Jussara Moretto
author2Str SILVA, Bianca Bentes da
MARTINELLI-LEMOS, Jussara Moretto
title Composition of shrimp populations (Crustacea: Decapoda) in non-vegetated areas of two river islands in a Brazilian Amazon estuary
title_short Composition of shrimp populations (Crustacea: Decapoda) in non-vegetated areas of two river islands in a Brazilian Amazon estuary
title_full Composition of shrimp populations (Crustacea: Decapoda) in non-vegetated areas of two river islands in a Brazilian Amazon estuary
title_fullStr Composition of shrimp populations (Crustacea: Decapoda) in non-vegetated areas of two river islands in a Brazilian Amazon estuary
title_full_unstemmed Composition of shrimp populations (Crustacea: Decapoda) in non-vegetated areas of two river islands in a Brazilian Amazon estuary
title_sort composition of shrimp populations (crustacea: decapoda) in non-vegetated areas of two river islands in a brazilian amazon estuary
publisher Universidade Federal do Pará
publishDate 2019
url http://repositorio.ufpa.br/jspui/handle/2011/10919
http://dx.doi.org/10.1590/S1984-46702013005000004
_version_ 1787149326270595072
score 11.653393

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