Biodiversity of decapod crustaceans in the estuarine floodplain around the city of Belém (Pará) in Brazilian Amazonia
The present study focused on the decapod fauna of the fluvial-estuarine environment of the Guajará Bay, in the Brazilian state of Pará, where specimens were collected monthly from six sites, from May 2006 to April 2007. A total of 6,793 specimens were captured, belonging to 11 species of crab and sh...
| Authors: | , , |
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| Format: | article |
| Status: | Published version |
| Publication Date: | 2012 |
| Country: | Brasil |
| Institution: | Universidade Federal do Pará (UFPA) |
| Repository: | Repositório Institucional da UFPA |
| Language: | English |
| OAI Identifier: | oai:repositorio.ufpa.br:2011/4416 |
| Online Access: | http://repositorio.ufpa.br/jspui/handle/2011/4416 |
| Access Level: | Open access |
| Keyword: | Crustáceo Decápode (Crustáceo) Diversidade Baía do Guajará - PA Ilha de Mosqueiro - PA Ilha de Arapiranga - PA Icoaraci - PA Ilha do Combu - PA Estuários Belém - PA Pará - Estado Amazônia brasileira |
| Summary: | The present study focused on the decapod fauna of the fluvial-estuarine environment of the Guajará Bay, in the Brazilian state of Pará, where specimens were collected monthly from six sites, from May 2006 to April 2007. A total of 6,793 specimens were captured, belonging to 11 species of crab and shrimp: eight palaemonids - Macrobrachium amazonicum (Heller, 1862), Macrobrachium surinamicum Holthuis, 1948, Macrobrachium carcinus (Linnaeus, 1758), Macrobrachium rosenbergii (De Man, 1879), Macrobrachium spp. 1-4 -, one portunid - Callinectes bocourti A. Milne-Edwards, 1879 -, and two trichodactylids - Sylviocarcinus devileii H. Milne-Edwards, 1853 and Sylviocarcinus pictus (Milne-Edwards, 1853). While no significant differences were found in the ecological indices of diversity with respect to season, site, or trap size, a tendency for increased abundance and species richness was found during the dry season (August-November), in particular at some sites, apparently reflecting the influence of the estuary's saline wedge. |
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