Composição, densidade e variação espaço-temporal de larvas de decápodes e estomatópodes do arquipélago de São Pedro e São Paulo, Brasil / Composition, density and spatial-temporal distribution of decapods and stomatopods larvas of the Saint Pauls archipelago, Brazil

AUTOR(ES)
DATA DE PUBLICAÇÃO

2008

RESUMO

The present study describes the composition, density and the temporal, diel and spatial distribution of decapod and stomatopod larvae present in surface waters of Saint Pauls Rocks. The expeditions to the archipelago were carried out in April, August and November of 2003, March of 2004 and May of 2005. Surface plankton samples were collected during the morning and dusk, inside the bay and in stations 150, 700 and 1500 m away from the archipelago. The identification resulted in 51 decapod and 6 stomatopod larvae. Seven species, eight genera and individuals belonging to the families Oplophoridae, Pandalidae, Scyllaridae and Oplophoridae were identified for the first time in the area. The mean larval density varied from zero to 150,2 ± 69,6 individuals · 100 m-3 in the waters around the archipelago and from 1,7 ± 3,0 to 12.827,1 ± 15.072,9 individuals · 100 m-3 inside the bay. Significant differences in larval density were verified between months and day periods, but not among different distances from the archipelago. The results suggest that the bay and the waters around the archipelago are different in terms of larval composition, density and diversity.

ASSUNTO(S)

composition decapoda meroplankton distribuição arquipélago oceânico meroplâncton composição oceanic archipelago distribution stomatopoda decapoda stomatopoda

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