期刊
LATIN AMERICAN JOURNAL OF AQUATIC RESEARCH
卷 44, 期 2, 页码 401-410出版社
UNIV CATOLICA DE VALPARAISO
DOI: 10.3856/vol44-issue2-fulltext-21
关键词
decapod larvae; meroplankton; tidal changes; neotropical estuary; northeastern Brazil
Composition changes of decapod larvae in a neotropical estuarine inlet (Catuama inlet, northeast Brazilian coast) were studied in a complete tidal cycle in August 2001. Sampling was performed at three stations at two or three depth levels that were located along a transect across the inlet. The collections were performed in 3 h intervals under a neap tide regime. Samples were taken with a pump and the water was filtered through 300 mu m plankton net. 27 planktonic decapod taxa were identified, which included the first larval stages of the coastal and oceanic shrimps Lucifer faxoni and Acetes americanus, besides larvae of the estuarine and coastal decapods Pinnixa spp., Uca spp., Petrolisthes armatus, Upogebia spp. and Alpheidae, which were the most frequent taxa. All of the planktonic larval stages were observed for most of the decapods, suggesting that the probable exportation from the estuary is to the inner adjacent shelf area, instead of the outer oceanic area.
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