Abstract
The present work was conducted to determine the distribution of Loxopagurus loxochelis collected monthly, over a period of one year. in Ubatuba Bay (from September/95 to August/96). A total of 179 specimens were collected (138 males, 30 females and 11 ovigerous females). The greatest depth, predominance of very fine sand and highest mean value of organic matter contents of sediment, in combination with the low temperatures registered in winter (July and August), determined the presence of L. loxochelis in the subarea located at the Ubatuba Bay mouth, exposed to the open sea with high water current energy, important because this position insures that spawned larvae will enter into the oceanic circulation.
Highlights
Studies on the distribution of marine organisms are essential to obtain information about the coastal regions affected by human activity, pollution and water current dynamics
The aim of this study was to analyze the temporal-spatial distribution of L. loxochelis from Ubatuba Bay, northern coast of São Paulo State, Brazil
According to Mantelatto and Fransozo (1999), the results of abiotic factors obtained from Ubatuba Bay were similar to previous results for others bays in this region, such as those reported by Forneris (1969) for Flamengo Bay and by Abreu (1980) and Negreiros-Fransozo et al (1991) for Fortaleza Bay
Summary
Studies on the distribution of marine organisms are essential to obtain information about the coastal regions affected by human activity, pollution and water current dynamics. According to Mantelatto et al (1995), the spatial distribution of marine organisms becomes difficult to understand when the ocean and the complex relationship between abiotic factors are analyzed For this reason, continuous and detailed studies of species with important role on dynamics of small areas such as bay and inlets, may contribute to the understanding of the distribution mechanism in marine complexes (Mantelatto 2000). South America, occurring in Brazil (Bahia to Rio Grande do Sul States), Uruguay and Argentina (Melo 1999). The biology of this species is poorly known. The aim of this study was to analyze the temporal-spatial distribution of L. loxochelis from Ubatuba Bay, northern coast of São Paulo State, Brazil. The correlation between individuals and abiotic factors was calculated to identify the variables that influence the temporal-spatial distribution of L. loxochelis
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