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Studies on chaetognaths off Ubatuba region, Brazil: I. distribution and abundance

DOI: 10.1590/S0373-55241994000100006

Keywords: chaetognatha, distribution, abundance, population structure, ubatuba region, south atlantic.

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Abstract:

the distribution of chaetognath species off ubatuba region, s?o paulo state, brazil, was studied during a program of multidisciplinary research. ten species belonging to the genera sagitta, krohnita and pterosagitta were identified. s. enflata was the dominant species followed by s.friderici and s. hispida. the species s. enflata, s. hispida, s. tenuis, s. bipunctata and jc pacifica were found in the shelf water whereas s. serratodentata, s. minima, s. hexaptera and p. draco in the tropical water. only s. friderici was found associated to coastal water. hydrological conditions affected population structure, size of individuals and abundance.

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