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Revista Brasileira de Parasitologia Veterinária

On-line version ISSN 1984-2961


PENA-REHBEIN, Patricio; RIOS-ESCALANTE, Patricio De los; CASTRO, Raúl  and  NAVARRETE, Carolina. Use of a negative binomial distribution to describe the presence of Sphyrion laevigatum in Genypterus blacodes. Rev. Bras. Parasitol. Vet. [online]. 2013, vol.22, n.4, pp.602-604. ISSN 1984-2961.

This paper describes the frequency and number of Sphyrion laevigatum in the skin of Genypterus blacodes, an important economic resource in Chile. The analysis of a spatial distribution model indicated that the parasites tended to cluster. Variations in the number of parasites per host could be described by a negative binomial distribution. The maximum number of parasites observed per host was two.

Keywords : Sphyrion laevigatum; Genypterus blacodes; negative binomial distribution.

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