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Population dynamics of Sphaerospora dicentrarchi Sitja-Bobadilla et Alvarez-Pellitero, 1992 and S. testicularis Sitja-Bobadilla et Alvarez-Pellitero, 1990 (Myxosporea: Bivalvulida) infections in wild and cultured Mediterranean sea bass (Dicentrarchus labrax L.)

Published online by Cambridge University Press:  06 April 2009

A. Sitja-Bobadilla  and
P. Alvarez-Pellitero
A. Sitja-Bobadilla
Affiliation:
Instituto de Acuicultura de Torre de la Sal (CSIC), Ribera de Cabanes, 12595 Torre la Sal, Castellon, Spain
P. Alvarez-Pellitero
Affiliation:
Instituto de Acuicultura de Torre de la Sal (CSIC), Ribera de Cabanes, 12595 Torre la Sal, Castellon, Spain
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Summary

The population dynamics of Sphaerospora dicentrarchi and S. testicularis, myxosporean parasites of sea bass (Dicentrarchus labrax), was studied in different groups of cultured and wild fish. S. dicentrarchi prevalence was higher for wild fish (100%) than for cultured ones (70.5%). Infection levels increased with host age and there were no significant sex differences in cultured fish. Among parasitized organs, the gall bladder and intestine registered the highest infection levels in wild and cultured fish. A progressive increase in infection levels of S. testicularis was observed in cultured males during the spawning season in four consecutive periods. The evolution of the percentage of the different parasitic stages is pointed out. The infection seems to be related to water temperature and gonadal maturation.

Keywords

MyxozoaSphaerosporaepidemiologyteleostssea bassfish culture
Type
Research Article
Information
Parasitology , Volume 106 , Issue 1 , January 1993 , pp. 39 - 45
Copyright
Copyright © Cambridge University Press 1993

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References

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