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Title: Ultrastructural data on the life cycle of the parasite, Perkinsus atlanticus (Apicomplexa), on the clam, Ruditapes phillipinarum, in the Mediterranean
Author: Sagristà i Mateo, Elena
Durfort i Coll, Mercè
Azevedo, Carlos
Keywords: Protozous patògens
Ebre, Delta de l' (Catalunya)
Pathogenic protozoa
Ebro River Delta (Catalonia)
Issue Date: 1996
Publisher: Consejo Superior de Investigaciones Científicas (CSIC)
Abstract: An Apicomplexan Perkinsus species has been found parasitizing the clam Ruditapes philippinarum (= Tapes semidecussatus) collected on the Mediterranean coast in the region of the Ebro Delta (Tarragona, Spain). Light and transmission electron microscopy were used to study different stages of this parasite during zoosporulation induced by incubation in thioglycollate medium and seawater. During incubation the trophozoites began zoosporulation, which originated prezoosporangia and zoosporangia at different developmental stages. Successive cytokinesis and nucleokinesis gave rise to prezoospores, which became elongate and differentiated in biflagellated zoospores. The latter presented large mitochondria and an apical complex formed by a conoid, polar ring, micronemes, rhophtries and subpellicular microtubules. The zoosporangium wall showed some typical lamosomes and a discharge tube developed in early phases of incubation. Ultrastructural data were compared with the only four species of the genus Perkinsus previously described. The morphological data, the host and the geographic proximity suggest that the species located on the Mediterranean coast was Perkinsus atlanticus.
Note: Reproducció del document publicat a:
It is part of: Scientia Marina, 1996, vol. 60, num. 2-3, p. 283-288
ISSN: 0214-8358
Appears in Collections:Articles publicats en revistes (Biologia Cel·lular, Fisiologia i Immunologia)

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