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Chlamydia-like organisms in ctenidia and mantle cells of the Japanese oyster Crassostrea ggias from the French Atlantic coast ArchiMer
Renault, Tristan; Cochennec, Nathalie.
Grossly visible lesions of the ctenidia and occasional mortalities in Japanese oyster Crassostrea gigas from the Atlantic French coast were reported in 1992-1993. From August 1992 to March 1993, 235 living oysters were collected to determine the cause of tissue lesions and mortalities. Microscopical examination of fixed, stained sections revealed that 53 2% of these oysters had ctenidia and mantle lesions associated with irregular basophllic and Feulgen positive cytoplasmic inclusion bodies. Ultrastructurally, the infectious agent was a chlamydia-like organism. Indirect fluorescent and peroxidase conjugated antibody tests suggested that this agent might share common antigens with the prokaryotic agent Chlamydia psittaci, strain ovis
Tipo: Text Palavras-chave: Mantle; Ctenidia; Chlamydia like organisms; Pacific oyster; Crassostrea gigas.
Ano: 1995 URL: http://archimer.ifremer.fr/doc/1995/publication-2896.pdf
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The surface morphology of the ctenidia of Spondylus spinosus (Mollusca: Bivalvia) from Antalya Bay, Turkey Rev. Bras. Zool.
Aksit,Deniz; Mutaf,Beria Falakali; Balci,Ahmet.
The surface morphology of the ctenidia of Spondylus spinosus Schreibers, 1793 was studied with light and scanning electron microscopy for comparison with the gill structures of other bivalves. The demibranch of S. spinosus is heterorhabdic, with the principal filaments at the descending lamellae and ordinary filaments at the ascending lamellae. The gill lamellae have a prominent gauze-like structure at their distal part, with numerous groups of eight ordinary filaments. They bear ciliary arrays on their frontal surfaces and ostia at their latero-frontal surfaces. Frequent cirral plates form regular interfilamentary junctions. The description of the gill structure of S. spinosus presented here can be used to derive implications for the correlations among...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ciliary structures; Ctenidia; Morphology; Scanning electron microscopy (SEM); Spiny oyster.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702013000100008
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