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Memórias do Instituto Oswaldo Cruz
Fundação Oswaldo Cruz, Fiocruz
ISSN: 1678-8060
EISSN: 1678-8060
Vol. 93, No. 2, 1998, pp. 277-282
Bioline Code: oc98053
Full paper language: English
Document type: Research Article
Document available free of charge

Memórias do Instituto Oswaldo Cruz, Vol. 93, No. 2, 1998, pp. 277-282

 en The ultrastructure of the gastrodermis and the nutrition of the gill parasitic Atriaster heterodus Lebedev and Paruchin, 1969 (Platyhelminthes: Monogenea)
Claudia P Santos; Thais Souto-Padron & Reinalda M Lanfredi


The gastrodermis of Atriaster heterodus Lebedev & Paruchin, 1969
(Polyopisthocotylea), a gill parasite from Diplodus argenteus
(Valenciennes, 1830), is composed of "U"-shape hematin cells and a
connecting syncytium, both having cytoplasmic lamellae. These cells show
outgrowths and bent folds which were seen to enclose lumen material. The
trapped material was then subjected to endocytosis. The nature of ingested
food material was comparatively analyzed by cytochemical and histochemical
tests. Blood residues were detected in the gut but tests for mucins were
negative. No intact erythrocytes were observed in the gut lumen.

Atriaster heterodus - Diplodus argenteus - Monogenea - fish - Brazil - nutrition

© Copyright 1998 Fundacao Oswaldo Cruz - Fiocruz
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