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lnternal morphology and histology of the fish mite Lardoglyphus konoi (Sasa and Asanuma) (Acarina: Acaridiae). l. Digestive system

Vijayambika, V. and John, P.A.

1974 - Volume: 16 Issue: 4 pages: 709-718


Acari Lardoglyphus konoi Digestive system Histology Morphology


The internal morphology and histology of the adult digestive system of Lardoglyphits konoi an Acaridiae, are described from serial paraffin sections. The alimentary tract has a typical acarid form, with a well developed stomach armed with a pair of caeca, a distinct colon and a rectum. At least three types ie., fiat squamous and unspecialised, tall columnar, and globular cells are present on the walls of the caeca and the stomach. The tall columnar cells are confined to the anterior dorsal wall of the stomach and the anterior two third of the caeca. They contain characteristic spherules which are probably excretory in nature. The globular cells are confined to the hind third of the caeca. The wall of the colon is made mostly of unspecialised cells. The rectal epithelium contains elongated and wedgeshaped cells which give evidences of secretory fonction. A pair of salivary glands are present but malpighian tubules are not discernible. Differences with the histology of other Acaridiae, mainly the acarids are pointed out.

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1974 Vijayambika, V. and John, P.A.
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