Systemic infection of freshwater crayfish Cherax quadricarinatus by hymenostome ciliates of the Tetrahymena pyriformis complex

Edgerton, Brett, O'Donoghue, Peter, Wingfield, Max and Owens, Leigh (1996) Systemic infection of freshwater crayfish Cherax quadricarinatus by hymenostome ciliates of the Tetrahymena pyriformis complex. Diseases of Aquatic Organisms, 27 2: 123-129. doi:10.3354/dao027123

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Author Edgerton, Brett
O'Donoghue, Peter
Wingfield, Max
Owens, Leigh
Title Systemic infection of freshwater crayfish Cherax quadricarinatus by hymenostome ciliates of the Tetrahymena pyriformis complex
Formatted title
Systemic infection of freshwater crayfish Cherax quadricarinatus by hymenostome ciliates of the Tetrahymena pyriformis complex
Journal name Diseases of Aquatic Organisms   Check publisher's open access policy
ISSN 0177-5103
1616-1580
Publication date 1996-11
Sub-type Article (original research)
DOI 10.3354/dao027123
Open Access Status File (Publisher version)
Volume 27
Issue 2
Start page 123
End page 129
Total pages 7
Place of publication Oldendorf, Germany
Publisher Inter-Research
Language eng
Formatted abstract
A survey of cultured freshwater crayfish Cherax quadricarinatus in north Queensland revealed systemic infections by hymenostome ciliates in moribund crayfish from one location. The ciliates were identified following protargol impregnation as belonging to the Tetrahymena pyriformis species complex on the basis of their somatic and oral ciliature and morphometric characteristics. Live ciliates were observed in the haemal sinuses of the gills browsing on tissue fragments. Histological examination revealed the ciliates to have invaded most organs and tissues, causing extensive necrosis particularly in the hepatopancreas and antennal gland. Lipid reserves were not depleted in the hepatopancreas, suggesting the rapid development of acute disease. This is the first record of systemic ciliate infections in freshwater decapods.
Keyword Decapoda
Cherax quadricarinatus
Ciliophora
Tetrahymena pyriformis
Morphology
Histopathology
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Biological Sciences Publications
 
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Citation counts: TR Web of Science Citation Count  Cited 16 times in Thomson Reuters Web of Science Article | Citations
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