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Diseases of Aquatic Organisms

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DAO 110:5-23 (2014)  -  DOI:

Contribution to the DAO Special: 'Microcell parasites of molluscs'

Bonamia parasites: a rapidly changing perspective on a genus of important mollusc pathogens

Marc Y. Engelsma1,*, Sarah C. Culloty2, Sharon A. Lynch2, Isabelle Arzul3, Ryan B. Carnegie4

1Central Veterinary Institute of Wageningen UR (CVI), PO Box 65, 8200 AB, Lelystad, The Netherlands
2Aquaculture & Fisheries Development Centre, School of Biological, Earth & Environmental Sciences, University College Cork, Distillery Fields, North Mall, Cork, Ireland
3Ifremer, Laboratory of Genetics and Pathology, Av de Mus de Loup-17390, La Tremblade, France
4Virginia Institute of Marine Science, College of William & Mary, PO Box 1346, Gloucester Point, Virginia 23062, USA
*Corresponding author:

ABSTRACT: Organisms of the genus Bonamia are intracellular protistan parasites of oysters. To date, 4 species have been described (B. ostreae, B. exitiosa, B. perspora and B. roughleyi), although the status of B. roughleyi is controversial. Introduction especially of B. ostreae and B. exitiosa to naïve host populations has been shown to cause mass mortalities in the past and has had a dramatic impact on oyster production. Both B. ostreae and B. exitiosa are pathogens notifiable to the World Organisation for Animal Health (OIE) and the European Union. Effective management of the disease caused by these pathogens is complicated by the extensive nature of the oyster production process and limited options for disease control of the cultured stocks in open water. This review focuses on the recent advances in research on genetic relationships between Bonamia isolates, geographical distribution, susceptible host species, diagnostics, epizootiology, host-parasite interactions, and disease resistance and control of this globally important genus of oyster pathogens.

KEY WORDS: Bonamia ostreae · Bonamia exitiosa · Oyster disease · Phylogenetics · Geographical spread · Diagnostics · Epizootiology · Host-parasite interaction · Bonamiosis

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Cite this article as: Engelsma MY, Culloty SC, Lynch SA, Arzul I, Carnegie RB (2014) Bonamia parasites: a rapidly changing perspective on a genus of important mollusc pathogens. Dis Aquat Org 110:5-23.

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