Journal article
Histopathology of oedema in pearl oysters Pinctada maxima
Diseases of Aquatic Organisms, Vol.91(1), pp.67-73
2010
Abstract
In October 2006, severe mortalities (80 to 100%) were reported in pearl oyster Pinctada maxima production farms from Exmouth Gulf, Western Australia. Only P. maxima were affected; other bivalves including black pearl oysters P. margaratifera remained healthy. Initial investigations indicated that the mortality was due to an infectious process, although no disease agent has yet been identified. Gross appearance of affected oysters showed mild oedema, retraction of the mantle, weakness and death. Histology revealed no inflammatory response, but we did observe a subtle lesion involving tissue oedema and oedematous separation of epithelial tissues from underlying stroma. Oedema or a watery appearance is commonly reported in published descriptions of diseased molluscs, yet in many cases the terminology has been poorly characterised. The potential causes of oedema are reviewed; however, the question remains as to what might be the cause of oedema in molluscs that are normally iso-osmotic with seawater and have no power of anisosmotic extracellular osmotic regulation.
Details
- Title
- Histopathology of oedema in pearl oysters Pinctada maxima
- Authors/Creators
- J.B. Jones (Author/Creator)M. Crockford (Author/Creator)J. Creeper (Author/Creator)F. Stephens (Author/Creator)
- Publication Details
- Diseases of Aquatic Organisms, Vol.91(1), pp.67-73
- Publisher
- Inter-Research Science Publishing
- Identifiers
- 991005544321307891
- Copyright
- © 2010 Inter-Research.
- Murdoch Affiliation
- Murdoch University
- Language
- English
- Resource Type
- Journal article
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- Citation topics
- 3 Agriculture, Environment & Ecology
- 3.2 Marine Biology
- 3.2.1002 Bivalve Ecology
- Web Of Science research areas
- Fisheries
- Veterinary Sciences
- ESI research areas
- Plant & Animal Science