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- Title
Skeletal myopathy in juvenile barramundi,Lates calcarifer(Bloch), cultured in potassium-deficient saline groundwater.
- Authors
Partridge, G. J.; Creeper, J.
- Abstract
Saline groundwater is being pumped from a number of locations in rural Western Australia to prevent secondary salinity impacting farmland, rural infrastructure and areas with high conservation value. Aquaculture may offset the costs of groundwater pumping, and the suitability of groundwater for finfish aquaculture is being assessed through bioassays. There are marked spatial variations in the ionic composition of saline ground water in Western Australia and this paper describes two bioassays investigating a saline, potassium-deficient water source that resulted in mortalities in juvenile barramundi,Lates calcarifer(Bloch). Histopathological examination revealed severe degeneration and necrosis of skeletal muscles, marked hyperplasia of branchial chloride cells and renal tubular necrosis. Clinical chemistry findings included hypernatraemia and hyperchloridaemia of the blood plasma and lowered muscle potassium levels. It is concluded that the principal cause of death was skeletal myopathy induced by low water potassium levels.
- Subjects
AUSTRALIA; GIANT perch; MUSCLE diseases; POTASSIUM deficiency diseases; SALINE waters; CHLORIDE cells; FISH anatomy; AQUACULTURE
- Publication
Journal of Fish Diseases, 2004, Vol 27, Issue 9, p523
- ISSN
0140-7775
- Publication type
Article
- DOI
10.1111/j.1365-2761.2004.00567.x