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Idiopathic muscle necrosis in the freshwater prawn, Macrobrachium rosenbergii de Man, cultured in Thailand
Author(s) -
NASH G.,
CHINABUT S.,
LIMSUWAN C.
Publication year - 1987
Publication title -
journal of fish diseases
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.819
H-Index - 85
eISSN - 1365-2761
pISSN - 0140-7775
DOI - 10.1111/j.1365-2761.1987.tb00726.x
Subject(s) - macrobrachium rosenbergii , prawn , necrosis , biology , hatchery , fishery , myofibril , anatomy , fish <actinopterygii> , endocrinology , genetics
. A mass mortality of up to 60% per tank occurred in 28‐day‐old Macrobrachium rosenbergii postlarvae cultured under intensive conditions in a hatchery in Thailand. Grossly affected prawns displayed a diffuse ‘milky’ white body opacity; histologically and ultrastructurally, segmental myofibre (myofibrillar and sarcoplasmic) necrosis unassociated with any infectious agents was observed, and was diagnosed as idiopathic muscle necrosis. Avoidance of overstocking and increased dissolved oxygen in tank water have proved effective in preventing subsequent recurrences of the condition.