Aquatic Information Center



CTSA# 126

Aquafarmer Information Sheet: 
Prevention of Black Gill Disease in Marine Shrimp

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Recent studies in Guam indicate two types of black gill disease may occur in marine shrimp ponds. The first type occurs during the growout phase of shrimp culture. Fouling organisms, protozoa and bacteria settle on gill surfaces and cause inflammation of tissues, which then turn black. The fouling organisms may become numerous and problematic when shrimp are weak and environmental conditions not good. Gill fouling causes slow growth and lowered survival of shrimp.
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