Diseases and parasites found in marine shrimp (Penaeus monodon and P. merquiensis) of Thailand
1985
Lila Ruangpan | Yajai Jarernvittayakul (Dept. of Fisheries., Bangkok (Thailand). Brackishwater Fisheries Div.) | Yoawanid Danayadol
Results of the studies on diseases and parasites of marine shrimp, Penaeus monodon and P. merguiensis which are considered as the most economically important species for the shrimp farming in Thailand were presented. The most serious case that cause great lose after hatching to nursing period due to ecto-commensals protozoa; Zoothamnium and Epistylis. Vibrio bacteria aud fungus, Lagenidium were considered as the pathogenic microorganisms caused second degree of losess. The other protozoa that cause minor damage are Acineta, Lagenophrys and Licmophora. Diseses and parasites occurred during rearing period included cotton or milkly shrimp diseases caused by Microsporidian protozoa (Thelohania sp.), black gill disease caused by fungus Fusarium. Common parasitic founa in the digestive tract were Thynnascaris sp., Spirocamallanus larvae, tapeworm, Prochristianella penaei and parasitic protozoa Cephalolobus sp., Parasitic copepod, Caligus epidemicus found in our studies was the first known record on an invertebrate host. Prevention and control measures were given accordingly.
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