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Monodon Baculovirus (MBV) and Hepatopancreatic Parvovirus (HPV)

MBV Unassigned sp. from Family Baculoviridae. Spherical occlusion body, singly enveloped, rod shaped virions, ~ 75x 300nm, dsDNA. Affected countries: Indo-Pacific only, SE Asia, E Asia, E Africa, Australia, India HPV Family Parvoviridae, subfamily Densovirinae. Virions measure 22nm, icosahedral virion, ssDNA. Affected countries: Asia, East Africa, Madagascar, Middle East, Indo-pacific, Australia, Brazil and Pacific Coast Americas

MBV - High mortalities in Peneas monodon, 90% mortality in severe infections of larval stages. Gross symptoms - Low HP lipid, Midgut whitish in appearance HPV - Disease with mortalities rare but has been observed in PL’s, small juveniles and adults, causes growth suppression. Significant mortalities have been documented in L. vannamei adults. HPV can infect P.monodon, P.esculentus, P.semisulcatus, Fe. Mergiensis, Fe. Indicus, Fe. Chinensis, Fe. Penicillatus, L. vannamei and L. stylorostris.

MBV - Intranuclear eosinophillic spherical occlusion bodies in epithelial cells of hepatopancreatic tubules. HPV - Characteristic basophilic intranuclear inclusion bodies within tubule epithelial cells of the hepatopancreas. Prominent nucleolar cap on inclusion body

University of Arizona

Tucson, Arizona

USA