Detection of Infectious Hypodermal and Hematopoietic Necrosis Virus (IHHNV, Decapod Penstylhamaparvovirus 1) in Commodity Red Claw Crayfish (Cherax quadricarinatus) Imported into South Korea

Freshwater crayfish, which are cultivated in aquaculture, economically important for food and ornamental purposes. However, relatively few studies have focused on potentially pathogenic viruses crayfish compared to penaeid shrimp. Commodity red claw (Cherax quadricarinatus; 400 10 batches) swamp (Procambarus clarkii; 40 2 imported into South Korea from Indonesia China were screened by PCR detect infectious hypodermal hematopoietic necrosis virus (IHHNV or Decapod penstylhamaparvovirus 1). IHHNV was detected tissue samples pooled nine out of ten batches Indonesia. Phylogenetic analysis amplicons representative pools clustered the strain with infectious-type II sequences commonly Southeast Asian countries rather than type III strains previously whiteleg shrimp (Penaeus vannamei) cultured Korea. DNA most frequently muscle (eight batches, 66.7% samples), followed hepatopancreas (five 41.7% samples) gills (three 25.0% samples). These data suggest that could be a potential carrier quarantine procedures must strengthened avoid importing types commodity crustaceans such as crayfish.