Virus Year first Recorded Location Shape Size (nm) Genome type Genome size Transmission type Susceptible species
IHHNV 1981 Hawaii, USA Icosaedral 20 – 22 ss DNA 4100 - 4700 nt Horizontal / vertical Litopenaeus stylirostris, L. vannamei, L. occidentalis, vertical Farfantepenaeus californiensis, Fenneropenaeus chinensis, Penaeus monodon, P. semisulcatus, Marsupenaeus japonicus, Artemesia longinaris
TSV 1992 Ecuador Icosaedral 31 – 32 ss (+) RNA 10205 nt Horizontal L. vannamei, L. stylirostris, L. setiferus, P. monodon, Metapenaeus ensis, F. chinensis, L. schmitti
YHV 1990 Thailand Bacilliform 150 – 200 x 40 – 50 ss (+) RNA 26652 nt Horizontal / Vertical P. monodon, P. merguiensis, M. ensis, L. vannamei, L. stylirostris, L. setiferus, F. duorarum, F. aztecus, Palaemon styliferus, Palaemonetes pugio, Acetes sp.
WSSV 1992 Taiwan Bacilliform 210 – 380 x 70 – 67 ds DNA 292 - 307 kbp Horizontal / Vertical Farfantepenaeus aztecus, F. duorarum, L. stylirostris, L. vannamei, L. setiferus, F. chinensis, F. indicus, F. Marsupenaeus japonicus, M. ensis, M. dobsonii, M. monoceros, P. monodon, P. penicillatus, P. semisulcatus, Parapenaeopsis stylifera, Solenocera indica, Trachypenaeus curvirostris
Legends: nm - nanometers; nt - nucleotides; ss - single-stranded; ds - double-stranded; (+) positive strand; kbp - kilo base pairs
Table 1: Features of the four main viral pathogens in shrimp aquaculture.
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