39 Bir et al. International Journal of Microbiology and Mycology | IJMM | pISSN: 2309-4796 http://www.innspub.net Vol. 6, No. 1, p. 39-48, 2017 A critical review on White Spot Syndrome Virus (WSSV): A potential threat to shrimp farming in Bangladesh and some Asian countries Joyanta Bir *1 , Pallabi Howlader 1 , Sunuram Ray 2 , Shamima Sultana 1 , S. M. Ibrahim Khalil 3 , Ghausiatur Reza Banu 1 1 Fisheries and Marine Resource Technology Discipline, Khulna University, Khulna, Bangladesh 2 Centre for Integrated Studies on the Sundarbans, Khulna University, Khulna, Bangladesh 3 Department of Fish Health Management, Sylhet Agricultural University, Sylhet, Bangladesh Keywords: PCR, DNA, Crustacean, Aquaculture, Pathogen etc Publication date: July 30, 2017 Abstract WSSV is one of the alarming pathogen all over the world especially for the tropical countries. It causes huge economic loss through rapid mortality of crustacean and some of important mollusks species. Immediately after occurrence in 1992, this disease continuously depletes the world aquaculture production. It is more severe in Asian country and high prevalence in winter sometime after heavy rainfall. Morphologically WSSV consists with a double strand DNA with a 6-7 nm thick envelope, a nucleocaspid and proteins. The nested PCR is the most reliable technique to detect WSSV DNA from shrimp products. Farmer should be given additional concern to prevent the outbreak this virulence virus. Therefore the current study aim is to focus on some biological and economical aspects of WSSV pathogen. This will be an useful reviews article for the aquaculture science. * Corresponding Author: Joyanta Bir  joy.fmrt@gmail.com Open Access REVIREW PAPER