Length-weight relationship and condition factor of wild, grow-out and 'loose-shell affected' giant tiger shrimp, Penaeus monodon (Fabricius, 1798) (Decapoda: Penaeidae)

Length-weight relationships and condition factors of wild, cultured, and cultured loose-shell affected Penaeus monodon (2,609 specimens total) were studied from March to August 2007. The regression equation for healthy cultured shrimps was log W = -1.811 +2.721 log L (r(2) = 0.71); log W = -1.444 +2.485 log L (r(2) = 0.91) for wild shrimps; and log W = -1.112 +2.237 log L (r(2) = 0.92) for loose-shell affected shrimps. All shrimps showed negative allometric growth, although ANCOVA indicated significant differences (P < 0.05) among them. This study presents the first known reference dealing with LWRs and condition factors of cultured, wild and loose-shell affected P. monodon.