Length-weight relationship, condition factor and length-frequency analysis of tiger shrimp (Penaeus monodon fabricius, 1798)

The tiger shrimp Penaeus monodon (Fabricius, 1798) were collected from the Government shrimp farm, Coastal Salt salinity Research Station (CSSRS), Navsari Agricultural University, Navsari, Gujarat, India during the year 2009-2010. The morphometric measurements including length and weight of 321 male, 317 female and 638 pooled population that shows 8.0-19.4 (15.257±0.070) cm, 8.0-18.5 (15.019±0.098) cm and 9.0-19.4 (15.426±0.100) cm range of length with 8.0-52.0 (30.546±.0498), 8.0-58.0 (32.760±0.541) and 8.0-58.0 (31.663±0.369) gm range of weight respectively. The regression coefficient (r2) 0.788, 0.772 & 0.780, intercept (a) -1.451, -1.620 & -1.536 and slope or regression coefficient (b) 2.478, 2.624 & 2.552 was observed for male, female and pooled population samples. The value of regression coefficient (b) was < 3.0 that shows negative allometric growth of studied population. The values of condition factor (K) was 0.537 - 1.646 (0.875±0.009) for male, 0.455 - 1.646 (0.875±0.009) for female and 0.455 - 1.646 (0.876±0.007) for pooled population which revealed that condition of studied shrimp population was almost uniform during the study period.