Length-weight relationship and condition factor of Pacific whiteleg shrimp (Litopenaeus vannamei, Boone, 1931) cultured in polyethylene lined pond

Abstract

Pacific whiteleg shrimp Litopenaeus vannamei (Boone, 1931) cultured worldwide with developments and revolutions in culture ponds like spread polyethylene liner over earthen ponds. The length-weight relationships in shrimp, Litopenaeus vannamei was evaluated cultured in polyethylene (PE) lined ponds from Bhimpore village of Surat district (Gujarat). For this purpose, 500 specimens from pond were collected during 2021 and their length and weight were recorded as per the standard methods. The length and weight were noted 11.488-15.581 (13.393±0.035) cm and 12.26-31.22 (19.613±0.162) gm during study. The noted length frequency distribution for length group A-23, for B-377 and for C-100. The recorded correlation coefficient (r 2 ) of the shrimp were 0.633 (A), 0.780 (B), 0.809 (C) and 0.906 (pooled) noted. The growth constant or regression coefficient (b) was observed 2.541, 2.812, 3.531 and 2.997 for length group A, B, C and pooled population. The growth constant depicted that growth of shrimp was isometric (b=3.0) and normal. A mean Fulton's condition factor value noted 0.808 (±0.002). These findings are clearly indicating that the growth of studied shrimp was normal and good in the polyethylene (PE) lined pond.