Length-weight relationship and condition factor of white leg shrimp Litopenaeus vannamei (Boone, 1931) in culture systems of Choebdeh, West-South of Iran

چکیده مقاله

In present study, 634 individual was investigated. The samples were selected from a cultural farm in Choebdeh fisheries site, close to Abadan city in the west-south of Iran. Weight and length of each sample were measured. The average weight and length of Litopenaeus vannamei were 8.96± 0.15(gr) and 11.82±0.07 (cm), respectively. The specific growth rate per days and condition factor (K) average were measured as 4.90% and 0.56. Length–weight equation was Y = 0.0108 X2.⁶⁹³⁵ with b parameter value of 2.6935 and R² = 0.8895. Therefore, a negative allometry was observed. It seems that, the ecological indices in cultured shrimps provide useful information from cultural condition to the farmers and aquaculture experts. In such a way, even minor fluctuation in feeding amounts, quality or quantity of inflow water and other parameters appear in these indices. The managers could use these indices to assess individual health and habitat conditions and decrease handling.