EFFECT OF ADDITION OF RED TILAPIA Oreochromis spp ON GROWTH PERFORMANCE AND SURVIVAL OF WHITE SHRIMP Litopenaeus vannamei CHALLENGED WITH Vibrio parahaemolyticus STRAIN AHPND+ BY BIOASSAY  

Aquaculture is the worldwide agro-industrial activity with the largest growth rate. However, shrimp aquaculture has been devastated in many countries due to decreasing yields resulting from bacterial diseases, poor management such as overstocking and environmental degradation (Fitzsimmons, 2001). Thus, Acute hepatopancreatic necrosis disease syndrome (AHPND), often known as shrimp early mortality syndrome (EMS), has recently caused serious problems in the shrimp culture industry (Kongrueng et al. 2015). The causal agent of AHPND has been demonstrated to be Vibrio parahaemolyticus (Tran et al. 2013). Because this, polyculture of shrimp with tilapias may provide an opportunity to minimize bacterial disease such as AHPND. The aim of this study was to evaluate the effect of addition of red tilapia (Oreochromis spp.) on growth performance and survival of white shrimp (Litopenaeus vannamei) challenged with Vibrio parahaemolyticus strain (AHPND/EMS+) under experimental conditions.

The results in Table 1, shows that all treatments evaluated with tilapia in cage (T1) and tilapia no cage (T2 and T3), showed similar behavior of cumulative mortality except monoculture shrimp (T4), that showed a cumulative mortality of 70% only at the end of 48 h post-challenge.

Rererences

Fitzsimmons, K. 2001. "Polyculture of tilapia and penaeid shrimp". Global Aquaculture Advocate, 4(3): 43-44.

Kongrueng, J., Yingkajorn, M., Bunpa, S., Sermwittayawong, N., Singkhamanan, K. and Vuddhakul, V. (2015), Characterization of Vibrio parahaemolyticus causing acute hepatopancreatic necrosis disease in southern Thailand. Journal of Fish Diseases, 38: 957-966