Views of fishermen and aquaculture authorities on the stocking of tilapia and carp species in the dry zone reservoirs, sri lanka

Abstract

A survey was conducted to find out the views of the fishermen and aquaculture authorities on the introduction of Tilapia or Carp species in the fresh water bodies in the Dry Zone of Sri Lanka. This survey explored the factors affecting the choice of either one of the two fish species for inland aquaculture using data collected from the regional aquaculture extension officers and inland fishermen by means of a structured questionnaire. Binary logistic regression was used to analyze the factors affecting the choice of Tilapia vs. Carp by fishermen and the authorities. A correlation analysis demonstrated strong (r≥0.8) positive and significant (p<0.05) correlations between preference for Tilapia by fishermen and market demand (r=0.8), size compatibility (r=0.9) and consumer preference (r=0.8). Correlations were insignificant with fishing effort and income. Market demand, size compatibility and consumer preference are crucial factors in the preference of fishermen for Tilapia over Carp. The same view was expressed by the regional fisheries authorities as well. A revision of the present contradicting stocking policy could therefore, generate more social and economic benefits