Preliminary Study On Protein Bait On Bactrocera Dorsalis (Hendel)

In our country, chemical pesticides, adult sex pheromone trapps and biological control are been used to prevent the adult of Bactrocera dorsalis. Decades of experience and practice shows that use of spraying the protein baits is an effective prevention in fruit fly control. Compared to foreign countries, there is a large gap on the baits research. So we chose a kind of protein of life-form from a lot of potential protein agents. Now, we successfully made out a protein bait to the oriental fruit fly.1 Protein material selectionThrough the hydrolysis and attraction experiments on Brewer’s grains, waste yeast and soy protein, the test results show that the female lure rate of three things is 31.7%, 51.7%, 25.0% and the male lure rate of those three things is 23.3%, 28.3%, 18.3%. The yeast protein has more significant than the other two on the control of Bactrocera dorsalis.2 The protein extraction processMany hydrolysis experiments on beer waste yeast show that we must select hydrolysis tempera-ture 45℃, reaction time 44h, hydrolysis pH5.0, solid-liquid ratio of 1:10 as the best preparation of protein method. At this point, the degree of hydrolysis of protein extraction is 11.58%. The lure rate of the female is 53.33%, the lure rate of the male of 56.67%, with an average rate of 55.00%.3 Proteins in the insecticidal material selectionReference to commonly used pesticides of Bactrocera dorsalis, we evaluate the toxicity of imidacloprid, methomyl and spinosad. The experiment results show that the toxicity of imidacloprid is higher than the other two. However, taking the environmental factor into account, spinosad can be used as an ideal pesticide.As the results above mentioned, the hydrolyzed protein for oriental fruit fly has significant attraction activity on local fruir flies, and it is rather significant to the domestic fruit fly prevention and control. On the integrated management of Bactrocera dorsalis, the treatment for the yeast lay a theoretical basis in the development and application of protein bait formulation.