A Survey of Philippine Tabanidae in North Cotabato, Philippines
Keywords:
Control, Nzi fly trap, surra, Tabanidae, Trypanosoma evansiAbstract
A total of 38,818 tabanids were trapped and identified in five municipalities of North Cotabato using Nzi fly traps from July 2013 to June 2014, namely: Tabanuspartitus (77.04%), T. striatus (11.26%), T.reduscens (5.43%), T. philippinensis (0.22%)and Chrysops (0.12%) and the remaining5.92% were the unidentified tabanids. The species and abundance of tabanid flies were determined in relation to elevation of the area, water source and rainfall pattern. There was a variation in the number of flies trapped between each month and area of collection. The highest number of tabanid flies were trapped in Aleosan (11,349) followed by Mlang (10,733), Kabacan (9,754), Midsayap(4,855) and the least was in Antipas (2,127)all in Cotabato. Results show that the abundance of tabanid flies in the study areas was influenced by the altitude and the presence of water sources. It was found that the higher the elevation or altitude of the study area, the lesser was the number of flies trapped. The highest total rainfall data was recorded in Arakan(2,131.90) to include the municipality of Antipas. However, Antipas had the lowest number of tabanid flies caught. This finding suggests that rainfall concentration was not enough to influence the abundance of tabanid flies in this study. A decrease in tabanid flies trapped per month from July 2013 to June2014 indicates that trapping tabanidae flies, the vector of Trypanosoma evansi (surra)infection, is a potential intervention to control surra disease in livestock.
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