夾竹桃紅顏料對瓜實蠅 Bactrocera cucurbitae (Coquillett) (雙翅目：果實蠅科)之毒效評估

Abstract

將不同濃度之夾竹桃紅顏料(Phloxine B)加入成蟲飼料（酵母抽出物：糖＝1:3）中供瓜實蠅取食後測試其對瓜實蠅之毒效。試驗結果Phloxine毒效隨著濃度和光照強度的提高而增加。 Various concentrations of Phloxine B were added into the artificial diets (yeast: sugar=1: 3) and fed to adult melon flies, Bactrocera cucurbitae (Coquillett), to determine the toxic effects of Phloxine B to the flies. Tests were carried out in the dark as well as under the photoperiod of 12: 12 (L: D) hr with different intensity of lights to evaluate the influence of light and its intensity on Phloxine B toxicity. Phloxine B elicited toxicity to melon flies and the toxic effects increased with Phloxine B concentration and light intensity.