东亚小花蝽成虫和卵的耐冷藏性

Effects of Cold Storage on the Adults and Eggs of Orius sauteri

研究了东亚小花蝽成虫和卵在 5℃中的耐冷藏性。冷藏前将小花蝽在两个温度中分别饲养1～ 4d的结果表明 ,1 5℃中饲养的成虫 ,其冷藏寿命显著较 2 5℃中饲养的为长。雌虫冷藏寿命较雄虫为长 ,饲养 4d的雌虫平均冷藏寿命达 98d ,雄虫为 2 8 9d。冷藏 1 3和 2 6d的小花蝽 ,其单雌产卵量 (约 2 7粒 )与未经冷藏的个体没有显著差别。产于黄豆芽上的小花蝽卵较耐冷藏 ,冷藏期 1 9d以内 ,卵孵化率保持 75%以上 ;卵孵化率随着冷藏时间的加长而降低。

The effects of cold storage at 5℃ on adults and eggs of Orius sauteri were studied. Adults previously reared at 15℃ for 4d then cold stored had significant longevity than those reared at 25℃, and the females lived longer (98d) than the males (28.9d). After cold stored for 13 or 26d, O. sauteri laid 27 eggs per female, and showed no significant difference with those not cold stored. The eggs laid in soybean sprouts were suitable for cold storage at 5℃. The hatching rate kept more than 75% within 19d and decreased with the prolonged cold storage period.