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利用含不同染色剂的人工饲料饲喂棉铃虫幼虫 [H elicoverpa armigera ( Hübner) ],由于幼虫有各种体色 ,不能获得满意的标记效果。以含有不同浓度罗丹明 B的 1 0 %蔗糖溶液饲喂成虫 ,标记率可达 95.1 9%,标记液对成虫寿命和飞行能力没有影响。随着罗丹明 B浓度的增加 ,雌虫卵巢染色的百分率不断提高 ,但产卵前期延迟 ,平均产卵量明显减少。标记雌虫可以产下红色的卵。在河南省新野县 ( 38× 2 5) km2 范围内进行的棉田标放回收结果表明 ,收到的自然种群标记蛾 61 .54%在 1 km,38.46%在 1 0～ 30 km,说明棉铃虫具有很强的运动性 ,也证明了标放回收技术是成功的。
Feeding Helicoverpa armigera (Hübner) larvae with artificial colors containing different stains resulted in no satisfactory marking due to larvae ’s various body colors. Adult adults were fed with 10% sucrose solution containing different concentrations of rhodamine B with a labeling rate of 95.1%. The labeling solution had no effect on the longevity and flight ability of adults. With the increase of rhodamine B concentration, the percentage of female ovary staining increased continuously, but the pre-oviposition delay and the average fecundity decreased significantly. Marked females can produce red eggs. The results of standard-placed cotton fields in Xinye County, Henan Province (38 × 25 km2) showed that 61.44% of the natural populations received were 1 km and 38.46% were between 10 and 30 km, indicating that the bollworm Has a strong sport, but also proved that the standard release recovery technology is successful.