瓜叶菊上美洲斑潜蝇的生物学特性及蛹的耐寒性研究

研究结果表明,温室花卉瓜叶菊上饲养的美洲斑潜蝇在15、20、25、30、35℃时全世代的发育历期为47.0、25.0、15.5、12.5、12.0 d;瓜叶菊上美洲斑潜蝇的卵、幼虫、蛹和全世代的发育起点温度为8.5、9.8、10.2、10.4℃,有效积温分别为52.7、75.8、158.5、262.2 d.℃;美洲斑潜蝇在宁夏露地瓜叶菊上一年发生7代,温室中全年发生。温室中美洲斑潜蝇在瓜叶菊、翠菊、黄瓜、豌豆上的发育历期长短顺序为黄瓜〉翠菊〉瓜叶菊〉豌豆,而蛹的羽化率顺序为豌豆〉瓜叶菊〉翠菊〉黄瓜。在10、0、-15、20℃时美洲斑潜蝇蛹存放时间越长,死亡率越高,宁夏露地美洲斑潜蝇不能越冬。

Study on Biological Characteristics and Pupa Cold Tolerance of Liriomyza sativae on Florists cineraria

Liriomyza sativae was raised on Florist cinerarias in greenhouse at 15 ℃,20 ℃,25 ℃,30 ℃ and 35 ℃.Development duration of the entire generation were 47.0 d,25.0 d,15.5 d,12.5 d,12.0 d.The growth beginning temperatures of egg,larva,pupa and entire generation of Liriomyza sativae were 8.5 ℃,9.8 ℃,10.2 ℃ and 10.4 ℃.And the effective accumulated temperatures were 52.7 d·℃,75.8 d·℃,158.5 d·℃ and 262.2 d·℃,respectively.Liriomyza sativae had 7 generations on Florist cinerarias in Ningxia each year.However,it occurred through the whole year in greenhouse.Development duration in greenhouse was cucumber> Callestephus chinensis> Florist cinerarias > pea.But emergence rate order of pupa was pea> Florist cinerarias > Callestephus chinensis > cucumber.At 10 ℃,0 ℃,-15 ℃ and 20 ℃,with the extension of storage time of Liriomyza sativae pupa,the mortality rate became higher.After exposed for 24 hours at-15 ℃,the survival rate was 0.Liriomyza sativae was not able to survive through the winter in Ningxia.