亚洲玉米螟的寄主植物种类

为探明亚洲玉米螟Ostrinia furnacalis(Guenée)的寄主植物种类,对13科38种植物进行了田间笼罩接虫试验和室内生物测定,并通过组建实验种群生命表分析了不同寄主植物对亚洲玉米螟生长发育和繁殖的影响。田间试验结果表明,亚洲玉米螟寄主植物有8科20种,酸模叶蓼是最适宜寄主植物,其次为玉米、谷子、薏苡等;在酸模叶蓼、玉米等11种植物上还发现了第2代幼虫。室内试验结果表明,在室内饲养条件下,亚洲玉米螟能在9科25种寄主植物上完成生活史,其中以向日葵为寄主植物的亚洲玉米螟种群增长最快,其次为玉米。研究表明,亚洲玉米螟的寄主植物共有9科27种,较适宜寄主植物有酸模叶蓼、玉米、谷子、苍耳和葎草,其中在玉米上的生长发育和繁殖最佳。

Host plants of the Asian corn borer, Ostrinia furnacalis (Guenée) (Lepidoptera:Crambidae)

In order to explore the host species of Asian corn borer, Ostrinia furnacalis (Guenée), 38 plant species in 13 families were assessed with field experiment and laboratory bioassay. The experimental population life table was established to study the effects of different host plants on the development and fecundity of O. furnacalis. The field experiment results showed that 20 plant species in eight families were the host plants of O. furnacalis. Polygonum lapathifolium was the most suitable host plant, followed by Zea mays, Setaria italica, Coix lacroyma-jobi and so on. The second generation of O. furnacalis larvae was found on 11 plant species, such as P. lapathifolium, Z. mays and so on. The laboratory experiment results demonstrated that O. furnacalis could complete life history on 25 plant species in nine families under the indoor conditions. O. furnacalis population fed on Helianthus annuus grew fastest, followed by Z. mays. The study indicated that 27 plant species in nine families were the host plants of O. furnacalis. The suitable host plants were P. lapathifolium, Z. mays, Xanthium sibiricum, Abutilon theophrasti, and Humulus scandens, among which Z. mays was the most suitable host plant for the growth, development and fecundity of O. furnacalis.