Potential of Steinernema carpocapsae(Weiser) as a biological control agent against potato tuber moth, Phthorimaea operculella(Zeller)(Lepidoptera: Gelechiidae)

The entomopathogenic nematode,Steinernema carpocapsae,was evaluated for control of the potato tuber moth,Phthorimaea operculella,under laboratory conditions.We evaluated different concentrations of S.carpocapsae for control of 2 nd,3 rd,and 4 th instar P.operculella.The median lethal concentration(LC50)of S.carpocapsae infective juveniles(IJs)to 2 nd,3 rd and 4 th instar larvae of P.operculella was 200,363,181 IJs mL–1,respectively.With the extension of treatment time,the cumulative mortality increased for 2 nd,3 rd,and 4 th instar larvae and pupae of P.operculella.Fourth instars were the most susceptible for all observation periods.Therefore,our results suggest that S.carpocapsae could be an effective biological control agent for P.operculella.

有害生物综合治理的未来发展(英文)

本文是1998年6月作者在广州召开的国际有害生物学术讨论会上的大会发言稿。撰写本文的主旨就在于促进有关有害生物综合治理（IP）的思想探索与评议。当今在世界各国，甚至在一国之内，对IPM的看法和认识颇不一致。本文内容首先评论这些看法和认识。接着，对IPM实施得好而有成绩的地方，探索它们具有哪些共同性。最后，对理想的IPM所展示的能发挥最佳作用的内容进行了讨论，特别是农民参予的IPM研究和怎样把IPM技术交到农民手中。这是未来IPM在很多地区和在很多作物能成功的要素，特别对农业户更有意义。