Title: STUDY ON THE BIOLOGY OF ENTOMOPATHOGENIC NEMATODE, STEINERNEMA CERATOPHORUM
Abstract: The biology of D 4 3 strain of Steinernema ceratophorum Jian et al. ,1997 is reported in this paper.The completion of the nematode life cycle in Galleria larvae body takes about 232~ 240 h at 25℃. However no nematode infection to the great wax moth larvae appears at 10℃.Per gram Galleria larva tissue can produce about 8 183×10 5 infective juveniles.The movement experiment showed that 49 3% of infective juveniles can move 5 cm vertical distance and 6% of them can reach 15~ 20 cm depth sand within 3 days post releasing.The tolerance ability of higher temperature of S.cera tophorum D 4 3 strain is much better than that of S.carpocapsae A24 strain,the mortality of infective juveniles of D 4 3 strain was only 24 7% whereas that of S.carpocapsae reaches to 89 4%.The ability of persistence in sand loam soil is no remarkable difference among nematode juveniles of S.cera tophorum,S.carpocapsae,and S.bicornutum after application into soil.The infectivity for three species insect larvae e.g.Semiothisa(Macaria)cinerearia,Pieris rapae L.and Sitodiplosis mosellana Gehin were 89 4,81 4 and 26 2%,respectively.The potential for biological control of insect pest is evaluated.
Publication Year: 1999
Publication Date: 1999-01-01
Language: en
Type: article
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