EFFECTS OF BACILLUS-THURINGIENSIS TOXINS IN TRANSGENIC COTTON AND POTATO ON FOLSOMIA-CANDIDA (COLLEMBOLA, ISOTOMIDAE) AND OPPIA NITENS (ACARI, ORBATIDAE)
L. Yu et al., EFFECTS OF BACILLUS-THURINGIENSIS TOXINS IN TRANSGENIC COTTON AND POTATO ON FOLSOMIA-CANDIDA (COLLEMBOLA, ISOTOMIDAE) AND OPPIA NITENS (ACARI, ORBATIDAE), Journal of economic entomology, 90(1), 1997, pp. 113-118
Methods are reported for testing the effects of toxins or small molecu
les [Bacillus thuringiensis ssp. kurstaki delta-endotoxins HD-1 CryIA(
b) and HD-73 CryIA(c)] in plants (cotton and potato) on 2 nontarget so
il arthropods, a collembolan, Folsomia candida Willem, and an orbatid
mite, Oppia nitens Koch. Time to oviposition, egg production, and Fina
l body length were unaffected when F. candida were fed residues of tra
nsgenic cotton lines #81 or #249. Total production of O. nitens adults
and nymphs was unaffected Ly feeding on leaves of both transgenic cot
ton lines. with B. thuringiensis ssp. tenebrionis CryIIIA in potato, n
o differences were seen in the 3 indices for F. candida. Overall, tran
sgenic toxin sources had no negative effects, but similar tests with c
admium as a positive control showed a concentration-rate response of d
ecreased reproduction.