Biological and eradication parameters of the tomato leafminer, Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae) affected by two biopesticides

摘要: the tomato leaf miner, Tuta absoluta (Meyrick) (lepidoptera: Gelechiidae) was treated as 1st and 3rd instars larvae with biopesticides; Bacillus thuringiensis var. kurstaki, Beauveria bassiana (Balsamo) or both to evaluate their toxicity against pest. biological eradication parameters of leafminer were affected when newly hatched by lc50 ,s biopesticides. study results obtained determined that biopesticide B. kurstaki shows greater efficiency than bassiana. While, + gave antagonistic effect tested pest compound, proved most potent instar T. followed more susceptible instars. larval pupal phase duration increased so adult durations, post oviposition period life cycle except for treatment, values lower control. in all treatments mortality sterility percentages increased. Moreover, same biopesticides caused decreases period, egg laying rate, eclosion, pupation, hatchability fecundity compared control values. on other hand, prediction (life table) treatments. female progeny/female (Mx) well survival rate (lx) decreased treatments, especially treatment. net reproductive (ro), increase (intrinsic natural (rm) finit (erm) had times generation (t) doubling (dt).