1992
DOI: 10.1051/apido:19920508
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Toxicity of diflubenzuron and penfluron to immature stages of Apis cerana indica F and Apis mellifera L

Abstract: Summary — Diflubenzuron (DF) and penfluron (PF) in acetone were found to be equally toxic to Apis mellifera and A cerana indica in topical application tests based on equivalent body weights. Toxicity resulting from median lethal dosage was highest for pupae and was lower for IV and III instar larvae. Acetone proved lethal to eggs, I and II instar larvae. There was no delayed lethal and morphological effect of the treatment on larvae, but some adult bees, treated in the same manner as pupae, showed morpho… Show more

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Cited by 12 publications
(11 citation statements)
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“…mL -1 ). The authors found a topical LD 50 of 50 ng per larva and an oral LD 50 of 120 ng, which was contradictory to Chandel and Gupta's (1992) results who studied the toxicity of diflubenzuron to third and fourth larval instars. The topical LD 50s were 2.42 and 6.01 µg .…”
Section: Diflubenzuronmentioning
confidence: 60%
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“…mL -1 ). The authors found a topical LD 50 of 50 ng per larva and an oral LD 50 of 120 ng, which was contradictory to Chandel and Gupta's (1992) results who studied the toxicity of diflubenzuron to third and fourth larval instars. The topical LD 50s were 2.42 and 6.01 µg .…”
Section: Diflubenzuronmentioning
confidence: 60%
“…Il y a aussi possibilité d'inhibition des glandes hypopharyngiennes et d'apparition de caractères royaux. Larves et nymphes intoxiquées sont éjectées des cellules par les ouvrières (Zdarek et Haragsim, 1974 ;Beetsma et Ten Houten, 1975 ;Gerig, 1975 ;Hrdy et Skrobal, 1976 ;Rembold et al, 1980Rembold et al, , 1982El Din et al, 1990 ;Gerig, 1990 ; Van der Steen et de Ruijter, 1990 ;Marletto et al, 1992 ;Chandel et Gupta, 1992 ;Nitsch et al, 1994 ;Gromisz et Gromisz, 1996).…”
Section: Resultsunclassified
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“…Usha and Kandasamy (1986) El-Din et al (1990). The toxicity of DF and PF to developing stages of A c indica and A mellifera has been reported by Chandel and Gupta (1992 Gomez and Gomez (1984 (Richards and Davies, 1977). Treatment is known to slow down peritrophic membrane production in Orthoptera (Clarke et al, 1977;Becker, 1978).…”
Section: Introductionmentioning
confidence: 87%