Effects of sublethal doses of beta-cyfluthrin on mutant Drosophila melanogaster (Diptera: Drosophilidae)

Abstract

Laboratory experiment was conducted to examine sublethal effects of beta-cyfluthrin (Bulldock ® 025 SC) on the sepia mutant of Drosophila melanogaster at a temperature of 25Ϯ0.5°C, 50Ϯ5% relative humidity and a photoperiod of 16 : 8 (light : dark) hours. Males and females were exposed separately to beta-cyfluthrin (one tenth of the calculated LC 50 value) mixed in the diet for 24, 48 and 72 h. Fecundity, hatchability, pupation, adult emergence, larval, pupal and total developmental periods were evaluated in the F 1 generation after various cross combinations. A reduction in fecundity, egg hatching, number of larvae, pupae, adults and prolongation of larval, pupal and total developmental periods was observed. A significant reduction (pϽ0.05) in fecundity was observed only on the treated diet after treatment of both the sexes. Maximum effects were observed after 72 h treatment followed by 48 and 24 h. Males were found to be more susceptible to beta-cyfluthrin as compared to the females.

Contraceptive and biochemical effect of juice extract of Allium cepa , Allium sativum , and their combination in Canton S fruit flies

“…This indeed supports the claim that onion and garlic could serve as contraceptives in flies. Similar effects were observed in flies have also been reported (Nadda et al., 2005; Razdan et al., 2003).…”

Sublethal effects of indoxacarb on the diamondback moth, Plutella xylostella (L.) (Lepidoptera: Yponomeutidae)

“…Sublethal doses affect the physiological and behavioral properties of insects (Haynes 1988). Sublethal doses can influence the developmental time (Wang et al 2008), weight of larvae, pupae, adults (Yin et al 2008;Gupta and Chandel 1995), adult longevity (Cutler et al 2005;Ergin et al 2007), hatchability (Alyokhin et al 2008;Nadda et al 2005), fecundity (Haseeb and Amano 2002;Wang et al 2009), egg size (Fujiwara et al 2002;Yin et al 2008), and reproduction parameters such as the net reproductive rate (R 0 ), intrinsic rate of increase (r m ), finite rate of increase (k), generation time (T), doubling time (Dt) (Rezaei et al 2007;Zanuncio et al 2005;Lashkari et al 2007), and the sex ratio (Delpuech and Meyet 2003). Sublethal doses of insecticides frequently cause resurgence through physiological and ecological mechanisms (Ripper 1956;Luckey 1968).…”

Effect of Cypermethrin on Some Developmental Stages of Drosophila melanogaster

“…This indicates that the toxic effect in the F 1 generation was still present in the F 2 generation. A similar study analyzed the effect of a synthetic pyrethroid called beta-cyfluthrin on the sepia mutant of Drosophila melanogaster and concluded that it caused egg hatching to decrease (Nadda et al 2005). It is claimed that the reason for this may be inappropriate incorporation of the yolk, causing the embryo to fail to complete its phases of development.…”

“…It is claimed that the reason for this may be inappropriate incorporation of the yolk, causing the embryo to fail to complete its phases of development. Additionally, it has been suggested that a decrease in egg hatching may result from antifeedant and repellant effects of beta-cyfluthrin, leading to weak and nonviable egg laying (Nadda et al 2005).…”