Effect of the juvenile hormone analogue Altosid on some culicine mosquitoes and their associated insects under field and laboratory conditions

Abstract

The effect of the juvenile hormone analogue Altosid SR 10 was carried out on some species of culicine mosquitoes and associated insects under field and laboratory conditions. In laboratory, Altosid SR 10 gave direct toxic effect against larvae, prolonged larval and pupal periods, inhibited adult emergence and disturbed the sex ratio of Culex pipiens molestus (Forsk). In the field, Altosid SR 10 exhibited toxic effect against larvae and inhibited adult emergence of C. pipiens molestus, Theobaldia longiareolata (Macq.) and the rat tailed larvae Eristalis sp. The compound had no effect on the beneficial aquatic beetle Dytiscus sp. Zusammenfassung Zur Wirkung des Juvenilhormon‐Analogen Altosid auf einige Stechmückenarten (Dipt., Culicidae) und auf mit ihnen assoziierte Insekten unter Freiland‐ und Laborbedingungen Untersuchungen mit Altosid SR 10 ergaben im Labor toxische Wirkungen auf die Larven sowie Verlängerungen der Larven‐ und Puppenentwicklung, Hemmungen des Adultenschlüpfens und Störungen des Geschlechterverhältnisses von Culex pipiens molestus. Im Freiland zeigte Altosid SR 10 eine Giftwirkung auf die Larven sowie eine Hemmung des Adultenschlüpfens von C. pipiens molestus, Theobaldia longiareolata und der Larven von Eristalis sp. (Rattenschwanzlarven). Dagegen wurden nützliche Wasserkäfer (Dytiscus sp.) von der Verbin‐dung nicht beeinflußt.

Toxicity And Physiological Activity of Methoprene, A Juvenile Hormone Analog, Against Development and Metamorphosis of The Grey Flesh Fly, Parasarcophaga argyrostoma (Robineau- Desvoidy)(Diptera: Sarcophagidae).

“…In larvicidal activity of methoprene against P. argyrostoma, in the current study, was in corroboration with some reported results of methoprene larvicidal activity against some insects, such as the mosquito Culex molestus (Farghal and Temerak, 1981), the common house mosquito Culex pipiens (Gelbic et al, 2002), the Asian tiger mosquito Aedes albopictus (Khan et al, 2016), the black cutworm Agrotis ipsilon (Khatter, 2014) and C. cephalonica (Tripathi and Tiwari, 2006). Also, the present result of methoprene pupicidal activity against P. argyrostoma agreed with those reported pupicidal activity of methoprene against some insects, such as the yellow fever mosquito Aedes aegypti (Braga et al, 2005) and C. cephalonica (Tripathi and Tiwari, 2006).…”

“…The larval and/or pupal durations of several insects had been prolonged as a response to larval treatment with methoprene. For examples, methoprene treatment of C. molestus larvae resulted in prolonged larval and pupal periods (Farghal and Temerak, 1981). After topical application of methoprene onto C. cephalonica larvae, the larval duration was prolonged (Tripathi and Tiwari, 2006).…”

“…The adult emergence of P. argyrostoma was reported to be completely or partially blocked after larval treatment with certain doses of different IGRs, such as Pyriproxyfen (Ismail, 1995), Chlorfluazuron (Ghoneim and Ismail, 1995b), Hydroprene, Kinoprene and Methoprene (El-Sherif, 1986). On the other hand, Methoprene was reported to inhibit the adult emergence after larval treatment of other insect species, such as C. molestus (Farghal and Temerak, 1981), the lesser mealworm Alphitobius diaperinus (Edwards and Abraham, 1985), Ae. aegypti (Braga et al, 2005), C. cephalonica (Tripathi and Tiwari, 2006), the southern house mosquito Culex quinquefasciatus and Ae.…”