A Field Experiment in the Control of House Flies with Chemosterilant Baits

1995

Bull. Entomol. Res.

The effects of the chitin synthesis inhibitor triflumuron, 2-chloro-N- [[[4-(trifluoromethoxy)phenyl]amino]carbonyl]benzamide, on the housefly, Musca domestica Linnaeus were examined in the laboratory. A dose of 1 fig of triflumuron applied topically to adult females of M. domestica resulted in egg hatch inhibition greater than 95%. At doses below 1 ug applied topically to adult females, subsequent hatched larvae were also highly sensitive to triflumuron; 0.5 |Xg applied topically produced 25% inhibition of egg hatch, but of the larvae that eclosed, only 20% survived to pupation. Hence, a dose of 0.5 fig applied to adults gave a total mortality of 85%. The effects of a single topical application of triflumuron declined over time in a dose dependent manner. After a dose of 1 \xg, < 5% of the first egg batch hatched, however, after 14 days egg hatch had risen to > 90%. Topically applied triflumuron was most effective in inhibiting egg hatch when applied to females less than 3 days old. After 60 min tarsal contact with 20% triflumuron suspension concentrate on poly cotton cloth, 100% egg hatch inhibition was maintained for up to 1 week. Lower contact times, or triflumuron concentrations, gave lower percentage mortalities. The results suggest that triflumuron has considerable potential as a control agent for incorporation into autosterilizing devices for housefly control. However, further work is required to develop delivery systems capable of transferring an effective dose to females under field conditions.

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Section: Introductionmentioning

confidence: 99%

The effects of triflumuron, a chitin synthesis inhibitor, on the housefly,Musca domestica(Diptera: Muscidae)

1995

Bull. Entomol. Res.

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“…In livestock systems the housefly, Musca domestica Linneaus, is considered to be an important pest, affecting animal performance and transmitting disease (Patterson & Rutz, 1986;Drummond et al, 1988;Axtell & Arends, 1990). Numerous efforts have been made to develop autosterilizing systems for the control of this species (LaBrecque, 1961;LaBrecque et al, 1960LaBrecque et al, , 1962LaBrecque et al, , 1966. However, previous work has had limited success, primarily because of the unavailability of chemicals which were both effective against flies and safe for beneficial insects and non-insect fauna.…”

Section: Introductionmentioning

confidence: 99%

The use of triflumuron on sugar‐baited targets for autosterilization of the housefly, Musca domestica

Entomologia Exp Applicata

1995

A target system, capable of delivering an effective transovarial dose of the chitin synthesis inhibitor triflumuron to the house fly Musca domestica Linnaeus (Diptera: Muscidae), is described. A single 15 × 5 cm polyester target, dipped in triflumuron 10% suspension concentrate (s.c.) and 50% W/V sucrose solution and suspended in 30 × 30 × 30 cm cages of approximately 400 adult M. domestica for 24 h, reduced mean egg hatch to 47%. Egg hatch was reduced to 35% by allowing flies access to similar targets for 7 d. Exposure to triflumuron also interrupted the developmental cycle at the larval stage. After adult M. domestica had been exposed for 24 h to a target baited with 10% triflumuron s.c. and a 50% W/V sucrose solution, only 6% of eclosed larvae pupariated; longer exposure times prevented any pupariation. However, beyond pupariation, there appeared to be no further effect of triflumuron. The age of the flies at first exposure also affected the extent of the ovicidal and larvicidal effects induced, younger adults being more susceptible. However, effects were shown to decrease with time after exposure to triflumuron. A target dosed with 3% triflumuron s.c. resulted in a greater ovicidal effect than a target dosed with 10% triflumuron, suggesting that the higher doses were detected and elicited some negative response from the flies. Effects on females via the treatment of males were demonstrated. The results suggest that utilization of sugar‐baited targets dosed with a low concentration of triflumuron may be a useful step in the development of autosterilizing systems for house fly control.

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“…To maximize its effectiveness the autosterilizing system used should affect both sexes of the target species (Langley & Weidhaas, 1986;Wall & Howard, 1984). The development of autosterilizing devices for housefly control was first considered in the 1960's (LaBrecque et al., 1962;LaBrecque & Meifert, 1966). However, this work met with limited success, primarily because of the non-availability at that time of sterilants which were both effective against target flies yet safe for nontarget organisms.…”

mentioning

confidence: 99%

Autosterilization of the house fly, Musca domestica, using the chitin synthesis inhibitor triflumuron on sugar‐baited targets

1996

Medical Vet Entomology