Effects of Pheromone Trap Design, Placement, and Pheromone Dispenser and Load on Male
Platynota flavedana
and
P. idaeusalis
(Lepidoptera: Tortricidae) Catches in Virginia Apple Orchards

David, P. J.; Horsburgh, R. L.

doi:10.1093/ee/18.1.145

Cited by 7 publications

(3 citation statements)

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“…Nevertheless, David & Horsburgh (1989) found the highest number of the leafroller, Platynota flavedana Clemens (Lepidoptera: Tortricidae), were caught outside the apple tree canopy while the highest number of the sibling species P. idaeusalis Walker (Lepidoptera: Tortricidae) were caught inside the tree canopy. Such findings suggest that optimal trap location will vary from species to species and even between generations of a single species (David & Horsburgh, 1989). Unlike many cereal crops for example, eggplant has a relatively open canopy that would allow sustained flight inside the crop thus trap location to maximize catch was uncertain.…”

Section: Discussionmentioning

confidence: 97%

“…Similarly, insect pests associated with tree crops are most frequently trapped in highest numbers within a canopy (Bartlet et al, 1994). Nevertheless, David & Horsburgh (1989) found the highest number of the leafroller, Platynota flavedana Clemens (Lepidoptera: Tortricidae), were caught outside the apple tree canopy while the highest number of the sibling species P. idaeusalis Walker (Lepidoptera: Tortricidae) were caught inside the tree canopy. Such findings suggest that optimal trap location will vary from species to species and even between generations of a single species (David & Horsburgh, 1989).…”

Section: Discussionmentioning

confidence: 99%

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Female sex pheromone of brinjal fruit and shoot borer, Leucinodes orbonalis (Lepidoptera: Pyralidae): trap optimization and application in IPM trials

Cork

Alam

Rouf

et al. 2003

Bull. Entomol. Res.

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Delta and wing traps baited with synthetic female sex pheromone of Leucinodes orbonalis Guenée were found to catch and retain ten times more moths than either Spodoptera or uni-trap designs. Locally-produced water and funnel traps were as effective as delta traps, although 'windows' cut in the side panels of delta traps significantly increased trap catch from 0.4 to 2.3 moths per trap per night. Trap catch was found to be proportional to the radius of sticky disc traps in the range 5-20 cm radius, discs with a 2.5 cm radius caught no moths. Wing traps placed at crop height caught significantly more moths than traps placed 0.5 m above or below the crop canopy. Replicated integrated pest management (IPM) trials (3 x 0.5 ha per treatment) were conducted in farmers fields with young and mature eggplant crops. Farmers applied insecticides at least three times a week in all check and IPM plots. In addition pheromone traps were placed out at a density of 100 per ha and infested shoots removed weekly in the 0.5 ha IPM plots. Pheromone trap catches were reduced significantly from 2.0 to 0.4 moths per trap per night respectively in check and IPM plots in a young crop and 1.1 to 0.3 moths per trap per night in check and IPM plots respectively in a mature crop. Fruit damage was significantly reduced from an average of 41.8% and 51.2% in check plots of young and mature crops respectively to 22% and 26.4 respectively in the associated IPM plots. Significant differences in pheromone trap catches and fruit damage were attained four and two weeks respectively after IPM treatments began in the mature crop whereas in the immature crop significant differences were not observed for the first eight to nine weeks respectively. The relative impact of removing infested shoots and mass trapping on L. orbonalis larval populations was not established in these trials but in both cases there was an estimated increase of approximately 50% in marketable fruit obtained by the combination of control techniques compared to insecticide treatment alone.

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Section: Discussionmentioning

confidence: 97%

Section: Discussionmentioning

confidence: 99%

Female sex pheromone of brinjal fruit and shoot borer, Leucinodes orbonalis (Lepidoptera: Pyralidae): trap optimization and application in IPM trials

Cork

Alam

Rouf

et al. 2003

Bull. Entomol. Res.

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“…The optimum trap height varies with the insect species, depending upon their habits and host plant. In C. cautella catches were higher when the traps were placed 3-6 m from ground level (AHMAD 1987) and in D. grandiosellu catches in traps set at various heights ranging from 0.5-3.0 m did not differ significantly (DAVIS et al 1986); whereas in the tortricids Platynotaflavedana and P. idaeusalis optimum trap height differed for the two species and between the first and second generations (DAVID and HORSBURGH 1989). Competition between pheromone traps as well as trap interference (WALL and PERRY 1978;WALL 1984) were also factors that seemed to have influenced trap performance as seen from our results.…”

Section: Imentioning

confidence: 93%

Factors determining pheromonal trapping of the stem‐borer Chilo partellus (Swinhoe) (Lep., Pyralidae)

Unnithan

Saxena

1990

J Applied Entomology

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Certain factors which could affect pheromone trap performance were investigated, in order to develop methods for trapping males of Chilo partellm (Swinhoe), for population monitoring pur oses, using and males, trap attractive range, and trap design, height, inter-trap distance and osition. The twocomponent female sex pheromone (Z-11-hexadecenal and Z-11-hexadecen-1-01) dntified previously from C. partellus female ovipositor washings was not as effective as the virgin female in attractin the males, and hence, caged virgin females were used as lures. Two 1-day-old virgin females attractel the highest number of males; mated females continued to attract males, though in,lesser numbers. Mated males were less attracted to pheromone traps than unmated males. A locally made water trap and a modified Delta trap were e ually effective when baited with two virgin females, and both were significantly more efficient tlan-the sticky traps (Stickydisc, Delta, Phercon 1C and Lund-11) and nonsticky traps (Scentry Heliothis tra and Uni-trap) tested. The range of attraction of the femalebaited trap was more than 40 m. InteArence was seen between traps 20 m apart and also when tra s were placed cross wind and 30 m apart. Water traps or modified Delta tra s baited with two I-day-oyd virgin females set at 0.5-1.0 m from ground level and 40-80 m apart can ge used effectively for monitoring C. partellus populations. female sex attractant. These factors included: pheromone source, age and mating status o P the females IntroductionAmong the various species of stem-borers which severely affect maize and sorghum production, Chilo partellus (Swinhoe) is the most important in Asia and parts of Africa (HARRIS 1989). It is important to have reliable and convenient methods for monitoring its populations, in order to develop suitable control strategies and methods for reducing the losses caused by this insect. Monitoring of C. partellus populations has been mainly based on sampling the immature stages of the pest (egg, larva and pupa) by destructive sampling of the crop. This method is laborious and often can be done only after the pest damage has occurred. Monitoring of the adult populations using pheromone-baited traps, successfully employed in the case of several lepidopterous pests ( KLASSEN et al. 1982;CAMPION 1984;WALL 1984), can be done before the pest inflicts the damage to the crop and could be a more convenient and reliable method, Pheromonal monitoring of the adult populations would allow good timing of the appropriate pest management operations. A pheromonal monitoring system has not been developed for C. partellus, but, two components of the female sex pheromone, 2-1 1-hexadecenal and Z-11-hexadecen-1-01 were identified from the ovipositor washings of virgin females of C. partellus, in India (NESBITT at al. 1979), and the former was found highly attractive to males in field trials.Since then no other study has been reported, and we have, therefore, investigated the factors which could determine the performance of the pheromone trap w...

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10.1007/BF02383001

2011

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Effects of Pheromone Trap Design, Placement, and Pheromone Dispenser and Load on Male Platynota flavedana and P. idaeusalis (Lepidoptera: Tortricidae) Catches in Virginia Apple Orchards

Cited by 7 publications

References 0 publications

Female sex pheromone of brinjal fruit and shoot borer, Leucinodes orbonalis (Lepidoptera: Pyralidae): trap optimization and application in IPM trials

Female sex pheromone of brinjal fruit and shoot borer, Leucinodes orbonalis (Lepidoptera: Pyralidae): trap optimization and application in IPM trials

Factors determining pheromonal trapping of the stem‐borer Chilo partellus (Swinhoe) (Lep., Pyralidae)

10.1007/BF02383001

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