Field efficiency of indigenous egg parasitoids (Hymenoptera, Trichogrammatidae) to control the olive moth (Prays oleae, Lepidoptera, Yponomeutidae) and the jasmine moth (Palpita unionalis, Lepidoptera, Pyralidae) in an olive plantation in Egypt

Hegazi, E. M.; Herz, Annette; Hassan, S. A.; Khafagi, W. E.; Agamy, E. A.; Zaitun, Ahmed; El-Aziz, Gehan Abd; Showeil, Sania; El-Said, Somaia; Khamis, N.

doi:10.1016/j.biocontrol.2007.07.009

Cited by 25 publications

(14 citation statements)

References 27 publications

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“…Similarly, for glasshouse tomatoes in Brazil, a release rate of 800,000 wasps/ha has reduced fruit damage by tomato borer to levels that are comparable to the use of conventional insecticides (Parra and Zucchi 2004). In Egypt, 11 two-weekly releases of 3 million female wasps/ha through the season proved to be very effective in suppressing two key lepidopteran pests of olive (Hegazi et al 2007). Using comparative releases of different Trichogramma species, egg parasitism for each of the two pests reached 91% for the most effective indigenous wasp species, with pest larval densities reduced by as much as 83%, and fruit damage maintained below 5%.…”

Section: Trichogrammamentioning

confidence: 95%

Egg Parasitoids in Biological Control and Integrated Pest Management

Mills

2009

Egg Parasitoids in Agroecosystems With Emphasis on Trichogramma

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Section: Trichogrammamentioning

confidence: 95%

Egg Parasitoids in Biological Control and Integrated Pest Management

Mills

2009

Egg Parasitoids in Agroecosystems With Emphasis on Trichogramma

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“…The use of polyphagous egg parasitoids of the genus Trichogramma for the control of various species of orchard and field crop Lepidoptera has received much attention (Usun et al 1996;Ö ztemiz and Kornosor 1999;Mills et al 2000;Wright et al 2001;Ulrichs and Mewis 2004). For instance, the efficacy of augmentative releases of T. dendrolimi and T. embryophagum against the codling moth, Cydia pomonella in apple orchards (Hassan et al, 1998); T. platneri against the avocado pest, Amorbia cuneana in avocado orchards (Honda 2005) and T. bourarachae, T. cordubensis and T. euproctidis against the jasmine moth, Palpita unionalis and the OM in olive orchards (Hegazi et al 2007) was tested. The results suggested that releases of Trichogramma wasps could improve control of lepidopterous pests on orchards.…”

Section: Introductionmentioning

confidence: 99%

Field evaluation of the egg parasitoid, Trichogramma evanescens West. against the olive moth Prays oleae (Bern.) in Egypt

Agamy

2009

J Pest Sci

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In Egypt, Trichogramma evanescens Westwood (TE) is extensively used in inundative releases against a number of lepidopterous pests of several crops. However, the wasp had not been collected from olive groves. Field trials on the use of commercially available TE against the olive moth, Prays oleae (Bern.) (OM) were carried out for three successive years (2002)(2003)(2004). The objective of this study was to evaluate the efficacy of inundative releases of this wasp on damage reduction. The obtained results were encouraging since OM attacks were reduced by 42.9,71 and 69.9% and TE-treated trees yielded significantly bigger olive fruits by 10.5 and 12.5% than untreated trees in 2002 and 2004 olive seasons, respectively. However, parasitization levels indicated that the wasp is not well adapted to local environmental conditions of olive groves. The suggested measure to improve the quality of released wasps is to mass release of local wasps isolated during the present study, i.e., T. cordubensis Vargas and Cabello and T. euproctidis Girault.

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“…Recently, research has focused on the development of an integrated pest control strategy for these pests based on the use of sex pheromones coupled with inundative release of certain Trichogramma species (Hegazi et al, 2007a). Developing a sustainable control method against the lepidopteran pests requires the employment of efficient parasitoid species.…”

Section: Olfactometermentioning

confidence: 99%

“…have been widely used as biological control agents against lepidopteran crop pests (Smith, 1996;Mills et al, 2000;Hegazi et al, 2007a), and quality control has frequently been suggested to be of overriding importance in the success of biological control (Liu & Smith, 2000;Hassan & Zhang, 2001;Mills & Kuhlmann, 2004).…”

Section: Olfactometermentioning

confidence: 99%

“…Larvae of each successive generation attack the inflorescence, fruits and leaves, with the second generation causing most of the damage (Mazomenos et al, 1999). The major sex pheromone components of P. oleae, (Z)-7-tetradecenal (Z7-14:Ald) (Campion et al, 1979) and P. unionalis (E)-11-hehadecenyl acetate (E11-16:Ac) and (E)-11-hexadecenal (E11-16:Ald) (Mazomenos et al, 1994) are currently being used either in monitoring the moth populations or for pest control, employing the mating disruption method (Mazomenos et al, 1999;Athanassiou et al, 2004;Hegazi et al, 2007b).Recently, research has focused on the development of an integrated pest control strategy for these pests based on the use of sex pheromones coupled with inundative release of certain Trichogramma species (Hegazi et al, 2007a). Developing a sustainable control method against the lepidopteran pests requires the employment of efficient parasitoid species.…”

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confidence: 99%

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Kairomonal effect of sex pheromone components of two lepidopteran olive pests on Trichogramma wasps

2009

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Kairomonal effect of sex pheromone components of two lepidopteran olive pests on Trichogramma wasps Abstract Egg parasitoids are known to use a wide range of chemicals, emitted by plants, host eggs or adults, for host selection. The effect of the sex pheromone components of the lepidopteran olive pests Prays oleae (Lepidoptera: Yponomeutidae) and Palpita unionalis (Lepidoptera: Pyralidae) was studied under laboratory conditions, on the foraging behaviour of the egg parasitoid Trichogramma oleae (Hymenoptera: Trichogrammatidae). The response of T. oleae wasps to (Z)-7-tetradecenal and (E)-11-hexadecenal, major sex pheromone components of P. oleae and P. unionalis respectively, depended on the dose of the pheromone used in a Y-tube olfactometer bioassay. (E)-11-hexadecenal elicited maximum attraction (70%) at a dose of 1 μg, while a dose of 100 μg (Z)-7-tetradecenal attracted 80% of the tested wasps. (E)-11-hexadecenyl acetate, the second sex pheromone component of P. unionalis, and the binary blend of (E)-11-hexadecenyl acetate: (E)-11-hexadecenal (7:3) were not attractive at these doses. The results of this research are discussed in view that they may be considered as alternatives in the biological control of these pests. Key words egg parasitoids, olive pest, semiochemicals, Y-tube olfactometer IntroductionParasitoids are confronted with many different semiochemicals of their hosts and plants during habitat location, host location and acceptance (Vinson, 1991). Many of them use semiochemicals emitted from their hosts, or their hosts' habitats, as cues to host location (Noldus, 1988;Noldus et al., 1991a;Godfray, 1994). Host semiochemicals, such as sex pheromones, chemicals produced by larval feeding activity, chemicals from larval frass or plant volatiles used by herbivore insects to locate their hosts, may serve as kairomonal or synomonal cues for parasitoids (Noldus, 1989;Hilker & Meiners, 1999;Abdelgader & Mazomenos, 2002;Romeis et al., 2005;Fatouros et al., 2008).Trichogramma parasitoids utilise sex pheromones from calling moths to locate their host (Noldus et al., 1985;Noldus, 1988;Frenoy et al., 1992;Colazza et al., 1997;Fiaboe et al., 2003). In addition, the egg itself can be a direct source of kairomones (Frenoy et al., 1992;Boo & Yang, 2000) and recently oviposition-inducing plant cues have been reported to arrest Trichogramma parasitoids (Fatouros et al., 2005). In a field experiment, Lewis et al. (1982) reported an increase of parasitism rate on Heliothis zea eggs by Trichogramma spp., on cotton plots treated with a synthetic pheromone blend of H. zea. In a laboratory experiment, T. pretiosum showed a positive behavioural response to the odour of calling H. zea virgin females (Noldus, 1989). Noldus et al. (1991b) showed that the airborne sex pheromone from a single female Mamestra brassicae moth can be absorbed on a Brussels spout leaf and subsequently elicit behavioural responses in conspecific male moths as well as in Trichogramma parasitoids. Additionally, T. chilonis females were attracted to sing...

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Field efficiency of indigenous egg parasitoids (Hymenoptera, Trichogrammatidae) to control the olive moth (Prays oleae, Lepidoptera, Yponomeutidae) and the jasmine moth (Palpita unionalis, Lepidoptera, Pyralidae) in an olive plantation in Egypt

Cited by 25 publications

References 27 publications

Egg Parasitoids in Biological Control and Integrated Pest Management

Egg Parasitoids in Biological Control and Integrated Pest Management

Field evaluation of the egg parasitoid, Trichogramma evanescens West. against the olive moth Prays oleae (Bern.) in Egypt

Kairomonal effect of sex pheromone components of two lepidopteran olive pests on Trichogramma wasps

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