Nocturnal parasitism of moth eggs by<i>Trichogramma</i>wasps

Woelke, Jozef B.; Bukovinszky, Tibor; Huigens, Martinus E.

doi:10.1080/09583157.2017.1342221

Cited by 5 publications

(4 citation statements)

References 29 publications

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“…As the time reaching 12.00 p.m, flowers of T. ulmifolia close their petals again until it blooms the next morning. However, parasitoid species coming from Chalcididae family which is known to be diurnal may also attack its prey at night [39]. The Chalcididae is one of Hymenopterans parasitoid crucial in controlling the bagworms of different species namely Metisa plana and Mahasena corbetti [40].…”

Section: Resultsmentioning

confidence: 99%

Distinctiveness and Potentials of Two Flowering Roadside Hedgerows, Turnera Ulmifolia and Melastoma Malabathricum as Beneficial Plants for Insects

Abdullah¹,

Rahim²

2018

Environ. ecosyst. sci.

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Beneficial flowering plants play a vital role in attracting beneficial insects such as parasitoid that controls insect pests. In order to evaluate the effectiveness of two species of flowering plants as beneficial hedgerow plants, we identify insects communities of T. ulmifolia and M. malabathricum, which generally grown on roadside. We also compared the insects community of both plants based on time of the day. A total of 5,029 insect individuals were collected through three sampling occasions from five sampling stations of T. ulmifolia and five sampling stations of M. malabathricum. Chi-square test showed that there was a significant difference (χ2=37.3848, df=1, P<0.05) between the composition of insect communities on M. malabathricum and T. ulmifolia. The insect visiting M. malabathricum were similar at both night and day while T. ulmifolia attracted different insect community depending on the time of the day. The results suggested that different plant species would attract a different community of insects. T. ulmifolia success in attracting the visitation of beneficial insect but its effectiveness is limited to a short period of time. Meanwhile, the effectiveness of M. malabathricum as beneficial plant is yet illuminated.

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Section: Resultsmentioning

confidence: 99%

Distinctiveness and Potentials of Two Flowering Roadside Hedgerows, Turnera Ulmifolia and Melastoma Malabathricum as Beneficial Plants for Insects

Abdullah¹,

Rahim²

2018

Environ. ecosyst. sci.

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“…The perception of pheromone molecules released by adults can lead the parasitoid to mating sites, where copulation is about to occur or in progress. In addition, parasitoids can use pheromonal molecules to find females with the intention of performing phoresis (Woelke et al, 2017). According to Fatouros et al (2008), scales impregnated with pheromones deposited on the eggs can provide evidence of oviposition sites, and the substances present in the egg masses and the chorion can also act as short-distance kairomones (Bin et al, 1993).…”

Section: Discussionmentioning

confidence: 99%

“…Trichogramma species (Hymenoptera: Trichogrammatidae) are important biological control agents of agricultural pests (Woelke et al, 2017) and have more than 400 host species, especially Lepidoptera (Harba & Idris, 2018). The success of egg parasitoids in the field is closely associated with their search capacity (Siqueira et al, 2011), which is mainly mediated by chemical stimuli from hosts (Strand & Vinson, 1982; Vinson, 1998).…”

Section: Introductionmentioning

confidence: 99%

Influence of semiochemicals present in the scales of Spodoptera frugiperda on chemotactic behavior of Trichogramma pretiosum

Vargas

Sant’Ana

Blassioli‐Moraes

et al. 2021

Entomologia Exp Applicata

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Trichogramma species (Hymenoptera: Trichogrammatidae) are known to use the host's sex pheromone as a kairomone in foraging strategies. Spodoptera frugiperda Smith (Lepidoptera: Noctuidae) deposit scales on eggs during oviposition, which may be a mechanical barrier or facilitate the action of parasitoids due to the presence of semiochemicals. This study identified the compounds in S. frugiperda scales and evaluated the chemotactic responses of Trichogramma pretiosum Riley to volatiles in host eggs and scales, as well as to synthetic equivalents of substances identified therein. Bioassays were performed with scales extracted from the wings and abdomen of females under three conditions: virgin, mated, or mated and oviposited. The parasitoids were tested in a two-choice olfactometer comparing scales, eggs, and synthetic compounds. The extracts were analyzed by gas chromatography and mass spectrometry (GC-MS) and 20 compounds were identified, among them two acetate components of the sex pheromone of S. frugiperda (Z9-14:OAC and Z11-16:OAC). Trichogramma pretiosum females did not differentiate between scales from wings and abdomen. They were more attracted to scales from virgin and mated S. frugiperda females, and these treatments did not trigger different chemotactic responses compared with eggs. The parasitoid was significantly attracted to Z9-14:OAC and Z11-16:OAC. We conclude that T. pretiosum use chemical clues in the scales to search for S. frugiperda eggs.

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“…The time budgets of most animals, including insects, are composed of alternating periods of activity and inactivity (Fleury et al, 2000; Tomioka & Matsumoto, 2010; Woelke et al, 2017). Activity patterns are partially driven by environmental light–dark cycles (Power et al, 1995; Saunders, 2002; Silva & Gimenes, 2014) but also by endogenous rhythms, which may serve as an adaptation to certain environmental or physiological conditions (Fleury et al, 2000; Moore, 2001; Pompanon et al, 1999).…”

Section: Introductionmentioning

confidence: 99%

Host patch quality increases parasitoid locomotor activity despite risk of egg limitation

Paul

Abram

Lee

2022

Ecological Entomology

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Theory predicts that egg load and foraging activity of insects should be positively related. Species that emerge with a low initial egg load and mature additional eggs as they age may limit initial foraging activity to avoid egg limitation. Similarly, females, which deplete their egg supply through oviposition, should decrease activity immediately afterwards and then increase activity as new eggs are matured. The authors used activity monitors to measure daily locomotor activity separately from exposure to host cues with the stink bug egg parasitoid, Trissolcus japonicus. The authors measured activity and egg load as newly emerged wasps aged and tested whether egg depletion from oviposition would reduce activity. Parasitoid activity increased with age in parallel with egg maturation, with both egg load and activity reaching their maximum about 6–7 days after emergence. Newly emerged wasps began activity later in the day and had lower activity intensity compared with older individuals. When given host experience, females that had laid many offspring, and had thus depleted their egg loads, unexpectedly increased their activity for up to 3 days. The present study results challenge the generally accepted positive relationship between foraging activity and egg load, suggesting that this relationship may be secondary to host patch quality. The authors provide evidence that host patch quality can influence not only within‐patch but also between‐patch foraging activity. Plastic responses in activity patterns may allow parasitoids to better exploit rich host environments while minimising foraging costs and decreasing likelihood of egg limitation in low‐quality environments.

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Nocturnal parasitism of moth eggs byTrichogrammawasps

Cited by 5 publications

References 29 publications

Distinctiveness and Potentials of Two Flowering Roadside Hedgerows, Turnera Ulmifolia and Melastoma Malabathricum as Beneficial Plants for Insects

Distinctiveness and Potentials of Two Flowering Roadside Hedgerows, Turnera Ulmifolia and Melastoma Malabathricum as Beneficial Plants for Insects

Influence of semiochemicals present in the scales of Spodoptera frugiperda on chemotactic behavior of Trichogramma pretiosum

Host patch quality increases parasitoid locomotor activity despite risk of egg limitation

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