Trichogramma pretiosum attraction due to the Elasmopalpus lignosellus damage in maize

Xavier, Luciane Modenez Saldivar; Laumann, R. A.; Borges, Miguel; Magalhães, Diego Martins; Vilela, Evaldo F.; Blassioli‐Moraes, Maria Carolina

doi:10.1590/s0100-204x2011000600002

Cited by 11 publications

(8 citation statements)

References 21 publications

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“…Naturally, healthy maize plants give off volatile compounds such as green leaf volatiles (GLVs) that are attractive to the natural enemies, but their release rate is much lower than the HIPVs released by host-and nonhost-infested plants (Takabayashi et al, 1991(Takabayashi et al, , 1995Huang et al, 2009). Parasitoids can respond to specific volatile blends of HIPVs from their host-infested plants as host-searching cues (e.g., Turlings et al, 1991;Steinberg et al, 1993;Gouinguen e et al, 2003;Xavier et al, 2011); HIPVs induced by non-hosts may also be attractive for them (McCall et al, 1993;Shiojiri et al, 2000a;Ponzio et al, 2014).…”

Section: Discussionmentioning

confidence: 99%

Effects of quantitative and qualitative differences in volatiles from host‐ and non‐host‐infested maize on the attraction of the larval parasitoid Cotesia kariyai

Thanikkul

Piyasaengthong

Menezes-Netto

et al. 2017

Entomologia Exp Applicata

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Cotesia kariyai Watanabe (Hymenoptera: Braconidae) is a specialist larval parasitoid of Mythimna separata Walker (Lepidoptera: Noctuidae). Cotesia kariyai wasps use herbivore‐induced plant volatiles (HIPVs) to locate hosts. However, complex natural habitats are full of volatiles released by both herbivorous host‐ and non‐host‐infested plants at various levels of intensity. Therefore, the presence of non‐hosts may affect parasitoid decisions while foraging. Here, the host‐finding efficiency of naive C. kariyai from HIPVs influenced by host‐ and non‐host‐infested maize [Zea mays L. (Poaceae)] plants was investigated with a four‐arm olfactometer. Ostrinia furnacalis Guenée (Lepidoptera: Crambidae) was selected as a non‐host species. One unit (1 U) of host‐ or non‐host‐infested plant was prepared by infesting a potted plant with five host or seven non‐host larvae. In two‐choice bioassays, host‐infested plants fed upon by different numbers of larvae, and various units of host‐ and non‐host‐infested plants (infestation units; 1 U, 2 U, and 3 U) were arranged to examine the effects of differences in volatile quantity and quality on the olfactory responses of C. kariyai with the assumption that volatile quantity and quality changes with differences in numbers of insects and plants. Cotesia kariyai was found to perceive quantitative differences in volatiles from host‐infested plants, preferring larger quantities of volatiles from larger numbers of larvae or plants. Also, the parasitoids discriminated between healthy plants, host‐infested plants, and non‐host‐infested plants by recognising volatiles released from those plants. Cotesia kariyai showed a reduced preference for host‐induced volatiles, when larger numbers of non‐host‐infested plants were present. Therefore, quantitative and qualitative differences in volatiles from host‐ and non‐host‐infested plants appear to affect the decision of C. kariyai during host‐habitat searching in multiple tritrophic systems.

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Section: Discussionmentioning

confidence: 99%

Effects of quantitative and qualitative differences in volatiles from host‐ and non‐host‐infested maize on the attraction of the larval parasitoid Cotesia kariyai

Thanikkul

Piyasaengthong

Menezes-Netto

et al. 2017

Entomologia Exp Applicata

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“…Some plant volatile organic compounds and hydrocarbons act as semiochemicals in host selection and host recognition by T. chilonis (Dicke et al., ; Hoballah and Turlings, ; Romies et al., ; Sen et al., ). Various plant‐generated volatile compounds may act in indirect host plant defense, serving as efficient cues to T. chilonis (Hohmann et al., ; Xavier et al., ; Usha Rani and Sandhyarani, ). This supports the concept that plant chemicals produced due to biotic stress can attract parasitoids.…”

Section: Discussionmentioning

confidence: 99%

Physiological Effects of Resveratrol and Coumaric Acid on Two Major Groundnut Pests and Their Egg Parasitoid Behavior

Pratyusha

Rani

2016

Arch Insect Biochem Physiol

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Groundnut, Arachis hypogea L., is one of the plant species that synthesizes phenolic compounds, resveratrol and coumaric acid. They are induced as a defense strategy in plant in response to feeding lepidopterans. The present study investigated the role of resveratrol and coumaric acid in producing antiherbivore effects as a direct defense against two major groundnut pests, Spodoptera litura F. and Amsacta albistriga W., and in indirect defense by attracting the egg parasitoid Trichogramma chilonis Ishii under laboratory conditions. The phenolic compounds deterred the feeding of both pests and caused reduction in the larval weights in a dose-dependent manner in leaf disk bioassays. Antioxidant mechanisms of larvae fed with these phenols were measured by estimating the activities of superoxide dismutase (SOD), ascorbate peroxidase (APOX), and catalase (CAT). Enzyme activities increased significantly in experimental larvae, more so in resveratrol-treated than in coumaric acid treated larvae. Feeding larvae with resveratrol and coumaric acid resulted in enhanced activities of detoxifying enzymes, carboxyl esterase (EST), and glutathione-S-transferase (GST) in the midgut tissues of both species, indicating the toxic nature of these compounds. Trichogramma chilonis was more attracted toward coumaric acid treatments in Y-olfactometer tests than to resveratrol. This study contributes to the understanding of the roles of resveratrol and coumaric acid in direct as well as indirect defense, we infer a possible utilization of these compounds in alternate measures of groundnut pest control in future.

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“…In addition, chemical control, when misused, can select resistant populations of the insect, causing deleterious effects to the environment, animal health and increased production costs (Dalvi et al, 2011;Zorzetti et al, 2017). Berliner (Xavier et al, 2011;Moar et al, 1995).…”

Section: Methodsmentioning

confidence: 99%

SUSCEPTIBILITY OF Elasmopalpus lignosellus PUPAE TO ENTOMOPATHOGENIC NEMATODES IN MAIZE

Magnabosco

Andaló²,

Carvalho³

2020

RBMS

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Virulence and concentration of entomopathogenic nematodes (NEPs)in Elasmopalpus lignosellus pupae were evaluated. In the laboratory, the virulence of the isolates Heterorhabditis amazonensis MC01, H. amazonensis JPM3, H. amazonensis GL, Steinernema carpocapsae All and Heterorhabditis sp. Nepet 11 was evaluated and, subsequently, H. amazonensis GL was applied at concentrations of 8; 16; 24 and 32 IJ cm-2. The EPNs were applied to Petri dishes containing ten pupae with five replications. Mortality was assessed every 24 hours for three days. In a greenhouse, H. amazonensis GL was tested at concentrations 24, 25, 26 and 27 IJ cm-2. The IJs were applied in pots containing a 20-cm high ‘BM 3061’ maize plant, besides six pupae with four replications. Knowing that the efficiency of EPNss is directly related to the ability to search and penetrate the host, it was found that H. amazonensis GL is highly virulent to E. lignosellus, presenting an LC50 of 6.49 IJ cm-2 after 48 hours, 5.61 IJ cm-2 in 72 hours and LC90 of 39.70 IJ cm-2 in 48 and 27.73 IJ cm-2 in 72 hours under laboratory conditions. In the soil, pupal mortality was lower and a concentration of 25 IJ cm-2 was responsible for the death of 50% of the population, since environmental variability influences the dynamics of IJ infection and insect defense.

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Trichogramma pretiosum attraction due to the Elasmopalpus lignosellus damage in maize

Cited by 11 publications

References 21 publications

Effects of quantitative and qualitative differences in volatiles from host‐ and non‐host‐infested maize on the attraction of the larval parasitoid Cotesia kariyai

Effects of quantitative and qualitative differences in volatiles from host‐ and non‐host‐infested maize on the attraction of the larval parasitoid Cotesia kariyai

Physiological Effects of Resveratrol and Coumaric Acid on Two Major Groundnut Pests and Their Egg Parasitoid Behavior

SUSCEPTIBILITY OF Elasmopalpus lignosellus PUPAE TO ENTOMOPATHOGENIC NEMATODES IN MAIZE

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