Fungi isolated from insects in strawberry crops act as potential biological control agents of Duponchelia fovealis (Lepidoptera: Crambidae)

Poitevin, Carolina Gracia; Porsani, Mariana Vieira; Poltronieri, Alex Sandro; Zawadneak, María Aparecida Cassilha; Pimentel, Ida Chapaval

doi:10.1007/s13355-018-0561-0

Cited by 26 publications

(25 citation statements)

References 35 publications

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“…The effectiveness of the commercial biopesticides and EF strains tested in the present study in controlling D. fovealis has already been demonstrated [20]. Meanwhile, this study suggests that the residual effects of these biocontrol agents on T. atopovirilia and T. pretiosum were minimal.…”

Section: Discussionsupporting

confidence: 58%

Compatibility between Entomopathogenic Fungi and Egg Parasitoids (Trichogrammatidae): A Laboratory Study for Their Combined Use to Control Duponchelia fovealis

Araujo

Poltronieri

Poitevin

et al. 2020

Insects

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The European pepper moth, Duponchelia fovealis (Lepidoptera: Crambidae), is a key pest in strawberry production. Entomopathogenic fungi (EF) and parasitoids of the Trichogrammatidae family are effective biological control agents of this pest with the potential to be used jointly for improved efficacy. This study aims to evaluate the susceptibility of Trichogramma atopovirilia and Trichogramma pretiosum to two Beauveria bassiana strains (B2 and B3) and two commercial bioinsecticides (Bovemax® and Methamax®) by applying them to D. fovealis eggs in pre- and post-parasitism periods. Pre-parasitism application of B2 and B3 did not affect the percentage of D. fovealis eggs parasitized by either Trichogramma species, except in the case of T. atopovirilia when eggs were sprayed with B3 at 1.5 × 105 conidia mL−1 (16.7% less than the control). In contrast, eggs sprayed with 1.5 × 108 conidia mL−1 of the commercial bioinsecticides were not parasitized by any Trichogramma species. Overall, the EF tested reduced the parasitism rate, adult emergence, and longevity of Trichogramma adults by less than 30% in all cases. The adverse effects of the B. bassiana strains and commercial products on the biological traits of both Trichogramma species were minimal, meaning that these agents can be used jointly in D. fovealis control strategies.

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Section: Discussionsupporting

confidence: 58%

Compatibility between Entomopathogenic Fungi and Egg Parasitoids (Trichogrammatidae): A Laboratory Study for Their Combined Use to Control Duponchelia fovealis

Araujo

Poltronieri

Poitevin

et al. 2020

Insects

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“…The prevalence of fungi was thus considerably higher in the field compared to the lab rearings. The detected taxa (10 species, Table 1) overlapped with those that were identified in the laboratory rearing, except for two species of Mucorales, known as ubiquitous saprotrophs (but see also [24]). The 19 pupae, infected by a member of Cordycipitaceae plus another fungus, suggest that the latter may represent saprotrophs exploiting the already dead moth tissue.…”

Section: Field Experimentsmentioning

confidence: 70%

“…These fungi were especially common in the field experiment, often accompanying a species of the Cordycipitaceae. Therefore, we may consider such fungi to primarily take advantage of pupae killed by other pathogens, but it cannot by any means be excluded that some of these may still possess thus far unrecognized opportunistic abilities to cause the death of the insects (see [24]). Further studies are needed to establish the nutritional strategies of fungi that are repeatedly found on dead insects.…”

Section: Discussionmentioning

confidence: 99%

“…While present each year, it was the most prevalent entomopathogen in 2015 and 2016. Species from other families should be considered potential (opportunistic) pathogens of Lepidoptera as most of them belong to large genera including saprotrophs and pathogens of various hosts, with some representatives occasionally found also on insects [23][24][25]. There are exceptions from this general scheme, however.…”

Section: Fungi From the Laboratory Experiments And Their Prevalencementioning

confidence: 99%

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Fungi Recorded on Folivorous Lepidoptera: High Diversity Despite Moderate Prevalence

Gielen

Meister

Tammaru

et al. 2021

JoF

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The knowledge about the diversity and ecological role of entomopathogenic fungi is primarily based on agroecosystems whereas information derived from natural insect populations is much more limited. To contribute to filling this gap, we recorded the prevalence of fungal infections in laboratory rearing experiments with five species of Lepidoptera, and in a field rearing experiment including one of these moths. The diversity of detected fungi was found to be high; we isolated 25 species of fungi from insects that had died in the course of these experiments. Six species belonged to the family Cordycipitaceae known to include unambiguous insect pathogens. The trophic niche of the representatives of other taxa is less clear and requires further studies. Regarding the most abundant species, Cordyceps farinosa, in which this question could be addressed, there was no indication of specialization on particular insect hosts, whereas several of the less common species may have been recorded from lepidopteran hosts for the first time. Across the subsets of the data, the prevalence of fungal infections generally remained below 5%. Our results are thus consistent with the idea that entomopathogenic fungi are always present in insect populations but rarely reach epizootic levels. The detected species richness shows that much is to be gained from mapping the diversity of fungal species associated with folivorous insects in natural populations.

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“…As Chinese chives and garlic were already tested as an intercrop for the control of N. bilobata, a new pest species in Brazilian strawberry crops [7], this approach may be tested for other pests, such as Drosophila suzukii Matsumura and Duponchelia fovealis Zeller, species with a high potential for causing damage to strawberry. Future studies may also combine sustainable management practices, such as the reduction of the source of fertilization to optimal levels [38,39], use of low impact insecticides and entomopathogenic agents [38,40,41], and incorporation of plants that maintain or enhance natural enemy populations in the crop production landscape [42,43], to build an organic strawberry production protocol that may be used even for conventional strawberry growers or incorporated into others IPM crop protocols.…”

Section: Discussionmentioning

confidence: 99%

Plant Acceptance for Oviposition of Tetranychus urticae on Strawberry Leaves Is Influenced by Aromatic Plants in Laboratory and Greenhouse Intercropping Experiments

et al. 2020

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The objective was to evaluate aromatic plants’ effects on the acceptance, preference, egg load, and life span of females of the twospotted spider mite (TSSM) in laboratory experiments and TSSM population under aromatic plants’ intercropping in greenhouse experiments. The pseudofruits production was also evaluated. For the laboratory, basil’s, Chinese chives’, chives’, and garlic’s influence on TSSM were tested on strawberry leaves. Four laboratory experiments were conducted: (1) Multiple choice test; (2) T-shaped arena test; (3) host–plant acceptance on aromatic plant or strawberry leaves; and (4) performance of TSSMs on strawberry leaves under aromatic plant influence. For the greenhouse experiments, assessments of the TSSM populations were realized by observing TSSM with a 10× magnifying glass on strawberry leaves in a monocrop or intercropped with Chinese chives, chives, garlic, or onion. Pseudofruit production was evaluated. Our results show that strawberry leaves were strongly preferred by TSSM. The T-shaped arena test revealed that all aromatic plants repel the TSSM. The test with the performance of TSSM females revealed that aromatic plants affected the mite’s biological parameters. Chinese chives reduced the number of eggs laid per day by 33.22%, whereas garlic reduced the number by 17.30% and chives reduced it by 12.46%. The total number of eggs was reduced by 34.79% with Chinese chives and 25.65% with garlic. Greenhouse experiments showed that chives reduced TSSM populations on two cycles and Chinese chives and garlic reduced TSSM populations on the first cycle only. With our findings, we suggest that Chinese chives, chives, and garlic are the primary candidates for intercropping use against TSSM. Chinese chives and garlic reduced the total number of eggs, but only garlic reduced female mite longevity. However, none of the intercropping plants improved strawberry pseudofruit production.

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Fungi isolated from insects in strawberry crops act as potential biological control agents of Duponchelia fovealis (Lepidoptera: Crambidae)

Cited by 26 publications

References 35 publications

Compatibility between Entomopathogenic Fungi and Egg Parasitoids (Trichogrammatidae): A Laboratory Study for Their Combined Use to Control Duponchelia fovealis

Compatibility between Entomopathogenic Fungi and Egg Parasitoids (Trichogrammatidae): A Laboratory Study for Their Combined Use to Control Duponchelia fovealis

Fungi Recorded on Folivorous Lepidoptera: High Diversity Despite Moderate Prevalence

Plant Acceptance for Oviposition of Tetranychus urticae on Strawberry Leaves Is Influenced by Aromatic Plants in Laboratory and Greenhouse Intercropping Experiments

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