Small-scale rearing of Anagasta kuehniella for Trichogramma production

doi:10.1079/.0000

2021

DOI: 10.1079/.0000

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Small-scale rearing of Anagasta kuehniella for Trichogramma production

Abstract: This book contains 4 chapters focusing on techniques for small-scale rearing of the egg parasitoids Trichogramma spp. in the factitious host Anagasta kuehniella [Ephestia kuehniella]. These parasitoids are among the most widely used natural enemies in the world, and in Brazil are used to control lepidopteran pests in a wide variety of crops.

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Cited by 4 publications

References 32 publications

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Biology and quality assessment ofTelenomus remus(Hymenoptera: Scelionidae) andTrichogrammaspp. (Hymenoptera: Trichogrammatidae) in eggs ofSpodopteraspp. for augmentative biological control programs

Fortes,

Coelho,

Amorim

et al. 2023

Journal of Insect Science

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The Spodoptera complex of the family Noctuidae, represented here by S. frugiperda (J.E. Smith), S. eridania (Stoll), S. albula (Walker), and S. cosmioides (Walker), is an important group of crop pests in Brazil. Spodoptera frugiperda and S. eridania are invasive in Africa, and the former also in Asia and Oceania. The egg parasitoids Telenomus remus Nixon (Hymenoptera: Scelionidae) and Trichogramma spp. (Hymenoptera: Trichogrammatidae) are potential control agents for field use against these noctuids. We evaluated the parasitism efficiency, development, and flight capacity of an isofemale line and a regular line of T. remus, and 2 genetically variable populations of Trichogramma pretiosum Riley and Trichogramma atopovirilia Oatman and Platner (Hymenoptera: Trichogrammatidae) in these 4 members of the Spodoptera complex. All parasitoids were able to develop in the 4 hosts. The parasitoids showed good flight capacity, except for the regular line of T. remus. The Trichogramma species, despite having high viability and female:male sex ratios, showed poorer parasitism performances than T. remus. The regular T. remus line also showed good parasitism capacity and high viability but had a predominance of males. In general, the isofemale line of T. remus showed good rates of parasitism and flight capacity as well as a high viability and sex ratio, proving to be a potential candidate for an augmentative biological-control program for Spodoptera spp Guenée (Lepidoptera: Noctuidae).

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Biology and quality assessment ofTelenomus remus(Hymenoptera: Scelionidae) andTrichogrammaspp. (Hymenoptera: Trichogrammatidae) in eggs ofSpodopteraspp. for augmentative biological control programs

Fortes,

Coelho,

Amorim

et al. 2023

Journal of Insect Science

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Lipid‐rich diets increase parasitism by the parasitoidTrichogramma pretiosum

Raynard

Coelho

Deschamps

et al. 2023

Entomologia Exp Applicata

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Lipids have been little investigated as food for adult insects, considering the importance of these macronutrients for development and reproduction. Lipid reserves are essential for oogenesis and somatic functions. Through host‐feeding, parasitoid females obtain essential nutrients, including lipids used in reproduction. The present study determined the lipid profile of Anagasta kuehniella (Zeller) (Lepidoptera: Pyralidae), a factitious host of Trichogramma parasitoid wasps, and evaluated whether the fertility of the parasitoid was increased by supplementing its diet with oils having a lipid profile similar to that of the host. Females of Trichogramma pretiosum Riley (Hymenoptera: Trichogrammatidae) fed continuously with a diet composed of 90% honey and 10% vegetable oil, mixed in a water bath at 70 °C, parasitized significantly more eggs (11–18%) than did females fed only with pure honey. However, addition of the oil reduced the longevity of these wasps by 40% compared to the controls fed with pure honey. The oil‐enriched diet did not affect the flight performance and quality of the offspring. This information on the use and allocation of lipid reserves in T. pretiosum will help to increase the parasitism capacity of this important biocontrol agent, when produced by mass rearing.

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Biological control of fall armyworm Spodoptera frugiperda (JE Smith) using egg parasitoids, Trichogramma species (Hymenoptera: Trichogrammatidae): a review

Navik,

Yele,

Kedar

et al. 2023

Egypt J Biol Pest Control

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Background Fall armyworm (FAW), Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae), is an invasive pest that can cause serious crop loss to various important food crops and risk to global food security. FAW can cause damage to over 350 plant species by feeding on vegetative and reproductive stages of crops. Currently, chemical pesticides and transgenic maize are widely used to safeguard crops from this serious pest. However, biological control is a safer and more sustainable alternative in the long term for FAW management. Of the various natural enemies of FAW, egg parasitoids of genus Trichogramma have been used in augmentative biological control of FAW in the Americas and invaded regions such as Africa and Asia. Main body Several species of Trichogramma have been reported naturally parasitizing FAW eggs and emerged as important biocontrol agents. This paper presents a comprehensive review of potential and challenges associated with Trichogramma in biological control of FAW. A total of 11 species of trichogrammatids occurred naturally on FAW eggs. This review includes the occurrence of Trichogramma species on FAW, biological attributes, mass rearing, release techniques, field efficacy and interaction and integration with other parasitoids. Integration of Trichogramma with other parasitoids can resolve the problem related to its penetrative ability against scaled and multi-layered FAW eggs which were discussed. Conclusion Invasion of FAW in Africa and Asia has provided a prospect for augmentative biological control of FAW using Trichogramma for sustainable production, especially in maize which is used as food and fodder. Integrating Trichogramma with safer and selective green pesticides and their conservation with other natural enemies could help in sustainable and environment-friendly FAW control.

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Small-scale rearing of Anagasta kuehniella for Trichogramma production

Cited by 4 publications

References 32 publications

Biology and quality assessment ofTelenomus remus(Hymenoptera: Scelionidae) andTrichogrammaspp. (Hymenoptera: Trichogrammatidae) in eggs ofSpodopteraspp. for augmentative biological control programs

Biology and quality assessment ofTelenomus remus(Hymenoptera: Scelionidae) andTrichogrammaspp. (Hymenoptera: Trichogrammatidae) in eggs ofSpodopteraspp. for augmentative biological control programs

Lipid‐rich diets increase parasitism by the parasitoidTrichogramma pretiosum

Biological control of fall armyworm Spodoptera frugiperda (JE Smith) using egg parasitoids, Trichogramma species (Hymenoptera: Trichogrammatidae): a review

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