Desenvolvimento de dietas artificiais liofilizadas para Euschistus heros (Fabricius, 1798), com vistas à produção de Telenomus podisi (Ashmead, 1893) e Trissolcus basalis (Wollaston, 1858)

Mendoza, Agustín Cerna

doi:10.11606/t.11.2012.tde-26032012-104048

Cited by 1 publication

(2 citation statements)

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“…The artificial diets, especially AD2 with fresh eggs (T5), showed better results than the natural diet, contradicting other studies in which artificial diets did not influence the evaluated parameters of T. podisi [16,47]. Viability and sex ratio had better results with fresh eggs than cryopreserved eggs, possibly due to small changes in the physical-nutritional characteristics caused by low temperatures, causing females to prefer fresh eggs [20].…”

Section: Discussionmentioning

confidence: 83%

“…These data emphasize the importance of studies on the influence of eggs from hosts reared with artificial diets in the production of parasitoids. Possibly, eggs from artificial diets had superior nutritional quality, resulting in greater parasitism under stressful conditions (thermal extremes), which has not been reported in other studies with artificial diets that examined the biology of T. podisi [16,47]. Future host preference tests and field bioassays should be carried out, in addition to the analysis of egg nutrition, influenced by diet and storage.…”

Section: Discussionmentioning

confidence: 91%

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Optimizing Mass Rearing of the Egg Parasitoid, Telenomus podisi, for Control of the Brown Stink Bug, Euschistus heros

Parra

Carvalho

Hoback

et al. 2023

Insects

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The parasitoid Telenomus podisi Ashmead, 1893 is used in biological control programs in Brazil against eggs of Euschistus heros (Fabricius, 1798), a key pest of soybean, Glycine max (L.) Merr. To optimize the mass production of parasitoids, artificial diets and storage of host eggs at low temperatures have been developed; however, direct comparisons of the effects of these conditions have not occurred. We assessed a double factorial arrangement composed of six treatments (fresh or cryopreserved E. heros eggs from adults fed on natural or two artificial diets). We evaluated the biological characteristics and parasitism capacity of T. podisi produced from these treatments across seven temperatures. The thermal range between 21 and 30 °C resulted in satisfactory daily parasitism in all treatments tested, with an inverse relationship between temperature and female survival. The best parasitoid biological parameters were found between 21 and 27 °C, where all tested diets supported T. podisi development, with the best results from artificial diets. Fresh eggs and those frozen in liquid nitrogen and stored at −196 °C until use supported parasitoid development. These results suggest that the best method to mass rear T. podisi is to use artificial diets to rear E. heros and store eggs until needed, and then rear parasitoids at 24 °C.

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Section: Discussionmentioning

confidence: 83%

Section: Discussionmentioning

confidence: 91%