2022
DOI: 10.1590/1519-6984.263443
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Abstract: Parasitoids control insect pests, but their number per host affects their efficiency. The objective of this work was to evaluate the best density of Tetrastichus howardi (Olliff, 1893) (Hymenoptera: Eulophidae) individuals parasitizing fourth instar Plutella xylostella (Linnaeus, 1758) (Lepidoptera: Plutellidae) larvae in greenhouse conditions. These larvae were exposed to parasitism by T. howardi females with 1:1, 3:1, 6:1, 9:1, 12:1, 15:1 and 18:1 parasitoid/host ratios with 10 replications during 96 hours. … Show more

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Cited by 2 publications
(1 citation statement)
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“…Females parasitize the host pupae inside the sugarcane stalk (Barbosa et al, 2019; Kfir et al, 1993), fulfil development and accomplish parasitism when reared at temperature regimes between 18 and 34°C (Yan et al, 2021). Tetrastichus howardi can be reared in insectaries using pupae of different species of lepidopteran (Barbosa et al, 2015; Pereira et al, 2022; Piñeyro et al, 2016) and pupae of the yellow mealworm Tenebrio molitor (L.) (Coleoptera: Tenebrionidae) (Barbosa et al, 2019; Tiago et al, 2019; Vargas et al, 2011), produced at low‐cost diets. According to Machado et al (unpublished data), one pupa of T. molitor generates an average of 130.5 parasitoids at ≈0.00022 US dollars per parasitoid produced, which allows the release of the 67,000 parasitoids recommended to manage a high infestation of sugarcane stalk borers at 17.78 US dollars per hectare.…”
Section: Introductionmentioning
confidence: 99%
“…Females parasitize the host pupae inside the sugarcane stalk (Barbosa et al, 2019; Kfir et al, 1993), fulfil development and accomplish parasitism when reared at temperature regimes between 18 and 34°C (Yan et al, 2021). Tetrastichus howardi can be reared in insectaries using pupae of different species of lepidopteran (Barbosa et al, 2015; Pereira et al, 2022; Piñeyro et al, 2016) and pupae of the yellow mealworm Tenebrio molitor (L.) (Coleoptera: Tenebrionidae) (Barbosa et al, 2019; Tiago et al, 2019; Vargas et al, 2011), produced at low‐cost diets. According to Machado et al (unpublished data), one pupa of T. molitor generates an average of 130.5 parasitoids at ≈0.00022 US dollars per parasitoid produced, which allows the release of the 67,000 parasitoids recommended to manage a high infestation of sugarcane stalk borers at 17.78 US dollars per hectare.…”
Section: Introductionmentioning
confidence: 99%