Behavior and generation times of Bracon brevicornis (Wesmael) (Hymenoptera:Bracondae) reared on Pectinophora gossypiella (Saunders) (Lepidoptera: Gelechiidae) and Galleria mellonella (Lepidoptera: Pyralidae)

Kandil, Mervat A.; Moustafa, Hemat Z.; Lotfy, Dalia E.

doi:10.1007/s42690-020-00312-7

Cited by 2 publications

(3 citation statements)

References 15 publications

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“…The parasitoid produced good paralysing and parasitism abilities when it was grown on P. gossypiella or E. insulana. Furthermore, the computed biological characteristics revealed that P. gossypiella hosts appear to be a better host for B. brevicornis development and multiplication than G. mellonella hosts (Kandil et al 2021). The effect of the two insecticide treatments on some biological and biochemical characteristics of the hosts, P. gossypiella and E. insulana, and the parasitoid B. brevicornis grown on the treated hosts, resulting in a reduction in adult parasitoid outcomes (Kandil & Moustafa 2019).…”

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

“…Female B. brevicornis stings the host on the ventral side, inserts maternal factors to paralyse it and then lays a large number of eggs, which the larva consumes (Antolin et al 1995;Qian et al 2013;Quicke 2015). The parasitoid's development varies depending on the host it is nurtured on (host size, diet, and environmental conditions) (Landge et al, 2009;Khan et al 2016;Pan et al 2017;Kandil et al 2021).…”

Section: Introductionmentioning

confidence: 99%

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Impact of Some Gamma-Irradiated Hosts on Bracon Brevicornis Wesmael Parasitism and Production

2023

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The purpose of this study was to evaluate how irradiated hosts affected the mass rearing of the ectoparasitoid Bracon brevicornis Wesmael. To investigate the development of B. brevicornis stages on three hosts; full-grown larvae of Pectinophora gossypiella, Galleria mellonella, and Spodoptera litoralis were irradiated with 100, 200, and 300 Gy. The use of 100Gy in irradiating P. gossypiella and G. mellonella produced utilization in promoting parasitism and adult emergence of B. brevicornis, with parasitism percentages of 77.00% and 80.00% for P. gossypiella and G. mellonella, respectively, when compared to control larvae or other irradiated doses. The results of the biochemical experiments showed that G. mellonella > P. gossypiella > S. littoralis was the order of the insects in terms of total protein, lipids, and glucose. It could be concluded that using 100Gy irradiated P. gossypiella and G. mellonella larvae would aid in improving B. brevicornis mass production and the effectiveness of B. brevicornis.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Impact of Some Gamma-Irradiated Hosts on Bracon Brevicornis Wesmael Parasitism and Production

2023

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Making a healthy choice: Tactical host selection behaviour of a parasitoid wasp

Sasidharan,

Ghosh,

Venkatesan

2024

Ecological Entomology

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Host selection behaviour plays a pivotal role in determining the success of parasitoids, especially in environments where host quality varies. In heterogeneous environments, parasitoids frequently encounter hosts that are infected. We conducted experiments to ascertain whether the ecto‐parasitoid Bracon brevicornis can differentiate between healthy caterpillars and those infected with Bacillus thuringiensis (Bt) and examined the implications of this host selection behaviour. In an olfactometer choice assay, B. brevicornis avoided Bt‐infected Spodoptera litura hosts. In a no‐choice assay, the female parasitoid displayed a lower paralysis rate on infected hosts, indicating a strong selection behaviour. Furthermore, we explored the impact of infection duration by exposing female wasps to larvae infected for 24, 48 and 72 h with Bt. Both choice and no‐choice assays demonstrated that female B. brevicornis refrains from ovipositing on infected larvae, regardless of the infection duration. Direct exposure to Bt through consumption did not affect the fitness of the tested parasitoid wasp. However, post‐24‐h Bt infection, host larvae showed an increased total hemocyte density, particularly high phagocytic cell numbers, and enhanced melanization, rendering the host larva unsuitable for parasitoid development. Taken together, our study underscores that parasitoids exhibit robust host selection behaviour by actively avoiding infected hosts. This insight is valuable for devising new pest control strategies in agriculture that safeguard beneficial parasitoids.

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Behavior and generation times of Bracon brevicornis (Wesmael) (Hymenoptera:Bracondae) reared on Pectinophora gossypiella (Saunders) (Lepidoptera: Gelechiidae) and Galleria mellonella (Lepidoptera: Pyralidae)

Cited by 2 publications

References 15 publications

Impact of Some Gamma-Irradiated Hosts on Bracon Brevicornis Wesmael Parasitism and Production

Impact of Some Gamma-Irradiated Hosts on Bracon Brevicornis Wesmael Parasitism and Production

Making a healthy choice: Tactical host selection behaviour of a parasitoid wasp

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