Revista Brasileira de Entomologia (2003) 47, 205-209
Eduardo B. Beserra and José R.P. Parra (2003)
Comportamento de parasitismo de Trichogramma atopovirilia Oatman and Platner e Trichogramma pretiosum Riley (Hymenoptera, Trichogrammatidae) em posturas de Spodoptera frugiperda (J. E. Smith) (Lepidoptera, Noctuidae)
[Parasitism behavior of Trichogramma atopovirilia Oatman and Platner and Trichogramma pretiosum Riley (Hymenoptera, Trichogrammatidae) in Spodoptera frugiperda (J. E. Smith) (Lepidoptera; Noctuidae) egg masses]
Revista Brasileira de Entomologia 47 (2), 205-209
Abstract: The parasitism behavior of Trichogramma atopovirilia and T. pretiosum in Spodoptera frugiperda eggs was evaluated focusing on the features related to the associative learning (alpha conditioning) and recognition of the egg parasitized by the female after the first oviposition experience. Females of both species were observed to recognize the parasitized egg, which takes place after the female drills into the host egg. Following oviposition, 43.59% and 67.53 of females began to feed with an average feeding time of 73.26 ± 11.57 and 64.04 ± 7.05 seconds for T. atopovirilia and T. pretiosum, respectively. The time elapsed in each step of the parasitism behavior significantly decreased after the first oviposition experience, with a trend to stabilize after the 2nd or 3rd egg parasitized, indicating associative learning in these Trichogramma species.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
(original language: Portuguese)
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Database assignments for author(s): Eduardo B. Beserra
Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
general biology - morphology - evolution
Pest and/or beneficial records:
| Beneficial | Pest/Disease/Weed | Crop/Product | Country | Quarant.
|
|---|---|---|---|---|
| Spodoptera frugiperda | ||||
| Trichogramma pretiosum (parasitoid) | Spodoptera frugiperda | |||
| Trichogramma atopovirilia (parasitoid) | Spodoptera frugiperda |
