Revista Brasileira de Entomologia (2011) 55, 129-133
Maria Mirmes Paiva Goulart, Adeney de Freitas Bueno, Regiane Cristina Oliveira de Freitas Bueno and Adenil Ferreira Diniz (2011)
Host preference of the egg parasitoids Telenomus remus and Trichogramma pretiosum in laboratory
Revista Brasileira de Entomologia 55 (1), 129-133
Abstract: Host preference of the egg parasitoids Telenomus remus and Trichogramma pretiosum in laboratory. This research aimed to evaluate the host preference of the egg parasitoids Telenomus remus and Trichogramma pretiosum. Trials were carried out in laboratory, under controlled environmental conditions (25 ± 2ºC temperature; 70 ± 10% RH; and 14 h photophase). The parasitoid searching behavior was evaluated based on the distribution (%) of eggs parasitized by each parasitoid, on egg masses of each host species. Results showed the host preference of T. remus by Spodoptera cosmioides eggs. T. pretiosum, reared in A. gemmatalis eggs, choose to parasitize always eggs of the host where the parasitoid had been reared. The egg preference was not observed when T. pretiosum was reared in S. frugiperda eggs. These results show that, in general, host preference of T. remus is less influenced by the host where it is developed than T. pretiosum. Host preference is an important parameter for biological control programs because more than one pest species may occur in the field, different from those where they were reared in the laboratory.
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Database assignments for author(s): Adeney de Freitas Bueno
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.
|
|---|---|---|---|---|
| Anticarsia gemmatalis | ||||
| Spodoptera cosmioides | ||||
| Trichogramma pretiosum (parasitoid) | Anticarsia gemmatalis | |||
| Telenomus remus (parasitoid) | Spodoptera cosmioides |
