Performance of trichogrammatids as biocontrol agents of Pseudoplusia includens Walker (Lepidoptera: Noctuidae)

This research aimed to point out the most suitable trichogrammatid strains to control the soybean looper Pseudoplusia includes Walker. Biological parameters and parasitism ratio of 11 Trichogramma pretiosum Riley, one Trichogramma atopovirilia Oatman & Platner and one Trichogrammatoidea annulata...

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Bibliographic Details
Published in:Neotropical entomology 2009-05, Vol.38 (3), p.389-entomol
Main Authors: Bueno, Regiane C O F, Parra, José R P, de F Bueno, Adeney, Haddad, Marinéia L
Format: Article
Language:por ; eng
Subjects:
Animals
Hymenoptera - physiology
Lepidoptera
Noctuidae
Pest Control, Biological - methods
Pseudoplusia
Pseudoplusia includens
Trichogramma atopovirilia
Trichogramma pretiosum
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Summary:This research aimed to point out the most suitable trichogrammatid strains to control the soybean looper Pseudoplusia includes Walker. Biological parameters and parasitism ratio of 11 Trichogramma pretiosum Riley, one Trichogramma atopovirilia Oatman & Platner and one Trichogrammatoidea annulata De Santis strains reared on P. includens eggs were evaluated. Among all tested strains/species, T. pretiosum strain RV, collected in Rio Verde, GO, had the fastest development cycle and the highest percentage of parasitism of P. includens eggs. There was no difference in the parasitism and in the number of parasitoid emerged per egg among the tested parasitoid species and strains. Accordingly to the cluster analysis, T. pretiosum strain RV reared on P. includens eggs had the best performance. Considering the higher parasitism rate, shorter biological cycle, higher survival and sex ratio, T. pretiosum strain RV is the most appropriated to be used in field releases aiming at P. includens control.
ISSN:1519-566X
1678-8052
DOI:10.1590/S1519-566X2009000300015