Revista Brasileira de Entomologia (2008) 52, 472-476

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Patrik Luiz Pastori, Lino Bittencourt Monteiro and Marcos Botton (2008)
Biologia e exigências térmicas de Trichogramma pretiosum Riley (Hymenoptera, Trichogrammatidae) "linhagem bonagota" criado em ovos de Bonagota salubricola (Meyrick) (Lepidoptera, Tortricidae)
[Biology and thermal requirements of Trichogramma pretiosum Riley (Hymenoptera, Trichogrammatidae) "strain bonagota" on eggs of Bonagota salubricola (Meyrick) (Lepidoptera, Tortricidae)]
Revista Brasileira de Entomologia 52 (3), 472-476
Abstract: The biology of Trichogramma pretiosum Riley (Hymenoptera, Trichogrammatidae) "strain bonagota" reared in eggs of Bonagota salubricola (Meyrick) (Lepidoptera, Tortricidae) was studied in laboratory estimating the thermal requirements and the number of annual generations in some apple production regions of the Rio Grande do Sul and Santa Catarina States. Eggs of B. salubricola were submitted to parasitism by T. pretiosum for 24h, and transferred to incubators regulated to 18, 20, 22, 25, 28, 30 and 32ºC. The duration of the biological cycle (egg-adult) was influenced by temperature ranging from 8.18 to 18.12 days at 32 and 18°C, respectively. The parasitoid emergency was higher (66.2%) at 22°C. The sex ratio of T. pretiosum ranged from 0.61 to 0.72 being not influenced by temperature. The highest relation of parasitoids/egg was found at 30°C (1.41). The thermal constant (k) and the threshold temperature (Tb) was 187.7 degrees days and 7.42ºC, respectively. The number of annual generations estimated for T. pretiosum for Fraiburgo and São Joaquim, SC and Vacaria, RS was 17.5; 11.6 and 16.8, respectively.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
(original language: Portuguese)
Full text of article
Database assignments for author(s): Lino Bittencourt Monteiro, Marcos Botton

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
general biology - morphology - evolution
population dynamics/epizootiology

Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.


Bonagota salubricola Apple (Malus) Brazil (south)
Trichogramma pretiosum (parasitoid) Bonagota salubricola Apple (Malus) Brazil (south)
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