Annals of the Entomological Society of America (2014) 107, 826-831

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Isabel M. Silva, Teresinha V. Zanuncio, José M.M. Pereira, Carlos F. Wilcken, Fabricio F. Pereira, José E. Serrão and José C. Zanuncio (2014)
Density of Trichospilus diatraeae (Hymenoptera: Eulophidae) parasitizing Diaphania hyalinata (Lepidoptera: Crambidae) pupae
Annals of the Entomological Society of America 107 (4), 826-831
Abstract: Diaphania hyalinata L. (Lepidoptera: Crambidae) is a key pest of plants in the family Cucurbitaceae, defoliating and reducing photosynthetic area and yield. Trichospilus diatraeae Margabandhu and Cherian, 1942 (Hymenoptera: Eulophidae) parasitizes the pupae of this pest, but its biological and reproductive parameters with this host are unknown. The objective of our study was to characterize the reproduction of T. diatraeae in D. hyalinata pupae with different densities of this parasitoid. Individual D. hyalinata pupae (48 h old) were exposed to different densities of T. diatraeae (1:1, 4:1, 8:1, 12:1, 16:1, 20:1, and 24:1). The parasitoid density did not affect the parasitism and emergence rate of this natural enemy. The progeny, sex ratio, longevity, and head capsule width of T. diatraeae males and females decreased with increasing density, and its life cycle was proportional to density increase of T. diatraeae. Densities of up to eight T. diatraeae individuals per D. hyalinata pupae are favorable for the development of this parasitoid.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): José Cola Zanuncio, José Eduardo Serrao, Carlos Frederico Wilcken, Fabricio F. Pereira

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.


Diaphania hyalinata
Trichospilus diatraeae (parasitoid) Diaphania hyalinata
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