Journal of Applied Entomology - Zeitschrift für angewandte Entomologie (2001) 125, 463-467

From Pestinfo-Wiki
Jump to: navigation, search

Q. Wang and G. Shi (2001)
Host preference and sex allocation of three hymenopteran parasitoid species (Ichneumonidae and Braconidae) of a longicorn pest, Oemona hirta (Fabr.) (Col., Cerambycidae)
Journal of Applied Entomology - Zeitschrift für angewandte Entomologie 125 (8), 463-467
Abstract: The host preference and sex allocation of two ichneumond parasitoids, Xanthocryptus novozealandicus (Dalla Torre) and Campoplex sp., and one braconid parasitoid, Aspicolpus hudsoni Turner of the longicorn borer, Oemona hirta, were studied in New Zealand. The size of the borer larvae attacked by the parasitoids can be determined by measuring the gallery width of the borers. These parasitoids are idiobionts and their secondary sex ratio is female-biased. Females of these species are significantly larger than males, and the females allocate the sex of offspring depending on the size of host larvae, by laying female-producing eggs on significantly larger host larvae. Xanthocryptus novozealandicus is larger in body size and shorter in ovipositor length than Campoplex sp. and A. hudsoni, and consumes late instar larvae or prepupae in shallow galleries whereas the latter two utilize early to middle instar larvae in deep galleries. Campoplex sp. and A. hudsoni preferred host larvae in significantly larger tree twigs than X. novozealandicus.
(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): Qiao Wang

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
general biology - morphology - evolution
environment/habitat manipulation

Pest and/or beneficial records:

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


Oemona hirta New Zealand
Xanthocryptus novozealandicus (parasitoid) Oemona hirta New Zealand
Aspicolpus hudsoni (parasitoid) Oemona hirta New Zealand
Retrieved from "https://wiki.pestinfo.org/w/index.php?title=Journal_of_Applied_Entomology_-_Zeitschrift_für_angewandte_Entomologie_(2001)_125,_463-467&oldid=55530"