Journal of Applied Entomology (2005) 129, 437-442

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W.H. Jenner, U. Kuhlmann, J.E. Cossentine and B.D. Roitberg (2005)
Reproductive biology and small-scale rearing of cherry bark tortrix and its candidate biological control agent
Journal of Applied Entomology 129 (8), 437-442
Abstract: The larval parasitoid, Campoplex dubitator (Hym.,: Ichneumonidae), is under consideration as an agent for classical biological control of cherry bark tortrix (CBT), Enarmonia formosana (Lep.,: Tortricidae), in North America. A comprehensive risk analysis of the candidate agent will require prosperous cultures of both the pest and its parasitoid. We present a rearing method for small-scale production of both species using a bean-based artificial diet, with additional information on the reproductive biology of C. dubitator. Based on estimated survivorship probabilities, a CBT egg had a 70% chance of developing completely to the adult stage under this system. The success of parasitism, however, was very dependent on the instar of the CBT host larva at the time of oviposition. All parasitised first instar larvae died shortly after the attack, rendering them unsuitable for oviposition, while 50% of parasitised second instar larvae died prematurely. In contrast, early mortality was 15-30% for larvae parasitised in the third to fifth instars. Regardless of the instar at oviposition, approximately 90% of the surviving hosts yielded parasitoids, showing a high acceptance by C. dubitator of second to fifth instars for oviposition.
(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): Ulrich Kuhlmann, Joan E. Cossentine

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
rearing/culturing/mass production
Research topic(s) for beneficials or antagonists:
general biology - morphology - evolution
rearing/culturing/mass production

Pest and/or beneficial records:

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


Enarmonia formosana
Campoplex dubitator (parasitoid) Enarmonia formosana
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