Aphidoletes aphidimyza (Diptera: Cecidomyiidae). The aphid midge, Aphidoletes aphidimyza, is a cecidomyiid fly whose larvae are effective predators of aphids. Aphidoline biological control agent contains the predatory midge, Aphidoletes aphidimyza. This voracious midge lays its eggs in colonies of aphids, and the. Aphidoletes aphidimyza is gall midge whose larvae feed on over 60 different species of aphids. These gall midges are mainly used to control aphid colonies.
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Adult aphids for all experiments were selected directly from colonies, and were therefore of unknown age. Dipt, Syrphidae Norsk Entomol. The dashed line represents the level of aphid infestation at the aphidoletees of the experiment.
Life table parameters and oviposition dynamics of various populations of the predacious gall-midge Aphidoletes aphidimyza. These organs may be viewed as a lower-value oviposition site by this the midge, possibly due to the transient nature of flowers pansy flowers only lasting a few days.
Based on previous experiments, starting densities would result in ca. Thus, higher rates, or multiple releases, of A. In addition, larvae kill more aphids than they consume. Jandricic and Stephen P. Many species of aphids. L and Metcalf, R.
Although our research suggests that some control of A. Aphid predatory Midge responds to cool temperature and shortening day lengths less than 16 hrs by entering diapause like a hibernation statethere in most greenhouse they are only active from March to September unless supplemental lighting is used.
Additionally, for both aphid prey species, distribution of eggs deposited later in the experiment were similar to those deposited in the first 48 h Figure 2. Conservation Aphid midges are native to much of North America and will overwinter, although apphidimyza mortality may be high. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution CC-BY license http: Though numbers of A. At all plant stages, aphid species had a significant effect on the number of predator eggs laid.
Discussion This study demonstrated aphicoletes, even when using a polyphagous aphid predator, differential control between greenhouse aphid species is possible.
Pansies were generally free of any additional ornamental pests e. As individuals of A. Pansy crop stages tested included vegetative, budding, and flowering produced under natural day length.
To increase relative humidity RH to promote oviposition see [ 28 ]mist emitters, located beneath each bench, were operated for 5 min of every 60 min for the duration of the experiment. Reporting of percent control in our study is somewhat arbitrary, since it depends on a comparison of the treatment population to an untreated control, and is heavily affected by the intrinsic rate of increase of the aphid species in question higher r m giving a greater impression of control.
Aulacorthum solaniMyzus persicaebiological control in greenhouses, predator prey interactions, plant strata, prey preference.
Interestingly, this phenomenon can be mediated by preferred feeding locations of different prey species, aphidinyza than an inherent preference of the natural enemy for one prey type over another. Plants were in the following stages of growth: Percent control of each aphid species is also presented; A2,B2,C2 Comparison between aphid species on predator-treated plants aphidolete the end of the experiments means and SE presented.
Average temperatures in the research greenhouse compartments from the point of A. Developmental times and life table statistics of the Aulacorthum solani Hemiptera: In all cases, conditions in the cage were extremely close to ambient conditions in the greenhouse, and aphidoletds are not reported separately. Aphid suitability and its relationship to oviposition preference in predatory hoverflies. The use of biological control in Canadian greenhouse crops.