| seasonal abundance of resident parasitoids and predatory flies and corresponding soybean aphid densities, with comments on classical biological control of soybean aphid in the midwest. | seasonal abundance of resident parasitoids and predatory flies, and corresponding soybean aphid, aphis glycines matsumura (hemiptera: aphididae), densities were assessed in soybean fields from 2003 to 2006 at two locations in lower michigan. six parasitoid and nine predatory fly species were detected in 4 yr by using potted plants infested with soybean aphid placed in soybean fields. the parasitoid lysiphlebus testaceipes cresson (hymenoptera: braconidae) and the predatory flies aphidoletes aphi ... | 2008 | 18459389 |
| habitat affinity of resident natural enemies of the invasive aphis glycines (hemiptera: aphididae), on soybean, with comments on biological control. | we integrated a natural enemy survey of the broader landscape into a more traditional survey for aphis glycines matsumura (hemiptera: aphididae), parasitoids and predatory flies on soybean using a. glycines-infested soybean, glycine max (l.) merr., placed in cropped and noncropped plant systems to complement visual field observations. across three sites and 5 yr, 18 parasitoids and predatory flies in total (hymenoptera: aphelinidae [two species] and bracondae [seven species], diptera: cecidomyii ... | 2010 | 20568602 |
| target host finding by steinernema feltiae and heterorhabditis bacteriophora in the presence of a non-target insect host. | the ability of steinernema feltiae or heterorhabditis bacteriophora infective juveniles (ij), when applied to the soil surface, to infect a galleria mellonella larva at the base of a soil-filled cup (276 cm(3)) was evaluated in the presence and absence of 100 larvae of a non-target insect, the aphid midge aphidoletes aphidimyza, near the soil surface. in all four trials with either s. feltiae or h. bacteriophora, a. aphidimyza presence did not affect the number of ij finding and infecting a g. m ... | 2004 | 19262818 |
| an attractant of the aphidophagous gall midge aphidoletes aphidimyza from honeydew of aphis gossypii. | many natural enemies of insects use honeydew as a volatile cue to locate hosts or prey, as an oviposition stimulant, and as an arrestant for foraging. the aphidophagous gall midge aphidoletes aphidimyza (rondani) (diptera: cecidomyiidae) has predacious larval stages and can be used to control aphid populations, especially in greenhouses. previous studies have shown that the honeydew, excreted by the aphid myzus persicae, attracts a. aphidimyza, but the crucial attractants have not been identifie ... | 2016 | 26757909 |
| functional response of aphidoletes aphidimyza rondani (diptera: cecidomyiidae) to aphis gossypii glover (hemiptera: aphididae): effects of vermicompost and host plant cultivar. | interactions between natural enemies and herbivores may be affected by application of fertilizers and different cultivars. we investigated the functional response of the predatory gall midge, aphidoletes aphidimyza rondani (diptera: cecidomyiidae) larvae to the nymphs of the melon aphid, aphis gossypii glover (hemiptera: aphididae), reared on two commonly grown cucumber cultivars in iran (khasib and karim) treated with different vermicompost/soil ratios (0:100, 10:90, 20:80, and 30:70%). based o ... | 2016 | 26563403 |
| biological control outcomes using the generalist aphid predator aphidoletes aphidimyza under multi-prey conditions. | the aphidophagous midge aphidoletes aphidimyza (diptera: cecidomyiidae) is used in biological control programs against aphids in many crops. short-term trials with this natural enemy demonstrated that that females prefer to oviposit among aphids colonizing the new growth of plants, leading to differential attack rates for aphid species that differ in their within-plant distributions. thus, we hypothesized that biological control efficacy could be compromised when more than one aphid species is p ... | 2016 | 27983620 |
| shallot aphids, myzus ascalonicus, in strawberry: biocontrol potential of three predators and three parasitoids. | the parasitization capacity of 3 parasitoids and the predation capacity of 3 predators towards the shallot aphid, myzus ascalonicus doncaster (homoptera: aphididae), on strawberry, fragaria x ananassa duchesne (rosales: rosaceae) cv. honeoye, were examined in laboratory experiments. in petri dish assays, both aphidius colemani viereck (hymenoptera: aphidiidae) and a. ervi haliday readily stung shallot aphids, with no significant difference in stinging frequency between the two species. a. ervi i ... | 2013 | 24224712 |
| interactions among the predatory midge aphidoletes aphidimyza (diptera: cecidomyiidae), the fungal pathogen metarhizium brunneum (ascomycota: hypocreales), and maize-infesting aphids in greenhouse mesocosms. | the generalist entomopathogenic fungus, metarhizium brunneum, has proved to have great potential as a versatile biological pest control agent. the gall midge aphidoletes aphidimyza is a specialist predator that occurs naturally in europe and has been successfully used for aphid suppression. however, the interaction between these two biological control organisms and how it may affect the biological control of aphids awaits further investigation. as part of the eu-supported project inbiosoil, this ... | 2017 | 28417909 |
| attraction of aphidius ervi (hymenoptera: braconidae) and aphidoletes aphidimyza (diptera: cecidomyiidae) to sweet alyssum and assessment of plant resources effects on their fitness. | the green peach aphid myzus persicae (sulzer) (hemiptera: aphididae) is one of the most economically important aphid species affecting crops worldwide. since many natural enemies of this aphid have been recorded, biological control of this pest might be a viable alternative to manage it. selected plant species in field margins might help to provide the natural enemies with food sources to enhance their fitness. this study aimed to investigate if sweet alyssum, lobularia maritima (l.) (brassicace ... | 2018 | 29365141 |
| the quality of nonprey food affects cannibalism, intraguild predation, and hyperpredation in two species of phytoseiid mites. | generalist arthropod predators not only prey on herbivores but also may engage in competitive interactions by attacking and consuming conspecifics (cannibalism) or other predators (intraguild predation [igp] and hyperpredation). these types of interactions are quite common among predators used in biological control. although there is evidence that nonprey food relaxes cannibalism and igp, there is little information regarding the impact of the quality of the nonprey food. herein, we examined how ... | 2017 | 29182769 |
| impact of humidity on the biological development of aphidoletes aphidimyza (diptera: cecidomyiidae). | aphidoletes aphidimyza rondani (diptera: cecidomyiidae) is one of the most important predators used in the augmentative biological control of aphids worldwide. however, due to its particular life history, mass rearing a. aphidimyza remains difficult. our results show that a high relative humidity level during pupation optimizes the development of a. aphidimyza by improving humidity levels during pupae storage, we improved the production efficiency and nearly achieved a 100% adult emergence rate. ... | 2016 | 27133578 |
| does insect mother know under what conditions it will make their offspring live? | according to the optimal oviposition theory, the larval success of insects depends on the oviposition site selection by females. females are expected to choose a site with many resources and few competitors or predators to allow the best performance for their progeny, assuming that "mother knows best." however, this is not systematically observed. the aphidoletes aphidimyza larvae are generalist aphid predators and females consequently lay their eggs near or inside aphid colonies. the goal of th ... | 2017 | 26616755 |
| functional responses and prey-stage preferences of a predatory gall midge and two predacious mites with twospotted spider mites, tetranychus urticae, as host. | the twospotted spider mite, tetranychus urticae koch (acari: tetranychidae), is an important pest of vegetables and other economically important crops. this study evaluated the functional responses and prey-stage preferences of three species of predators, a predatory gall midge, feltiella acarisuga (vallot) (diptera: cecidomyiidae), and two predatory mite species, neoseiulus californicus (mcgregor) (acari: phytoseiidae) and amblyseius swirskii (anthiashenriot), with t. urticae as the host, under ... | 2013 | 23879370 |
| an equal sex ratio followed by differential sex mortality causes overestimation of females in gall midges: no evidence for sex ratio regulation. | monogeny, the production of unisexual broods by individual females, has been recognized for nearly 80 years. the genetic nature of gall midges' sex determination predicts an equal numbers of male-producing and female-producing females in the populations such that the overall sex ratio is expected to be nearly 1:1. however, observations of some strictly monogenous populations with biased sex ratio, mainly toward females, have raised the question of whether gall midges are able to adjust their off ... | 2012 | 22643882 |
| (2r,7s)-diacetoxytridecane: sex pheromone of the aphidophagous gall midge, aphidoletes aphidimyza. | in a recent study, evidence was presented that females of the aphidophagous midge aphidoletes aphidimyza (rondi) (diptera: cecidomyiidae) release a sex pheromone to attract mates. our objectives were to identify and bioassay the pheromone. coupled gas chromatographic-electroantennographic detection(gc-ead) analyses of untreated and hydrogenated pheromone extract on three fused-silica columns (db-5, db-23, db-210) revealed a single compound that elicited responses from male antennae. retention in ... | 2004 | 15139315 |
| low temperature storage of larvae and synchronization of adult emergence in the predatory midge aphidoletes aphidimyza. | diapause larvae of aphidoletes aphidimyza were stored at a temperature of 3 degrees c under continuous darkness for up to 7 months with survival rates above 50%; after storage for 1 year the survival rate dropped to 12%. diapause was terminated in the majority of individuals within 120 days of chilling under storage conditions. brief exposure (10-60 s) to the vapor of n-hexane appeared to be a useful alternative to chilling for the termination of diapause. the larvae with terminated diapause req ... | 2001 | 11448113 |