Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 21 for “"Aphididae"”.
-
Induced Walking Behavior of Rhopalosiphum Padi L. (Homoptera: Aphididae)
Movement of apterous adults and fourth instar nymphs was monitored following different perturbations and combination of perturbations. Apterous aphids, caged overnight on oat plants in a 25-plant infestation focus in the center of each 900-plant plot, were subjected to a given perturbation or …
-
Predator-prey interactions involving the soybean aphid (Hemiptera: Aphididae) in Missouri
The recently introduced soybean aphid, Aphis glycines Matsumura, is found in all soybean growing areas within Missouri. Despite soybean aphid's widespread distribution, it has reached economic threshold in few soybean fields in Missouri. We hypothesized that a predator complex suppresses soybean …
-
Management of the soybean aphid, Aphis glycines Matsumura (Hemiptera: Aphididae), in Iowa
… aphid, Aphis glycines Matsumura (Hemiptera: Aphididae) is a pest of soybeans, Glycine max (L.) Merrill. The main goal of this research was to verify the preliminary economic threshold for A. glycines management in Iowa. Secondary goals included; verifying an alternative sampling techniques …
-
Mecanismos de ação da cobertura morta sobre populações de pulgões (Homoptera, Aphididae) em couve
… brassicae (Linnaeus 1758) (Homoptera, Aphididae) e de Myzus persicae (Sulzer 1776) (Homoptera, Aphididae), em couve comum “Manteiga da Fazenda” (Brassica oleraceae var. acephala). Foram instalados três experimentos de campo na Horta Velha da Universidade Federal de Viçosa, Minas Gerais, …
-
Quantification of insecticide resistance in the tobacco-adapted form of the green peach aphid, Myzus persicae (Sulzer)(Hemiptera: Aphididae)
The tobacco-adapted form of the green peach aphid, Myzus persicae (Sulzer), is one of the most important insect pests of tobacco in the United States and around the world. Insecticides play a major role in controlling the aphid on tobacco because natural enemies usually fail to maintain its …
-
The effect of spirea aphid (Homoptera: aphididae) feeding and nitrogen fertilization on the growth of young apple trees, with comparisons to apple aphid
The overall goal of this research was to determine the effects of spirea aphid, Aphis spiraecola Patch, feeding and nitrogen fertilization on net photosynthesis (Pn), leaf chlorophyll content and greenneess, growth, dry matter accumulation, and carbohydrate concentrations of young apple trees, with …
-
Rate of Food Consumption of Acris Crepitans Blanchardi Harper in South-Central Iowa
… pests consumed included members from Aphididae, Cicadellidae, Curculionidae, Syrphidae, and Locustidae. Recommendations. The techniques developed for determining the rate of food passage can be applied to studies of other anurans. Field cages should be used to reduce unnatural …
-
Insect pest management in hemp in Virginia
… cannabis aphid (Phorodon cannabis) (Hemiptera: Aphididae). In 2019, indoor production surveys revealed that cannabis aphid, twospotted spider mite (Tetranychus urticae Koch) (Acari: Tetranychidae), and hemp russet mite (Aculops cannabicola [Farkas]) (Acari: Eriophyidae) would likely cause …
-
Studies on Species of the Aphid Genus Cinara on Pinus Edulis and Pinus Monophylla
Cinara are aphids (Hemiptera: Aphididae: Lachninae) that feed exclusively on conifers of the Cupressaceae and Pinaceae. They are speciose and particularly diverse in North America. Their phylogenetics is completely unknown and they historically have been treated based on the taxonomy of their …
-
Alternativas de manejo de áfidos limitantes de la producción de alfalfa en el Sudoeste bonaerense
… K. y Therioaphis trifolii M. (Hemiptera: Aphididae). En 23 cultivares de M. sativa se evaluaron la resistencia por antixenosis y por antibiosis y la tolerancia. Los cultivares ACA 605, Brava y CW 194 resultaron antixénoticos. Los cultivares CW 194, CW 1010, EBC 90, Pampa Flor, Sirosal y …
-
Thermal biology and establishment potential of two non-native candidate biological control agents, Nesidiocoris tenuis Reuter (Hemiptera: Miridae) and Lysiphlebus testaceipes (Cresson) (Hymenoptera: Braconidae, Aphidiinae), in the U.K.
… to \(Aphis\) \(fabae\) Scop. (Hemiptera: Aphididae) under a range of climatic conditions. These data are discussed in relation to current debate on the environmental risk assessment and regulatory system in Europe for the release of non-native biological control agents.
-
Diaporthe, Soybean Cyst Nematode, and Soybean Aphid: An Evaluation of Potential Interactions Occurring Among Pests on Soybean in South Dakota
… <em>Aphis glycines</em> Matsumura (Hemiptera: Aphididae). Additionally, these pest can co-occur in fields within South Dakota and the implications associated with interactions among these pests are unknown. We hypothesized that both <em>Diaporthe</em> species would interact with <em>H. …
-
The effect of a cabbage-carrot intercropping system on the incidence of cabbage pests
… and Lipaphis erysimi (Kaltenbach) (Homoptera: Aphididae) are considered the most important cabbage pests in South Africa. Pest control in cabbage is still heavily reliant on use of insecticides even though insecticide application usually result in increased pest status of P. xylostella. Use of …
-
Ecological and logistical considerations toward introducing Heringia calcarata to New Zealand
… (WAA), Eriosoma lanigerum (Hausmann) (Hemiptera: Aphididae). Ultimately, the introduction of H. calcarata to New Zealand will be contingent upon satisfying regulatory requirements and concerns, including documentation that it will not have an adverse effect on the existing biological control of …
-
Soybean aphid intra-biotype variability based on colonization of specific soybean genotypes, resistance responses of soybean genotypes to pathogen infection after the application of chemical elicitors, and resistance to charcoal rot identified in ancestral soybean germplasm
… aphid, Aphis glycines Matsumura (Hemiptera; Aphididae), is one of the most destructive insect pests of soybeans (Glycine max) in the United States. One method for managing this pest is through host plant resistance. Since its arrival in 2000, four aphid biotypes have been identified that are …
-
Evaluation of soybean aphid resistance, yield qtl confirmation, and genetic gain in soybean
… aphid, Aphis glycines Matsumura (Hemiptera: Aphididae), is a common insect pest of soybean [Glycine max (L.) Merr] in China and is also found frequently in other Asian countries. It was identified in the US in 2000 and has since spread throughout the soybean growing regions of the US and …
-
Variabilidad genética y resistencia a insecticidas en Orius laevigatus (Fieber) (Hemíptera: Anthocoridae) para mejorar su eficacia en el control de plagas
… ninfas de Myzus persicae (Sulzer) (Hemiptera: Aphididae) y larvas de F. occidentalis. Nuestros resultados han establecido que existe una variación genética en la susceptibilidad a todos los insecticidas ensayados en poblaciones silvestres y comerciales de O. laevigatus, y que tal variación …
-
Predator-prey behavioural interactions on plants, with special emphasis on aphid dropping defence and ladybird search strategies
Predator-prey interactions have significant short- and long-term implications for the individuals involved, their populations’ dynamics, and the broader ecological community. Predation is a strong selective force that has led to prey evolving a great diversity of defensive adaptations, while …
Page 1 of 2