Browsing Entomology by Issue Date
Now showing items 1-20 of 27
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Effects of Soybean Aphid Resistance on the Lady Beetle Harmonia axyridis Mediated by the Soybean Aphid Aphis glycines
(North Dakota State University, 2010)Plants can directly and indirectly influence the natural enemies of their herbivores. Such trophic level effects apply to plants in natural and agronomic settings as well as to plants bred for pest resistance and biological ... -
Integrated Pest Management of Soybean Aphid (Aphis glycines) in North Dakota
(North Dakota State University, 2010)The soybean aphid, Aphis glycines Matsumura (Hemiptera: Aphididae), is a major pest of soybean (Glycine max L.). This aphid is a native of Asia and was first discovered in the United States in Wisconsin in July 2000, and ... -
Impact of Ragl Aphid Resistant Soybeans on Binodoxys communis (Gahan) (Hymenoptera: Braconidae), a Parasitoid of Soybean Aphid Aphis glycines Matsumura (Hemiptera: Aphididae )
(North Dakota State University, 2011)After its discovery in North America during the summer of 2000, the soybean aphid, Aphis glycines Matsumura (Hemiptera: Aphididae) became a major pest of the soybean, Glycine max (L.) Merr., in most soybean growing regions ... -
Pest Management of Wheat Stem Sawfly, Cephus Cinctus Norton (Hymenoptera: Cephidae), in Western North Dakota
(North Dakota State University, 2012)The wheat stem sawfly, Cephus cinctus Norton, is regarded as a major pest of dryland wheat in the Upper Great Plains. For peak emergence of wheat stem sawfly, the most accurate base was 0 C using air temperature, and then ... -
Density and Movement of Soybean Aphid, Aphis Glycines (Hemiptra: Aphididae) in Response to Temperature and Resistant Soybean Plants
(North Dakota State University, 2012)Movement is one way herbivores respond to their host plant, yet the movement of relatively immobile insects has received little attention. We studied how the movement and density of apterous soybean aphids responds to a ... -
Oviposition Preference and Larval Host Range of the Sugarbeet Root Maggot
(North Dakota State University, 2012)The sugarbeet root maggot, Tetanops myopaeformis Röder, is native to North America; however, its main crop host, sugarbeet, Beta vulgaris L., was introduced to the continent from Europe. This study involved an investigation ... -
Crop and Prairie Grasses Serving as Hosts for the Hessian Fly
(North Dakota State University, 2012)Insect herbivores typically parasitize a relatively small number of plant species. Host specialization is presumed to be a result of evolutionary arms races, with insect adaptations ultimately restricting host range. Being ... -
The Wheat-Hessian Fly Interaction: Co-Evolution and Ecology in an Economically Important Plant-Insect System
(North Dakota State University, 2013)The study of wheat’s H-gene mediated resistance to Hessian flies examined the cost of the constitutively expressed H-gene which functions in the plant’s surveillance system and the cost of the downstream induced response. ... -
Effect of Larval Diet on Endogenous Carbon Reproductive Resources of Fifth Instars and Adult Females of the Moth, Heliothis Virescens
(North Dakota State University, 2013)Mostly adult Lepidoptera feed on plant nectar. That is, adults can only contribute to carbon, and not nitrogen, acquisition. The moth Heliothis virescens were used to explore the hypothesis that larval nutrition influences ... -
A Faunal Survey of Coleoptera, Hemiptera (Heteroptera), and Lepidoptera Associated with Fraxinus Pennsylvanica Marshall (Oleaceae) in the Red River Valley of Eastern North Dakota
(North Dakota State University, 2014)The emerald ash borer (Agrilus planipennis; EAB) is an invasive wood-boring beetle causing mortality of ash trees in North America. This project was initiated because of the threat of EAB moving into North Dakota. The main ... -
Exploring Effects of Weed Management in Agroecosystems: Arthropods, Soil Properties and Soybean Production
(North Dakota State University, 2014)Soil-dwelling arthropods contribute to agroecosystems, but it’s unclear how specific taxa respond to weed management practices. Objectives were to explore 1) response of Collembola to weed management in a glyphosate-tolerant ... -
Aphid Interactions with Environmental Variation in the Field and Lab
(North Dakota State University, 2015)A basic tenet of ecology is that organisms are affected by both abiotic factors and other organisms; therefore, there is value in understanding interactions in our changing world. Aphids are model organisms for questions ... -
The Effects of Abiotic Climate Change Factors on Aphid Life History and Populations
(North Dakota State University, 2015)While the effects of many abiotic factors associated with climate change have not been extensively studied, work on model organisms is beginning to help predict effects on similar species. Research on climate change has ... -
The Effects of Salinity on Herbivorous Pests of Corn and Soybean
(North Dakota State University, 2016)Many environmental factors, including soil characteristics, are critically important for plants, herbivorous arthropods, and their interactions. Despite increasing evidence that soil salinity can drastically impact plants, ... -
Behaviors Mediate Aphid Interactions with Natural Enemies and the Environment
(North Dakota State University, 2016)Behavior is a crucial component of ecology that mediates how animals interact with one another and with the environment. Behaviors can allow animals to avoid the harmful effects of things like competition, predation, and ... -
IfSAR DTM-derived Predictive Flood Models: A Cost-effective Approach to Target Site- Specific Mosquito (Diptera: Culicidae) Control Efforts
(North Dakota State University, 2016)The study area is the 400 km2 floodplain and wetlands of the upper Missouri River, located in the northwestern corner of North Dakota, near the community of Williston. Regional climate is semiarid, yet the Williston vector ... -
Collection and Analysis of Volatiles of Various Cultivated Sunflower, Helianthus Annuus, (Asteraceae) Germplasm and Investigation of Some Aspects of Host Selection in Adult Red Sunflower Seed Weevil, Smicronyx Fulvus L., (Coleoptera Curculionidae)
(North Dakota State University, 2017)Plants of sunflower germplasm putatively resistant or susceptible to the red sunflower seed weevil, Smicronyx fulvus (Coleoptera: Curculionidae) were used to test the hypothesis that the volatile composition of these two ... -
Conspectus of Aeptini Stål, 1871 (Hemiptera: Heteroptera: Pentatomidae: Pentatominae)
(North Dakota State University, 2017)The Pentatominae tribe Aeptini is revised. A key to the known genera is provided, together with redescription and figures. The genus Paramenestheus is revised, including a key to the species and figures to all the included ... -
The Tingidae (Hemiptera: Heteroptera) of Southern Central America (with an Emphasis on Costa Rica)
(North Dakota State University, 2018)The genera of Tingidae of the neotropics are herein diagnosed and a key for their identification is also provided. Five new genera are described from Central America, two from Panama, two from Costa Rica, and one new genus ... -
Geographic Distribution and Effects of Transgenic Corn Hybrids and Chemical Insecticides on Northern and Western Corn Rootworms (Coleoptera: Chrysomelidae) in North Dakota
(North Dakota State University, 2018)Northern (Diabrotica barberi Smith & Lawrence) and western (D. virgifera virgifera LeConte) corn rootworms are major corn (Zea mays L.) pests in North America. Integrated pest management (IPM) strategies used for corn ...