Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Plant Sciences (36)
- Entomology (34)
- Agriculture (27)
- Agronomy and Crop Sciences (27)
- Horticulture (19)
-
- Agricultural Science (18)
- Botany (12)
- Animal Sciences (11)
- Physical Sciences and Mathematics (10)
- Plant Breeding and Genetics (10)
- Plant Pathology (10)
- Earth Sciences (8)
- Food Science (8)
- Food Processing (7)
- Soil Science (7)
- Biology (6)
- Agricultural Education (5)
- Bioresource and Agricultural Engineering (4)
- Civil and Environmental Engineering (4)
- Ecology and Evolutionary Biology (4)
- Education (4)
- Engineering (4)
- Environmental Engineering (4)
- Environmental Sciences (4)
- Genetics and Genomics (4)
- Agricultural Economics (3)
- Curriculum and Instruction (3)
- Weed Science (3)
- Zoology (3)
- Institution
-
- University of Nebraska - Lincoln (26)
- University of Arkansas, Fayetteville (20)
- Utah State University (7)
- Department of Primary Industries and Regional Development, Western Australia (6)
- Western University (4)
-
- TÜBİTAK (3)
- University of Kentucky (3)
- Selected Works (2)
- South Dakota State University (2)
- University of Vermont (2)
- California Polytechnic State University, San Luis Obispo (1)
- Louisiana State University (1)
- The University of Maine (1)
- The University of Southern Mississippi (1)
- University of Massachusetts Amherst (1)
- University of Texas Rio Grande Valley (1)
- Valparaiso University (1)
- Virginia Commonwealth University (1)
- Western Washington University (1)
- Publication Year
- Publication
-
- Arkansas Agricultural Experiment Station Research Series (18)
- Department of Entomology: Faculty Publications (8)
- All Current Publications (4)
- Proceedings of the Seventeenth Vertebrate Pest Conference 1996 (4)
- Bulletins 4000 - (3)
-
- Electronic Thesis and Dissertation Repository (3)
- Historical Research Bulletins of the Nebraska Agricultural Experiment Station (3)
- Turkish Journal of Zoology (3)
- University of Nebraska-Lincoln Extension: Historical Materials (3)
- Electronic Theses and Dissertations (2)
- Journal of the Department of Agriculture, Western Australia, Series 4 (2)
- Research Reports and Research Bulletins (2)
- USDA Wildlife Services: Staff Publications (2)
- United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications (2)
- Agriculture reports (1)
- All Archived Publications (1)
- Aspen Bibliography (1)
- Biology Faculty Publications (1)
- Biology Publications (1)
- College of Agriculture and Life Sciences Faculty Publications (1)
- Cranberry Station Extension meetings (1)
- David B. Taylor (1)
- Department of Entomology: Dissertations, Theses, and Student Research (1)
- Eastern Nebraska Research, Extension and Education Center (1)
- Entomology Faculty Publications (1)
- Entomology Papers from Other Sources (1)
- Funded Research Records (1)
- Graduate College Dissertations and Theses (1)
- Horticulture and Crop Science (1)
- Judith E Pasek (1)
Articles 1 - 30 of 84
Full-Text Articles in Life Sciences
Oystershell Scale (Hemiptera: Diaspididae) Population Growth, Spread, And Phenology On Aspen In Arizona, Usa, Connor D. Crouch, Richard W. Hofstetter, Amanda M. Grady, Nylah N.S. Edwards, Kristen M. Waring
Oystershell Scale (Hemiptera: Diaspididae) Population Growth, Spread, And Phenology On Aspen In Arizona, Usa, Connor D. Crouch, Richard W. Hofstetter, Amanda M. Grady, Nylah N.S. Edwards, Kristen M. Waring
Aspen Bibliography
Oystershell scale (OSS; Lepidosaphes ulmi L.) is an invasive insect that threatens sustainability of aspen (Populus tremuloides Michx.) in the southwestern United States. OSS invasions have created challenges for land managers tasked with maintaining healthy aspen ecosystems for the ecological, economic, and aesthetic benefits they provide. Active management is required to suppress OSS populations and mitigate damage to aspen ecosystems, but before management strategies can be implemented, critical knowledge gaps about OSS biology and ecology must be filled. This study sought to fill these gaps by addressing 3 questions: (i) What is the short-term rate of aspen mortality in …
Indoor Pests And Human Health: Characterizing Contaminants And Improving Mitigation, Johnalyn Gordon
Indoor Pests And Human Health: Characterizing Contaminants And Improving Mitigation, Johnalyn Gordon
Theses and Dissertations--Entomology
Much of the United States population spends the majority of their time indoors and within the home. Not only are indoor arthropod pests an unsightly nuisance in our homes, but they can have serious impacts on human health, especially with chronic exposure. In addition to negative health impacts, costs associated with these medical impacts can be tremendous. For these reasons, it is critical to develop comprehensive strategies for pest reduction and mitigation of associated health impacts. The work outlined in this dissertation represent examination of the distribution of a hypothesized bed bug allergen within the indoor environment, identification of a …
Origin, Rise And Development Of American Upland Cotton And Their Status At Present. Second Edition, Ed. By F.M. Bourland, J. O. Ware
Research Reports and Research Bulletins
American Upland cotton (Gossypium hirsutum) is a Dixie product. Although the stocks of the species were brought from elsewhere, new types (through series of adaptational changes) formed this distinctive group—the final characteristics of which are a product of the Cotton Belt of the United States. These biological processes were considerably aided by man and the steps of development possibly were about as follows: (a) natural selection took place in the earlier introductions, (b) seed were saved from the more choice stocks, (c) series of subsequent introductions were obtained from the better sources, (d) these were acclimatized and the superior ones …
Arkansas Soybean Research Studies 2022, Jeremy Ross
Arkansas Soybean Research Studies 2022, Jeremy Ross
Arkansas Agricultural Experiment Station Research Series
Arkansas is the leading soybean-producing state in the mid-southern United States. Arkansas ranked 11th in soybean production in 2022 when compared to the other soybean-producing states in the U.S. The state represented 3.04% of the total U.S. soybean production and 3.64% of the total acres planted in soybean in 2022. The 2022 state soybean average yield was 52.0 bushels per acre, tying the previous state yield record of 52 bushels per acre set in 2021. The top five soybean-producing counties in 2022 were Mississippi, Crittenden, Phillips, Poinsett, and Arkansas (Table 1). These five counties accounted for over 35.7% of the …
Summaries Of Arkansas Cotton Research 2022, Fred Bourland
Summaries Of Arkansas Cotton Research 2022, Fred Bourland
Arkansas Agricultural Experiment Station Research Series
The current economic environment continues to drive the need to produce record or near-record yields to be profitable. Price volatility in 2022 added another level of difficulty in the quest for being profitable. The cotton market saw significant movement after reaching a $1.5802 per pound high in May 2022, cotton prices corrected and more than halved in value at the October 2022 low, and then consolidated around the 80 cents per pound level in December 2022 (Cotton is Consolidating). Great uncertainties still exist for the upcoming season, most of which are outside of our control. These include, but are not …
B. R. Wells Arkansas Rice Research Studies 2022, J. Hardke, X. Sha, N. Bateman
B. R. Wells Arkansas Rice Research Studies 2022, J. Hardke, X. Sha, N. Bateman
Arkansas Agricultural Experiment Station Research Series
Arkansas is the leading rice producer in the United States. The state represents 50.1% of total U.S. rice production and 49.8% of the total acres planted to rice in 2022. Rice cultural practices vary across the state and across the U.S. However, these practices are also dynamic and continue to evolve in response to changing political, environmental, and economic times. This survey was initiated in 2002 to monitor and record changes in the way Arkansas rice producers approach their livelihood. The survey was conducted by polling county extension agents in each of the counties in Arkansas that produce rice. Questions …
Arkansas Soybean Performance Tests 2022, J. F. Carlin, R. B. Mulloy, R. D. Bond
Arkansas Soybean Performance Tests 2022, J. F. Carlin, R. B. Mulloy, R. D. Bond
Arkansas Agricultural Experiment Station Research Series
Soybean variety and strain performance tests are conducted each year in Arkansas by the University of Arkansas System Division of Agriculture’s Arkansas Crop Variety Improvement Program. The tests provide information to companies developing varieties and/ or marketing seed within the state, and aid the Arkansas Cooperative Extension Service in formulating variety recommendations for soybean producers.
International Rice Outlook: International Rice Baseline Projections 2022-2032, A. Durand-Morat, S. Bairagi, W. Mulimbi
International Rice Outlook: International Rice Baseline Projections 2022-2032, A. Durand-Morat, S. Bairagi, W. Mulimbi
Research Reports and Research Bulletins
Rice prices in Asia increased since the Summer of 2022 mainly due to worries about a reduction in rice production in India caused by an abnormal monsoon season (Fig. 1). The upward trend in export prices solidified after India implemented a 20% export tariff on brown and milled long-grain rice, and a complete ban on exports of broken rice, in September 2022 to curve down exports and release the pressure on domestic rice prices. India’s rice export prices increased since then and proportionally to the value of the export tax. The latest estimates put rice production at 128 million metric …
Insect And Pest Management For Sustaining Crop Production Under Changing Climatic Patterns Of Drylands, Ruchika Kashyap, Sajjan Grover, Heena Puri, Sandeep Kaur, Jagmohan Singh, Karansher S. Sandhu, Gagandeep Kaur, Hinal Kharva, Shivreet Kaur, Balwinder Kaur
Insect And Pest Management For Sustaining Crop Production Under Changing Climatic Patterns Of Drylands, Ruchika Kashyap, Sajjan Grover, Heena Puri, Sandeep Kaur, Jagmohan Singh, Karansher S. Sandhu, Gagandeep Kaur, Hinal Kharva, Shivreet Kaur, Balwinder Kaur
Department of Entomology: Faculty Publications
Climate change is alarming, particularly for agriculturists as it severely impacts the development, distribution, and survival of insects and pests, affecting crop production globally. Over time, climate change is drastically tumbling the crop productivity in all the cropping systems, whereas the dryland agriculture with existing low productivity is immensely hit. While all the existing species in drylands, including humans, are coping with extreme climate variations for millennia, future climate change predictions put dryland agriculture in a threat zone. Drylands support 38% of the world’s population; therefore, climate change coupled with population growth and global food security draws the attention of …
Arkansas Soybean Research Studies 2021, Jeremy Ross
Arkansas Soybean Research Studies 2021, Jeremy Ross
Arkansas Agricultural Experiment Station Research Series
Arkansas is the leading soybean-producing state in the mid-southern United States. Arkansas ranked 11th in soybean production in 2021 compared to the other soybean-producing states in the U.S. The state represented 3.49% of the total U.S. soybean production and 3.49% of the total acres planted in soybean in 2021. The 2021 state soybean average yield was 52.0 bushels per acre, setting a new state record and surpassing the previous yield record of 51.5 bushels per acre set in 2020. The top five soybean-producing counties in 2021 were Mississippi, Phillips, Crittenden, Poinsett, and Arkansas (Table 1). These five counties accounted for …
The Backyard Garden - Leafy Greens Pests, Nick Volesky, Marion Murray
The Backyard Garden - Leafy Greens Pests, Nick Volesky, Marion Murray
All Current Publications
This fact sheet provides information about the diseases that affect leafy greens. It includes general information, other hosts, disease symptoms to watch for, and management options.
B.R. Wells Arkansas Rice Research Studies 2021, J. Hardke, X. Sha, N. Bateman
B.R. Wells Arkansas Rice Research Studies 2021, J. Hardke, X. Sha, N. Bateman
Arkansas Agricultural Experiment Station Research Series
Arkansas is the leading rice producer in the United States. The state represents 47.5% of total U.S. rice production and 47.8% of the total acres planted to rice in 2021. Rice cultural practices vary across the state and across the U.S. However, these practices are also dynamic and continue to evolve in response to changing political, environmental, and economic times. This survey was initiated in 2002 to monitor and record changes in the way Arkansas rice producers approach their livelihood. The survey was conducted by polling county extension agents in each of the counties in Arkansas that produce rice. Questions …
Where To Invest Project Efforts For Greater Benefit: A Framework Formanagement Performance Mapping With Examples For Potato Seed Health, C. E. Buddenhagen, Y. Xing, J. L. Andrade-Piedra, G. A. Forbes, P. Kromann, I. Navarrete, S. Thomas-Sharma, Robin A. Choudhury, K. F. Andersen Onofre, E. Schulte-Geldermann
Where To Invest Project Efforts For Greater Benefit: A Framework Formanagement Performance Mapping With Examples For Potato Seed Health, C. E. Buddenhagen, Y. Xing, J. L. Andrade-Piedra, G. A. Forbes, P. Kromann, I. Navarrete, S. Thomas-Sharma, Robin A. Choudhury, K. F. Andersen Onofre, E. Schulte-Geldermann
School of Earth, Environmental, and Marine Sciences Faculty Publications and Presentations
Policymakers and donors often need to identify the locations where technologies are most likely to have important effects, to increase the benefits from agricultural development or extension efforts. Higher-quality information may help to target the high-benefit locations, but often actions are needed with limited information. The value of information (VOI) in this context is formalized by evaluating the results of decision making guided by a set of specific information compared with the results of acting without considering that information. We present a framework for management performance mapping that includes evaluating the VOI for decision making about geographic priorities in regional …
Soybean Gall Midge (Resseliella Maxima Gagné): Insecticide Efficacy And Seasonal Larval Abundance, Vilma Maria Montenegro Castro
Soybean Gall Midge (Resseliella Maxima Gagné): Insecticide Efficacy And Seasonal Larval Abundance, Vilma Maria Montenegro Castro
Department of Entomology: Dissertations, Theses, and Student Research
Soybean gall midge, Resseliella maxima Gagné was recently identified as a new species injuring soybean in Nebraska, Iowa, South Dakota, Minnesota, and Missouri. Resseliella maxima injury is caused by its three instars that feed on tissues within the soybean stem. Infested plants exhibit a darkening of the stem, disrupting nutrient flow within the plant and can lead to wilting or death of plants. Total yield losses can occur in the first 30 m of the field in heavily infested sites. The biology and behavior of this newly described insects is not well understood and management strategies for the management of …
Arkansas Soybean Research Studies 2020, Jeremy Ross
Arkansas Soybean Research Studies 2020, Jeremy Ross
Arkansas Agricultural Experiment Station Research Series
The 2020 Arkansas Soybean Research Studies includes research reports on topics pertaining to soybean across several disciplines from breeding to post-harvest processing. Research reports contained in this publication may represent preliminary or only data from a single year or limited results; therefore, these results should not be used as a basis for long-term recommendations. Several research reports in this publication will appear in other University of Arkansas System Division of Agriculture’s Arkansas Agricultural Experiment Station publications. This duplication is the result of the overlap in research coverage between disciplines and our effort to inform Arkansas soybean producers of the research …
High Tunnel Pest Management - Caterpillars, Nick Volesky, Marion Murray
High Tunnel Pest Management - Caterpillars, Nick Volesky, Marion Murray
All Current Publications
In Utah high tunnel production, there are various caterpillar pests (larvae of moth and butterfly species) that cause economic damage to crops. Common caterpillar pest species found in Utah include hornworms, tomato fruit worms, imported cabbage worms, diamondback moths, cabbage loopers, armyworms, and cutworms. Various weed species growing inside or outside high tunnels can attract and harbor caterpillar pests. Managing caterpillar pests in high tunnels involves various mechanical, chemical, biological, and cultural control practices.
B.R. Wells Arkansas Rice Research Studies 2020, J. Hardke, X. Sha, N. Bateman
B.R. Wells Arkansas Rice Research Studies 2020, J. Hardke, X. Sha, N. Bateman
Arkansas Agricultural Experiment Station Research Series
Arkansas is the leading rice producer in the United States. The state represents 47.5% of total U.S. rice production and 48.1% of the total acres planted to rice in 2020. Rice cultural practices vary across the state and across the U.S. However, these practices are also dynamic and continue to evolve in response to changing political, environmental, and economic times. This survey was initiated in 2002 to monitor and record changes in the way Arkansas rice producers approach their livelihood. The survey was conducted by polling county extension agents in each of the counties in Arkansas that produce rice. Questions …
High Tunnel Pest Management - Aphids, Nick Volesky, Zachery R. Schrumm
High Tunnel Pest Management - Aphids, Nick Volesky, Zachery R. Schrumm
All Current Publications
Aphids are a common pest found on high tunnel crops such as fruits, vegetables, ornamentals, grasses, and weeds. Four aphid species commonly found in Utah in high tunnels are green peach aphid (Myzus persicae), melon aphid (Aphis gossypii), potato aphid (Macrosiphum euphorbiae), and cabbage aphid (Brevicoryne brassicae). This fact sheet describes different aphids and reviews the aphid life cycle. It also addresses how to monitor for damage caused by aphids and cultural, biological, and chemical controls.
De Novo Whole Genome Assembly Of The Swede Midge (Contarinia Nasturtii), A Specialist Of Brassicaceae, Using Linked-Read Sequencing, Boyd A. Mori, Cathy Coutu, Yolanda H. Chen, Erin O. Campbell, Julian R. Dupuis, Martin A. Erlandson, Dwayne D. Hegedus
De Novo Whole Genome Assembly Of The Swede Midge (Contarinia Nasturtii), A Specialist Of Brassicaceae, Using Linked-Read Sequencing, Boyd A. Mori, Cathy Coutu, Yolanda H. Chen, Erin O. Campbell, Julian R. Dupuis, Martin A. Erlandson, Dwayne D. Hegedus
Entomology Faculty Publications
The swede midge, Contarinia nasturtii, is a cecidomyiid fly that feeds specifically on plants within the Brassicaceae. Plants in this family employ a glucosinolate-myrosinase defense system, which can be highly toxic to non-specialist feeders. Feeding by C. nasturtii larvae induces gall formation, which can cause substantial yield losses thus making it a significant agricultural pest. A lack of genomic resources, in particular a reference genome, has limited deciphering the mechanisms underlying glucosinolate tolerance in C. nasturtii, which is of particular importance for managing this species. Here, we present an annotated, scaffolded reference genome of C. nasturtii using linked-read …
The Probability Of Spotted Lanternfly, Lycorma Delicatula (Hemiptera: Fulgoridae), Escape Differs Among Life Stages And Between Two Trapping Techniques Commonly Used By Landowners, Sticky Bands And Duct Tape., Matthew Desko, Carolyne Schiebel, Samantha Silverman, Jessica Bickel, Karen Felton, Jennifer L. Chandler
The Probability Of Spotted Lanternfly, Lycorma Delicatula (Hemiptera: Fulgoridae), Escape Differs Among Life Stages And Between Two Trapping Techniques Commonly Used By Landowners, Sticky Bands And Duct Tape., Matthew Desko, Carolyne Schiebel, Samantha Silverman, Jessica Bickel, Karen Felton, Jennifer L. Chandler
The Great Lakes Entomologist
The invasive Lycorma delicatula (White) was first identified in Pennsylvania, U.S.A. in 2014, and has since increased its range to several Eastern states. Lycorma delicatula pose a serious threat to many native species, including hardwoods and grapes, and land owners are continually seeking effective traps to control populations. Both commercially-produced Web-Cote brand sticky bands and less expensive duct tape are often used by land owners to trap L. delicatula. However, the probability of escape from these adhesives has not been formally assessed, and almost certainly differs as a function of life stage and type of adhesive used. The purpose …
The Future Of Organic Insect Pest Management: Be A Better Entomologist Or Pay For Someone Who Is, David H. Headrick
The Future Of Organic Insect Pest Management: Be A Better Entomologist Or Pay For Someone Who Is, David H. Headrick
Horticulture and Crop Science
Insect pest management in certified organic production systems presents considerable challenges for growers. The Federal National Organic Program (NOP) guidelines list acceptable tactics, but their effective use requires a considerable knowledgebase in entomology. The range of tactics allowed by the NOP are viewed as limiting by many growers and there are important elements missing from the list such as pest monitoring and identification. Educational programs must consider utilizing instructional methods and additional means of outreach that introduce new pest management tactics that are individualized, regionally appropriate and emphasize grower adoption and collaboration with local professionals. This review describes the challenges …
Soybean Gall Midge (Diptera: Cecidomyiidae), A New Species Causing Injury To Soybean In The United States, Anthony J. Mcmechan, Erin W. Hodgson, Adam J. Varenhorst, Thomas Hunt, Robert J. Wright, Bruce D. Potter
Soybean Gall Midge (Diptera: Cecidomyiidae), A New Species Causing Injury To Soybean In The United States, Anthony J. Mcmechan, Erin W. Hodgson, Adam J. Varenhorst, Thomas Hunt, Robert J. Wright, Bruce D. Potter
Eastern Nebraska Research, Extension and Education Center
The soybean gall midge (Resseliella maxima Gagné) was recently identified as a new species causing injury to soybean in the Midwestern United States. Although this insect was only recently identified, it has likely been present in soybean fields for at least the last 8 yr based on anecdotal reports. The soybean gall midge has historically been observed late in the season on soybean plants that were believed to have been previously compromised by a plant pathogen or mechanical damage with little to no concern for economic losses. In late June 2018, dead and dying plants were found to be associated …
Assessment Of Entomopathogenic Nematodes And Their Symbiotic Bacteria To Control The Stink Bugs Euschistus Heros And Dichelops Melacanthus (Heteroptera: Pentatomidae) In The Soybean-Corn Succession System, Samanta Letícia Lopes Nanzer, Gustavo Henrique Recchia, Julie Giovanna Chacon-Orozco, Raphael Satochi Abe Silva, Jorge Franco Maringoli Cardoso, Luis Garrigós Leite
Assessment Of Entomopathogenic Nematodes And Their Symbiotic Bacteria To Control The Stink Bugs Euschistus Heros And Dichelops Melacanthus (Heteroptera: Pentatomidae) In The Soybean-Corn Succession System, Samanta Letícia Lopes Nanzer, Gustavo Henrique Recchia, Julie Giovanna Chacon-Orozco, Raphael Satochi Abe Silva, Jorge Franco Maringoli Cardoso, Luis Garrigós Leite
Turkish Journal of Zoology
The Neotropical brown stink bug Euschistus heros and the green-belly stink bug Dichelops melacanthus are the most important pests today for the succession system of soy-corn in Brazil. Dichelops melacanthus attacks the emerging shoot (epicotyl) of corn plants at the seedling stage of their development, remaining and reproducing on the straw over generations. Euschistus heros, on the other hand, feeds directly on the grains and lodge under fallen leaves after the soybean harvest, due to the absence of another crop host. Entomopathogenic nematodes (EPNs) are capable of killing insects due to their ability to search for the host in the …
Susceptibility Of Agriotes Larvae (Coleoptera: Elateridae) To "Stress And Kill" Strategies Using Spinosad And The Entomopathogenic Fungus Metarhizium Brunneum., Pierre Antoine Bourdon, Ian Baxter, Giselher Grabenweger, Tariq Mahmud Butt
Susceptibility Of Agriotes Larvae (Coleoptera: Elateridae) To "Stress And Kill" Strategies Using Spinosad And The Entomopathogenic Fungus Metarhizium Brunneum., Pierre Antoine Bourdon, Ian Baxter, Giselher Grabenweger, Tariq Mahmud Butt
Turkish Journal of Zoology
Wireworms (Agriotes obscurus, Agriotes lineatus, Agriotes sordidus) are major pests of arable crops. Damage caused by these subterranean pests has increased following the withdrawal of many traditional synthetic insecticides. Wireworms are susceptible to entomopathogenic fungi belonging to the genus Metarhizium. The aim of this study was to determine if exposure of different wireworm species to sublethal doses of the insecticide spinosad altered their susceptibility to different strains of Metarhizium brunneum. Of the three wireworm species studied, A. obscurus was the most susceptible species to the isolates of M. brunneum tested, while A. lineatus and A. sordidus were not affected by …
The Granulate Cutworm (Lepidoptera: Noctuidae): Biological Parameters Under Controlled Conditions, Host Plants, And Distribution In The Americas, Alexandre Specht, Fernando M.S. Dias, Germán San Blas, Vânia F. Roque-Specht, Mirna M. Casagrande, Olaf H.H. Mielke, Débora G. Montezano, Izailda Barbosa Santos, Silvana V. Paula-Moraes, Thomas E. Hunt, Juaci V. Malaquias, Felipe A.D. Bonfin, Paulo V.M. Vieira
The Granulate Cutworm (Lepidoptera: Noctuidae): Biological Parameters Under Controlled Conditions, Host Plants, And Distribution In The Americas, Alexandre Specht, Fernando M.S. Dias, Germán San Blas, Vânia F. Roque-Specht, Mirna M. Casagrande, Olaf H.H. Mielke, Débora G. Montezano, Izailda Barbosa Santos, Silvana V. Paula-Moraes, Thomas E. Hunt, Juaci V. Malaquias, Felipe A.D. Bonfin, Paulo V.M. Vieira
Department of Entomology: Faculty Publications
Feltia subterranea (Fabricius), commonly known as the granulate cutworm, is a common species of owlet moths (Noctuidae) of major agricultural importance, widely distributed in Nearctic and Neotropical regions. This study was conducted to determine the species biological parameters, gather information about its larval host plants, and assess the agricultural significance of this species in the Americas. The viability of the egg, larval, pupal stages, and prepupal period was 98, 98, and 100%, respectively, under laboratory conditions. The average duration of the egg, larval, pupal stages, and prepupal period was 3, 17, 4, and 13 d, respectively. All laboratory-reared larvae developed …
Do Mosquito Pesticides Harm Their Natural Enemies? Ecological Impacts And Non-Target Effects Of Larvicides On Mosquito Predators, Joseph Nelsen
Do Mosquito Pesticides Harm Their Natural Enemies? Ecological Impacts And Non-Target Effects Of Larvicides On Mosquito Predators, Joseph Nelsen
Master's Theses
Larvicides are chemicals used to kill juvenile mosquitoes. When applied to an area, other aquatic organisms are exposed to these chemicals. The removal or impairment of top insect predators could be beneficial to mosquito populations once harmful pesticide levels dissipate. Two common larvicides were examined: growth regulators (IGRs) and surface films (SFs). The goal of this project was to determine if larvicides harm mosquito predators common to southern Mississippi. I surveyed aquatic sites before and after IGR and SF treatments, and then compared changes in insect community structure. Community evenness was lower in SF treated habitats. When analyzing prey taxa …
Insights From Population Genomics To Enhance And Sustain Biological Control Of Insect Pests, Arun Sethuraman, Fredric J. Janzen, David W. Weisrock, John J. Obrycki
Insights From Population Genomics To Enhance And Sustain Biological Control Of Insect Pests, Arun Sethuraman, Fredric J. Janzen, David W. Weisrock, John J. Obrycki
Biology Faculty Publications
Biological control—the use of organisms (e.g., nematodes, arthropods, bacteria, fungi, viruses) for the suppression of insect pest species—is a well-established, ecologically sound and economically profitable tactic for crop protection. This approach has served as a sustainable solution for many insect pest problems for over a century in North America. However, all pest management tactics have associated risks. Specifically, the ecological non-target effects of biological control have been examined in numerous systems. In contrast, the need to understand the short- and long-term evolutionary consequences of human-mediated manipulation of biological control organisms for importation, augmentation and conservation biological control has only recently …
Double-Stranded Rna Technology To Control Insect Pests: Current Status And Challenges, Olivier Christiaens, Steve Whyard, Ana M. Vélez, Guy Smagghe
Double-Stranded Rna Technology To Control Insect Pests: Current Status And Challenges, Olivier Christiaens, Steve Whyard, Ana M. Vélez, Guy Smagghe
Department of Entomology: Faculty Publications
Exploiting the RNA interference (RNAi) gene mechanism to silence essential genes in pest insects, leading to toxic effects, has surfaced as a promising new control strategy in the past decade. While the first commercial RNAi-based products are currently coming to market, the application against a wide range of insect species is still hindered by a number of challenges. In this review, we discuss the current status of these RNAi- based products and the different delivery strategies by which insects can be targeted by the RNAi-triggering double-stranded RNA (dsRNA) molecules. Furthermore, this review also addresses a number of physiological and cellular …
Phenology And Dispersal Of The Wheat Stem Sawfly (Hymenoptera: Cephidae) Into Winter Wheat Fields In Nebraska, Chris T. Mccullough, Gary L. Hein, Jeff Bradshaw Dr.
Phenology And Dispersal Of The Wheat Stem Sawfly (Hymenoptera: Cephidae) Into Winter Wheat Fields In Nebraska, Chris T. Mccullough, Gary L. Hein, Jeff Bradshaw Dr.
Department of Entomology: Faculty Publications
Historically, the wheat stem sawfly, Cephus cinctus Norton was a pest in spring wheat-growing regions of the northern Great Plains. However, in the 1980s, it was found infesting winter wheat fields in Montana. Infestations were first detected in western Nebraska in the 1990s, and have since spread throughout the Nebraska Panhandle. Larval damage occurs from stem-mining, but stem girdling that results in lodged stems that are not harvested results in the greatest yield losses.The biology and phenology of the wheat stem sawfly are well described in the northern portion of its range, but they are lacking in Colorado, southeast Wyoming, …
Using Visual And Digital Imagery To Quantify Horn Fly (Diptera: Muscidae) Densities, Brandon Smythe, David J. Boxler, Gary Brewer, Eric T. Psota, D. Wes Watson
Using Visual And Digital Imagery To Quantify Horn Fly (Diptera: Muscidae) Densities, Brandon Smythe, David J. Boxler, Gary Brewer, Eric T. Psota, D. Wes Watson
Department of Entomology: Faculty Publications
The horn fly, Haematobia irritans L. (Diptera: Muscidae), is a persistent pest of cattle globally. A threshold of 200 flies per animal is considered the standard management goal; however, determining when that threshold has been exceeded is difficult using visual estimates that tend to overestimate the actual fly densities and are, at best, subjective. As a result, a more reliable and durable method of determining horn fly densities is needed. Here, we describe the methods commonly used to quantify horn fly densities including visual estimates and digital photography, and provide examples of quantification software and the prospect for computer automation …