Open Access. Powered by Scholars. Published by Universities.®

Life Sciences Commons

Open Access. Powered by Scholars. Published by Universities.®

2021

Entomology

Institution
Keyword
Publication
Publication Type
File Type

Articles 1 - 30 of 339

Full-Text Articles in Life Sciences

Structure And Parasitism Of Egg-Batches Of The Pine Processionary Moth, Thaumetopoea Pityocampa In The Algerian Cedar Forests., Zineb Messaadia, Nabil Bertella, Naama Frah Dec 2021

Structure And Parasitism Of Egg-Batches Of The Pine Processionary Moth, Thaumetopoea Pityocampa In The Algerian Cedar Forests., Zineb Messaadia, Nabil Bertella, Naama Frah

Journal of Bioresource Management

Today, climate change is one of the greatest threats facing forest ecosystems. It directly influences the geographical distribution of insects and increases epidemics of harmful insects. The present work took place in this context. It aimed to contribute to the knowledge of egg parasitoids that could affect the evolution of the pine processionary caterpillar Thaumetopoea pityocampa, a major forest pest in Algeria and Mediterranean countries. The study was carried out on 120 batches of eggs taken from the Atlas cedar at two sites in the Chelia cedar zone (case of eastern Algeria) in 2017. It allowed the analysis of a …


Occurrence Of An Exotic Whitefly, Siphoninus Phillyreae (Haliday) (Hemiptera: Aleyrodidae) In South Korea And Its Potential Pathway Analysis, Seon Woo Lee, Hyun Jik Lee, Jun-Ran Kim, Soo-Jung Suh Dec 2021

Occurrence Of An Exotic Whitefly, Siphoninus Phillyreae (Haliday) (Hemiptera: Aleyrodidae) In South Korea And Its Potential Pathway Analysis, Seon Woo Lee, Hyun Jik Lee, Jun-Ran Kim, Soo-Jung Suh

Insecta Mundi

The ash whitefly, Siphoninus phillyreae (Haliday) (Hemiptera: Aleyrodidae), was first found in southern areas of South Korea during September 2019. During the survey of 2021, no additional specimens of the ash whitefly were found other than the previously reported regions. Attempts to trace a possible path­way for exotic ash whitefly suggested that this species probably followed pathways of illegal importation of infested plants from China or Japan and was unintentionally introduced into South Korea based on a survey-based study. This whitefly has not been intercepted at ports of entry to South Korea on imported plant material between 1999 and 2019 …


Two New Species Of Deromecus Solier From Guatemala (Coleoptera: Elateridae: Pomachiliini), E. R. Fuller Dec 2021

Two New Species Of Deromecus Solier From Guatemala (Coleoptera: Elateridae: Pomachiliini), E. R. Fuller

Insecta Mundi

Deromecus georginas Fuller, new species, and Deromecus longitarsis Fuller, new species (Cole­optera: Elateridae: Pomachiliini) are described from cloud forest habitat on eastern coastal volcanoes in Quetzaltenango Department, Guatemala, and compared with Deromecus trivittatus Champion from Mexico.

Se describen la neuva especie Deromecus georginas Fuller y la neuva especie Deromecus longitarsis Fuller (Coleoptera: Elateridae: Pomachiliini), del hábitat del bosque nuboso, de los volcanes oriental de la costa, en el Departmento de Quetzaltenango, Guatemala, y se comparan con Deromecus trivittatus Cham­pion, de México.

The Elateridae are a conspicuous and diverse group of beetles in Central America (Champion 1894–1897). Adults of luminous …


Micromentignatha Geberti, A New Tiger Beetle Species From Australia (Coleoptera: Cicindelidae), Jürgen Wiesner Dec 2021

Micromentignatha Geberti, A New Tiger Beetle Species From Australia (Coleoptera: Cicindelidae), Jürgen Wiesner

Insecta Mundi

Micromentignatha geberti (Coleoptera: Cicindelidae), new species, is described. It is distinguished from the other members of the genus by its larger body size and shape of elytral maculation.

Due to the kindness of Christian Kerkering, I was able to study specimens of a tiger beetle species he recently acquired. It proved to be new to science and is described herein. It is a member of Micromentignatha Sumlin, 1981, which raises the number of species in this genus to four (Wiesner 2020: 327). A key to distinguish these congeners as well as a catalog of the genus are given herein.


Ishtarella Thailandica Martens, New Genus, New Species (Hymenoptera: Braconidae: Aphidiinae) Of Aphid Parasitoid From Thailand, With A Country Checklist Of Aphidiinae, Abigail P. Martens, Matthew L. Buffington, Donald L.J. Quicke, Marisa Raweearamwong, Buntika A. Butcher, Paul J. Johnson Dec 2021

Ishtarella Thailandica Martens, New Genus, New Species (Hymenoptera: Braconidae: Aphidiinae) Of Aphid Parasitoid From Thailand, With A Country Checklist Of Aphidiinae, Abigail P. Martens, Matthew L. Buffington, Donald L.J. Quicke, Marisa Raweearamwong, Buntika A. Butcher, Paul J. Johnson

Insecta Mundi

Ishtarella Martens new genus (Hymenoptera: Braconidae: Aphidiinae) and I. thailandica Martens new species are described and illustrated from Doi Phu Kha National Park, Nan Province, Thailand. The genus is assigned to the tribe Aphidiini, subtribe Trioxina. Based on morphology, Ishtarella appears most closely related to Binodoxys Mackauer. An updated checklist of the aphidiine fauna of Thailand, based on published records, is presented.

Parasitoid wasps in the subfamily Aphidiinae (Hymenoptera: Braconidae) comprise about 60 genera and more than 650 species worldwide (Yu et al. 2016). The Aphidiinae of Thailand were all but unknown prior to a Thai­land Inventory Group for Entomological …


Nesting Behavior, Ecology, And Functional Morphology Of The Trapdoor Spider-Hunting Spider Wasp Aporus (Plectraporus) Hirsutus (Banks) (Hymenoptera: Pompilidae), Frank E. Kurczewski, Alice J. Abela, Rick C. West Dec 2021

Nesting Behavior, Ecology, And Functional Morphology Of The Trapdoor Spider-Hunting Spider Wasp Aporus (Plectraporus) Hirsutus (Banks) (Hymenoptera: Pompilidae), Frank E. Kurczewski, Alice J. Abela, Rick C. West

Insecta Mundi

Macrophotographs in series taken by Alice Abela on sandy coastal dunes in Santa Barbara and San Luis Obispo Counties, CA in 2010–2021 supplement and enhance F. X. Williams (1928) study of the ecol­ogy and nesting behavior of the trapdoor spider-hunting spider wasp Aporus (Plectraporus) hirsutus (Banks) (Hymenoptera: Pompilidae: Aporini). Abela’s macrophotographs and observations provide new details of adult wasp feeding, functional morphology, hunting, digging and prey transport, and host spider trapdoor, entrance, burrow structure, host capture and escape activity. Newly reported host records from this study and online photographs expand A. hirsutus host selection in the large wafer-lid …


New Larval Host Plants And Ecological Observations On North American Cerambycidae (Coleoptera), Josef Vlasak, Katerina Vlasakova Dec 2021

New Larval Host Plants And Ecological Observations On North American Cerambycidae (Coleoptera), Josef Vlasak, Katerina Vlasakova

Insecta Mundi

New larval hosts are presented for 152 North American Cerambycidae (Coleoptera). Larval host plants of Aneflus calvatus Horn in Leng, Aneflomorpha arizonica Linsley, Aneflomorpha fisheri Linsley, Ane­flomorpha opacicornis Linsley, Anelaphus magnipunctatus (Knull), Atylostagma glabra Schaeffer, Cacophrissus pauper Bates, Elytroleptus limpianus Skiles and Chemsak, Obrium rubidum LeConte, and Stenelytrana splen­dens (Knull) are reported for the first time. The types of wood utilized by larvae of Leptorhabdium pictum (Haldeman), Sphenostethus taslei (Buquet), Typocerus lugubris (Say), and Xestoleptura octonotata (Say) are discussed. Notes on larval morphology and larval habits of Aneflus spp. and Stenaspis solitaria (Say), includ­ing a correction of a published host …


Reevaluation Of The Described Subspecies Of Euphydryas Phaeton (Drury, 1773) With A Replacement Name For Melitaea Phaeton Schausi (Clark, 1927), Harry Pavulaan Dec 2021

Reevaluation Of The Described Subspecies Of Euphydryas Phaeton (Drury, 1773) With A Replacement Name For Melitaea Phaeton Schausi (Clark, 1927), Harry Pavulaan

The Taxonomic Report of the International Lepidoptera Survey

The present paper reevaluates the subspecific standing of the nominotypical and three described subspecies of Euphydryas phaeton (Drury, 1773). The nominotypical subspecies phaeton occupies the mid-Atlantic region, with undefined zones of contact with described subspecies borealis (F. Chermock & R. Chermock, 1940) to the north, and subspecies schausi (Clark, 1927) to the south. Nominotypical phaeton is an intermediate phenotype between borealis and schausi, which are each noticeably different from each other but both reasonably similar to intermediate (nominotypical) phaeton. Both borealis and schausi were synonymized under nominotypical phaeton since about time of their descriptions, by authors and list …


New Synonymies And Notes In Criodion Audinet-Serville (Coleoptera: Cerambycidae: Cerambycinae), Antonio Santos-Silva, Sergio Devesa Dec 2021

New Synonymies And Notes In Criodion Audinet-Serville (Coleoptera: Cerambycidae: Cerambycinae), Antonio Santos-Silva, Sergio Devesa

Insecta Mundi

Criodion angustatum Buquet, 1852 and C. pilosum Lucas, 1857 (Coleoptera: Cerambycidae: Cerambycinae) are synonymized with C. tomentosum Audinet-Serville, 1834. The holotypes of C. angustatum and C. hirsutum, and syntypes of C. pilosum and of C. tuberculatum Gahan, 1892 are illustrated for the first time. One of the type localities of C. tuberculatum is corrected.

Currently, Criodion Audinet-Serville, 1834 includes 13 species distributed from Guatemala to southern South America (Monné 2021; Tavakilian and Chevillotte 2021). Despite the relatively small number of species, they encompass several problems with their identification. For example, the specimens often identified as C. murinum Nonfried, 1895 …


Ardella Magnaemirabilis (Coleoptera: Scarabaeidae: Melolonthinae: Ardellini), A New Scarabaeoid Species, Genus And Tribe From The Southwestern United States, M. J. Paulsen Dec 2021

Ardella Magnaemirabilis (Coleoptera: Scarabaeidae: Melolonthinae: Ardellini), A New Scarabaeoid Species, Genus And Tribe From The Southwestern United States, M. J. Paulsen

Insecta Mundi

An interesting new taxon of scarabaeoid beetle is described from western Texas, USA. The remark­ably small chafer, Ardella magnaemirabilis new genus, new species (Coleoptera: Scarabaeidae: Melolonthinae: Ardellini) is described and compared to other diminutive scarabaeoid genera from drier habitats of the southwestern USA. The tribe Ardellini, new tribe, is erected to accommodate the unusual genus.

After a few centuries with entomologists scouring the continent, the discovery of unknown Nearctic scarab gen­era is no longer commonplace. The western United States, in particular, is biogeographically diverse with pockets of endemism that makes such discoveries still possible, driving collectors to continue sampling …


Phenological And Social Characterization Of Three Lasioglossum (Dialictus) Species Inferred From Long-Term Trapping Collections, Lyllian A.-J. Corbin, David N. Awde, Miriam H. Richards Dec 2021

Phenological And Social Characterization Of Three Lasioglossum (Dialictus) Species Inferred From Long-Term Trapping Collections, Lyllian A.-J. Corbin, David N. Awde, Miriam H. Richards

Entomology Faculty Publications

Detailed social and phenological data collected from nesting aggregations exist for relatively few sweat bee species because nesting aggregations are rarely found in large numbers, even when local populations are highly abundant. This limits researchers’ abilities to assess the social status of many species, which in turn, limits our ability to trace the sequence of evolutionary steps between alternative social states. To address this problem, we demonstrate the utility of rehydrated, pinned specimens from pan trap and netting collections for generating inferences about the phenology and social status of a well-studied sweat bee species, Lasioglossum (Dialictus) laevissimum. …


Effects Of A Novel Dsrna-Based Insecticide On The Colorado Potato Beetle, Samuel J. Pallis Dec 2021

Effects Of A Novel Dsrna-Based Insecticide On The Colorado Potato Beetle, Samuel J. Pallis

Electronic Theses and Dissertations

The Colorado potato beetle, Leptinotarsa decemlineata (Coleoptera: Chrysomelidae) is one of the most destructive pests of the cultivated potato, Solanum tuberosum. Colorado potato beetles have been devastating potato crops for the past 150 years and have expanded their range during that time, becoming a globally distributed agricultural pest. Potato beetles are well-suited to agricultural environments and have evolved some degree of resistance to virtually all chemical insecticides. As such, the development of novel control methods to both control potato beetle populations and manage the evolution of insecticide resistance are in constant demand

The knockdown of gene functioning through ribonucleic acid …


The Effects Of Boric Acid Sugar Bait On Wolbachia Trans-Infected Male Aedes Albopictus (Zap Males®) In Laboratory Conditions, Vindhya S. Aryaprema, Whitney A. Qualls, Karen L. Dobson, Stephen L. Dobson, Rui-De Xue Dec 2021

The Effects Of Boric Acid Sugar Bait On Wolbachia Trans-Infected Male Aedes Albopictus (Zap Males®) In Laboratory Conditions, Vindhya S. Aryaprema, Whitney A. Qualls, Karen L. Dobson, Stephen L. Dobson, Rui-De Xue

Entomology Faculty Publications

The field release of Wolbachia trans-infected male mosquitoes, as well as the use of toxic sugar baits, is a novel and promising candidate technique for integrated mosquito management programs. However, the methods of action of the two techniques may not be complementary, because the Wolbachia method releases mosquitoes into the environment expecting a wild population reduction in subsequent generations while the toxic baits are intended to reduce the wild population by killing mosquitoes. This laboratory study was conducted to evaluate the effectiveness of boric acid toxic sugar baits on Wolbachia trans-infected male Aedes albopictus, relative to wild-type Ae. albopictus …


Nondestructive Detection Of Codling Moth Infestation In Apples Using Pixel-Based Nir Hyperspectral Imaging With Machine Learning And Feature Selection, Nader Ekramirad, Alfadhl Y. Khaled, Lauren E. Doyle, Julia R. Loeb, Kevin D. Donohue, Raul T. Villanueva, Akinbode A. Adedeji Dec 2021

Nondestructive Detection Of Codling Moth Infestation In Apples Using Pixel-Based Nir Hyperspectral Imaging With Machine Learning And Feature Selection, Nader Ekramirad, Alfadhl Y. Khaled, Lauren E. Doyle, Julia R. Loeb, Kevin D. Donohue, Raul T. Villanueva, Akinbode A. Adedeji

Electrical and Computer Engineering Faculty Publications

Codling moth (CM) (Cydia pomonella L.), a devastating pest, creates a serious issue for apple production and marketing in apple-producing countries. Therefore, effective nondestructive early detection of external and internal defects in CM-infested apples could remarkably prevent postharvest losses and improve the quality of the final product. In this study, near-infrared (NIR) hyperspectral reflectance imaging in the wavelength range of 900–1700 nm was applied to detect CM infestation at the pixel level for three organic apple cultivars, namely Gala, Fuji and Granny Smith. An effective region of interest (ROI) acquisition procedure along with different machine learning and data processing …


Sap Beetles, Nick Volesky, Zachery R. Schrumm, Kalen Taylor Dec 2021

Sap Beetles, Nick Volesky, Zachery R. Schrumm, Kalen Taylor

All Current Publications

Sap beetles are typically considered a secondary pest of corn and overripe fruits and vegetables. They are broadly identified by their small and ovular bodies and club-shaped antennae. Adult sap beetles often feed on corn silk, pollen, and tassels. Larvae feed on kernels inside the husk. This fact sheet reviews how to identify sap beetles and their hosts and damage. It also provides ideas on how to monitor for sap beetles and outlines the options for managing them.


Comparing Macroinvertebrate Total Abundance And Total Biomass On Five Substrate Types From Upstream To Downstream On The North Branch Of The Au Sable River, Paul David Dingman Dec 2021

Comparing Macroinvertebrate Total Abundance And Total Biomass On Five Substrate Types From Upstream To Downstream On The North Branch Of The Au Sable River, Paul David Dingman

Masters Theses

The North Branch of the Au Sable River is located in the northern lower peninsula of Michigan and is known for prolific hatches of Ephemeroptera (mayflies), Trichoptera (caddisflies), and Plecoptera (stoneflies). Macroinvertebrates play an important role in processing and recycling organic material in rivers and are a valuable food source for trout. In 2018, anglers were reporting catching fewer numbers of brook and brown trout (Salmo trutta and Salvelinus fontinalis). The Michigan Department of Natural Resources (MDNR) determined significantly lower abundance than the historical average. We hypothesized that trout abundances were lower due to a lack of prey …


Seasonal Management Strategies For Tarnished Plant Bug, Lygus Lineolaris (Palisot De Beauvois), In Midsouth Cotton Production Systems, Ryan Taylor Mann Dec 2021

Seasonal Management Strategies For Tarnished Plant Bug, Lygus Lineolaris (Palisot De Beauvois), In Midsouth Cotton Production Systems, Ryan Taylor Mann

Theses and Dissertations

The tarnished plant bug, Lygus lineolaris (Palisot de Beauvois), is considered the most economically important pest of midsouth cotton. This study was designed to understand the impact of tarnished plant bug populations in the later weeks of flowering cotton and residual effects of novaluron with subsequent applications. Experiments evaluated dynamic threshold approaches in the later flowering period of midsouth cotton, the impacts of novaluron plus subsequent applications at the 3rd week of square, as well as residual properties in a laboratory experiment. Results suggest that a dynamic late season approach can reduce the amount of insecticide applications targeting tarnished …


Systematics And Population Structure Of Amblyomma Maculatum Group Ticks And Rickettsia Parkeri, An Emerging Human Pathogen In Southern Arizona, Usa, Michelle E.J. E Allerdice Dec 2021

Systematics And Population Structure Of Amblyomma Maculatum Group Ticks And Rickettsia Parkeri, An Emerging Human Pathogen In Southern Arizona, Usa, Michelle E.J. E Allerdice

Theses and Dissertations

The recent discovery of Amblyomma maculatum sensu lato (s. l.) ticks in southern Arizona has renewed discussions around species designations for members of the Amblyomma maculatum tick group. Amblyomma maculatum s. l. from Arizona appear to be morphologically intermediate between A. maculatum sensu stricto (s. s.) and A. triste s. s. At present there is no conclusive species designation for the ticks from Arizona. My research focused on analyzing the systematics of both A. maculatum s. l. and Rickettsia parkeri, a common bacterial pathogen transmitted by these ticks.

In the laboratory, A. maculatum s. l. from Arizona and A. maculatum …


Human Skin Triglycerides Prevent Bed Bug (Cimex Lectularius L.) Arrestment, Sudip Gaire, Zachary C. Devries, Russell Mick, Richard G. Santangelo, Grazia Bottillo, Emanuela Camera, Coby Schal Dec 2021

Human Skin Triglycerides Prevent Bed Bug (Cimex Lectularius L.) Arrestment, Sudip Gaire, Zachary C. Devries, Russell Mick, Richard G. Santangelo, Grazia Bottillo, Emanuela Camera, Coby Schal

Entomology Faculty Publications

Bed bugs (Cimex lectularius) have proliferated globally and have become one of the most challenging pests to control indoors. They are nocturnal and use multiple sensory cues to detect and orient towards their human hosts. After feeding, usually on a sleeping human, they return to a shelter on or around the sleeping surface, but not directly on the host. We hypothesized that although human skin odors attract hungry bed bugs, human skin compounds may also prevent arrestment on hosts. We used arrestment assays to test human skin swabs, extracts from human skin swabs, and pure compounds identified from …


Evidence Of Western Corn Rootworm (Diabrotica Virgifera Virgifera Leconte) Field-Evolved Resistance To Cry3bb1 + Cry34/ 35ab1 Maize In Nebraska, Jordan D. Reinders, Emily E. Reinders, Emily Robinson, Bryan W. French, Lance J. Meinke Dec 2021

Evidence Of Western Corn Rootworm (Diabrotica Virgifera Virgifera Leconte) Field-Evolved Resistance To Cry3bb1 + Cry34/ 35ab1 Maize In Nebraska, Jordan D. Reinders, Emily E. Reinders, Emily Robinson, Bryan W. French, Lance J. Meinke

Department of Entomology: Faculty Publications

BACKGROUND: Western corn rootworm (WCR; Diabrotica virgifera virgifera) field-evolved resistance to transgenic maize expressing the Cry3Bb1 protein derived from Bacillus thuringiensis (Bt) has been confirmed across the United States Corn Belt. Although use of pyramided hybrids expressing Cry3Bb1 + Cry34/35Ab1 has increased in recent years to mitigate existing WCR Bt resistance, susceptibility of Nebraska WCR populations to this rootworm–Bt pyramid has not been assessed. Plant-based bioassays were used to characterize the susceptibility of WCR populations to Cry3Bb1 and Cry3Bb1 + Cry34/35Ab1 maize. Populations were collected from areas of northeastern Nebraska with a history of planting Bt maize that expressed …


Validation Of Reference Genes For Quantitative Pcr In The Forest Pest, Ips Calligraphus, Mary Wallace, Lynne K. Rieske Dec 2021

Validation Of Reference Genes For Quantitative Pcr In The Forest Pest, Ips Calligraphus, Mary Wallace, Lynne K. Rieske

Entomology Faculty Publications

The six-spined ips, Ips calligraphus, is a North American bark beetle that can exploit most eastern North American Pinus species and can cause mortality. Biotic and abiotic disturbances weaken trees, creating breeding substrate that promotes rapid population growth. Management historically relied on silvicultural practices, but as forests become increasingly stressed, innovative management is needed. Manipulation of the cellular RNA interference (RNAi) pathway to induce gene silencing is an emerging means of insect suppression, and is effective for some bark beetles. Quantitative PCR (qPCR) is a powerful tool for analysis of gene expression, and is essential for examining RNAi. To …


Stink Bug (Hemiptera: Heteroptera: Pentatomidae) Ecology In Nebraska Agroecosystems, Blessing Ademokoya Dec 2021

Stink Bug (Hemiptera: Heteroptera: Pentatomidae) Ecology In Nebraska Agroecosystems, Blessing Ademokoya

Department of Entomology: Dissertations, Theses, and Student Research

Stink bugs (Hemiptera: Heteroptera: Pentatomidae) have gained considerable attention in Nebraska in the last decade due to increasing densities of native stink bug and spread of invasive species in the Midwest. Little is known about stink bug dynamics in Nebraska cropping systems. Based on data from a recent field survey, specimens at the University of Nebraska State Museum and the diagnostic lab of the Entomology Department at the University of Nebraska Lincoln, as well as published literature, we present a checklist of 72 species and subspecies of Pentatomidae (55 Pentatominae, 13 Asopinae, 3 Podopinae and 1 Edessinae) that occur in …


Use Of Attractant And Repellent Semiochemicals To Manage Stable Fly (Stomoxys Calcitrans (L.)) Populations On Pastured Cattle Using A Push-Pull Strategy, Alexander Thomas Lehmann Dec 2021

Use Of Attractant And Repellent Semiochemicals To Manage Stable Fly (Stomoxys Calcitrans (L.)) Populations On Pastured Cattle Using A Push-Pull Strategy, Alexander Thomas Lehmann

Department of Entomology: Dissertations, Theses, and Student Research

Stable flies (Diptera: Muscidae) are major economic pests of pastured cattle. Their feeding activity causes billions of dollars of damage to the cattle industry. This project investigated the management of stable flies on pastured cattle using a novel Push-Pull treatment in field trials. The repellent Push treatment, a hydrogenated coconut oil containing approximately 70% of C8, C10, and C12 fatty acids in a starch-pectin water formulation, was applied to the animals weekly. The Pull component was a stable fly trap augmented with an attractant (m-cresol). Permethrin and untreated controls were used as comparisons. Both permethrin and Push-Pull treatments reduced stable …


The Impact Of Beneficial Organisms In Corn Agroecosystems, Callie Rosalind Braley Dec 2021

The Impact Of Beneficial Organisms In Corn Agroecosystems, Callie Rosalind Braley

Doctor of Plant Health Program: Dissertations and Other Student Research

Corn is one of the world’s, and Nebraska’s, most important crops. Millions of acres are planted to corn each year in the Cornhusker State. However, each year there are a plethora of arthropod, weed, and microorganism pests that rob farmers of reaching their maximum yield potential. There are many options available to manage these pests in corn agroecosystems, but one option is often underutilized: beneficial organisms. For each pest, there are a variety of natural enemies that can assist in mitigating the damage caused by pests.

Many beneficial organisms exist, and they can be grouped by the type of pest …


Examination Of Cajeput Oil (Melaleuca Cajuputi) Phytochemicals As Tools To Manage The Yellow Fever Mosquito (Aedes Aegypti L.), Ellis Johnson Dec 2021

Examination Of Cajeput Oil (Melaleuca Cajuputi) Phytochemicals As Tools To Manage The Yellow Fever Mosquito (Aedes Aegypti L.), Ellis Johnson

Department of Entomology: Dissertations, Theses, and Student Research

The yellow fever mosquito, Aedes aegypti L., is among the most important insects as it pertains to public health. It vectors several health-endangering pathogens, including yellow fever, dengue fever, chikungunya, and Zika viruses. Insecticides are among the most effective tools used to manage mosquito populations however, their efficacy to manage mosquito populations is being threatened by insecticide resistance. This ongoing threat warrants new chemical strategies to reduce or incapacitate a mosquito population capable of pathogen transmission. Plant essential oils are candidates for identifying novel management tools for disease-vectoring arthropods. Commercially, essential oils have been used for pharmaceuticals, flavoring, fragrances, cosmetics, …


Cardenolide, Potassium, And Pyrethroid Insecticide Combinations Reduce Growth And Survival Of Monarch Butterfly Caterpillars (Lepidoptera: Nymphalidae), Annie J. Krueger, Emily A. Robinson, Thomas J. Weissling, Ana M. Vélez, Troy D. Anderson Dec 2021

Cardenolide, Potassium, And Pyrethroid Insecticide Combinations Reduce Growth And Survival Of Monarch Butterfly Caterpillars (Lepidoptera: Nymphalidae), Annie J. Krueger, Emily A. Robinson, Thomas J. Weissling, Ana M. Vélez, Troy D. Anderson

Department of Entomology: Faculty Publications

The monarch butterfly, Danaus plexippus L., has evolved to be insensitive to milkweed cardenolides via genetic modifications of Na+/K+-ATPase. There is concern for insecticide exposures near agriculture, with little information on monarch caterpillar toxicology. It is unclear how cardenolide insensitivity may affect the sensitivity of monarch caterpillars to pyrethroid insecticides. Additionally, potassium fertilizers may affect monarch caterpillar physiology and cardenolide sequestration. Here, we investigated the growth, survival, and development of caterpillars exposed to the cardenolide ouabain, bifenthrin, and potassium chloride (KCl) alone and in combination. Caterpillars were either exposed to (1) ouabain from third- to fifth-instar …


The Mayfly Newsletter, Donna Giberson, Peter M. Grant Dec 2021

The Mayfly Newsletter, Donna Giberson, Peter M. Grant

The Mayfly Newsletter

The Mayfly Newsletter is the official newsletter of the Permanent Committee of the International Conferences on Ephemeroptera.


Effects Of "Lemongrass Factor" On Galleria Mellonella Hemocytes, Jennifer C. Rice Dec 2021

Effects Of "Lemongrass Factor" On Galleria Mellonella Hemocytes, Jennifer C. Rice

MSU Graduate Theses

The use of conventional chemical insecticides to control agricultural pest has become problematic as they may have a negative impact towards human health and the environment, resulting in a need to research alternative methods to insect pest control. Plant derived substances like essential oils have been used for generations as toxicants, repellants, and anti-feedants to control agricultural pest. More research is needed to understand how insect immune systems react to essential oils and if cellular immune responses of phagocytosis, encapsulation, and nodulation can be inhibited by such. Subjecting Galleria mellonella to various concentrations of “lemongrass factor” lets the researcher/scientist know …


A Preliminary Investigation Into The Effects Of Lucilia Sericata (Meigen) Blow Fly Larval Feeding On Sharp Force Trauma (Sft) Wound Patterns In Decomposing Bones Of Sus Scrofa Domesticus, Erica L. Klafehn Dec 2021

A Preliminary Investigation Into The Effects Of Lucilia Sericata (Meigen) Blow Fly Larval Feeding On Sharp Force Trauma (Sft) Wound Patterns In Decomposing Bones Of Sus Scrofa Domesticus, Erica L. Klafehn

Student Theses

An important aspect of forensic investigations involves the characterization and analysis of bone related trauma as this can provide valuable information regarding the manner and circumstances of death. Bone trauma can be classified into three main categories, which include Sharp Force Trauma (SFT), Blunt Force Trauma (BFT), and Gunshot Trauma. Previous experiments have explored SFT on flesh and bones, specifically made with knives or saws, coupled with various microscopic analytical methods. Minimal research has been done integrating both a forensic entomology and forensic anthropology approach, so it is imperative to understand previous literature detailing the behaviors of insects (blow flies), …


Evidence Of Western Corn Rootworm (Diabrotica Virgifera Virgifera Leconte) Field-Evolved Resistance To Cry3bb1 + Cry34/35ab1 Maize In Nebraska, Jordan Reinders, Emily E. Reinders, Emily Robinson, Brian W. French, Lance J. Meinke Dec 2021

Evidence Of Western Corn Rootworm (Diabrotica Virgifera Virgifera Leconte) Field-Evolved Resistance To Cry3bb1 + Cry34/35ab1 Maize In Nebraska, Jordan Reinders, Emily E. Reinders, Emily Robinson, Brian W. French, Lance J. Meinke

Department of Entomology: Faculty Publications

BACKGROUND: Western corn rootworm (WCR; Diabrotica virgifera virgifera) field-evolved resistance to transgenic maize expressing the Cry3Bb1 protein derived from Bacillus thuringiensis (Bt) has been confirmed across the United States Corn Belt. Although use of pyramided hybrids expressing Cry3Bb1 + Cry34/35Ab1 has increased in recent years to mitigate existing WCR Bt resistance, susceptibility of Nebraska WCR populations to this rootworm–Bt pyramid has not been assessed. Plant-based bioassays were used to characterize the susceptibility of WCR populations to Cry3Bb1 and Cry3Bb1 + Cry34/35Ab1 maize. Populations were collected from areas of northeastern Nebraska with a history of planting Bt maize that expressed Cry3Bb1 …