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

Entomology Commons

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

9,406 Full-Text Articles 9,961 Authors 1,818,377 Downloads 141 Institutions

All Articles in Entomology

Faceted Search

9,406 full-text articles. Page 7 of 228.

Simpson (Geddes W.) Records, 1928-1989, Special Collections, Raymond H. Fogler Library, University of Maine 2019 The University of Maine

Simpson (Geddes W.) Records, 1928-1989, Special Collections, Raymond H. Fogler Library, University Of Maine

Finding Aids

Geddes Wilson Simpson received an A.B. in zoology from Bucknell University in 1929 and an A.M. in insect morphology from Cornell University in 1931. In 1935 he completed a Ph.D. in economic entomology at Cornell.

In 1931, Simpson joined the staff of the Maine Agricultural Experiment Station at the University of Maine. As a research entomologist, he gained national recognition for his work on aphids, especially those affecting potato plants. In 1952, Simpson was named professor of entomology at UMaine. He remained in that position until his retirement in 1974. For many years he was editor of ...


Trade-Offs Shape Carotenoid-Based Color Variation In Redheaded Pine Sawfly (Neodiprion Lecontei) Larvae, Maranda Gaines 2019 University of Kentucky

Trade-Offs Shape Carotenoid-Based Color Variation In Redheaded Pine Sawfly (Neodiprion Lecontei) Larvae, Maranda Gaines

Lewis Honors College Capstone Collection

Carotenoids serve various ecological roles in animals including coloration, immune responses, and vision. Carotenoid-derived coloration is greatly emphasized in the literature, particularly relating to mate choice and aposematic warning. However, the trade-offs between the color and non-color functions of carotenoids are not thoroughly explored. In the redheaded pine sawfly (Neodiprion lecontei), some larval populations have yellow pigmentation, using carotenoids derived from their diets for aposematic warning coloration. Other larval populations are white in color, having genetically lost the ability to produce the yellow pigment. Because carotenoids are essential to life functions in both the yellow and white populations, we aim ...


Abundance And Diversity Of Grasshoppers And Their Ectoparasitic Mites In South Dakota, Erica Anderson 2019 South Dakota State University

Abundance And Diversity Of Grasshoppers And Their Ectoparasitic Mites In South Dakota, Erica Anderson

Electronic Theses and Dissertations

In South Dakota, grasshoppers (Orthoptera: Acrididae) are sporadic pests that can cause economic injury to rangeland and crops during outbreaks. It is important to know which grasshopper species are present as not all have the same potential to cause damage. USDA-APHIS conducts annual grasshopper surveys in western South Dakota rangelands, but the last published survey was in 1925. Of the potential biological control agents existing, grasshopper mites feed on grasshopper eggs and the larvae are ectoparasites of nymph and adult grasshoppers. Previous studies suggest that mite larvae reduce grasshopper fecundity and mobility, making them useful for integrated pest management of ...


Maximizing Ecosystem Services Provided To The New Oil Crop Brassica Carinata Through Landscape And Arthropod Diversity, Shane Stiles 2019 South Dakota State University

Maximizing Ecosystem Services Provided To The New Oil Crop Brassica Carinata Through Landscape And Arthropod Diversity, Shane Stiles

Electronic Theses and Dissertations

Prairies, once spanning the Upper Midwest, have now largely been replaced by agriculture. The lack of resources available to pollinators in agricultural fields and the practices employed by farmers to maximize yield has led to a decline in insect and pollinator diversity. There is a need to better understand how ecosystem services provided by a diverse insect community scale to current farming practices as they relate to crop yield. We sought to explain how landscape heterogeneity relates to insect and pollinator diversity, as well as how insect diversity relates to crop yield across common farming practices. To evaluate how farming ...


High Resolution Modeling Of Tick Density And Detection Of Rickettsia Spp. In Dermacentor Spp. Ticks At Turnbull National Wildlife Refuge, Wa, Justin L. Donahue 2019 Eastern Washington University

High Resolution Modeling Of Tick Density And Detection Of Rickettsia Spp. In Dermacentor Spp. Ticks At Turnbull National Wildlife Refuge, Wa, Justin L. Donahue

EWU Masters Thesis Collection

The tick species Dermacentor andersoni and Dermacentor variabilis are known vectors of pathogens. One such pathogen is the bacteria Rickettsia rickettsii, which causes Rocky Mountain spotted fever. The detection of this bacterium in ticks at Turnbull National Wildlife Refuge (TNWR) indicates a potential risk to human health. In order to follow up on this discovery, we had two separate objectives. First we developed a high resolution predictive map for Dermacentor spp. distribution across the public use area of TNWR. To do so, 50m transects (27 in total) were established across the public use area. Ticks were collected weekly within the ...


Reduced File Size: Quick And Easy Guide To Common Butterflies: An Introduction To The 25 Most Commonly Encountered Butterflies In The Midwest, Paul V. Switzer 2018 Eastern Illinois University

Reduced File Size: Quick And Easy Guide To Common Butterflies: An Introduction To The 25 Most Commonly Encountered Butterflies In The Midwest, Paul V. Switzer

Paul V. Switzer

If you are new to butterfly watching, this is the book for you! It covers 25 of the most commonly encountered butterflies in the Midwestern U.S. Learning these common species will give you a great start in your discovery of the more than 100 butterfly species in our region, many of which look very similar to those included in this guide. 


Quick And Easy Guide To Common Butterflies: An Introduction To The 25 Most Commonly Encountered Butterflies In The Midwest, Paul V. Switzer 2018 Eastern Illinois University

Quick And Easy Guide To Common Butterflies: An Introduction To The 25 Most Commonly Encountered Butterflies In The Midwest, Paul V. Switzer

Paul V. Switzer

If you are new to butterfly watching, this is the book for you! It covers 25 of the most commonly encountered butterflies in the Midwestern U.S. Learning these common species will give you a great start in your discovery of the more than 100 butterfly species in our region, many of which look very similar to those included in this guide. 


Intraguild Predation: Interactions Between Predators, Pathogens, And Their Shared Resources In Crop Pest Communities, Andrew Jason Flick 2018 Louisiana State University and Agricultural and Mechanical College

Intraguild Predation: Interactions Between Predators, Pathogens, And Their Shared Resources In Crop Pest Communities, Andrew Jason Flick

LSU Doctoral Dissertations

Crop pest management requires an understanding of the complex interactions among pest species that potentially damage crop yield and species that may be crucial for controlling pest species outbreaks. For example, predators, parasitoids, and pathogens are constantly interacting via their shared prey or hosts. Predators may prefer infected prey, which can be easier to catch; however, infected prey may be less nutritious or even lethal for predators. These interactions then dictate the short-term dynamics of host and pathogen as well as between prey and predator. "How these dynamics change as the species in the system change either empirically or theoretically ...


Quantifying Bee Assemblages And Attractiveness Of Flowering Woody Landscape Plants For Urban Pollinator Conservation, Bernadette M. Mach, Daniel A. Potter 2018 University of Kentucky

Quantifying Bee Assemblages And Attractiveness Of Flowering Woody Landscape Plants For Urban Pollinator Conservation, Bernadette M. Mach, Daniel A. Potter

Entomology Faculty Publications

Urban and suburban landscapes can be refuges for biodiversity of bees and other pollinators. Public awareness of declining pollinator populations has increased interest in growing plants that provide floral resources for bees. Various publications and websites list “bee-friendly” plants, but such lists are rarely based on empirical data, nor do they emphasize flowering trees and shrubs, which are a major component of urban landscapes. We quantified bee visitation to 72 species of flowering woody landscape plants across 373 urban and suburban sites in Kentucky and southern Ohio, USA, sampling and identifying the bee assemblages associated with 45 of the most ...


A Change In Grain? Diet Induced Plasticity In The Generalist Grasshopper Melanoplus Differentialis, Austin M. Culotta 2018 University of New Orleans

A Change In Grain? Diet Induced Plasticity In The Generalist Grasshopper Melanoplus Differentialis, Austin M. Culotta

University of New Orleans Theses and Dissertations

Phenotypic plasticity is favored in heterogeneous environments in which alternative phenotypes can exploit alternative resources. However, it’s not clear whether phenotypic plasticity is useful in environments that become more homogenous over an organism’s life cycle. I studied a population of grasshopper Melanoplus differentialis that experiences high resource diversity as nymphs but low resource diversity as adults to determine if individuals can undergo diet-induced morphological plasticity in head shape to increase biting ability and ingestion of hard diets. Insects on a soft diet were larger and had greater bite force than those on a hard diet. Head structures related ...


The Beetle Chronicler, Chris Dunker, Kayla Wolf, Brett Ratcliffe 2018 Lincoln Journal Star

The Beetle Chronicler, Chris Dunker, Kayla Wolf, Brett Ratcliffe

Papers in Entomology

Longtime UNL entomologist names beetles for dragons

Gymnetis rhaegali, Gymnetis drogoni, Gymnetis viserioni, Ambyoproctus boondocksius, Cyclocephala nadanotherwon, Strategus longichomperus

University of Nebraska entomology professor Brett Ratcliffe, who also curates the Nebraska State Museum's beetle collection, shows elephant beetles, a member of the scarab beetle family, in his office in Nebraska Hall.

Unlike their namesakes, three species of scarab beetles newly described by University of Nebraska-Lincoln entomologist Brett Ratcliffe do not breathe fire. Or, at least, entomologists and field researchers haven't observed them doing so.

Nor do the scarabs have the thick, reptilian scales and leathery wings like the ...


The Evolution Of Diet Breadth In Melissodes Bees (Apidae: Eucerini), Karen W. Wright 2018 University of New Mexico - Main Campus

The Evolution Of Diet Breadth In Melissodes Bees (Apidae: Eucerini), Karen W. Wright

Biology ETDs

The relationship between phytophagous insects and their host plants has interested scientists since Darwinian times. Using modern phylogenetic inference, we are able to investigate these patterns using, not only the phylogenies of the insects, but the evolutionary relationships among the plants they feed on as well. The relationships between bees and the plants they pollinate were traditionally seen as mutualistic and were treated separately from the research investigating the antagonistic relationships between phytophagous insects and their host plants. However, recent phylogenetic studies have made great progress including bee-host relationships in with the larger body of work on phytophagous insects.

The ...


Epigenetic Modifications Acetylation And Deacetylation Play Important Roles In Juvenile Hormone Action, Amit Roy, Subba Reddy Palli 2018 University of Kentucky

Epigenetic Modifications Acetylation And Deacetylation Play Important Roles In Juvenile Hormone Action, Amit Roy, Subba Reddy Palli

Entomology Faculty Publications

Background: Epigenetic modifications including DNA methylation and post-translational modifications of histones are known to regulate gene expression. Antagonistic activities of histone acetyltransferases (HATs) and histone deacetylases (HDACs) mediate transcriptional reprogramming during insect development as shown in Drosophila melanogaster and other insects. Juvenile hormones (JH) play vital roles in the regulation of growth, development, metamorphosis, reproduction and other physiological processes. However, our current understanding of epigenetic regulation of JH action is still limited. Hence, we studied the role of CREB binding protein (CBP, contains HAT domain) and Trichostatin A (TSA, HDAC inhibitor) on JH action.

Results: Exposure of Tribolium castaneum cells ...


Inferring Processes Of Coevolutionary Diversification In A Community Of Panamanian Strangler Figs And Associated Pollinating Wasps, Jordan D. Satler, Edward Allen Herre, K. Charlotte Jandér, Deren A. R. Eaton, Carlos A. Machado, Tracy A. Heath, John D. Nason 2018 Iowa State University

Inferring Processes Of Coevolutionary Diversification In A Community Of Panamanian Strangler Figs And Associated Pollinating Wasps, Jordan D. Satler, Edward Allen Herre, K. Charlotte Jandér, Deren A. R. Eaton, Carlos A. Machado, Tracy A. Heath, John D. Nason

Ecology, Evolution and Organismal Biology Publications

The fig and pollinator wasp obligate mutualism is diverse (~750 described species), ecologically important, and ancient (~80-90 Ma), providing model systems for generating and testing many questions in evolution and ecology. Once thought to be a prime example of strict one-to-one cospeciation, current thinking suggests that genera of pollinator wasps coevolve with corresponding subsections of figs, but the degree to which cospeciation or other processes contributes to the association at finer scales is unclear. Here we use genome-wide sequence data from a community of Panamanian strangler figs (Ficus subgenus Urostigma, section Americana) and associated fig wasp pollinators (Pegoscapus spp.) to ...


Reducing Protected Lands In A Hotspot Of Bee Biodiversity: Bees Of Grand Staircase-Escalante National Monument, Joseph S. Wilson, Matt Kelly, Olivia Messinger Carril 2018 Utah State University

Reducing Protected Lands In A Hotspot Of Bee Biodiversity: Bees Of Grand Staircase-Escalante National Monument, Joseph S. Wilson, Matt Kelly, Olivia Messinger Carril

Biology Faculty Publications

Grand Staircase-Escalante National Monument is a federally protected area found in central southern Utah. Designated in 1996 by President William J. Clinton, it was recently reduced in size by President Donald J. Trump in a proclamation that turned the one large monument into three smaller ones. A long-term, standardized study of the bees had been conducted from 2000–2003, revealing 660 species. The bee communities of the area are characterized by being spatially heterogeneous; most of the bees occur in isolated areas, with only a few being both abundant and widespread. Here we examine what affect the recent resizing of ...


Ray Et Al.: Pheromone Of The Velvet Longhorned Beetle Trichoferus Campestris, Ann M. Ray, Joseph A. Francese, Yunfan Zou, Kristopher Watson, Damon J. Crook, Jocelyn G. Millar 2018 Xavier University

Ray Et Al.: Pheromone Of The Velvet Longhorned Beetle Trichoferus Campestris, Ann M. Ray, Joseph A. Francese, Yunfan Zou, Kristopher Watson, Damon J. Crook, Jocelyn G. Millar

Faculty Scholarship

No abstract provided.


Patterns Of Authorship In Ecology And Evolution: First, Last, And Corresponding Authorship Vary With Gender And Geography, Charles W. Fox, Josiah P. Ritchey, C. E. Timothy Paine 2018 University of Kentucky

Patterns Of Authorship In Ecology And Evolution: First, Last, And Corresponding Authorship Vary With Gender And Geography, Charles W. Fox, Josiah P. Ritchey, C. E. Timothy Paine

Entomology Faculty Publications

The position of an author on the byline of a paper affects the inferences readers make about their contributions to the research. We examine gender differences in authorship in the ecology literature using two datasets: submissions to six journals between 2010 and 2015 (regardless of whether they were accepted), and manuscripts published by 151 journals between 2009 and 2015. Women were less likely to be last (i.e., “senior”) authors (averaging ~23% across journals, years, and datasets) and sole authors (~24%), but more likely to be first author (~38%), relative to their overall frequency of authorship (~31%). However, the proportion ...


Viral Prevalence Among Social Bees In Different Landscapes, Tugce Karacoban 2018 University of Nebraska - Lincoln

Viral Prevalence Among Social Bees In Different Landscapes, Tugce Karacoban

Dissertations and Student Research in Entomology

Honey bees and wild bees provide important pollination services to numerous crops and native plants. In recent years, declines in bee populations have highlighted the importance of the ecological services they provide and the need for more research into the reasons for their decline. Currently, many conservation efforts to mitigate bee losses include increasing forage and habitat, however, there is growing concern over the role interspecific pathogen transmission plays in bee decline. Viruses commonly found in honey bees may be transmitted and pose a threat to other bee species when bees come together at foraging sites. To elucidate the impact ...


The Biological Significance And Utility Of Feeding By Dermestes Maculatus, Braymond Adams 2018 University of Nebraska - Lincoln

The Biological Significance And Utility Of Feeding By Dermestes Maculatus, Braymond Adams

Dissertations & Theses in Natural Resources

With their efficient feeding habits and tolerance to very low moisture and humidity, beetles in the Family Dermestidae are especially adapted to variable environments and habitats. Dermestid cultures have been in use since 1922 in cleaning tissue and flesh from bones, and proven benefit in multiple fields, including zoology, ornithology, and forensics. Dermestid feeding behaviors when coupled with known life stage and insect succession information aids in providing significant entomological evidence. However, the feeding activities of insects, like those of vertebrate scavengers and predators, change remains and may leave artifacts that can be sometimes be difficult to assign to a ...


Spotted Wing Drosophila (Drosophila Suzukii) In Arkansas: Winter Morphs, Wild Hosts, And Fungal Control, Rosalee Knipp 2018 University of Arkansas, Fayetteville

Spotted Wing Drosophila (Drosophila Suzukii) In Arkansas: Winter Morphs, Wild Hosts, And Fungal Control, Rosalee Knipp

Theses and Dissertations

Drosophila suzukii (Matsumura), or spotted wing drosophila (SWD), is an invasive fruit fly pest that was first found in the United States in 2008. Unlike native Drosophila, SWD females have a serrated ovipositor that allows them to attack ripening fruit. Since its introduction, it is unclear how and where they overwinter in Arkansas, what local hosts they utilize and what potential alternative tactics can be used to combat this pest. In states north of Arkansas, winter morphs (WM) of SWD are larger, darker pigmented, and can survive colder temperatures than SWD flies found in the summer. These WM were found ...


Digital Commons powered by bepress