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Articles 1 - 30 of 55
Full-Text Articles in Entomology
Assessing The Performance Of A 3d Printed Pennsylvania-Style Black Light Moth Trap, Christopher B. Brown, Eva S. Conley, Peter White
Assessing The Performance Of A 3d Printed Pennsylvania-Style Black Light Moth Trap, Christopher B. Brown, Eva S. Conley, Peter White
The Great Lakes Entomologist
Passive light traps have long been a popular method used for trapping moths and other night-flying insects. Recent changes in the availability of equipment necessitate the development of accessible and effective alternatives for insect monitoring. This study assesses the performance of a 3D-printed Pennsylvania-style black light moth trap compared to the formerly available commercial BioQuip trap and investigates the impact of funnel size on catch rates. Our 3D-printed trap was compared to the BioQuip trap over ten trap-nights in Central Michigan. Results indicate that commercial BioQuip traps consistently captured significantly more moths than the 3D-printed prototype. An additional experiment evaluating …
Using Insecticidal Compounds To Elucidate The Potential Role Of Neurotransmitters In Lepidoptera Pupal Ecdysis, Niranjana Krishnan, Cassandra Gorman, Jillian Stewart, Steven Bradbury, Russell Jurenka
Using Insecticidal Compounds To Elucidate The Potential Role Of Neurotransmitters In Lepidoptera Pupal Ecdysis, Niranjana Krishnan, Cassandra Gorman, Jillian Stewart, Steven Bradbury, Russell Jurenka
Biological Sciences Faculty Research & Creative Works
Previously, we reported final-instar lepidopteran larvae exposed to low doses of imidacloprid, clothianidin, and thiamethoxam had arrest in pupal ecdysis, which is a novel adverse outcome for neonicotinoid insecticides. Since neonicotinoids disrupt acetylcholine signaling, we hypothesized that the excitatory neurotransmitter acetylcholine plays a critical role in regulation of pupal ecdysis, likely by modulating the release of peptides from crustacean cardioactive peptide (CCAP) neurons. In this paper, using two lepidopteran species, we undertook studies with five additional nicotinic acetylcholine receptor (nAChR) agonists and three muscarinic acetylcholine receptor (mAChR) agonists to hypothesize the putative nAChR subunits that mediate pupal ecdysis. We also …
Diversity Of Butterflies (Lepidoptera) In Kanju, District Swat, Khyber Pakhtunkhwa, Pakistan, Said Miraj Ud Din, Khushbakht Asad, Hamid Ur Rahman, Attiya Iqbal
Diversity Of Butterflies (Lepidoptera) In Kanju, District Swat, Khyber Pakhtunkhwa, Pakistan, Said Miraj Ud Din, Khushbakht Asad, Hamid Ur Rahman, Attiya Iqbal
Journal of Bioresource Management
Butterflies are one of the most beautiful creatures on earth. They belong to the phylum Arthropoda, class Insecta, and order Lepidoptera. Butterflies play an important role in the ecosystem, contributing significantly to pollen transfer. They play an important role in pollination, and their foraging behavior enhances the genetic diversity. Additionally, they also play an important role in the food chain and serve as prey for birds, reptiles, and other insectivore organisms. The current study was conducted to find out the diversity and distribution of butterflies in Kanju district Swat, Khyber Pakhtunkhwa, Pakistan. A total 203 specimens were collected from August …
Examining The Performance Of An Insect Generalist Reared On Unused Host Plants In Colorado, Maxwell J. Meyer, Kanshita Dam, Kailey G. Hicks, Emma J. Sellers, Mykaela M. Tanino-Springsteen, Jd Reigrut, Dhaval K. Vyas, Shannon M. Murphy
Examining The Performance Of An Insect Generalist Reared On Unused Host Plants In Colorado, Maxwell J. Meyer, Kanshita Dam, Kailey G. Hicks, Emma J. Sellers, Mykaela M. Tanino-Springsteen, Jd Reigrut, Dhaval K. Vyas, Shannon M. Murphy
DU Undergraduate Research Journal Archive
Dietary generalist insects are important to ecological communities because they are commonly found in many environments and play important roles in ecosystem services like pollination and decomposition. Although dietary generalist herbivores eat a broad range of plant species, regional populations of these species may have significantly narrower or specialized diet breadths. Fall webworm (Hyphantria cunea, hereafter FW) is a dietary generalist at the species level, but we do not know if there is dietary generalism at the population level or how generalism varies across populations. In Colorado, FW larvae feed on only a few plant species, but many plant species …
Biochar Suppresses Growth, Pupation And Eclosion Success Of A Specialist (Manduca Sexta) And A Generalist (Spodoptera Frugiperda) Insect Herbivore, Nischal Wagle, Soumya Unnikrishnan, Satinderpal Kaur, Engil Pereira, Rupesh Kariyat
Biochar Suppresses Growth, Pupation And Eclosion Success Of A Specialist (Manduca Sexta) And A Generalist (Spodoptera Frugiperda) Insect Herbivore, Nischal Wagle, Soumya Unnikrishnan, Satinderpal Kaur, Engil Pereira, Rupesh Kariyat
Entomology and Plant Pathology Faculty Publications and Presentations
Biochar is a charcoal-like substance made by the pyrolysis of organic material from agricultural and forestry waste. While biochar is well documented for altering soil physicochemical conditions, few studies have investigated its possible effects on the management of arthropod pests. Tobacco hornworm (Manduca sexta) and fall armyworm (Spodoptera frugiperda, FAW) are specialist and generalist insect herbivores respectively, that can cause significant defoliation in natural and agricultural ecosystems. In this study, we examined whether walnut shell biochar can affect growth and development of these herbivores. Specifically, we investigated how biochar influences parameters such as mass gain, length of pupation, pupal mass, …
Raising Red Flags: Exploring Phenotypic Change In Tiger Moths (Apantesis) Of Coastal Sc Over 50 Years' Time, Allison K. Fletcher
Raising Red Flags: Exploring Phenotypic Change In Tiger Moths (Apantesis) Of Coastal Sc Over 50 Years' Time, Allison K. Fletcher
Senior Theses
Organismal phenotypes play a critical role in ecological interactions and individual fitness, and they may undergo rapid shifts through evolutionary adaptation or phenotypic plasticity in response to climate change and environmental disturbances. As morphological traits such as body size, melanization, and aposematic coloration are especially significant for thermoregulation and predator deterrence, it is important to understand the ways in which these traits may be changing on a regional level. Here, I examined the change in phenotype in populations of three tiger moth (Apantesis) species from a single site in coastal South Carolina over a fifty-year period, testing for differences in …
Moths Of The Douglas Lake Region (Emmet And Cheboygan Counties), Michigan: Viii. Gelechiidae (Lepidoptera), Brian Scholtens
Moths Of The Douglas Lake Region (Emmet And Cheboygan Counties), Michigan: Viii. Gelechiidae (Lepidoptera), Brian Scholtens
The Great Lakes Entomologist
98 species of Gelechiidae (Lepidoptera) including 46 state records are documented from Emmet and Cheboygan Counties at the northern tip of the Lower Peninsula of Michigan. This is the first comprehensive listing of this family from anywhere in the region, probably because positive identification in this family often requires genitalic dissection. This list brings the total number of Lepidopteran species known from the University of Michigan Biological Station area to 1265.
Mechanisms Of Rnai In Insects, Jin Mo Koo
Mechanisms Of Rnai In Insects, Jin Mo Koo
Theses and Dissertations--Entomology
RNA interference (RNAi) mechanism is found in many eukaryotes and animal cells, with its endogenous functions as defense against transposable elements and viruses, as well as post transcriptional regulation of gene expression. Since its first discovery, RNAi has contributed enormously as a reverse genetic tool for functional genomic studies. In application, RNAi is used in therapeutics, as well as agricultural crop and livestock protection. Yet, for the wider application of RNAi, improvement of its potency and delivery technologies is needed. Deeper mechanistic understanding of every step of RNAi, from cellular uptake of RNAi trigger molecule to targeted mRNA degradation is …
Lepidopterans Of Economic Importance In Cameroon: A Systematic Review, José Ouaba, Timoléon Tchuinkam, Alida Waïmane, Henlay Juma Otieno Magara, Saliou Niassy, Félix Meutchieye
Lepidopterans Of Economic Importance In Cameroon: A Systematic Review, José Ouaba, Timoléon Tchuinkam, Alida Waïmane, Henlay Juma Otieno Magara, Saliou Niassy, Félix Meutchieye
All Peer-Reviewed Publications
Lepidoptera represents one of the most abundant and diverse insect groups globally, with more than 178,159 species described in more than 4000 genera. This paper discusses the economic importance of these insects in Cameroon. The work was built on a comprehensive review of 60 relevant published articles from 1955 to 2021. Results show a great diversity of insects of economic importance belonging to the order Lepidoptera, of which 51 are known at the species level, eleven at the genus level, and many others not yet identified. Their economic importance is somehow conflicting, with a mix of harmful and beneficial species. …
Monarch Butterfly (Danaus Plexippus) Life-Stage Risks From Foliar And Seed-Treatment Insecticides, Niranjana Krishnan, Yang Zhang, Melanie E. Aust, Richard L. Hellmich, Joel R. Coats, Steven P. Bradbury
Monarch Butterfly (Danaus Plexippus) Life-Stage Risks From Foliar And Seed-Treatment Insecticides, Niranjana Krishnan, Yang Zhang, Melanie E. Aust, Richard L. Hellmich, Joel R. Coats, Steven P. Bradbury
Biological Sciences Faculty Research & Creative Works
Conservation of North America's eastern monarch butterfly (Danaus plexippus) population would require establishment of milkweed (Asclepias spp.) and nectar plants in the agricultural landscapes of the north central United States. A variety of seed-treatment and foliar insecticides are used to manage early- and late-season pests in these landscapes. Thus, there is a need to assess risks of these insecticides to monarch butterfly life stages to inform habitat conservation practices. Chronic and acute dietary toxicity studies were undertaken with larvae and adults, and acute topical bioassays were conducted with eggs, pupae, and adults using 6 representative insecticides: beta-cyfluthrin …
Evaluation Of The Taxonomic Status Of Eurytides Marcellus Form “Floridensis” (W. Holland, 1898) (Papilionoidea, Papilioninae, Leptocircini), Harry Pavulaan
Evaluation Of The Taxonomic Status Of Eurytides Marcellus Form “Floridensis” (W. Holland, 1898) (Papilionoidea, Papilioninae, Leptocircini), Harry Pavulaan
The Taxonomic Report of the International Lepidoptera Survey
The purpose of this paper is to firmly identify subspecific authorship of the name floridensis for the Floridian population of Eurytides marcellus (Cramer, 1779), which I recognize as a distinct, though slightly differentiated, subspecies ranging north and west along the Atlantic and Gulf of Mexico coastal regions. Though the name has been in historical use by multiple authors since description by William J. Holland (1898), it has not been readily evident which, if any, published work to date clearly and validly elevated the name to subspecific rank. The name “floridensis” is not preoccupied by any other members of …
Increased Cave Use By Butterflies And Moths: A Response To Climate Warming?, Otto Moog, Erhard Christian, Rudolf Eis
Increased Cave Use By Butterflies And Moths: A Response To Climate Warming?, Otto Moog, Erhard Christian, Rudolf Eis
International Journal of Speleology
Between 2015 and 2019, the list of Lepidoptera from “cave” habitats (i.e., proper caves, rock shelters and artificial subterranean structures) in Austria grew from 17 to 62 species, although the effort of data collection remained nearly constant from the late 1970s onwards. The newly recorded moths and butterflies were resting in caves during daytime in the the warm season, three species were also overwintering there. We observed Catocala elocata at 28 cave inspections, followed by Mormo maura (18), Catocala nupta (7), Peribatodes rhomboidaria, and Euplagia quadripunctaria (6). More than half of the species have been repeatedly observed in caves …
Lepidopteran Granivory Reduces Seed Counts In A Rare Species Of Riparian Scour Prairies, Cheyenne Moore, Angela J. Mcdonnell, Scott Schuette, Christopher T. Martine
Lepidopteran Granivory Reduces Seed Counts In A Rare Species Of Riparian Scour Prairies, Cheyenne Moore, Angela J. Mcdonnell, Scott Schuette, Christopher T. Martine
Faculty Journal Articles
In Pennsylvania Baptisia australis var. australis is found along only four waterways: the Allegheny River, Youghiogheny River, Clarion River, and Red Bank Creek. Because of its limited distribution and small number of extant populations, the species is considered state-threatened in Pennsylvania. In addition, the riparian prairie habitat that Pennsylvania Baptisia australis var. australis is restricted to is also in decline and considered vulnerable. Because of these conservation concerns, insights into the natural history of the taxon in the state is valuable and will inform conservation efforts. Field surveys and fruit collections along the Allegheny River and herbarium collections were used …
The Impacts Of Prescribed Burning And Mechanical Thinning On Insect Communities In The Arkansas Ozarks, Aaron P. Tormanen
The Impacts Of Prescribed Burning And Mechanical Thinning On Insect Communities In The Arkansas Ozarks, Aaron P. Tormanen
Theses and Dissertations from 2020
Insects are important in woodland ecosystems due to their role as pollinators and as prey for bats. My research investigated the relationships between forest management, vegetation, and insects in the Ozark National Forest in Arkansas. I selected 30 stands burned at varying frequencies in the last 12 years. Twelve of these stands were burned and mechanically thinned, 12 were only burned, and 6 were untreated. I deployed blacklight traps and malaise traps in each stand monthly from mid-March to mid- November 2019. Over 42,391 insects were collected, and Lepidoptera was the most abundant order. Insects were dried, weighed, and identified …
Leaf Mining Insects And Their Parasitoids In The Old-Growth Forest Of The Huron Mountains, Ronald J. Priest, Robert R. Kula, Michael W. Gates
Leaf Mining Insects And Their Parasitoids In The Old-Growth Forest Of The Huron Mountains, Ronald J. Priest, Robert R. Kula, Michael W. Gates
The Great Lakes Entomologist
Leaf mining insects in an old-growth forest along the south central shore of Lake Superior in Michigan are documented. We present the results of a 13-year survey of leaf mining species, larval hosts, seasonal occurrence, and parasitoids, as well as report biological observations. Representative larvae, mines, adults, and parasitoids were preserved. Among the larval host associations, 15 are reported as new. Additionally, 42 parasitoid taxa were identified resulting in six first reports from the New World and 32 new host associations. Two undescribed species (Gelechiidae and Figitidae) discovered through this research were described in earlier publications.
The Impact Of Prescribed Fire On Moth Assemblages In The Boston Mountains And Ozark Highlands, In Arkansas, Erin E. Guerra, Cristina M. Blanco, Jorista Garrie
The Impact Of Prescribed Fire On Moth Assemblages In The Boston Mountains And Ozark Highlands, In Arkansas, Erin E. Guerra, Cristina M. Blanco, Jorista Garrie
Journal of the Arkansas Academy of Science
In addition to the impacts of prescribed fires on forest vegetation, this ecosystem process also has dramatic impacts on associated insect assemblages. For herbivorous, terrestrial insects, fire predictably results in a cycle of initial insect population reduction followed by recovery and growth, in which these insect populations exceed pre-fire abundances. We sought to examine if fire-induced disturbance cycles make prescribed burned areas more or less suitable specifically for moths (order Lepidoptera), which is a major food source for, among others, multiple bat species. We surveyed moth assemblages at 20 burned and 20 unburned sites in the Boston Mountain and Ozark …
Influence Of Feeding-Damaged Plants On The Oviposition Responses Within A Community Of Female Moths, Eric Siaw Ntiri, Paul Andre Calatayud, Boaz Musyoka, Johnnie Van Den Berg, Bruno Pierre Le Ru
Influence Of Feeding-Damaged Plants On The Oviposition Responses Within A Community Of Female Moths, Eric Siaw Ntiri, Paul Andre Calatayud, Boaz Musyoka, Johnnie Van Den Berg, Bruno Pierre Le Ru
All Peer-Reviewed Publications
Competitive or facilitative interactions characterise phytophagous insect communities that utilise the same resources. These interactions are often mediated by the host plant. Plant mediation influences the oviposition choices that a community of insects, sharing the same host plant make. In this context, the oviposition choices of females within a community of lepidopteran cereal stemborers namely Busseola fusca, Sesamia calamistis and Chilo partellus were studied in plant choice-experiments under laboratory and field conditions. Gravid females of each species were presented with a choice between maize plants infested by conspecific or heterospecific larvae and uninfested maize plants. The number of eggs and …
Assessment Of Granulovirus, Spinosad, And Mating Disruption For Controlling Cydia Pomonella L. [Lepidoptera: Tortricidae] In Organic Coastal California Apple Orchards, Raven Lukehart
Master's Theses
Codling moth, Cydia pomonella[Lepidoptera: Tortricidae], is a major entomological pest of apples, pears, and walnuts cross the world (Pajac et al. 2016). Female codling moths lay eggs on the apple exocarp and larvae burrow within the fruit causing economic losses to fruit growers.Organic apple orchards in San Luis Obispo, CA currently have three codling moth, Cydia pomonella,control options commercially available including granulovirus (CpVG), spinosad, and mating disruption. In field tests on apple (Malus), we compare percent fruit injury between treatments of granulovirus (2.43 oz/ha Cyd-X® organically approved, Certis USA, Columbia MD), spinosad (4.05 oz/ha Entrust® Naturalyte® …
Odour And Feeding Preference Of Noctuid Moth Larvae Conditioned To Vanillin Diet And Non-Vanillin Diet, Christophe Petit, Peter Ahuya, Bruno Le Ru, Laure Kaiser-Arnauld, Myriam Harry, Paul André Calatayud
Odour And Feeding Preference Of Noctuid Moth Larvae Conditioned To Vanillin Diet And Non-Vanillin Diet, Christophe Petit, Peter Ahuya, Bruno Le Ru, Laure Kaiser-Arnauld, Myriam Harry, Paul André Calatayud
All Peer-Reviewed Publications
It is largely accepted that larval experience influence host-plant preference of larvae. In general, larval experience with a host plant induces both an odour and feeding preference for that plant. In a previous study, exposure of three noctuid stem borer species, i.e. Sesamia nonagrioides, Busseola fusca and B. nairobica, to a vanillin-enriched medium induced an olfactory preference for the odours of this medium in the larvae of these species. Here, we checked if the exposure to a vanillin-enriched medium also induced a feeding preference for this diet. Different life stages (i.e. neonate larvae to adults) of the three species were …
Influence Of Prolonged Dietary Experience During The Larval Stage On Novel Odour Preferences In Adults Of Noctuid Stem Borer Moths (Lepidoptera: Noctuidae), Christophe Petit, Peter Ahuya, Bruno Le Ru, Laure Kaiser-Arnauld, Myriam Harry, Paul André Calatayud
Influence Of Prolonged Dietary Experience During The Larval Stage On Novel Odour Preferences In Adults Of Noctuid Stem Borer Moths (Lepidoptera: Noctuidae), Christophe Petit, Peter Ahuya, Bruno Le Ru, Laure Kaiser-Arnauld, Myriam Harry, Paul André Calatayud
All Peer-Reviewed Publications
In Lepidoptera, larval dietary experience of volatile cues can induce adult preference for these cues. However, such induction may require several generations, depending in part on the degree of specialization of the insects. In a previous study, using species of noctuid stem borers with different diet breadths, namely the polyphagous Sesamia nonagrioides, the oligophagous Busseola fusca and monophagous Busseola nairobica, it was shown that in S. nonagrioides, one generation was enough to induce a preference for vanillin in the resulting gravid females, whereas even two generations failed to induce a response in adults of Busseola spp. In this study, we …
Construction And Performance Of A Novel Capture-Mark-Release Moth Trap, Nicole Wonderlin, L. M. Ross, Peter White
Construction And Performance Of A Novel Capture-Mark-Release Moth Trap, Nicole Wonderlin, L. M. Ross, Peter White
The Great Lakes Entomologist
Mark-recapture studies can provide important information about moth movement as well as habitat preference across a landscape, but to date, such studies tend to be species-specific or require labor-intensive methodologies. To address this challenge, we designed a capture-mark-release-trap (CMRT) featuring a cooling unit attached to a black light trap. The CMRT captures and incapacitates moths throughout the night until the morning, when they can be marked on-site and released. Moths captured with the CMRT during summer of 2016 had a recapture rate of 1.6%, similar to those of previous studies. Importantly, because moths are immobilized by the CMRT, they can …
Effects Of A Prescribed Burn On The Adult Butterfly Assemblage Of A Coastal Grassland, J. Nicole Desha, Joseph Colbert, Kimberly M. Andrews, Scott Coleman, C. Tate Holbrook
Effects Of A Prescribed Burn On The Adult Butterfly Assemblage Of A Coastal Grassland, J. Nicole Desha, Joseph Colbert, Kimberly M. Andrews, Scott Coleman, C. Tate Holbrook
Georgia Journal of Science
Coastal grasslands are globally threatened by development and natural succession. In the southeastern United States, these increasingly rare ecosystems are being managed using prescribed fire, but ecological responses to fire management are largely unknown, particularly among nontargeted species. We tested for short-term effects of controlled burning on the abundance and species richness of adult butterflies, which utilize coastal grasslands for nectaring resources and as migratory stopover sites. In February 2015, four plots of coastal grassland on Little St. Simons Island, GA were burned and paired with unburned (control) plots of equal size. Throughout the following summer-fall flight season, we conducted …
Influence Of Host-Plant Surface Chemicals On The Oviposition Of The Cereal Stemborer Busseola Fusca, Gerald Juma, Gilles Clément, Peter Ahuya, Ahmed Hassanali, Sylvie Derridj, Cyrile Gaertner, Romain Linard, Bruno Le Ru, Brigitte Frérot, Paul André Calatayud
Influence Of Host-Plant Surface Chemicals On The Oviposition Of The Cereal Stemborer Busseola Fusca, Gerald Juma, Gilles Clément, Peter Ahuya, Ahmed Hassanali, Sylvie Derridj, Cyrile Gaertner, Romain Linard, Bruno Le Ru, Brigitte Frérot, Paul André Calatayud
All Peer-Reviewed Publications
The chemical composition of plant surfaces plays a role in selection of host plants by herbivorous insects. Once the insect reaches the plant, these cues determine host acceptance. Laboratory studies have shown that the stem borer Busseola fusca (Lepidoptera: Noctuidae), an important pest of sorghum and maize in sub-Saharan Africa, is able to differentiate between host and non-host plant species. However, no information is available on the cues used by this insect to seek and accept the host plant. Thus, the role of surface phytochemical stimuli on host selection and oviposition by B. fusca was studied in the laboratory using …
Effect Of Cry1f Maize On The Behavior Of Susceptible And Resistant Spodoptera Frugiperda And Ostrinia Nubilalis, Ana María Vélez, Analiza P. Alves, Erin E. Blankenship, Blair Siegfried
Effect Of Cry1f Maize On The Behavior Of Susceptible And Resistant Spodoptera Frugiperda And Ostrinia Nubilalis, Ana María Vélez, Analiza P. Alves, Erin E. Blankenship, Blair Siegfried
Department of Entomology: Faculty Publications
Understanding the behavior of pests targeted with Bacillus thuringiensis Berliner (Bt) crops is important to define resistance management strategies. Particularly the study of larval movement between plants is important to determine the feasibility of refuge configurations. Exposure to Bt maize, Zea mays L. (Poaceae), has been suggested to increase larval movement in lepidopteran species but few studies have examined the potential for resistance to interact with behavioral responses to Bt toxins. Choice and no-choice experiments were conducted with Spodoptera frugiperda (JE Smith) (Lepidoptera: Noctuidae) and Ostrinia nubilalis (Hübner) (Lepidoptera: Crambidae) to determine whether Cry1F resistance influences neonate movement. Leaf discs …
Reduced Stability And Intracellular Transport Of Dsrna Contribute To Poor Rnai Response In Lepidopteran Insects, Jayendra Nath Shukla, Megha Kalsi, Amit Sethi, Kenneth E. Narva, Elane Fishilevich, Satnam Singh, Kanakachari Mogilicherla, Subba Reddy Palli
Reduced Stability And Intracellular Transport Of Dsrna Contribute To Poor Rnai Response In Lepidopteran Insects, Jayendra Nath Shukla, Megha Kalsi, Amit Sethi, Kenneth E. Narva, Elane Fishilevich, Satnam Singh, Kanakachari Mogilicherla, Subba Reddy Palli
Department of Entomology: Faculty Publications
RNA interference (RNAi) has become a widely used reverse genetic tool to study gene function in eukaryotic organisms and is being developed as a technology for insect pest management. The efficiency of RNAi varies among organisms. Insects from different orders also display differential efficiency of RNAi, ranging from highly efficient (coleopterans) to very low efficient (lepidopterans). We investigated the reasons for varying RNAi efficiency between lepidopteran and coleopteran cell lines and also between the Colorado potato beetle, Leptinotarsa decemlineata and tobacco budworm, Heliothis virescens. The dsRNA either injected or fed was degraded faster in H. virescens than in L. …
Cold Hardiness And Deacclimation Of Overwintering Papilio Zelicaon Pupae, Caroline M. Williams, Nicolai Annegret, Brent J. Sinclair, Laura V. Ferguson, Mark A. Bernards, Jessica J. Hellmann
Cold Hardiness And Deacclimation Of Overwintering Papilio Zelicaon Pupae, Caroline M. Williams, Nicolai Annegret, Brent J. Sinclair, Laura V. Ferguson, Mark A. Bernards, Jessica J. Hellmann
Biology Publications
Seasonally-acquired cold tolerance can be reversed at warm temperatures, leaving temperate ectotherms vulnerable to cold snaps. However, deacclimation, and its underlying mechanisms, has not been well-explored in insects. Swallowtail butterflies are widely distributed but in some cases their range is limited by low temperature and their cold tolerance is seasonally acquired, implying that they experience mortality resulting from deacclimation. We investigated cold tolerance and hemolymph composition of Anise swallowtail (Papilio zelicaon) pupae during overwintering in the laboratory, and after four days exposure to warm temperatures in spring. Overwintering pupae had supercooling points around − 20.5 °C and survived …
Repair Of The Proboscis Of Brush-Footed Butterflies (Lepidoptera: Nymphalidae), Suellen Pometto
Repair Of The Proboscis Of Brush-Footed Butterflies (Lepidoptera: Nymphalidae), Suellen Pometto
All Theses
A key feature of the order Lepidoptera is the coilable proboscis, present in over 99% of lepidopteran species. The proboscis is used to obtain liquid nutrition, usually floral nectar. The proboscis is assembled from two elongate galeae immediately after emergence of the adult from the pupa. What happens if the galeae become separated? I studied the process of repair of the proboscis, behaviorally and functionally, at the organismal level. My research questions were as follows: 1) is the proboscis capable of repair, 2) is saliva necessary to proboscis repair, and 3) is the repaired proboscis able to acquire fluids? Test …
Similar Differentiation Patterns Between Pbp Expression Levels And Pheromone Component Ratios In Two Populations Of Sesamia Nonagrioides, Nicolas Glaser, Brigitte Frérot, Ene Leppik, Christelle Monsempes, Claire Capdevielle-Dulac, Bruno Le Ru, Thomas Lecocq, Myriam Harry, Emmanuelle Jacquin-Joly, Paul Andre Calatayud
Similar Differentiation Patterns Between Pbp Expression Levels And Pheromone Component Ratios In Two Populations Of Sesamia Nonagrioides, Nicolas Glaser, Brigitte Frérot, Ene Leppik, Christelle Monsempes, Claire Capdevielle-Dulac, Bruno Le Ru, Thomas Lecocq, Myriam Harry, Emmanuelle Jacquin-Joly, Paul Andre Calatayud
All Peer-Reviewed Publications
Pheromone-binding proteins (PBPs) are thought to contribute to the specificity of the pheromone detection system through an initial selective binding with pheromone molecules. Here, we report different expression levels of PBP transcripts in the antennae of two populations of the stemborer Sesamia nonagrioides (Lepidoptera: Noctuidae), one collected in Europe and one in sub-Saharan Africa. The three PBP transcripts previously identified in this species were found to be expressed in both male and female antennae. Whereas PBP3 did not show any differential expression, PBP1 and PBP2 appeared to be expressed differently according to the population origin and sex. Simultaneously, we measured …
Larval Host Plants Of Enodia Anthedon, Satyrodes Appalachia And S. Eurydice In Vermont, Usa, David J. Hoag
Larval Host Plants Of Enodia Anthedon, Satyrodes Appalachia And S. Eurydice In Vermont, Usa, David J. Hoag
The Taxonomic Report of the International Lepidoptera Survey
Field observation and captive rearing was used to clarify larval host plant use in Enodia anthedon, Satyrodes appalachia, and S. eurydice in Vermont, USA. In nature S. appalachia larvae were found on Carex lacustris, C. lupulina, C. gracillima, and C. tuckermanii. Enodia anthedon in nature was found to oviposit on grass and on Carex lacustris. Larvae of E. anthedon were found on C. lacustris and C. lupulina. In captivity, all but two E. anthedon larvae chose Carex over grass. Both E. appalachia and E. anthedon …
Diversity Of Stem Borer Parasitoids And Their Associated Wild Host Plants In South Africa And Mozambique, H. J. Moolman, J. Van Den Berg, D. Conlong, D. Cugala, S. J. Siebert, B. P. Le Ru
Diversity Of Stem Borer Parasitoids And Their Associated Wild Host Plants In South Africa And Mozambique, H. J. Moolman, J. Van Den Berg, D. Conlong, D. Cugala, S. J. Siebert, B. P. Le Ru
All Peer-Reviewed Publications
The diversity of lepidopterous stem borers, their parasitoids and their associated wild host plants was studied in South Africa between 2006 and 2009 and in Mozambique between 2005 and 2010. In South Africa, 20 species of parasitoids were recovered from 17 stem borer species collected on 16 wild host plant species. From Mozambique, 14 parasitoid species were recorded from 16 stem borer species collected on 14 wild host plant species. The highest diversity of parasitoids was recorded on stem borers that attacked the host plants Phragmites australis (7 spp.) and Panicum maximum (6 spp.), in South Africa and Mozambique, respectively. …