A5023506935- Insect-Plant Interactions and Control
- Plant and animal studies
- Insect symbiosis and bacterial influences
- Insect and Arachnid Ecology and Behavior
- Fossil Insects in Amber
- Plant Parasitism and Resistance
- Hymenoptera taxonomy and phylogeny
- Phytoplasmas and Hemiptera pathogens
- Insect and Pesticide Research
- Entomopathogenic Microorganisms in Pest Control
- Forest Insect Ecology and Management
- Research on scale insects
- Insect behavior and control techniques
- Plant Pathogens and Fungal Diseases
- Species Distribution and Climate Change
- Lepidoptera: Biology and Taxonomy
- Diptera species taxonomy and behavior
- Insect Resistance and Genetics
- Plant biochemistry and biosynthesis
- Freshwater macroinvertebrate diversity and ecology
- Insect Pest Control Strategies
- Plant Pathogenic Bacteria Studies
- Cocoa and Sweet Potato Agronomy
- Biological Control of Invasive Species
- Mosquito-borne diseases and control
Utah State University
2015-2025
Shanxi University of Traditional Chinese Medicine
2023
Bridge University
2023
ORCID
2019
Idaho State University
1997
University of Arizona
1993-1996
University of Maryland, College Park
1989
Abstract A 658‐bp fragment of mitochondrial DNA from the 5′ region cytochrome c oxidase 1 (COI) gene has been adopted as standard barcode for animal life. In this study, we test its effectiveness in discrimination over 300 species aphids more than 130 genera. Most (96%) were well differentiated, and sequence variation within was low, averaging just 0.2%. Despite complex life cycles parthenogenetic reproduction aphids, barcodes are an effective tool identification.
The evolutionary origins of the protistan phylum, Myxozoa, have long been questioned. Although these obligate parasites are like protozoans in many features, several aspects their ontogeny and morphology implied a closer relationship to metazoan lineages. Phylogenetic analyses 18 S ribosomal RNA sequences from myxozoans other eukaryotes, with use parsimony, distance, maximum-likelihood methods, support hypothesis that closely related bilateral animals. These results suggest considered an...
Ageniella Banks is the second most diverse genus in tribe Ageniellini (Pompilidae: Pepsinae) with about 200 valid names. known to be paraphyletic; yet, no revision has been made. Lack of a taxonomic catalogue and identification keys further delayed studies. Additionally, many currently names should treated as synonyms. This present study first attempt organize species Ageniella, focusing on occurring Brazil. A total six subgenera 40 occur Of these, 25 are endemic The new synonyms proposed...
Three new species of Neuquenaphis Blanchard are described from aphids collected in southernmost South America on several Nothofagus, southern beeches: blackmani Nieto Nafría and Brown, sp. n. apterous alate viviparous females alatoid nymphs Nothofagus dombeyi Los Lagos Ríos regions (Chile) nitida region, aurata Mier Durante von Dohlen, betuloides Magallanes region Tierra del Fuego province (Argentina), ramireziNieto Ortego, pumilio N. antarctica (Argentina) La Araucanía, Aysén (Chile)....
Uroleucon Mordvilko is the largest genus in Macrosiphini (Hemiptera, Aphididae) and most of its species live on Asteraceae. nahuelhuapense Nieto Nafría von Dohlen sp. n. described from apterous viviparous females collected Adesmia boronioides (Fabaceae) a locality Neuquén province (Argentina). The morphological characters sequence tRNAleu-COII mitochondrial locus support inclusion new Uroleucon. Apterous adesmiae Mier Durante Ortego two Argentinean localities have also been studied ranges...
Uroleucon (Hemiptera, Aphididae, Macrosiphini) is a highly diverse and widely distributed genus. Most of its species are hosted by plants the Asteraceae or Campanulaceae, but three from southern end South America have specialized to live on genus Adesmia (Fabaceae). New morphological chorological data provided for U. adesmiae Mier Durante Ortego naheulhuapense Nieto Nafría von Dohlen, with description alate viviparous female latter species. australe Durante, sp. n. described apterous...
Many aphids display a remarkably complex life cycle of host alternation, in which cyclical parthenogenesis is combined with the obligate use two unrelated plants. We used mitochondrial ribosomal DNA (partial 12S and 16S) sequences to reconstruct phylogeny aphids, determine how many origins alternation correlated major host-plant shifts have occurred. Our results agreed previous morphological studies that species clustered good support at level tribes. There was little well-supported...
The 24 000+ described species of Vespoidea include many well‐known stinging wasps, such as paper wasps and hornets (Vespidae), velvet ants (Mutillidae), spider (Pompilidae) (Formicidae). compelling behaviours vespoids have been instrumental in developing theories stepwise evolutionary transitions, which necessarily depend on an understanding phylogeny, yet, existing morphological phylogenies for conflict. We collected molecular data from four nuclear genes (elongation factor‐1α F2 copy,...
Abstract Sympetrinae is the largest subfamily of diverse dragonfly family Libellulidae. This subfamily, like most libellulid subfamilies, defined currently by a few wing venation characters, none which are synapomorphies for taxon. In this study, we used DNA sequence data from nuclear locus elongation factor‐1α and mitochondrial loci 16S 12S rRNA, together with 38 to test monophyly several other subfamilies. No analysis recovered as monophyletic, partly because position Leucorrhinia (of...
Many aphids display a remarkably complex life cycle of host alternation, in which cyclical parthenogenesis is combined with the obligate use two unrelated plants. We used mitochondrial ribosomal DNA (partial 12S and 16S) sequences to reconstruct phylogeny aphids, determine how many origins alternation correlated major host-plant shifts have occurred. Our results agreed previous morphological studies that species clustered good support at level tribes. There was little well-supported...
Abstract Eubacterial 16S rDNAs were sequenced from endosymbionts of seven psyllids (Psylloidea) and one whitefly (Aleyrodoidea), to investigate the evolution their hosts. Primary all formed a highly supported clade, tentatively placed as sister primary endosymbionts, showing several points congruence with host morphological phylogeny. Almost taxa yielded an additional eubacterial sequence, related either known psyllid secondary or other insect parasites. The relationships some also suggested...
Most sternorrhynchan insects harbor endosymbiotic bacteria in specialized cells (bacteriocytes) near the gut which provide essential nutrients for hosts. In lineages investigated so far with molecular methods (aphids, mealybugs, whiteflies), endosymbionts apparently have arisen from independent infections of common host ancestors and co-speciated their Some also exhibit putatively negative genetic effects symbiotic association. this study, identity one major lineage, psyllids (Psylloidea),...
Knowledge of intraspecific variation in symbioses may aid understanding the ecology widespread insects different parts their range. We investigated bacterial symbionts Adelges tsugae, a pest hemlocks eastern North America introduced from Asia. Amplification, cloning, and sequencing 16S rDNA, situ hybridizations, electron microscopy revealed that A. tsugae harbours up to five phylotypes, according population. Three Gammaproteobacteria species are maternally transmitted. The first, designated...
Spider wasps (Hymenoptera: Pompilidae) constitute a monophyletic family supported by numerous morphological and behavioural traits. The subfamilial tribal classifications, however, have history of conflicting confusing designations nomenclature. Here, we reconstruct molecular phylogeny Pompilidae from Bayesian maximum-likelihood analyses four nuclear markers (elongation factor-1 α F2 copy, long-wavelength rhodopsin, RNA polymerase II, 28S ribosomal RNA). A divergence-time estimation analysis...