Network


Latest external collaboration on country level. Dive into details by clicking on the dots.

Hotspot


Dive into the research topics where Marion Page is active.

Publication


Featured researches published by Marion Page.


Journal of Chemical Ecology | 1997

Cuticular Hydrocarbons as Chemotaxonomic Characters of Pine Engraver Beetles (Ips spp.) in the grandicollis Subgeneric Group

Marion Page; Lori J. Nelson; Gary J. Blomquist; Steven J. Seybold

Cuticular hydrocarbons were extracted, identified, and evaluated as chemotaxonomic characters from all species of adult Ips pine engraver beetles in the grandicollis subgeneric group. The grandicollis group consists of Ips grandicollis (Eichhoff), I. cribricollis (Eichhoff), I. lecontei Swaine, I. montanus (Eichhoff), I. paraconfusus Lanier, I. confusus (LeConte), and I. hoppingi Lanier. In order to provide outgroups for a phylogenetic analysis, cuticular hydrocarbons were also analyzed from Orthotomicus caelatus (Eichhoff), I. latidens (LeConte) (latidens subgeneric group), and I. pini (Say) (pini subgeneric group). Two hundred forty-eight hydrocarbon components were identified by gas chromatography–mass spectrometry. The members of the grandicollis group provided 206 of these compounds. The components represented eight classes: n-alkanes, alkenes, alkadienes, terminally branched methylalkanes, internally branched methylalkanes, dimethylalkanes, trimethylalkanes, and tetramethylalkanes. Different populations of O. caelatus, I. grandicollis, I. lecontei, I. montanus, I. paraconfusus, I. confusus, and I. hoppingi provided no evidence for interpopulational variation in cuticular hydrocarbons. Single populations only were analyzed for I. latidens, I. pini, and I. cribricollis. Sexual dimorphism in cuticular hydrocarbons occurred only in I. lecontei where females produced eight unique components with a pentatriacontane parent chain. Several phylogenetic analyses based on hydrocarbon phenotypes agreed in general with the established morphologically based system of relatedness and with published phylogenies reconstructed from protein and nucleic acid characters. Nearly all hydrocarbon analyses suggested a close relationship between I. grandicollis and I. cribricollis; between I. lecontei and I. montanus; and among the sibling species I. paraconfusus, I. confusus, and I. hoppingi. The presence or absence of specific n-alkanes (n-docosane, n-triacontane); certain dimethylalkanes (terminally branched with octacosane and triacontane parent chains and internally branched with heptacosane, hentriacontane, and docotriacontane parent chains); and 3,7,11-; 3,7,15-trimethylheptacosane permit facile discrimination of I. paraconfusus, I. confusus, and I. hoppingi. These three sibling species are difficult to resolve by external morphology. These data support the species status of I. hoppingi rather than it being considered a host race of the I. confusus complex. They also support the species status of I. cribricollis rather than it being considered part of I. grandicollis. In contrast to other published phylogenies reconstructed from molecular data, phylogenies reconstructed from cuticular hydrocarbons repeatedly place I. lecontei as an integral part of the grandicollis subgeneric group. Thus, cuticular hydrocarbon and pheromone alcohol composition of I. lecontei support its inclusion in the grandicollis subgeneric group.


Journal of Chemical Ecology | 2000

Correlation of mitochondrial haplotypes with cuticular hydrocarbon phenotypes of sympatric Reticulitermes species from the southeastern United States.

Tracie M. Jenkins; Michael I. Haverty; Christopher J. Basten; Lori J. Nelson; Marion Page; Brian T. Forschler

Three sympatric Reticulitermes species have been identified in Georgia, USA, based on morphological characters from alates and soldiers: R. flavipes, R. virginicus, and R. hageni, but species identification at individual collection sites is often difficult because alate production is seasonal and soldiers comprise 1–3% of the colony. We therefore set up an experiment to determine if chemical phenotypes and mtDNA haplotypes can be used together to separate species of subterranean termites. Subterranean termites of the order Reticulitermes (Isoptera: Rhinotermitidae) were collected from 20 inspection ports across four soil provinces in Georgia. Each collection was identified to species using dichotomous keys. Two collections, HH11 and BH25, however, could not be unequivocally keyed to species and were classified as unknown. The mitochondrial cytochrome oxidase II (COII) gene was sequenced from individual members of each collection and the variation in cuticular hydrocarbon phenotypes from these same collections was characterized. The cuticular hydrocarbon and mtDNA phylogenetic analyses show agreement with both unknown collections falling out in a separate clade. Specimens from HH11 nad BH25 are different morphologically, chemically, and genetically from the three known sympatric species in Georgia. Our results suggest that these two collections may represent at least one new taxon in Reticulitermes. Furthermore, the association of cuticular hydrocarbon phenotypes and mtDNA haplotypes demonstrates that, when combined with morphological characters, they are useful in separating known species, determining new species, and understanding termite evolution.


Journal of Entomological Science | 1989

INSECTICIDE RESIDUES ON PINE BARK: INFLUENCE OF TREES, SAMPLE VOLUME AND SIZE ON VARIABILITY

Marion Page; Michael I. Haverty; Charles E. Richmond

Residues of carbaryl (Sevimol®) in ponderosa pine bark were quantified by gas chromatography and the major sources of experimental error were determined. Quantification of carbaryl residues was sig...


Annals of The Entomological Society of America | 1993

Distribution and Biogeography of the North American Termite Genus Zootermopsis (Isoptera: Termopsidae)

Barbara L. Thorne; Michael I. Haverty; Marion Page; William L. Nutting


Annals of The Entomological Society of America | 1990

Cuticular hydrocarbons as chemotaxonomic characters for bark beetles: Dendroctonus ponderosae, D. jeffreyi, D. brevicomis, and D. frontalis (Coleoptera: Scolytidae).

Marion Page; Lori J. Nelson; Michael I. Haverty; Gary J. Blomquist


Journal of Economic Entomology | 1976

Contact Toxicity of Insecticides Applied to Cottonwood Leaf Beetle

Marion Page; Robert L. Lyon


Journal of Economic Entomology | 1973

Insecticides Applied to Western Tussock Moth Reared on Artificial Diet: Laboratory Tests

Marion Page; Robert L. Lyon


Journal of Economic Entomology | 1971

Laser Holography: Its Application to the Study of the Behavior of Insecticide Particles

R. B. Roberts; Robert L. Lyon; Marion Page; R. P. Miskus


Archive | 1991

Cuticular Hydrocarbons: Species and Population-Level Discrimination in Termites

Michael I. Haverty; Marion Page; Barbara L. Thorne; Pierre Escoubas


Journal of Economic Entomology | 1979

Control of a Jeffrey Pine Needleminer by Spraying and Trunk Implantation and Resultant Acephate Residues1

Leland R. Brown; Clark O. Eads; Carl E. Crisp; Marion Page

Collaboration


Dive into the Marion Page's collaboration.

Top Co-Authors

Avatar

Robert L. Lyon

United States Forest Service

View shared research outputs
Top Co-Authors

Avatar

Michael I. Haverty

United States Forest Service

View shared research outputs
Top Co-Authors

Avatar
Top Co-Authors

Avatar

Lori J. Nelson

United States Forest Service

View shared research outputs
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar

Andrew J. Storer

Michigan Technological University

View shared research outputs
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar

Christopher J. Basten

North Carolina State University

View shared research outputs
Researchain Logo
Decentralizing Knowledge