Silviculturists use a variety of techniques, including repellents, to reduce browse damage by white-tailed deer (Odocoileus virginianus) to valuable eastern hardwood seedlings. Systemic selenium, sodium selenite, was evaluated with captive whitetailed deer for its repellency in white ash (Fraxinus americana) and black cherry (Prunus serotina) seedlings. Selenium had no effect in reducing browsi...

Zuleha Ahmad, Medical Technologist, Department of Microbiology, Medical Faculty, National University of Malaysia, P. O. Box 2418, Kuala Lumpur, Malaysia. SUMMARY Bacterial isolates were made from the intestinal tracts ofcarious species of cockroaches (Periplaneta americana, Periplaneta brunnea, Periplaneta australasiae, Neostylopyga rhombifolia, Nauphoeta cinerea) trapped from hitchens and stor...

b a ckground: the present study was designed to investigate the insecticidal efficacy of four different classes of in-secticides: pyrethroids, organophosphates, phenyl-pyrazoles and neo-nicotenoids. one representative chemical from each class was selected to compare the toxicity: deltamethrin from pyrethroids, dichlorovinyl dimethyl phosphate (ddvp) from organophosphates, fipronil from phenyl-p...

Heterosporous ferns (Salviniales) are a group of approximately 70 species that produce two types of spores (megaspores and microspores). Earlier broad-scale phylogenetic studies on the order typically focused on one or, at most, two species per genus. In contrast, our study samples numerous species for each genus, wherever possible, accounting for almost half of the species diversity of the ord...

Title of Document: ENHANCING VALLISNERIA AMERICANA RESTORATION USING KNOWLEDGE OF GENOTYPIC AND PHENOTYPIC DIVERSITY Brittany West Marsden, Ph.D., 2015 Directed By: Associate Professor, Maile C. Neel, Department of Plant Science and Landscape Architecture & Department of Entomology Vallisneria americana Michx. (Hydrocharitaceae) is an ecologically important submersed aquatic plant that once dom...

DNA preparations obtained from several tissues of Rhynchosciara americana and two related species, R. milleri and R. papaveroi, were hybridized to R. americana rRNA. The percentage of hybridization was found to be higher in tissues with low polyteny than in tissues with high polyteny, suggesting a relationship between the amount of rDNA and the tissue polyteny. This could be explained by under-...

UNLABELLED PREMISE OF THE STUDY Microsatellite primers were developed for the tree species Genipa americana (Rubiaceae) for further population genetic studies. • METHODS AND RESULTS We identified 144 clones containing 65 repeat motifs from a genomic library enriched for (CT)8 and (GT)8 motifs. Primer pairs were developed for 32 microsatellite loci and validated in 40 individuals of two nat...

Hedonic valence of odors in the locust, Schistocerca americana

Sorption interactions of plant cuticular matter with organic compounds are not yet fully understood. The objective of this study was to examine the competitive sorption-desorption interactions of the triazine herbicides (atrazine and ametryn) with cuticular fractions isolated from tomato fruits and leaves of Agave americana. The 13C NMR data suggest a rubber-like nature for the cutin. This biop...