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Creator:: Osgood, Charles Edgar
Abstract:: The study provides the details of the ethology of Megachile rotundata (Fabricius), and presents preliminary observations on its foraging and nesting behavior. Development from prepupae to adults proceeds most rapidly at 32 degrees C., and is retarded when held at lower and higher temperatures. Male behavior is distinct from that...
Resource Type:: Masters Thesis
Full Text:: rendered during the course of this study: To my major professor, Dr. W. P. Stephen, Associate Profes

Creator:: Eppley, Richard Keith
Abstract:: Heterostylum robustum (Osten Sacken) is the principal parasite of the alkali bee, Nomia melanderi Ckll., one of the most efficient pollinators of alfalfa in the western United States. The purpose of the study was to determine the incidence of parasitism and to investigate the biology of H. robustum. The fly...
Resource Type:: Masters Thesis
Full Text:: preparation of this thesis: To my major professor, Dr. W. P. Stephen, for guidance, ad- vice, and

Creator:: Kamienski, Francis Xavier
Abstract:: Phospholipids of Tenebrio molitor larvae were separated on columns of DEAE-cellulose and silicic acid-Hyflo Super Cel. The major phosphatide components were identified by various analytical procedures. Phosphatidyl choline was demonstrated to be the predominant phospholipid with a high percentage of phosphatidyl ethanolamine. A small amount of inositol-containing phosphatides were present....
Resource Type:: Masters Thesis
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Creator:: Beckendorf, Gerald Walter
Abstract:: An attempt was made to demonstrate isozymic forms of esterase, MDH, LDH and GPDH and the variation in enzyme pattern with increasing age in the thoracic muscle, appendage muscle and hemolymph of the American cockroach, Periplaneta americana. Sampled specimens of both sexes were aged one through seven days, two weeks...
Resource Type:: Masters Thesis
Full Text:: indebted to Dr. W. P. Stephen, Professor of Entomology, for his patience and guidance throughout the

Creator:: Young, Conny Lee
Abstract:: The objectives of this study were: a) to obtain and evaluate equipment for bio-acoustical analysis for this work and for future work in the analysis of insect sounds, b) to study the acoustical and sexual behavior of Acheta domesticus L., and c) to determine methods for analyzing the changes effected...
Resource Type:: Masters Thesis
Full Text:: their assistance during the preparation of this thesis: To Dr. W. P. Stephen, my major professor, for

Creator:: Hartman, Margaret Jane
Abstract:: Organogenesis was observed in different age embryos and first instar larvae of Nomia melanderi Cockerell (Halictidae), Megachile rotundata (Fabricius) (Megachilidae), and Bombus griseocollis (DeGeer) (Apidae) (Hymenoptera : Apoidea). It was found that, with the exception of the ventral nerve cord, comparable organ development had occurred by the beginning of the...
Resource Type:: Masters Thesis
Full Text:: professor, Dr. W. P. Stephen, Professor of Entomology, Oregon State University, for his guidance

Creator:: Tweedy, David Graham
Abstract:: The purpose of the study was to determine an emergence rhythm, its period, and the developmental stages susceptible to emergence synchronization in the leafcutter bee Megachile rotundata (Fabricius). An attempt was made to determine if an oxygen consumption rhythm was present in the pupal and adult stages of the alkali...
Resource Type:: Masters Thesis
Full Text:: professor, Dr. W. P. Stephen, Professor of Entomology, Oregon State University, for guidance, advice, and

Creator:: Hackwell, Glenn Alfred
Abstract:: Nomia melanderi Cockerell is one of the most efficient pollinators of alfalfa in Eastern Oregon. Emergence begins in June, usually reaches its peak in early July, and may continue into early August. Male emergence precedes female emergence by four or five days. For the first few weeks of this time,...
Resource Type:: Dissertation
Full Text:: (HYMNOPTERA:APCIDEA) Redacted for privacy Abstract approved: W. Stephen Nomia melanderi Cockerell is one of the

Creator:: Tweedy, David Graham
Abstract:: The rhythms of emergence, oxygen consumption, and activity were studied in Megachile rotundata with the object of comparing the results to the major properties of the biological clock such as temperature independence, susceptibility to light synchronization, and entrainment. A further objective was to compare the three rhythms to determine if...
Resource Type:: Dissertation
Full Text:: Privacy W. P. Stephen The rhythms of emergence, oxygen consumption, and activity were studied in

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