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The structure of the central nervous system of jumping spiders of the genus Phidippus (Araneae:Salticidae)

Creator:: Hill, David Edwin
Abstract:: The central nervous system of Phidippus, while comparable to that of other spiders in most respects, is distinguished by the extraordinary development of visual processing centers, associated with the complex visually-directed behavior of these animals. The primary neuropile of the anterior medial eyes consists of two distinct columnar synapsing regions....
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF David Edwin Hill for the degree

Study of the human Y chromosome in the interphase nucleus by light microscopy, quinacrine fluoromicroscopy and autoradiography

Creator:: Wyandt, Herman Edwin, 1939-
Abstract:: Part of the Y chromosome in humans is detectable as a brightly fluorescing body in interphase nuclei stained with quinacrine dyes. This fluorescent body when stained with quinacrine mustard dihydrochloride, in cells from some 15 human subjects, was seen to manifest a variable morphology which appeared to be related to...
Resource Type:: Dissertation
Full Text:: OF Herman Edwin Wyandt, Jr. for the Doctor of Philosophy in Zoology presented on 4 Title: Study of

The comparative histology of light organs in four Pacific myctophids of the genus, Lampanyctus

Creator:: Wyandt, Herman Edwin, 1939-
Abstract:: A comparative study was made of the morphology and histology of three major groups of light organs in the genus Lampanyctus of the family Myctophidae for the species, L. leucopsarus, L. ritteri, L. nannochir, and L. regalis. The species can be divided according to their ranges in depth, the first...
Resource Type:: Masters Thesis
Full Text:: Myctophids of the Genus Lampanyctus AN ABSTRACT OF THE THESIS OF Herman Edwin Wyandt Jr. (Name) for

An experimental test of optimal outbreeding in the harpacticoid copepod Tigriopus californicus (Baker)

Creator:: Brown, Alice F.
Abstract:: Hypotheses concerning relative costs of inbreeding and outbreeding were evaluated for the harpacticoid copepod Tigriopus californicus, which inhabits high intertidal tidepools. Field studies indicate high variation in biotic and abiotic parameters among pools. These findings coupled with previous information about very low dispersal rates and local adaptations to individual pools...
Resource Type:: Masters Thesis
Full Text:: McCleery 1984, Pyke 1984, Pyke, et.al. 1977, Waddington 1983), group size (Pulliam and Caraco 1984), sex

Architecture, size, and reproduction in plants : a pollination study of Mertensia ciliata (James) G. Don

Creator:: Geber, Monica
Abstract:: I experimentally test the hypothesis that the potential for selfing increases with plant size in Mertensia ciliata (Boraginaceae), a self-compatible, profusely-flowering perennial. This follows from the premises that 1) pollen dispersal by pollinators between flowers is limited, and 2) individual pollinators, in this study bumblebees, will visit more flowers per...
Resource Type:: Masters Thesis
Full Text:: pairs of means using Scheffe's method of multiple comparisons (combined d=0.05). When the same letter

The effect of temperature on crossvein formation in crossveinless-like strains of Drosophila melanogaster (Meigen)

Creator:: Thompson, Steven Risley
Abstract:: Development of the posterior crossvein in crossveinless-like strains of Drosophila melanogaster can be influenced by high temperature shocks at specific times in pupal development. Three sensitive periods were detected in age response studies on Ona X, Ona II, 5-hi III; crossvein restoration at 14 hours in pupal development, a crossvein...
Resource Type:: Dissertation
Full Text:: Thompson for the Ph. D. in Zoology (Name) (Degree) (Major) Date thesis is presented August 9, 1966

Time-lapse and electron microscope study of cultured epithelium subjected to calcium depletion with EDTA and its subsequent recovery

Creator:: Whitehead, Russell Albert
Abstract:: Primary monolayer cultures of chick renal epithelial cells grown on plastic coverslips were reversibly dissociated with the chelating agent ethylenediaminetetraacetic acid (EDTA). The cellular responses during dissociation and reaggregation in Hank's balanced salt solution (BSS) were observed with phase optics and recorded by time-lapse cinemicrography. The epithelial cells grow as...
Resource Type:: Dissertation
Full Text:: OF RUSSELL ALBERT WHITEHEAD for the Ph. D. in Zoology (Name) (Degree) (Major) Date thesis is

An analysis of differentiation and regulation in the mesencephalon of the chick embryo

Creator:: Birge, Wesley J.
Resource Type:: Dissertation
Full Text:: forebrain in 5 to 25 somite chicks, Waddington and Cohen (64) concluded that the remaining half could

The incidence and development of somatic polyploidy in the marine isopod Idothea wosnesenskii

Creator:: Matlock, Daniel Budd
Abstract:: (Brandt) were surveyed for the presence of polyploid cells. Large polyploid cells were found in the hepatic cecum, gut and sheath of the testis. The relative DNA content of the polyploid nuclei was measured by means of two wavelength cytophotometry. Histograms plotted from the data provide information on the level...
Resource Type:: Dissertation
Full Text:: minutes in Kodak D-19 developer at 20°C, rinsed for one minute in distilled water, and fixed in hypo for

Local adaptations in chipmunk (Eutamias amoenus) populations and evolutionary potential at species' borders

Creator:: States, James B.
Resource Type:: Dissertation
Full Text:: considerable gene substitution or environmental fluctuation (Waddington 1942). Carson (op. cit.) equates

ScholarsArchive@OSU

The structure of the central nervous system of jumping spiders of the genus Phidippus (Araneae:Salticidae)

Study of the human Y chromosome in the interphase nucleus by light microscopy, quinacrine fluoromicroscopy and autoradiography

The comparative histology of light organs in four Pacific myctophids of the genus, Lampanyctus

An experimental test of optimal outbreeding in the harpacticoid copepod Tigriopus californicus (Baker)

Architecture, size, and reproduction in plants : a pollination study of Mertensia ciliata (James) G. Don

The effect of temperature on crossvein formation in crossveinless-like strains of Drosophila melanogaster (Meigen)

Time-lapse and electron microscope study of cultured epithelium subjected to calcium depletion with EDTA and its subsequent recovery

An analysis of differentiation and regulation in the mesencephalon of the chick embryo

The incidence and development of somatic polyploidy in the marine isopod Idothea wosnesenskii

Local adaptations in chipmunk (Eutamias amoenus) populations and evolutionary potential at species' borders

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