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A histological study of the digestive system of Ascaphus truei (Stejneger)

Creator:

Belton, John Clair

Resource Type:

Masters Thesis

Full Text:

JOHN CLAIH BELTOIT A THESIS submitted to OiIEGON STATE UNI VEaSITY in partial fulfilirient of
The deposition and storage of hepatic lipids in the frog Ascaphus truei (Stejneger) : an electron microscopic histochemical and chromatographic study

Creator:

Belton, John Clair

Abstract:

Electron microscopic, histochemical and thin-layer chromatographic techniques have been used to study some cytological changes associated with seasonal lipid deposition in the liver of Ascaphus. Histochemical and chromatographic information has shown that unsaturated triglycerides occur in great quantities in the liver of pre-ovulatory females and may serve as a solvent...

Resource Type:

Dissertation

Full Text:

OF THE THESIS OF John Clair Belton for the Ph. D. in Zoology (Name) (Degree) (Major) Date thesis
Effects of seed characters and competitive environment on two-year performance of open-pollinated Douglas-fir families

Creator:

St. Clair, John Bradley

Abstract:

Ungerminated seed and recent germinants from 39 open-pollinated Douglas-fir (Pseudotsuga menziesii var. menziesii (Mirb.) Franco) families were planted in each of three competitive environments in order to determine the degree to which growth differences among families are influenced by competitive environment, seed weight, and date of emergence. The three competitive...

Resource Type:

Dissertation