Biology Commons^™

Reproductive And Mutagenic Effects Of 5-Thio-D-Glucose Injections In Male Mice, Mus Musculus, Icr Strain, Mary E. Mcmanaway

Master's Theses

Adult male ICR mice of proven fertility were intraperitoneally injected daily with 60 mg/kg of 5-thio-D-glucose for 28 days. Body weights of treated male mice were unaffected during the experimental period. Relative testicular weights were significantly reduced at 121 days after initial injections in 5-thio treated males, but no significant decrease was observed at 28 days.

Onset of sterility was estimated to occur at approximately 4 weeks and persisted for 5 to 6 weeks after cessation of treatment at which time fertility was restored.

Beginning with the first injections and continuing for 121 days, the males were mated with untreated …

The Effects Of Photoperiod And Melatonin Injections On The Reproductive System Of Male Mice, Mus Musculus, Icr Strain, Margaret Ann Shugart

Master's Theses

The reproductive effects of long (24L:OD), natural (14L:lOD), and short (1L:23D) photoperiods were studied in the male mouse, Mus musculus, ICR strain. One third of the mice in each photoperiodic regimen were sacrificed after 45 days. Half of the remaining mice in each regimen received daily melatonin (5-methoxy-N-acetyl tryptamine) injections for 45 additional days. Body weights, testicular and accessory sex organ weights were measured and microscopic examinations of the testes were made. Plasma testosterone levels were determined using radioimmunoassay. Other organ (pituitary, kidney, adrenal, thymus, thyroid) weights were also obtained.

Gastrotricha Of Central Wisconsin, Joseph Luka Zakarija

Master's Theses

No abstract provided.

Aging Effects On Ova Maturation And Rna And Protein Synthesis In Vitro, Reinhold Joseph Hutz

Master's Theses

No abstract provided.

The Effect Of Pimozide And Apomorphine On Dopamine-Induced Renin Release, Tissue Renin Content, And 3'5'-Adenosine Monophosphate Levels In Rat Venal Cortical Slices, Visalakshi Rao

Master's Theses

No abstract provided.

Sequential Ultrastructural And Histochemical Alterations Associated With Atresia Of The Preovulatory Follicle In The Rat, Mary Cristine England-Charlesworth

Master's Theses

No abstract provided.

Effects Of Seed Extracts Of Pisum Sativum On Tobacco Mosaic Virus Infectivity, Douglas G. Mack

Master's Theses

No abstract provided.

Further In Vitro Evidence For A Cyclic Adenosine 3', 5'-Monophosphate Mediated Regulation Of Renin Secretion By Dopamine In The Sodium Deficient Rat: Effect Of Theophylline And Dopamine-Receptor Antagonistic Agents, Suzanne Marie Mottel

Master's Theses

No abstract provided.

In Vitro Renin Secretory Responses To Pg₂, Pgf₂Α, Indomethacin And Adrenergic-Receptor Blocker Administration, Brett C. Sheppard

Master's Theses

No abstract provided.

Seasonal Sexual Cycle Of Nerodia Taxispilota (Serpentes: Colubridae) At The Northeastern Edge Of Its Range, David Roland White

Master's Theses

The seasonality of the sexual cycle of Nerodia taxispilota at the northeastern edge of its range was elucidated from specimens collected over a two-year period (1978-1979) from the Appomattox River near Hopewell, Virginia. The investigation centered on morphological changes in the testis of males and vitellogenesis and embryo development in females. Related reproductive parameters also studied were body size differences, seasonal sex ratios, comparative tail lengths, and tail mutilation.

Male and female cycles closely resembled those of other temperate zone colubrids. Spermatogenesis began in May and testis size peaked in late August. Testis length showed a time lag when compared …