Index Catalog // ScholarsArchive@OSU

Reproductive cycle of the male newt Taricha granulosa : exogenous and endogenous regulation of plasma androgens

Creator:: Specker, Jennifer Lee
Abstract:: During a 13-month period starting in October of 1976, adult male rough-skinned newts (Taricha granulosa) were collected periodically to study seasonal changes in reproductive status. Plasma androgen concentration, measured by radioimmunoassay, is elevated during autumn and spring (about 50 ng/ml). Winter and summer levels are considerably lower (less than 10...
Resource Type:: Masters Thesis

Endocrine regulation of male sexual behavior in rough-skinned newts, Taricha granulosa : role of neurohormones

Creator:: Zoeller, Robert T.
Abstract:: To determine whether a homologous neurohormone, arginine vasotocin (AVT), can elevate the occurrence of clasping behavior in male rough-skinned newts (Taricha granulosa), intact, sexually inactive males were injected with either AVT or saline. The incidence of courtship was elevated in the group of males injected with AVT, but not in...
Resource Type:: Masters Thesis

Role of male mating behavior in the induction of ovulation in rough-skinned newts, Taricha granulosa

Creator:: McCormack, Christine
Abstract:: To determine whether meiotic maturation of ovarian follicles, ovulation, and oviposition are influenced by male mating behaviors, female rough-skinned newts (Taricha granulosa) were captured prior to contact with males and maintained in simulated pond conditions. Females were either exposed to male courtship and inseminated or were isolated from male contact....
Resource Type:: Masters Thesis

Endocrine regulation of sperm release in an anuran amphibian

Creator:: Whittier, Joan Margaret
Abstract:: The endocrine mechanisms involved in the initiation of sperm release from the vertebrate testis have not been elucidated. A seasonally breeding anuran amphibian, Hyla regilla, was selected as a model for testing the hypothesis that steroid action is involved in gonadotropin-stimulated sperm release. Experiments were carried out in vivo and...
Resource Type:: Masters Thesis

Morphological and endocrine correlates of dominance in male ring-necked pheasants (Phasianus colchicus)

Creator:: Lumas, Kathy A.
Abstract:: An investigation of the correlation between a number of behavioral, morphological and physiological parameters and dominance status of male Ring-necked Pheasants (Phasianus colchicus) was undertaken. Dominant males performed significantly more aggressive behaviors than subordinates and a higher proportion of these behaviors was directed toward distantly ranked subordinates. Animals could also...
Resource Type:: Masters Thesis

Hormonal, experiential and social influences on the reproductive behavior of the vole, Microtus canicaudus

Creator:: Boyd, Sunny K.
Abstract:: To quantify the reproductive behavior of male and female gray-tailed voles, Microtus canicaudus, under conditions of natural estrus, sexually experienced pairs were observed in a standardized behavior test for 10 hours. The total duration of sexual interactions averaged 223 minutes, which is considerably longer than previously published reports on microtines....
Resource Type:: Masters Thesis

The role of luteinizing hormone-releasing hormone in the neuroendocrine control of seasonal reproduction in male rough-skinned newts, Taricha granulosa

Creator:: Zoeller, Robert T.
Abstract:: One hypothesis proposed to explain how the endocrine system controls reproductive cycles in seasonally breeding animals is that the hypothalamus undergoes seasonal changes in sensitivity to negative feedback by gonadal steroids. The result is seasonal changes in the secretion of luteinizing hormone-releasing hormone (LHRH) and gonadotropin secretion. The present experiments...
Resource Type:: Dissertation

The role of perinatal androgens in the development of neuroendocrine and behavioral characteristics of the gray-tailed vole, Microtus canicaudus

Creator:: Spielvogel, Sandra Petersen
Abstract:: These studies examined the role of perinatal androgen in the development of neuroendocrine and behavioral characteristics of gray-tailed voles, Microtus canicaudus. When mature, females exhibited alternating vaginal smear patterns or persistent vaginal cornification; estrogen and progesterone concentrations were not correlated with vaginal smear patterns. Corpora lutea were not observed in...
Resource Type:: Dissertation

Characterization and localization of arginine vasotocin receptors in the brain and kidney of an amphibian

Creator:: Boyd, Sunny K.
Abstract:: Because arginine vasotocin (AVT) activates male sexual behaviors in the rough-skinned newt (Taricha granulosa), quantitative autoradiography with radiolabelled arginine vasopressin (³H-AVP) was used to localize and characterize putative AVT receptors in the brain of this amphibian. Binding of ³H-AVP to sites within the medial pallium was saturable, specific, reversible, of...
Resource Type:: Dissertation

The role of gonadotropin-releasing hormone in the regulation of courtship behavior in the male red-sided garter snake, Thamnophis sirtalis parietalis

Creator:: Smith, Mitchell Todd
Resource Type:: Masters Thesis

ScholarsArchive@OSU

Reproductive cycle of the male newt Taricha granulosa : exogenous and endogenous regulation of plasma androgens

Endocrine regulation of male sexual behavior in rough-skinned newts, Taricha granulosa : role of neurohormones

Role of male mating behavior in the induction of ovulation in rough-skinned newts, Taricha granulosa

Endocrine regulation of sperm release in an anuran amphibian

Morphological and endocrine correlates of dominance in male ring-necked pheasants (Phasianus colchicus)

Hormonal, experiential and social influences on the reproductive behavior of the vole, Microtus canicaudus

The role of luteinizing hormone-releasing hormone in the neuroendocrine control of seasonal reproduction in male rough-skinned newts, Taricha granulosa

The role of perinatal androgens in the development of neuroendocrine and behavioral characteristics of the gray-tailed vole, Microtus canicaudus

Characterization and localization of arginine vasotocin receptors in the brain and kidney of an amphibian

The role of gonadotropin-releasing hormone in the regulation of courtship behavior in the male red-sided garter snake, Thamnophis sirtalis parietalis

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