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

http://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/000003050

Descriptions

Attribute NameValues
Creator
Abstract or Summary
  • 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 the group injected with saline. When the relative potency of AVT was compared with that of a heterologous but structurally similar neurohormone, arginine vasopressin (AVP), no difference was found in the minimum behaviorally effective dose. Testicular androgens are known to influence the expression of sexual behaviors in male vertebrates. To determine whether androgens modify the behavioral effect of neurohormones, the effects of AVT on the incidence of clasping behavior was measured in castrated newts and compared to the effects in castrated, androgen-implanted newts. When castrated for only a short period of time (18 days), AVT increased the incidence of clasping behavior in unimplanted males, but not in androgen-implanted males. In contrast, when males were castrated for longer periods of time (33 and 54 days), AVT elevated the occurrence of clasping behavior in androgen-implanted males, but not in unimplanted newts. The effect of AVT on the incidence of clasping behavior was also measured in hypophysectomized males to determine if the pituitary is required for newts to respond behaviorally to AVT. When injected with AVT, the incidence of courtship was elevated in hypophysectomized males, sham-operated males, and pituitary transplated males. These experiments support the hypothesis that endogenous neurohormones, in addition to androgens, influence the incidence of sexual behaviors in male T. granulosa.
Resource Type
Date Available
Date Copyright
Date Issued
Degree Level
Degree Name
Degree Field
Degree Grantor
Commencement Year
Advisor
Academic Affiliation
Non-Academic Affiliation
Subject
Rights Statement
Peer Reviewed
Language
Digitization Specifications
  • File scanned at 300 ppi (Monochrome) using Capture Perfect 3.0 on a Canon DR-9050C in PDF format. CVista PdfCompressor 4.0 was used for pdf compression and textual OCR.
Replaces
Additional Information
  • description.provenance : Made available in DSpace on 2013-10-01T20:40:08Z (GMT). No. of bitstreams: 1 ZoellerRobertThomas1980.pdf: 980335 bytes, checksum: bf183af0e72a59255babeb7f97cd708d (MD5) Previous issue date: 1979-10-01
  • description.provenance : Approved for entry into archive by Patricia Black(patricia.black@oregonstate.edu) on 2013-09-18T19:23:41Z (GMT) No. of bitstreams: 1 ZoellerRobertThomas1980.pdf: 980335 bytes, checksum: bf183af0e72a59255babeb7f97cd708d (MD5)
  • description.provenance : Approved for entry into archive by Patricia Black(patricia.black@oregonstate.edu) on 2013-10-01T20:40:08Z (GMT) No. of bitstreams: 1 ZoellerRobertThomas1980.pdf: 980335 bytes, checksum: bf183af0e72a59255babeb7f97cd708d (MD5)
  • description.provenance : Submitted by Sergio Trujillo (jstscanner@gmail.com) on 2013-09-18T19:20:31Z No. of bitstreams: 1 ZoellerRobertThomas1980.pdf: 980335 bytes, checksum: bf183af0e72a59255babeb7f97cd708d (MD5)

Relationships

In Administrative Set:
Last modified: 08/17/2017

Downloadable Content

Download PDF
Citations:

EndNote | Zotero | Mendeley

Items