Show simple item record

dc.contributor.advisorMacKenzie, Duncan S.
dc.contributor.advisorOwens, David M.
dc.contributor.authorHeck, Jennifer A.
dc.date.accessioned2011-08-15T17:39:43Z
dc.date.available2011-08-15T17:39:43Z
dc.date.issued1990
dc.identifier.urihttp://hdl.handle.net/10920/23175
dc.descriptionv, 39 p.en_US
dc.description.abstractStudies of reproductive endocrinology are necessary for the conservation of critically endangered species such as the Kemp's Ridley sea turtle, Lepidochelys kempi. Among reproductive hormones, the role of estrogen is poorly understood. This examination of the effects of estrogen on hepatic production of vitellogenin, the precursor to yolk protein in oocytes of all lower vertebrates, was conducted to enhance understanding of estrogen cycles as they correlate with the dynamics of ovarian growth in these animals. L. kempi were injected with estradiol and blood was sampled over a 12 week period. During this time, it was found that serum total protein, phosphoprotein and total calcium levels increased significantly. Associated with these changes, a novel band of 205,000 daltons was observed on polyacrylamide gels. Unlike findings in teleost fishes, estrogen did not influence free thyroid hormone binding to plasma proteins in L. kempi. It was concluded that estrogen does induce vitellogenesis in these animals and that the vitellogenin obtained is very similar to that found in other species of fish, amphibians and turtles. This protein may be used in the future to develop techniques which will refine the study of ovarian development in these animals, thereby creating opportunities for conservation of their populations.en_US
dc.description.sponsorshipDepartment of Biology. Texas A&M University. College Station, Texas.
dc.format.mimetypeapplication/pdf
dc.language.isoen_USen_US
dc.publisherKalamazoo Collegeen_US
dc.relation.ispartofKalamazoo College Biology Senior Individualized Projects Collection
dc.relation.ispartofseriesSenior Individualized Projects. Biology;
dc.rightsU.S. copyright laws protect this material. Commercial use or distribution of this material is not permitted without prior written permission of the copyright holder.
dc.titleEstrogen Stimulation of Vitellogenin Production in the Kemp's Ridley Sea Turtleen_US
dc.typeThesisen_US
KCollege.Access.ContactIf you are not a current Kalamazoo College student, faculty, or staff member, email dspace@kzoo.edu to request access to this thesis.


Files in this item

Thumbnail

This item appears in the following Collection(s)

  • Biology Senior Individualized Projects [1489]
    This collection includes Senior Individualized Projects (SIP's) completed in the Biology Department. Abstracts are generally available to the public, but PDF files are available only to current Kalamazoo College students, faculty, and staff.

Show simple item record