Androgen metabolite measurement in droppings from adult male Eastern Bluebirds (Sialia sialis) by Colleen Elzinga

Dublin Core

Title

Androgen metabolite measurement in droppings from adult male Eastern Bluebirds (Sialia sialis) by Colleen Elzinga

Subject

Biology

Description

This study was undertaken to validate the use of noninvasive techniques for measuring androgen hormone metabolites in the Eastern Bluebird (Sialia sialis). Typically researchers have used blood plasma to measure direct hormone levels within vertebrates; however, there are drawbacks to this method. The initial stress of handling can negatively influence results due to stress hormone interference. Also, the small size of the subject limits your sample volumes, so it is difficult to get a full view of the changes in hormone levels over time. Noninvasive methods are desirable because samples are easily obtained, do not harm the subject, and provide a better view of the pattern of hormone levels over time. This technique must be validated for every species because of variations in specific metabolic pathways. In this study, we used a GnRH challenge to analyze the responsiveness of the HPG axis in adult male Eastern Bluebirds through both testosterone levels in their blood and T-metabolite concentrations in their droppings. Results determined that both blood plasma testosterone and excrement T-metabolites rose in response to the GnRH challenge in such a way that we were able to determine that the noninvasive method of measurement is valid for Eastern Bluebirds.

Creator

Colleen Elzinga

Source

Senior Showcase Poster Presentation

Publisher

Ripon College

Date

April 18, 2017

Rights

The authors reserves all rights.

Format

pdf

Identifier

Major: Chemistry Biology
Evergreen Park, Illinois

Still Image Item Type Metadata

Original Format

poster presentation

Files

Elizinga Senior Seminar Poster 2017.pdf

Citation

Colleen Elzinga, “Androgen metabolite measurement in droppings from adult male Eastern Bluebirds (Sialia sialis) by Colleen Elzinga,” Senior Showcase Digital Collection, accessed July 18, 2018, https://rcseniorshowcase.omeka.net/items/show/58.

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