Dissertation/Thesis Abstract

Review of Genetic and Maternal Effects on TSD in Reptiles and Identification of Population Differentiation in Putative TSD Genes in Chelydra serpentina
by Roush, Danielle Marie, M.S., The University of North Dakota, 2018, 175; 10814732
Abstract (Summary)

Variation in sex ratio among clutches of eggs from different females is common in reptiles with TSD, but the mechanisms that cause this variation are unknown. In an effort to shed light on these mechanisms, we first critically review literature that examines variation in temperature-dependent sex determination (TSD) within species. Genetic variation in TSD and maternal effects on TSD are two major mechanisms that have received attention. We outline the types of experiments and data required to demonstrate that a) genetic variation, b) maternally derived steroids, or c) both factors influence variation in sex ratio among clutches. Next, we compare allele frequencies between populations of Chelydra serpentina that differ in thermosensitivity of sex determination and identify population differentiation in putative TSD genes.

Indexing (document details)
Advisor: Rhen, Turk
Commitee: Darby, Brian, Manu, Manu
School: The University of North Dakota
Department: Biology
School Location: United States -- North Dakota
Source: MAI 57/06M(E), Masters Abstracts International
Subjects: Biology
Keywords: Chelydra serpentina, Genetic effects, Maternal effects, Reptiles, Temperature-dependent sex determination
Publication Number: 10814732
ISBN: 978-0-438-06241-2
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