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Dissertations / Theses on the topic 'Temperature-dependent sex determination'

Author: Grafiati

Published: 4 June 2021

Last updated: 20 February 2023

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1

Therrien, Corie L. "Conservational implications of temperature-dependent sex determination." Birmingham, Ala. : University of Alabama at Birmingham, 2008. https://www.mhsl.uab.edu/dt/2008r/therrien.pdf.

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2

Robert, Kylie Anne. "Temperature-dependent sex determination in the viviparous lizard Eulamprus tympanum." Thesis, The University of Sydney, 2003. http://hdl.handle.net/2123/557.

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Abstract There are a remarkable variety of sex determination systems among different animal taxa. In most animals, sex is determined chromosomally. Although in an increasing number of animals sex determination has been found to be influenced primarily by the environment. Species with genotypic sex determination (GSD) have their sex determined at the time of fertilization, by genetic factors alone and those with environmental sex determination (ESD) have their sex determined by environmental factors that act after fertilization. Temperature-dependent Sex Determination (TSD), whereby the

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3

Robert, Kylie Anne. "Temperature-dependent sex determination in the viviparous lizard Eulamprus tympanum." University of Sydney. Biological Science, 2003. http://hdl.handle.net/2123/557.

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Abstract There are a remarkable variety of sex determination systems among different animal taxa. In most animals, sex is determined chromosomally. Although in an increasing number of animals sex determination has been found to be influenced primarily by the environment. Species with genotypic sex determination (GSD) have their sex determined at the time of fertilization, by genetic factors alone and those with environmental sex determination (ESD) have their sex determined by environmental factors that act after fertilization. Temperature-dependent Sex Determination (TSD), whereby the

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4

Dodd, Keela L. "The molecular biology of temperature-dependent sex determination in reptiles." Birmingham, Ala. : University of Alabama at Birmingham, 2007. https://www.mhsl.uab.edu/dt/2008r/dodd.pdf.

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Thesis (Ph. D.)--University of Alabama at Birmingham, 2007.<br>Additional advisors: Asim Bej, Gene Hines, Douglas Watson, Douglas Weigent. Description based on contents viewed Oct. 2, 2008; title from PDF t.p. Includes bibliographical references.

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5

Robert, Kylie. "Temperature-dependent sex determination in the viviparous lizard, Eulamprus tympanum." Connect to full text, 2003. http://hdl.handle.net/2123/557.

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Thesis (Ph. D.)--University of Sydney, 2004.<br>Title from title screen (viewed 5 May 2008). Submitted in fulfilment of the requirements for the degree of Doctor of Philosophy to the School of Biological Sciences, Faculty of Science. Degree awarded 2004; thesis submitted 2003. Appendices contains published articles co-authored by Robert. Includes bibliographical references. Also available in print form.

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6

Emer, Sherri Ann. "Temperature-Dependent Sex Determination in Manouria Emys Emys, The Asian Forest Tortoise." Digital Archive @ GSU, 2007. http://digitalarchive.gsu.edu/biology_theses/11.

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Captive husbandry programs in zoos have documented nesting behavior and have successfully hatched Manouria emys emys, but data on sex determining mechanisms and sex ratios are absent. A total of 30 M. e. emys eggs were artificially incubated at five different temperatures in constant humidity. Mean incubator temperatures were 24.99°C, 25.06°C, 27.18°C, 28.00°C, and 30.79°C. Incubation duration ranged from 60 days to 92 days, and hatching success was 50%. Sex determined by histology and laparoscopy resulted in male differentiation at low temperatures (24.99°C, 27.18°C) and female differentiatio

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7

Warner, Daniel Augustus. "The ecology and evolution of temperature-dependent sex determination in a short-lived lizard." Thesis, The University of Sydney, 2007. https://hdl.handle.net/2123/28095.

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In many reptile species, offspring sex is determined by the temperature these animals experience during embryogenesis, rather than by genetic factors passed from parents to offspring (e.g., sex chromosomes). The adaptive value of this unusual sex-determining mechanism (temperature-dependent sex determination, TSD) has eluded satisfactory explanation since its discovery four decades ago. The most plausible suggestion in this regard (the Charnov-Bull model) proposes that TSD enhances maternal fitness when nest temperature has a differential impact on the fitness of sons versus daughters, s

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8

Quinn, Alexander E., and n/a. "EVOLUTION OF SEX-DETERMINING MECHANISMS IN REPTILES." University of Canberra. Institute for Applied Ecology, 2008. http://erl.canberra.edu.au./public/adt-AUC20090311.120346.

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Reptiles exhibit marked diversity in sex-determining mechanisms. Many species exhibit genotypic sex determination (GSD) with male heterogamety (XX females/XY males), others have GSD with female heterogamety (ZW females/ZZ males), and still others exhibit temperature-dependent sex determination (TSD). The distribution of these mechanisms throughout the reptile phylogeny implies evolutionary lability in sex determination, and in some lineages there has been a number of transitions between GSD and TSD. Despite this diversity, GSD and TSD have traditionally been viewed as mutually-exclusive mechan

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9

Fleming, Alice Ann. "The role of steroidogenic factor 1 in the temperature-dependent sex determination of the red-eared slider turtle /." Full text (PDF) from UMI/Dissertation Abstracts International, 2000. http://wwwlib.umi.com/cr/utexas/fullcit?p9992787.

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10

McGaugh, Suzanne Elaine. "Micro-evolutionary potential of temperature dependent sex determination in a wild population of painted turtles, Chrysemys picta." [Ames, Iowa : Iowa State University], 2009.

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11

Thompson, Molly Marie. "Individual and Interactive Impacts of Mercury and Agriculture on Reproduction in a Freshwater Turtle, Chelydra serpentina." Thesis, Virginia Tech, 2017. http://hdl.handle.net/10919/78262.

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In aquatic turtles, females select nest sites that have a high degree of solar exposure, and exploit recently tilled agricultural fields for nesting, presumably because of increased solar exposure and/or easier nest excavation, and the importance of incubation temperature on survival and offspring phenotype. These same disturbed sites are often contaminated by pollutants and turtles can incorporate high levels of pollutants into their eggs which negatively impact hatch success. For my M.S. research, I investigated turtle nest site selection in a system dominated by agricultural and industrial

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12

Schwoerer, Monette. "Relating climate change to the nesting phenology and nest environment of marine turtles." Master's thesis, University of Central Florida, 2013. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/6015.

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Ectotherms (including marine turtles) being especially sensitive to climate, are at risk to the accelerated rate of human-driven climate change. This study addresses two concerns associated with marine turtles and climate change – the relationship between the timing of marine turtle nesting and sea surface temperature; and the concern over the feminization of marine turtle populations due to rising sand temperatures. Previous studies of loggerhead sea turtles (Caretta caretta) and green sea turtles (Chelonia mydas) have documented the relationship between sea surface temperatures and nesting p

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13

Doody, J. Sean, and n/a. "The ecology and sex determination of the pig-nosed turtle, Carettochelys insculpta, in the wet-dry tropics of Australia." University of Canberra. Applied Science, 2002. http://erl.canberra.edu.au./public/adt-AUC20050404.101052.

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Much of what we know about temperature-dependent sex determination (TSD) in reptiles stems from constant temperature incubation studies in the laboratory. In recent years, as TSD studies moved into the field it became evident that TSD was much more complex than previously thought. The present study attempted to reveal the complexity of TSD, as it relates to other features of the species' biology and physical characteristics tractable only in the field, such as fluctuations in incubation temperature and reproductive life history. To this end I studied the ecology of the turtle Carettochelys ins

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14

Wright, Lucy Isabel. "Insights into the mating systems of green turtle populations from molecular parentage analyses." Thesis, University of Exeter, 2012. http://hdl.handle.net/10036/3695.

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Gaining a good understanding of marine turtle mating systems is fundamental for their effective conservation, yet there are distinct gaps in our knowledge of their breeding ecology and life history, owing largely to the difficulty in observing these highly mobile animals at sea. Whilst multiple mating by females, or polyandry, has been documented in all marine turtle species, the fitness consequences of this behaviour have not been fully investigated. Furthermore, male mating patterns, operational sex ratios and the number of males contributing to breeding populations are poorly understood, im

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15

Abozaid, Hesham Verfasser], Gabriele [Akademischer Betreuer] Hörstgen-Schwark, Bertram [Akademischer Betreuer] [Brenig, and Udo ter [Akademischer Betreuer] Meulen. "Temperature Dependent Sex Determination In Zebrafish (Danio rerio) / Hesham Abozaid. Gutachter: Gabriele Hörstgen-Schwark ; Bertram Brenig ; Udo ter Meulen. Betreuer: Gabriele Hörstgen-Schwark." Göttingen : Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2012. http://d-nb.info/1043721045/34.

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16

Lühmann, Liane-Magdalena [Verfasser], Gabriele [Akademischer Betreuer] Hörstgen-Schwark, Christoph [Akademischer Betreuer] Knorr, and Sven [Akademischer Betreuer] König. "Quantitative and molecular genetic studies on temperature-dependent sex determination of Nile tilapia (Oreochromis niloticus) / Liane-Magdalena Lühmann. Gutachter: Gabriele Hörstgen-Schwark ; Christoph Knorr ; Sven König. Betreuer: Gabriele Hörstgen-Schwark." Göttingen : Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2012. http://d-nb.info/1043765743/34.

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17

Abozaid, Hesham. "Temperature Dependent Sex Determination In Zebrafish (Danio rerio)." Thesis, 2012. http://hdl.handle.net/11858/00-1735-0000-0006-AB49-9.

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18

Marques, Valéria Sofia Carvalho. "Unravelling the sex determination patterns in a temperature sex dependent gecko species." Master's thesis, 2020. https://hdl.handle.net/10216/130669.

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19

Marques, Valéria Sofia Carvalho. "Unravelling the sex determination patterns in a temperature sex dependent gecko species." Dissertação, 2020. https://hdl.handle.net/10216/130669.

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20

LeBlanc, Anne Marie. "Temperature-dependent sex determination in Caretta caretta on two Georgia barrier islands /." 2004. http://www.georgiasouthern.edu/etd/commentframe.php?sid=12&fid=archive/Summer2004/aleblanc/LeBlanc%5FAnne%5FM%5F200405%5FMS.pdf.

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Thesis (M.S.)--Georgia Southern University, 2004.<br>ETD. "A thesis submitted to the Graduate Faculty of Georgia Southern University in partial fulfillment of the requirements for the degree Master of Science." Includes bibliographical references.

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21

Huang, Victoria. "Ontogenetic and mechanistic explanations of within-sex behavioral variation in a lizard with temperature- dependent sex determination." Thesis, 2013. http://hdl.handle.net/2152/23338.

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The leopard gecko (Eublepharis macularius) is a reptile species in which embryonic temperature contributes both to sex determination and within- sex polymorphisms. Its life history makes the leopard gecko a model system for seeking ontogenic and proximate explanations for within-sex variation in sexually dimorphic behavior and neurophysiology, necessary attributes for reproductive success. For my dissertation I have incorporated the role of androgens that potentially modulate incubation temperature effects on behavioral and brain variation, which I approached using embryo and adult leopard gec

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22

Matsumoto, Yuiko. "Genetic networks and epigenetic mechanisms of temperature-dependent sex determination in the red-eared slider turtle, Trachemys scripta." Thesis, 2014. http://hdl.handle.net/2152/30931.

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In the red-eared slider turtle, Trachemys scripta, gonadal sex is determined by the incubation temperature during the mid-trimester of development; temperature effects can be overridden by exogenous ligands if they are administered during the temperature-sensitive period of development. How the physical signal of temperature is transduced into a biological signal that ultimately results in determining gonad sex is not known. My thesis research focuses on five candidate sex determining genes: cyp19a1 (aromatase), Forkhead box protein L2, R-spondin1, Doublesex mab3-related transcription factor 1

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23

Shoemaker, Christina May. "Elucidating the molecular network underlying temperature-dependent sex determination in the red-eared slider turtle, Trachemys scripta." 2009. http://hdl.handle.net/2152/17397.

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Components of the molecular pathway underlying gonadogenesis in organisms with temperature-dependent sex determination (TSD) have been retained from genetic sex determination. Furthermore, although much of this network has been conserved, new functions for these genes have evolved in this different mode of sex determination. We find that the transcription factors Sox9 and Dmrt1 and the hormone Mis are involved in the formation of a testis and/or the repression of an ovary at a male-producing temperature. While Mis expression may be maintained by Sox9, the initial upregulation of Mis in the dev

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24

Lühmann, Liane-Magdalena. "Quantitative and molecular genetic studies on temperature-dependent sex determination of Nile tilapia (Oreochromis niloticus)." Doctoral thesis, 2012. http://hdl.handle.net/11858/00-1735-0000-000D-EF3C-C.

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25

Czerwinski, Michael James. "A Systems Level Analysis of Temperature-Dependent Sex Determination in the Red-Eared Slider Turtle Trachemys Scripta Elegans." Diss., 2016. http://hdl.handle.net/10161/13355.

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<p>Sex determination is a critical biological process for all sexually reproducing animals. Despite its significance, evolution has provided a vast array of mechanisms by which sexual phenotype is determined and elaborated even within amniote vertebrates. The most prevalent systems of sex determination in this clade are genetic and temperature dependent sex determination. These two systems are sometimes consistent within large groups of species, such as the mammals who nearly ubiquitously utilize XY genetic sex determination, or they can be much more mixed as in reptiles that use genetic or te

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