DIET SPECIALIZATION AND GENERALIZATION TRADEOFFS IN THE MUSTARD HERBIOVRE SCAPTOMYZA FLAVA

Persistent Link:
http://hdl.handle.net/10150/612560
Title:
DIET SPECIALIZATION AND GENERALIZATION TRADEOFFS IN THE MUSTARD HERBIOVRE SCAPTOMYZA FLAVA
Author:
Augur, Alana Anita
Issue Date:
2016
Publisher:
The University of Arizona.
Rights:
Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
Abstract:
Evolutionary tradeoffs occur when the fixation of a beneficial trait reduces the effectiveness of another one. In a complex environment, a population with a highly variable mixture of traits may increase the mean fitness. Specialists on the other hand, may fix alleles optimal in one environment, and thereby give up the benefit of thriving in a different environment. My senior thesis study aims to test whether the maintenance of variable traits is beneficial when the environment is variable and what, if any, tradeoffs arise as a result of specialization. I created replicated populations of a drosophilid fly species called Scaptomyza flava and evolved these in three different environments, two specialized and one generalized, for 10 generations. Emergence time, survival, and preference for environment were phenotypically tested for the different populations of flies in all environment types. Emergence time depended on both the environment in which they developed and on the population from which they came. This suggests that tradeoffs exist between specialized and generalized populations that affect their development on both types of environments.
Type:
text; Electronic Thesis
Degree Name:
B.S.
Degree Level:
Bachelors
Degree Program:
Honors College; Biology
Degree Grantor:
University of Arizona
Advisor:
Whiteman, Noah

Full metadata record

DC FieldValue Language
dc.language.isoen_USen
dc.titleDIET SPECIALIZATION AND GENERALIZATION TRADEOFFS IN THE MUSTARD HERBIOVRE SCAPTOMYZA FLAVAen_US
dc.creatorAugur, Alana Anitaen
dc.contributor.authorAugur, Alana Anitaen
dc.date.issued2016-
dc.publisherThe University of Arizona.en
dc.rightsCopyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.en
dc.description.abstractEvolutionary tradeoffs occur when the fixation of a beneficial trait reduces the effectiveness of another one. In a complex environment, a population with a highly variable mixture of traits may increase the mean fitness. Specialists on the other hand, may fix alleles optimal in one environment, and thereby give up the benefit of thriving in a different environment. My senior thesis study aims to test whether the maintenance of variable traits is beneficial when the environment is variable and what, if any, tradeoffs arise as a result of specialization. I created replicated populations of a drosophilid fly species called Scaptomyza flava and evolved these in three different environments, two specialized and one generalized, for 10 generations. Emergence time, survival, and preference for environment were phenotypically tested for the different populations of flies in all environment types. Emergence time depended on both the environment in which they developed and on the population from which they came. This suggests that tradeoffs exist between specialized and generalized populations that affect their development on both types of environments.en
dc.typetexten
dc.typeElectronic Thesisen
thesis.degree.nameB.S.en
thesis.degree.levelBachelorsen
thesis.degree.disciplineHonors Collegeen
thesis.degree.disciplineBiologyen
thesis.degree.grantorUniversity of Arizonaen
dc.contributor.advisorWhiteman, Noahen
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