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dc.contributor.authorShowalter, Benjamin
dc.date.accessioned2017-06-30T16:22:00Z
dc.date.available2017-06-30T16:22:00Z
dc.date.issued2017-05-19
dc.identifier.urihttps://repository.tcu.edu/handle/116099117/19849
dc.description.abstractMigration can be defined as the movement of individuals to new areas followed by a return to their natal area to breed. Oncorhynchus mykiss, otherwise known as rainbow trout, exhibits two life history strategies: resident rainbow trout and migratory steelhead trout. Previous research has shown that the decision to migrate is highly heritable, that there are regions of the genome that are associated with migration, and that there are differentially expressed genes between residents and migrants, all confirming that migration has a genetic component. Recently, interest has focused on the GREB1-L gene as studies in several populations of rainbow trout have found alleles within this gene that are associated with migration. This project is aimed to measure allelic associations between GREB1-L and migratory life history in rainbow trout from Sashin Creek, Alaska. Sequence data suggest that all individuals, regardless of their migratory trajectory, had the alleles associated with residency. These results confirm that GREB1-L is locally adapted to different environments and that there are population-specific genetic effects that determine the migratory life history of rainbow trout.
dc.subjectGREB1-L
dc.subjectmigration
dc.subjectsexing
dc.subjectsequencing
dc.subjectrainbow trout
dc.titleMeasuring Associations Between Polymorphisms in the GREB1-L Gene and the Development of Different Migratory Phenotypes in Oncorhynchus mykissen_US
etd.degree.departmentBiology


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