Literaturdatenbank
Literaturdatenbank |
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Butler, J. M. (2008). Morphology, molecules, and delineation of the gulf coast box turtle. Unpublished thesis , University of Florida, Gainesville.
Added by: Sarina Wunderlich (30 Jun 2012 22:00:38 UTC) |
| Resource type: Thesis/Dissertation BibTeX citation key: Butler2008 View all bibliographic details  |
Categories: General Keywords: Emydidae, Genetik = genetics, Habitat = habitat, Nordamerika = North America, Schildkröten = turtles + tortoises, Terrapene, Terrapene carolina Creators: Butler Publisher: University of Florida (Gainesville) |
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| URLs http://purl.fcla.edu/fcla/etd/UFE0022630 |
| Abstract |
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The eastern box turtle (Terrapene carolina) is a widespread and often abundant component of regional faunas. Despite the familiarity of T. carolina, little is known regarding the relationships among recognized subspecies. In the Florida panhandle, an area containing known genetic discontinuities in other turtles, four subspecies of T. carolina are distributed in close proximity. I implemented morphological and molecular analysis to understand the relationships among subspecific T. carolina taxa and explore how lineages are distributed across the Florida panhandle. I performed discriminate function analysis on 31 morphological characters from 723 individual T. carolina to develop canonical functions descriptive of T. carolina taxa. I validated these taxa as distinct evolutionary lineages by comparing mitochondrial DNA sequence fragments. I tested for intergradation between these taxa through analysis of a multilocus microsatellite dataset. I used this dataset to test for genetic structure among box turtles in the Florida panhandle. Morphological functions and mitochondrial DNA sequences may be used to discriminate between T. carolina subspecies. However, specimens from the Florida panhandle exhibit several distinct phenotypes and mitochondrial haplotypes. Despite this apparent geographic overlap of lineages, microsatellite analysis did not reveal genetic structure related to mitochondrial haplotypes, geographic distance or physiographic features. Spatial autocorrelation analysis suggests genetic structuring among box turtles may occur at relatively large geographic scales. The lack of fine-scale genetic structure may be attributed to the presence of transient males, juvenile dispersal or human relocation of T. carolina.
Added by: Sarina Wunderlich |