Literaturdatenbank
Literaturdatenbank |
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Crenshaw, J. W. (1962). Serum protein variation in an interspecies hybrid swarm of turtles of the genus pseudemys. Evolution, 19(1), 1–15.
Added by: Admin (25 Aug 2008 20:36:56 UTC) Last edited by: Beate Pfau (03 Jun 2010 06:53:05 UTC) |
| Resource type: Journal Article BibTeX citation key: Crenshaw1962 View all bibliographic details  |
Categories: General Keywords: Emydidae, Genetik = genetics, Pseudemys, Pseudemys peninsularis, Pseudemys rubriventris, Schildkröten = turtles + tortoises, Systematik = taxonomy Creators: Crenshaw Collection: Evolution |
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| Abstract |
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Abstract On the basis of external morphology and serum protein electrophoretic patterns, it is concluded that a sample of turtles collected from Broad Acres Lake, Richmond County, North Carolina, was drawn from an interspecies hybrid swarm, Pseudemys floridana × P. rubriventris. Three specimens, two from the Broad Acres Lake population, one from Lake Phelps, Washington County, North Carolina, on the basis of nine characteristics that differ in the two species, were judged to be interspecies hybrids of P. fioridana and P. rubriventris. This conclusion was supported by electrophoretic analyses of their serum proteins which revealed the presence in reduced concentration of a fast-moving globulin fraction characteristic of the sera of P. floridana and not present in that of P. rubriventris. Morphological variation in the hybrid swarm sample ranged from specimens not differentiable from P. floridana to two rubriventris-like individuals which, however, showed clear indications of genetic introgression from floridana. While floridana traits predominated in the sample, most individuals showed some evidences of rubriventris introgression, suggesting a high degree of assortment and recombination of the available genetic material. Quantitative variation in the fast-moving globulin fraction (characteristic of floridana) was found to range from absence of the component in five individuals (characteristic of rubriventris) to some patterns not differentiable from those of floridana. Mean concentration of the fastmoving component as well as mean total protein per unit volume of sample was found to be less for the hybrid groups than for P. floridana. No correlation was found between species characteristic morphological traits and serum protein patterns. Added by: Admin Last edited by: Beate Pfau |