Genetic variation in the diatom Fragilaria capucina (Fragilariaceae) along a latitudinal gradient across North America

Genetic variation in 126 clones of the planktonic diatom, Fragilaria capucina, collected from seven lakes from Manitoba to Texas, was determined by RAPD analysis. Five primers yielded 48 scorable RAPD fragments in 123 unique combinations. Patterns of genetic variation were analysed by cluster analys...

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Bibliographic Details
Published in:Plant systematics and evolution 1997-01, Vol.204 (1/2), p.99-108
Main Authors: Lewis, Raymond J., Jensen, Susan I., DeNicola, Dean M., Miller, Virginia I., Hoagland, Kyle D., Ernst, Stephen G.
Format: Article
Language:English
Subjects:
Biological taxonomies
Diatoms
DNA
Fresh water
Genetic variation
Lakes
Natural reservoirs
Polymerase chain reaction
Population genetics
Population geography
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Summary:Genetic variation in 126 clones of the planktonic diatom, Fragilaria capucina, collected from seven lakes from Manitoba to Texas, was determined by RAPD analysis. Five primers yielded 48 scorable RAPD fragments in 123 unique combinations. Patterns of genetic variation were analysed by cluster analysis, which showed that most clones grouped together according to the site from which they were collected. This pattern in genetic variation may be a result of the geographically disjunct nature of these populations and/or the different environmental conditions, especially temperature, in the different lakes.
ISSN:0378-2697
1615-6110
DOI:10.1007/BF00982534