Genetic variation of Gracilaria cervicornis (Rhodophyta) gametophytes from the Canary Islands

Genetic variability of gametophytic populations of Gracilaria cervicornis from three localities sampled in the Canary Islands (Spain) was examined by isozyme electrophoresis. Seventeen putative alleles corresponding to 16 gene loci were compared. The genetic variability of populations (percentage of...

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Published inEuropean journal of phycology Vol. 31; no. 2; pp. 143 - 147
Main Authors Sosa, P.A., Cabrera-Pérez, M.A., Garcia-Reina, G.
Format Journal Article
LanguageEnglish
Published Taylor & Francis Group 01.05.1996
Subjects
Canary Islands
electrophoresis
genetic differentiation
genetic variability
Gracilaria cervicornis
isozymes
Marine
Rhodophyta
ASE, Atlantic, Canary Is
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Summary:Genetic variability of gametophytic populations of Gracilaria cervicornis from three localities sampled in the Canary Islands (Spain) was examined by isozyme electrophoresis. Seventeen putative alleles corresponding to 16 gene loci were compared. The genetic variability of populations (percentage of polymorphic loci, mean number of alleles per locus and average gene diversity) was low, with a high number of fixed alleles. These results suggest that the genetic structure of the populations of G. cervicornis from the Canary Islands may be due to a predominance of vegetative propagation and low sporeling recruitment. Some heterogeneity was observed at two polymorphic loci which could be due to random drift. The values obtained in the present study are consistent with the genetic variation described for other red seaweeds with a predominance of asexual reproduction.
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ISSN:0967-0262
1469-4433
DOI:10.1080/09670269600651311