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Publication Detail
Genotypic variation in the coccolithophorid speciesEmiliania huxleyi
Abstract
Culture strains ofEmiliania huxleyi have been used for a case-study of intra-specific variation in coccolith morphology. Five types of variation are recognised: degree of completion, degree of calcification, size, malformation and genotypic variation. The genotypic variation is described in detail. It also effects cell physiology and immunological cross-reactions. The different criteria consistently divide the strains into two groups termed here type A and type B. The variation has been stable for several years and under widely varying growth conditions. Biometric analysis is used to investigate the nature of the variation in coccolith morphology. Review of data on oceanicE. huxleyi suggests that the strain types represent two of a limited number of varieties within the global population. © 1991 Elsevier Science Publishers B.V. All rights reserved.
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