Evidence of an endogenous circannual rhythm in growth-rates in dinoflagellates |
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Authors: | E Costas M Varela |
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Affiliation: | Sección de Genética, Hospital Teresa-Herrera, La Coru?a, Spain. |
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Abstract: | Prorocentrum micans and Gonyaulax excavata clonal cultures grown under constant laboratory environmental conditions (continuous light and 20 +/- 1 degree C), over a two-year period, exhibit significative changes in growth rate. When rhythmometrically analyzed by cosinor, a pattern resembling a circannual rhythm became apparent. Significant rhythmometric differences appeared between species. Endogenous rhythms of microorganisms may have ecological implications. |
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