The effect of temperature on infradian rhythms of reproduction in Ulva fenestrata postels et ruprecht, 1840 (Chlorophyta: Ulvales)

The effect of temperature on infradian rhythms of reproduction in Ulva fenestrata postels et... The influence of temperature on the duration of infradian (over 28 h) rhythms of reproduction in the green alga Ulva fenestrata was studied in the laboratory under controlled conditions combining four temperatures (5, 10, 15, and 20°C), two irradiance levels (40 and 60 μE/(m2 s)) and neutral daylengths (12: 12 h light: dark). The rise in water temperature explained 78.4% of the reduction in the reproduction cycles (from 30 to 5 days). It is suggested that U. fenestrata has an endogenous reproductive rhythm with a period of 5 days. In unfavorable conditions, one or more reproduction cycles are omitted, and formation of gametes or spores attains a periodicity of 10, 15, or more days. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Marine Biology Springer Journals

The effect of temperature on infradian rhythms of reproduction in Ulva fenestrata postels et ruprecht, 1840 (Chlorophyta: Ulvales)

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Publisher
SP MAIK Nauka/Interperiodica
Copyright
Copyright © 2011 by Pleiades Publishing, Ltd.
Subject
Life Sciences; Freshwater & Marine Ecology
ISSN
1063-0740
eISSN
1608-3377
D.O.I.
10.1134/S106307401101007X
Publisher site
See Article on Publisher Site

Abstract

The influence of temperature on the duration of infradian (over 28 h) rhythms of reproduction in the green alga Ulva fenestrata was studied in the laboratory under controlled conditions combining four temperatures (5, 10, 15, and 20°C), two irradiance levels (40 and 60 μE/(m2 s)) and neutral daylengths (12: 12 h light: dark). The rise in water temperature explained 78.4% of the reduction in the reproduction cycles (from 30 to 5 days). It is suggested that U. fenestrata has an endogenous reproductive rhythm with a period of 5 days. In unfavorable conditions, one or more reproduction cycles are omitted, and formation of gametes or spores attains a periodicity of 10, 15, or more days.

Journal

Russian Journal of Marine BiologySpringer Journals

Published: Apr 5, 2011

References

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