The Effect of Temperature on Vegetative Growth and Sexual Reproduction of Two Diatoms from the Genus Haslea Simonsen
- Authors: Davidovich O.I.1, Davidovich N.A.1, Mouget J.2
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Affiliations:
- Karadag Scientific Station, Vyazemsky Nature Reserve
- Mer-Molécules-Santé (MMS), Université du Maine, Laboratory of MMS
- Issue: Vol 44, No 1 (2018)
- Pages: 8-13
- Section: Article
- URL: https://journals.rcsi.science/1063-0740/article/view/184109
- DOI: https://doi.org/10.1134/S1063074018010030
- ID: 184109
Cite item
Abstract
The effect of temperature on sexual reproduction and the rate of vegetative division were investigated in laboratory experiments with Haslea ostrearia (Gaillon) Simonsen from the Atlantic and H. karadagensis Davidovich, Gastineau et Mouget from the Black Sea. In the range of 10–26°С, a temperature increase was favorable for vegetative growth; the maximum growth rate was recorded at the highest temperature of the range. In contrast to vegetative growth, sexual reproduction of both algal species was effective in the temperature range of 10–18°С, but did not occur at temperatures of 23°С. The optimal temperature for auxosporulation was in H. karadagensis somewhat lower than in H. ostrearia. The determined physiological optimums for sexual reproduction can explain the cell-size distribution that is characteristic of the natural population of H. karadagensis in different seasons of the year.
About the authors
O. I. Davidovich
Karadag Scientific Station, Vyazemsky Nature Reserve
Author for correspondence.
Email: olivdav@mail.ru
Russian Federation, Feodosiya, 298188
N. A. Davidovich
Karadag Scientific Station, Vyazemsky Nature Reserve
Email: olivdav@mail.ru
Russian Federation, Feodosiya, 298188
J.-L. Mouget
Mer-Molécules-Santé (MMS), Université du Maine, Laboratory of MMS
Email: olivdav@mail.ru
France, Le Mans CEDEX 9, 72085