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Analyses of the in situ growth rates of Cryptophyceae by use of the mitotic index technique
Author(s) -
Braunwarth C.,
Sommer U.
Publication year - 1985
Publication title -
limnology and oceanography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.7
H-Index - 197
eISSN - 1939-5590
pISSN - 0024-3590
DOI - 10.4319/lo.1985.30.4.0893
Subject(s) - mitotic index , in situ , population , division (mathematics) , biology , growth rate , population density , generation time , cell division , mitosis , chemistry , cell , mathematics , demography , biochemistry , microbiology and biotechnology , arithmetic , organic chemistry , geometry , sociology
Growth rates of Rhodomonas mi nuta v. nannoplanctica and Cryptomonas ovata were estimated by determining the fraction of cells undergoing cell division during 24 h. Acetocarmine was very useful for identifying stages of division (especially double nuclei). Division stages of R. minuta were found in Lake Constance during the night over a period of 16 or 17 h, of C. ovata over almost the entire 24‐h cycle. A comparison of potential growth rates with observed changes in population density indicates that the higher temporal variability of loss rates is more influential for changes in population size.