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Two new species of green snow algae from Upstate New York, Chloromonas chenangoensis sp. nov. and Chloromonas tughillensis sp. nov. (Volvocales, Chlorophyceae) and the effects of light on their life cycle development

Authors :
Jesse D. Berman
Haldre S. Rogers
Paris R. Miller
Jeffrey B. Ryba
Ronald W. Hoham
Joy H. Felio
Source :
Phycologia. 45:319-330
Publication Year :
2006
Publisher :
Informa UK Limited, 2006.

Abstract

Two new species of Volvocalean green snow algae are described from Upstate New York, Chloromonas chenangoensis and Chloromonas tughillensis. According to rbcL sequence analysis, these species belong to a subclade of five snow species of Chloromonas that includes Cr. brevispina, Cr. nivalis and Cr. pichinchae. These species have zoosporangia/gametangia (cell packs) that are propelled by flagella. The life cycles of Cr. chenangoensis and Cr. tughillensis include a change in cell shape from oblong to spherical before the loss of the cell wall. Using 8-h laboratory experiments, a peak in the change of cell shape occurred at 4 h for Cr. chenangoensis and between 2 and 4 h for Cr. tughillensis after the onset of light, and this was followed by a decline in change of cell shape for both species. Spherical cells peaked between 6 and 8 h for Cr. chenangoensis and at 8 h for Cr. tughillensis. Maximum total matings occurred at 4 h for Cr. chenangoensis and 6 h for Cr. tughillensis, which was followed by a p...

Details

ISSN :
23302968 and 00318884
Volume :
45
Database :
OpenAIRE
Journal :
Phycologia
Accession number :
edsair.doi...........7efe5da0315ff68ace5d4fc1f2380d9f
Full Text :
https://doi.org/10.2216/04-103.1