Affiliation:
1. A. N. Severtsov Institute of Ecology and Evolution оf the Russian Academy of Sciences; Coastal Branch of Joint Vietnam-Russia Tropical Science and Technology Research Center
2. Papanin Institute for Biology of Inland Waters оf the Russian Academy of Sciences
3. Coastal Branch of Joint Vietnam-Russia Tropical Science and Technology Research Center
Abstract
A new species, Mallomonas doanii sp. nov, is described from Vietnam based on the morphology of silica scales and bristles observed using transmission electron microscopy (TEM). Scales of M. doanii were found in six localities in four provinces of Vietnam. The species belongs to the section Ouradiotae. The scales of the new species are small in size and broadly oval in shape, without a dome, with scattered papillae on the shield and one or two rows of papillae on the anterior flange, a V-rib with a broadly oval base, shifted to the center and continuous with the anterior submarginal ribs. The bristles of M. doanii have a wide and flattened base and a bifurcated distal end with a wide, rounded middle part. A comparison with species similar in morphological structure (M. ouradion, M. cronbergiae, M. acidophila and M. korshikovii) and data on the distribution and ecological conditions of the new species are provided.
Publisher
Komarov Botanical Institute of the Russian Academy of Sciences