The first data on the testate amoebae of the Coco River in the provinces of Quangnam and Danang, Vietnam
Abstract
First data on the species diversity of testate amoebae of the Coco River in the provinces of Quangnam and Danang (Vietnam) was presented. A total of 55 species and subspecies of testate amoebae belonging to 9 genera and 6 families were identified from 28 samples. Species diversity of testate amoebae of plankton was higher than the bottom samples. The highest frequency of occurrence being of Centropyxis aculeata (64.3%), Netzelia wailesi (39.3%), Difflugia acuminata (32.1%), Arcella discoides scutelliformis (28.6%) and Lesquereusia modesta (28.6%). The most species-rich genera are Difflugia (25), Arcella (12), Centropyxis (5) and Netzelia (4). The species accumulation curve based on the entire dataset was unsaturated and described by the equation y = 12.56N046. The average species richness of testate amoebae per sample in plankton (13.0 ± 3.1) is statistically higher than in the bottom samples (1.8 ± 1.5) (p < 0.001). The result of the redundancy analysis shows that the studied hydrochemical water characteristics (temperature, pH, dissolved oxygen, electrical conductivity and salinity) explained only 31.6% of the variation of testate amoeba diversity, wherein the first and second axes explained 11% and 10.2% of this variation, respectively.
About the Author
Q. H. Tran
Joint Russian-Vietnamese Tropical Research and Technological Center
Viet Nam
Viet Nam
63 Nguyen Van Huyen, Nghia Do, Cau Giay, Ha Noi
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Review
For citations:
Tran Q.H. The first data on the testate amoebae of the Coco River in the provinces of Quangnam and Danang, Vietnam. Vestnik Moskovskogo universiteta. Seriya 16. Biologiya. 2019;74(4):262–269. (In Russ.)
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