Diversity and morphotaxonomy of freshwater Euglenoids in Ahmednagar , Maharashtra (original) (raw)
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Distribution and Diversity of Euglenophyceae in Saroornagar Lake, Hyderabad
The present paper deals with the study of Euglenophyceae in Saroornagar Lake. Samples were collected from four sampling stations for a period of two years and comprehensive physico-chemical analysis was carried out. pH, temperature, carbonates, Free CO 2, bicarbonates(HCO 3-), chlorides, dissolved oxygen (DO), biological oxygen demand (BOD), organic matter (OM), chemical oxygen demand (COD), total hardness, calcium, magnesium, phosphates, silicates, sulphates, nitrates, nitrites, total solids (TS) and total dissolved solids (TDS) played an important role in distribution and diversity of algae. Euglenoid flagellates exhibited higher peaks in winter and found very low in summer. Diversified species of Euglena, Lipocinclis, Phacus and Trachelomonas were reported. The presence of pollution tolerant species, Euglena acus, E. oxyuris, E. gracillis, Lipocinclis ovum and Trachelomonas volvocina indicated high organic pollution of the lake.
Current Science, 2020
Twenty-three species belonging to the class Eugleno-phyceae were recorded from the Museum Lake, Thi-ruvananthapuram, India. A canonical correspondence analysis (CCA) between environmental variables and the dominant euglenophytes indicated interaction with certain physical and chemical parameters, in particular rainfall, electrical conductivity and phosphate versus their distribution in the Museum Lake. The dominant species were Euglena deses, Trachelomonas hispida and Trachelomonas volvocina. The CCA results indicate interaction between a variety of environmental parameters and species abundance. A closer examination suggests some external factor (e.g. evaporation) affecting water quality rather than the environment changing the algal biomass. With low rainfall the phosphate concentration increased from 1.5 to 6.9 mg P/l (likely as a result of anoxic conditions in the muddy bottom) and simultaneously nitrate was (partly) taken up by these dominant algae, as a result of which N : P ratios decreased from 4.5 to 0.7. The present study shows that the dominant euglenoid species co-occur in relatively hard water with high phosphorus concentration, and can be considered as useful bio-indicators in assessing the health and extent of deterioration of a lake ecosystem.
Distribution and Ecology of Euglenoids in Selected Lakes of Tumakuru District, Karnataka
Annual Research & Review in Biology
Aim: This study deals with the distribution and ecology of euglenoids in relation to physicochemical characteristics of water in four lakes of Tumakuru district. Place and Duration of Study: Guluru, Bugudanahalli, Colony and Teeta are the four lakes of Tumakuru district selected for the present study during 2015-17. Methodology: Euglenoids function as indicators of aquatic superiority. Composite samples were taken at two feats depth from surface level on monthly basis for the enumeration of euglenoids. Results: A total of ten species under three genera were identified. Guluru lake harboured 46.66% followed by Colony and Teeta lakes 20% each and Bugudanahalli lake with 13.33%. Seasonally all the lakes recorded maximum density of euglenoids during summer except in Colony lake, where they reached their peak during rainy season. Euglenoids showed significant positive correlation with water temperature (r = 0.664: P < 0.05), Sulphate (r = 0.757: P < 0.05) and Silica (r = 0.775: P &...
Recent Research Advances in Biology, 2020
This study deals with the distribution and ecology of euglenoids in relation to physicochemical characteristics of water in four lakes of Tumkur district. Guluru, Bugudanahalli, Colony and Teeta are the four lakes selected for the present study during 2015-17 and discussed. Euglenoids function as indicators of aquatic superiority. A total of ten species under three genera were identified. Guluru lake harbored 46.66% followed by Colony and Teeta lakes 20% each and Bugudanahalli lake with 13.33%. Seasonally all the lakes recorded maximum density of euglenoids during summer except in Colony lake, where they reached their peak during rainy season. Euglenoids showed significant positive correlation with water temperature (r=0.664: P< 0.05), Sulphate (r=0.757: P<0.05) and Silica (r=0.775: P<0.05) at 5% level. As the euglenoids serve as pollution indicator organisms, moderate density of euglenoids in the lakes investigated indicates that, lakes are tending towards biologically eutrophic condition.
International Journal of Scientific Research in Science and Technology, 2022
Saroornagar Lake is one of the major fresh water-bodies of Hyderabad. The study deals with the influence of physico-chemical parameters on the distribution and diversity of Euglenophyceae. Samples were collected from four sampling stations for a period of two years and comprehensive physico-chemical analysis was carried out. Linear multiple regression analysis (MRA) has been carried out with SPSS software to evaluate the importance of various physico-chemical variables on the growth and development of Euglenophyceae. The physico-chemical parameters played an important role in distribution and diversity of algae. The growth of Euglenophyceae was positively influenced by sulphates, Free CO2, calcium, total hardness, COD and bicarbonates. Negative influence on euglenoids was exerted by temperature, organic matter, total solids, total dissolved solids, magnesium and chlorides. Euglenoid flagellates exhibited higher peaks in winter and found very low in summer. Diversified species of Euglena, Lipocinclis, Phacus and Trachelomonas were reported. Euglena acus, E. gracillis, E. oxyuris, Lipocinclis ovum and Trachelomonas volvocina represent high organic pollution of the lake and indicate high degree of organic pollution.
New records of phytoplankton for Bangladesh. 5. Euglena, Euglenocapsa
Bangladesh Journal of Plant Taxonomy, 2008
This study presents 20 taxa of the genus Euglena and one species of the rare euglenoid genus Euglenocapsa. All these taxa are reported for the first time from some pond ecosystems of Mathbaria in Pirojpur and Bakerganj of Barisal districts of Bangladesh. Keywords: Phytoplankton, New records, Bangladesh, Euglena, Euglenocapsa, PondsDOI: 10.3329/bjpt.v15i1.910Bangladesh J. Plant Taxon. 15(1): 39-46, 2008 (June)