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Photomicrographs of: a. Euglena gracilis, b. E. viridis, c. E. polymorpha, d. Euglenaformis proxima, e. Lepocinclis salina, f. Euglena deses, g, j. E. tuberculata, h. Euglenaria sp i. Phacus caudatus, k. Lepocinclis fusiformis, l. L. salina var. vallicauda (20 µm scale).
Source publication
A total number of 24 planktonic Euglenophyte taxa were recorded from East Kolkata Wetlands (EKW), a eutrophic ecosystem of Ramsar site. An illustrated taxonomic account of freshwater Euglenoids is represented in the present communication after a two year long survey (January 2012 to January 2014). Among the 24 taxa, 21 of them were recorded for the...
Citations
... Light microscopic observations, and digital photographs were taken using Nikon microscope (Ni-11, fitted with Nikon Digital Camera DS-Ri1-U3 operated by Nikon Imaging Software NIS-D+EDF). Morphological descriptions and identification of taxa were done using standard monographs like Smith (1944Smith ( , 1950; Randhawa (1958Randhawa ( , 1959, Anand (1981Anand ( , 1998, Prescott (1982), , , Banerjee & Santra (1999), Krishnamurthy (2000), Satpati & al. (2012), Barman & al. (2015), Roy & Pal (2016). The nomenclature status of individual taxa was verified by algae database (https:// www.algaebase.org/search/species). ...
ABSTRACT
The recent studies on the algal diversity of Sundarban Biosphere Reserve resulted in the documentation of a total of 26 taxa of algae belonging to different algal group viz. Cyanophyta, Chlorophyta, Euglenophyta, Rhodophyta and Bacillariophyta.Out of the 26 taxa enumerated, 8 taxa are newly reported from Sundarban Biosphere Reserve and two are new additions for the algal flora of West Bengal
... Hence these freshwater flagellates are considered as good indicators of organic pollution 2,3 . In India various taxonomic studies have been carried out on the diversity of euglenoids [4][5][6][7][8][9][10][11][12][13][14][15] . However, only a few of them deal with their relationship to pollu-tion levels [16][17][18][19][20] . ...
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.
Thirty six taxa of Euglenophytes belonging to the genera Phacus Dujardin (16 taxa), Trachelomonas Ehrenberg (15 taxa) &
Strombomonas Delfandre (5 taxa) have been described and illustrated in this paper. They have been recorded from different
eutrophic localities of West Bengal occurring in four districts (Purba Bardhaman, Alipur Duar, Jalpaiguri & Cooch Behar).
Following 16 taxa are new records for West Bengal viz. Phacus gigas Da Cunha, Phacus hameli Allorgae and Lefèvre, Phacus
onyx Pochmann, Phacus raciborskii Drezepolski, Phacus suecicus Lemmermann, Phacus unguis Pochmann, Trachelomonas
armata (E.) Stein var. longispina Playfair, Trachelomonas armata (E.) Stein var. steinii Lemmermann, Trachelomonas
bernardi Woloszynska, Trachelomonas cylindrica Ehrenberg, Trachelomonas hispida (Perty) Stein, Trachelomonas
sydneyensis Playfair, Trachelomonas volvocina Ehrenberg var. derephora Conrad, Trachelomonas volvocinopsis Svirenko,
Trachelomonas volzii Lemm. var. pellucida Playfair and Strombomonas acuminata (Schmarda) Deflandre var. deflandriana
Conrad & following 11 taxa are new additions to India viz. Phacus acuminatus Stokes var. megaparamylica (Roll) HuberPestalozzi, Phacus suecicus Lemm. var. oidion Pochmann, Trachelomonas dangeardii var. nana (Balech) Tell & Couté,
Trachelomonas gracillima Bal.-Dast., Trachelomonas lismorensis Playfair var. mirabilis Playfair, Trachelomonas mirabilis
Swir. var. obesa (Messik.) Conrad, Trachelomonas raciborskii Woloszynska, Strombomonas australica (Playfair) Deflandre
var. annulata Yamagishi, Strombomonas ensifera (Daday) Deflandre var. brasiliensis Uherkovich, Strombomonas napiformis
(Playfair) Deflandre var. brevicollis (Playfair) Deflandre f. minor Conforti & Joo and Strombomonas verrucosa (Daday)
Deflandre var. verrucosa Deflandre.
Epiphytic algae existing on submerged leaves, stems and roots of Ipomoea aquatica Forssk. (Convolvulaceae) found in Laguna de Bay was studied. Examination of the prepared specimen showed a total of 15 infrageneric taxa belonging to 10 orders, 13 families, 15 genera and 15 species were identified during the study period. Of these taxa, the occurrence of a rare photosynthetic euglenoid, Cryptoglena skujae Marin and Melkonian is reported as new record for the Philippines. Two species are also presented here based on current accepted taxonomic names and these are Limnococcus limneticus (Lemmermann) Komárková, Jezberová, O.Komárek & Zapomelová, and Anabaenopsis circularis (G. S. West) Woloszynska & V. Miller in V. Miller. The algal taxonomic records reported in this survey expand the knowledge regarding diversity and distribution of epiphytic algae from aquatic macrophytes found in Philippine freshwater environment.
