DOCSLIB.ORG

Responses of Algal Populations to Parasitism by Aphelidium Chlorococcarum and Chytrids in an Oregon Sewage Lagoon

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Responses of Algal Populations to Parasitism by Aphelidium Chlorococcarum and Chytrids in an Oregon Sewage Lagoon AN ABSTRACT OF THE THESIS OF Wendy W. Woods for the degree of Doctor of Philosophy in Botany and Plant Pathology presented on August 2, 1984. Title: Responses of Algal Populations to Parasitism by Aphelidium chlorococcarum and Chytrids in an Oregon Sewage Lagoon. Redacted for Privacy Abstract approved: Harry K. Phinney The abundance of algal species and their parasites was monitored weekly for two years in a sewage lagoon at the Corvallis Airport, Oregon. During the cooler months, Euglena species were dominant followed by a Chlamydomonas assemblage in the spring and a predominantly Scenedesmus assemblage in the summer and fall. Parasites infected 14 of the 35 most abundant species of algae. An unidentified chytrid parasitized Scenedesmus obliquus, and a Rhizophydium sp. infected Chlamydomonas species. The most common parasite, Aphelidium chlorococcarum Fott, infected 11 species, particularly species of Scenedesmus. Aphelidium chlorococcarum was isolated in culture for morphological and ultrastructuralstudy. Reclassification of Aphelidium as an Olpidiaceous chytridwas recommended. Only very severe infections had a significant impact on host populations and thesewere rare. Aphelidium chlorococcarum infected less than 10% of the host populations most of the year. The most severe infection observed (74%) was followed bya sharp decrease in the population of S. armatus fora month. Other declines after severe parasitism were small and lasted approximately one week. Certain climatological, chemical, and biological factors were related to the occurrence ofsevere infections. Of these, a dense host population favored severe parasitism the most. Increased precipitation was also associated with severe infections in the fall. Responses of Algal Populations to Parasitism by Aphelidium chlorococcarum and Chytrids in an Oregon Sewage Lagoon by Wendy W. Woods A THESIS submitted to Oregon State University in partial fulfillment of the requirements for the degree of Doctor of Philosophy Completed August 2, 1984 Commencement June 1985 APPROVED: Redacted for Privacy Professor of'"Botany and Plant Pathology in charge of major Redacted for Privacy Head of Department of Botany and Plant Pathology Redacted for Privacy Dean of Gradu School Date thesis is presented August 2, 1984 Typed by Christina W. O'Bryan for Wendy W. Woods ACKNOWLEDGEMENTS Many people have contributed to this project. Special thanks are extended tomy advisor, Harry K. Phinney, who stimulatedmy initial interest in algal culture in wastewater, and whose friendship,advice, criticism and support were invaluable. I also wish to thank C. David McIntire foryears of training and encouragement. Thanks also to the other members ofmy committee: Peter Bottomley, William Denison, JoAnn Leong, Ralph Quatrano, Anne Anderson and HughGardner for their guidance. I am grateful to my father, John Weller, for introducing me to natural history atan early age and for his continuing support. William Oswald and Robert McHugh contributed initially to defining thefocus of this project.Howard Whisler and Larry Gauriloff generously offered their time and suggestions for the taxonomy, culture and ultrastructural study of Aphelidium. I am particularly indebted to Abraham Held for a stimulating interchange of ideas and forhis careful critique of the Aphelidium manuscript. Data and assistance provided by the following people and organizations are appreciated. Nutrient analyses were performed by the Corvallis Environmental Protection Agency. Jerry DeKamm furnished the local climatological and light intensitydata. Larry Lamperti and Eben Owens of theCorvallis Wastewater Treatment Plant originally suggestedthe airport sewage lagoon as a study site, providedinformation on the design of the system and dataon the lagoon. Norman Bishop contributed the culturecollection strains of Scenedesmus. Al Soeldner, Jane Knoper and ChrisWeiss did the electron microscopy,and E. K. Fernald photo- graphed the plates. Hollis Fishelson-Holstinewas the statistical consultant and computerprogrammer. For their friendship and support,I especially thank Phil Larsen, Adrian Allen, Amy Rossman, and NancyAllred, who edited the manuscript, and ChrisO'Bryan for her extraordinary typing skills. Renata Fritz translated relevant German researchpapers, and Vontina Gurarie translated the Russian papers. Financial support for this research includedfunds for electron microscopy, computeranalysis, and a teaching assistantship from the Departmentof Botany and Plant Pathology at Oregon State University. Addi- tional funding for computer analysiswas granted by the Oregon State University Research Office. The Agri- cultural Experiment Station anda grant from Sigma Xi provided supplies. TABLE OF CONTENTS Page INTRODUCTION 1 LITERATURE REVIEW 4 Parasites of Freshwater Algae 5 Impact of Chytrids on Algae 12 Environmental Factors That Favor Chytrid Epidemics 17 Summary 28 DESCRIPTION OF SEWAGE LAGOON 31 MATERIALS AND METHODS 34 Selection of Stations and Sampling Procedure 34 Physical and Chemical Data 35 Enumeration of Algae 36 Enumeration of Parasites 38 Taxonomy of the Algae and Parasites 40 Culture and Ultrastructural Study of Aphelidium chlorococcarum 43 RESULTS 46 Physical and Chemical Data 46 Abundance of Algae 54 Abundance of Parasites 67 Description of Parasites 99 DISCUSSION 143 Impact of Aphelidium chlorococcarum on Algae 143 Impact of Parasitism on the Succession of Species in the Lagoon 150 Environmental Factors that Favor Epidemics 153 Conclusions 168 Recommendations for Control of Para- sitism in Large-Scale Cultures of Algae Grown in Sewage 171 BIBLIOGRAPHY 174 APPENDICES 185 Appendix A: Field Notes 185 Appendix B: Abundance of Algae 190 Appendix C: Abundance of Parasites 201 LIST OF FIGURES Figure Page 1. The Corvallis Airport Sewage Lagoon 32 2. Climatic data for 1979 and 1980 at Corvallis, Oregon 47 3. Influent to Pond I 50 4. Effluent from Pond II 51 5. The concentrations of major nutrients in Pond II from July to October, 1980 53 6. Abundance of the total phytoplankton 55 7. Dominant species of phytoplankton in Pond I of the sewage lagoon 65 8. Dominant species of phytoplankton in Pond II of the sewage lagoon 66 9. The abundance of Scenedesmus obliquus and its parasites: Aphelidium chlorococcarum and Chytrid Species 1 70 10. The abundance of Scenedesmus armatus and its parasite, Aphelidium chlorococcarum 74 11. The abundance of Scenedesmus acuminatus and its parasite, Aphelidium chlorococcarum 78 12. The abundance of Actinastrum hantzschii and its parasite, Aphelidium chlorococcarum 80 13. The abundance of Ankistrodesmus falcatus and its parasite, Aphelidium chlorococcarum 82 14. The abundance of Tetraedron minimum and its parasite, Aphelidium chlorococcarum 84 LIST OF FIGURES (continued) Figure Page 15. The abundance of Dictyosphaerium ehrenbergianum and its parasite, Aphelidium chlorococcarum 86 16. The abundance of Pteromonas angulosa and its parasite, Aphelidium chlorococcarum 88 17. The abundance of Pteromonassp. 1 and its parasite, Aphelidium chloro- coccarum 90 18. The abundance of Chlamydomonas pertusa and its parasite, Rhizophydium sp. 92 19. The abundance of Chlamydomonas ovata and its parasite, Rhizophydium sp. 93 20. The total number of Aphelidium chlorococcarum and Chytrid Species 1 zoospores relative to the host abundance and climatic factors each week 96 21. Stages in the infection of Scenedesmus obliquus by Chytrid Species 1 102 22. Aphelidium chlorococcarum observations 106 LIST OF TABLES Table Page 1. Dominant species in Pond I 57 2. Dominant species in Pond II 58 3. Host range of parasites fromthe sewage lagoon 68 4. Summary of the most significantepisodes of parasitism 94 5. Comparative light microscopic traitsof Aphelidium species 115 6. Ultrastructure of Aphelidium, Rozella and Olpidium 123 LIST OF PLATES I. Differential interference contrast micrographs of Aphelidium chloro- coccarum 129 II. Transmission electron micrographs of early stages of infection by A. chlorococcarum parasitizing S. acuminatus 131 III. Electron micrographs of early stages of infection by A. chlorococcarum parasitizing Scenedesmus armatus (III - 1 and 2) and S. obliquus (III - 3 to 6) 133 IV. Electron micrograph of a zoosporan- gium of A. chlorococcarum parasi- tizing S. acuminatus 135 V. Electron micrographs of A. chloro- coccarum parasitizing S. acuminatus: zoosporangium and dead host cells 137 VI. Serial sections through a zoosporan- gium of A. chlorococcarum in a cell of S.obli3uus UT72.. 139 VII. Differential interference contrast micrographs of Rhizophydium sp. infecting Chlamydomonas ovata 141 RESPONSES OF ALGAL POPULATIONS TO PARASITISM BY Aphelidium chlorococcarum AND CHYTRIDS IN AN OREGON SEWAGE LAGOON INTRODUCTION As the world population increases, so does the need for the more efficient use of diminishing resour- ces. Current wastewater treatment methods are expen- sive and waste valuable nutrients which could be recovered by harvesting algae grown in the sewage. Algae are a concentrated source of high quality protein that can produce greater yields per acre than any other agricultural crop (Venkataraman, 1969). Culturing algae in wastewater is appealing since it is inexpen- sive and it simultaneously addresses the issues of waste disposal, nutrient recovery, water purification and new sources of protein. Research on the culture of algae in wastewater began in the 1950's (Oswald et al., 1953). Since then, demonstration ponds have been built in the USA, Israel, India, Australia, the USSR, Singapore and the Philip- pines. A lack
Load more

Recommended publications
  • Contribution of the Calcifying Green Alga Phacotus Lenticularis to Lake Carbonate Sequestration
    Technische Universität München Wissenschaftszentrum Weihenstephan für Ernährung, Landnutzung und Umwelt Lehrstuhl für Aquatische Systembiologie Contribution of the calcifying green alga Phacotus lenticularis to lake carbonate sequestration Sebastian Lenz Vollständiger Abdruck der von der Fakultät Wissenschaftszentrum Weihenstephan für Ernährung, Landnutzung und Umwelt der Technischen Universität München zur Erlangung des akademischen Grades eines Doktors der Naturwissenschaften genehmigten Dissertation. Vorsitzender: Prof. Dr. Johannes Kollmann Prüfer der Dissertation: 1. Prof. Dr. Jürgen Geist 2. apl. Prof. Dr. Tanja Gschlößl Die Dissertation wurde am 21.01.2020 bei der Technischen Universität München eingereicht und durch die Fakultät Wissenschaftszentrum Weihenstephan für Ernährung, Landnutzung und Umwelt am 23.04.2020 angenommen. So remember to look up at the stars and not down at your feet. Try to make sense of what you see and wonder about what makes the universe exist. Be curious. And however difficult life may seem, there is always something you can do and succeed at. It matters that you don’t just give up. Professor Stephen Hawking (y 14 March 2018) Contents Preface 10 1 Introduction 12 1.1 Carbon cycling and carbonate-water system in alkaline lakes . 12 1.2 Biogenic calcite precipitation . 14 1.3 Calcifying phytoplankton Phacotus lenticularis . 15 1.4 Objectives . 18 1.5 Materials and Methods . 19 1.5.1 Study sites and monitoring concept . 19 1.5.2 Sampling for representative monitoring . 21 1.5.3 Carbonate measurements . 23 1.5.4 Sediment core analysis . 28 2 Calcite production by the calcifying green alga Phacotus lenticularis 31 2.1 Abstract . 31 2.2 Author contributions . 32 2.3 Introduction .
    [Show full text]
  • Old Woman Creek National Estuarine Research Reserve Management Plan 2011-2016
    Old Woman Creek National Estuarine Research Reserve Management Plan 2011-2016 April 1981 Revised, May 1982 2nd revision, April 1983 3rd revision, December 1999 4th revision, May 2011 Prepared for U.S. Department of Commerce Ohio Department of Natural Resources National Oceanic and Atmospheric Administration Division of Wildlife Office of Ocean and Coastal Resource Management 2045 Morse Road, Bldg. G Estuarine Reserves Division Columbus, Ohio 1305 East West Highway 43229-6693 Silver Spring, MD 20910 This management plan has been developed in accordance with NOAA regulations, including all provisions for public involvement. It is consistent with the congressional intent of Section 315 of the Coastal Zone Management Act of 1972, as amended, and the provisions of the Ohio Coastal Management Program. OWC NERR Management Plan, 2011 - 2016 Acknowledgements This management plan was prepared by the staff and Advisory Council of the Old Woman Creek National Estuarine Research Reserve (OWC NERR), in collaboration with the Ohio Department of Natural Resources-Division of Wildlife. Participants in the planning process included: Manager, Frank Lopez; Research Coordinator, Dr. David Klarer; Coastal Training Program Coordinator, Heather Elmer; Education Coordinator, Ann Keefe; Education Specialist Phoebe Van Zoest; and Office Assistant, Gloria Pasterak. Other Reserve staff including Dick Boyer and Marje Bernhardt contributed their expertise to numerous planning meetings. The Reserve is grateful for the input and recommendations provided by members of the Old Woman Creek NERR Advisory Council. The Reserve is appreciative of the review, guidance, and council of Division of Wildlife Executive Administrator Dave Scott and the mapping expertise of Keith Lott and the late Steve Barry.
    [Show full text]
  • Permian–Triassic Non-Marine Algae of Gondwana—Distributions
    Earth-Science Reviews 212 (2021) 103382 Contents lists available at ScienceDirect Earth-Science Reviews journal homepage: www.elsevier.com/locate/earscirev Review Article Permian–Triassic non-marine algae of Gondwana—Distributions, natural T affinities and ecological implications ⁎ Chris Maysa,b, , Vivi Vajdaa, Stephen McLoughlina a Swedish Museum of Natural History, Box 50007, SE-104 05 Stockholm, Sweden b Monash University, School of Earth, Atmosphere and Environment, 9 Rainforest Walk, Clayton, VIC 3800, Australia ARTICLE INFO ABSTRACT Keywords: The abundance, diversity and extinction of non-marine algae are controlled by changes in the physical and Permian–Triassic chemical environment and community structure of continental ecosystems. We review a range of non-marine algae algae commonly found within the Permian and Triassic strata of Gondwana and highlight and discuss the non- mass extinctions marine algal abundance anomalies recorded in the immediate aftermath of the end-Permian extinction interval Gondwana (EPE; 252 Ma). We further review and contrast the marine and continental algal records of the global biotic freshwater ecology crises within the Permian–Triassic interval. Specifically, we provide a case study of 17 species (in 13 genera) palaeobiogeography from the succession spanning the EPE in the Sydney Basin, eastern Australia. The affinities and ecological im- plications of these fossil-genera are summarised, and their global Permian–Triassic palaeogeographic and stra- tigraphic distributions are collated. Most of these fossil taxa have close extant algal relatives that are most common in freshwater, brackish or terrestrial conditions, and all have recognizable affinities to groups known to produce chemically stable biopolymers that favour their preservation over long geological intervals.
    [Show full text]
  • Lateral Gene Transfer of Anion-Conducting Channelrhodopsins Between Green Algae and Giant Viruses
    bioRxiv preprint doi: https://doi.org/10.1101/2020.04.15.042127; this version posted April 23, 2020. The copyright holder for this preprint (which was not certified by peer review) is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under aCC-BY-NC-ND 4.0 International license. 1 5 Lateral gene transfer of anion-conducting channelrhodopsins between green algae and giant viruses Andrey Rozenberg 1,5, Johannes Oppermann 2,5, Jonas Wietek 2,3, Rodrigo Gaston Fernandez Lahore 2, Ruth-Anne Sandaa 4, Gunnar Bratbak 4, Peter Hegemann 2,6, and Oded 10 Béjà 1,6 1Faculty of Biology, Technion - Israel Institute of Technology, Haifa 32000, Israel. 2Institute for Biology, Experimental Biophysics, Humboldt-Universität zu Berlin, Invalidenstraße 42, Berlin 10115, Germany. 3Present address: Department of Neurobiology, Weizmann 15 Institute of Science, Rehovot 7610001, Israel. 4Department of Biological Sciences, University of Bergen, N-5020 Bergen, Norway. 5These authors contributed equally: Andrey Rozenberg, Johannes Oppermann. 6These authors jointly supervised this work: Peter Hegemann, Oded Béjà. e-mail: [email protected] ; [email protected] 20 ABSTRACT Channelrhodopsins (ChRs) are algal light-gated ion channels widely used as optogenetic tools for manipulating neuronal activity 1,2. Four ChR families are currently known. Green algal 3–5 and cryptophyte 6 cation-conducting ChRs (CCRs), cryptophyte anion-conducting ChRs (ACRs) 7, and the MerMAID ChRs 8. Here we 25 report the discovery of a new family of phylogenetically distinct ChRs encoded by marine giant viruses and acquired from their unicellular green algal prasinophyte hosts.
    [Show full text]
  • Hidden Diversity of Plankton in the Soda Lake Nakuru, Kenya, During A
    Hydrobiologia (2013) 702:95–103 DOI 10.1007/s10750-012-1310-y PRIMARY RESEARCH PAPER Hidden diversity of eukaryotic plankton in the soda lake Nakuru, Kenya, during a phase of low salinity revealed by a SSU rRNA gene clone library Wei Luo • Kiplagat Kotut • Lothar Krienitz Received: 12 July 2012 / Revised: 28 August 2012 / Accepted: 31 August 2012 / Published online: 16 September 2012 Ó Springer Science+Business Media B.V. 2012 Abstract A SSU rRNA gene clone library was Our findings reveal a hidden diversity, which would constructed to establish the diversity of eukaryotic not have been detected by traditional observations. plankton in the African soda lake Nakuru during a phase of low salinity (9.7 ppt = hyposaline). Nor- Keywords Chlorophyta Á Clone library Á Lake mally, the lake is mesosaline (up to 50 ppt) and its Nakuru Á Lesser Flamingo Á Phytoflagellates Á phytoplankton is dominated by few species of cyano- Soda lakes Á SSU rRNA bacteria, in particular Arthrospira fusiformis, which is the main food resource of Lesser Flamingos. Our study recovered a unique phytoplankton species composi- Introduction tion characterized by a high diversity of monadoid and coccoid green algae. Out of 77 clones detected, 52 The phytoplankton of saline-alkaline lakes in the Great belonged to Chlorophyta. Many of the chlorophytes African Rift Valley usually is dominated by cyano- were transported from the catchment area into the lake bacteria, mainly Arthrospira fusiformis (Voronichin) through small seasonal rivers and an outflow of the Koma´rek et Lund (often erroneously identified as Nakuru town sewage treatment plant. Other phyloge- ‘‘Spirulina platensis’’), which forms the food base for netic groups detected were Fungi, Cryptophyta, hundreds of thousands of Lesser Flamingos (Phoenic- Jakobida, Alveolata, Stramenopiles, and Metazoa.
    [Show full text]
  • Imgim21 [Ug Cl11 [Mg C/M?I [Ug Cl11 [Mg C/M21 [Ug Cl11 Img C/M21 [Ug Cill Img Clm21 Median 54,L 7,7 1,5 02 32 0,5 3,O 0,4 46,4 6,6
    .. Lebensräume polare On the ecology of racteristics, se other aquatic habi Marina Car Ber. Polarforsch. Meeresforsch. 40 ISSN 1618 - 3193 Marina Carstens c/o Institut füPolarökologi der UniversitäKiel Wischhofstraß 1-3, Geb. 12 D-24148 Kiel Germany E-mail: [email protected] Diese Arbeit ist die leicht verändert Fassung einer Dissertation, die der Mathematisch-Naturwissenschaftlichen Fakultäder Christian-Albrechts- UniversitäKiel im Juni 2001 vorgelegt wurde. Inhaltsverzeichnis Inhaltsverzeichnis Zusammenfassung Summary Einleitung Lebensräum im Ökosyste Meereis Ökologi der Meereistümpe- Erkenntnisse anderer Autoren Ziel der Untersuchungen Terminologie Untersuchungsgebiet Hydrographie Eisbedeckung Eisverhältnissin den Untersuchungsjahren 1993 und 1994 Material und Methoden Untersuchungsmaterial Meereistümpe Vergleichsstationen: Landtümpeund -Seen, Tümpeauf Gletschern und Eisbergen, Proben aus dem marinen Milieu 3.1.2.1 Schmelzwassertümpeauf Gletschern und Eisbergen 3.1.2.2Landtümpe und -Seen 3.1.2.3Proben aus dem marinen Milieu Untersuchungsmethoden Probennahme und in situ-Messungen (Tem eratur, pH-Wert, Leitfähigkeit Sauerstoffkonzentration, PAR, Dimensionen) Bestimmung der Nährstoffkonzentratione Bestimmung der Salinitä Bestimmung der Chlorophyll a-Konzentrationen Bestimmung der Konzentration des partikuläre organischen Materials (CIN-Analyse) Fixierung und Probenaufbereitung füdie mikroskopische Auswertung Quantitative mikroskopische Auswertung Mikroskopische Analyse, Identifizierung und systematische
    [Show full text]
  • Structural Variation and Evolution of Chloroplast Trnas in Green Algae
    Structural variation and evolution of chloroplast tRNAs in green algae Fangbing Qi, Yajing Zhao, Ningbo Zhao, Kai Wang, Zhonghu Li and Yingjuan Wang State Key Laboratory of Biotechnology of Shannxi Province, Key Laboratory of Resource Biology and Biotech- nology in Western China (Ministry of Education), College of Life Science, Northwest University, Xi'an, China ABSTRACT As one of the important groups of the core Chlorophyta (Green algae), Chlorophyceae plays an important role in the evolution of plants. As a carrier of amino acids, tRNA plays an indispensable role in life activities. However, the structural variation of chloroplast tRNA and its evolutionary characteristics in Chlorophyta species have not been well studied. In this study, we analyzed the chloroplast genome tRNAs of 14 species in five categories in the green algae. We found that the number of chloroplasts tRNAs of Chlorophyceae is maintained between 28–32, and the length of the gene sequence ranges from 71 nt to 91 nt. There are 23–27 anticodon types of tRNAs, and some tRNAs have missing anticodons that are compensated for by other types of anticodons of that tRNA. In addition, three tRNAs were found to contain introns in the anti-codon loop of the tRNA, but the analysis scored poorly and it is presumed that these introns are not functional. After multiple sequence alignment, the 9-loop is the most conserved structural unit in the tRNA secondary structure, containing mostly U-U-C-x-A-x-U conserved sequences. The number of transitions in tRNA is higher than the number of transversions. In the replication loss analysis, it was found that green algal chloroplast tRNAs may have undergone substantial gene loss during the course of evolution.
    [Show full text]
  • Freshwater Algae in Britain and Ireland - Bibliography
    Freshwater algae in Britain and Ireland - Bibliography Floras, monographs, articles with records and environmental information, together with papers dealing with taxonomic/nomenclatural changes since 2003 (previous update of ‘Coded List’) as well as those helpful for identification purposes. Theses are listed only where available online and include unpublished information. Useful websites are listed at the end of the bibliography. Further links to relevant information (catalogues, websites, photocatalogues) can be found on the site managed by the British Phycological Society (http://www.brphycsoc.org/links.lasso). Abbas A, Godward MBE (1964) Cytology in relation to taxonomy in Chaetophorales. Journal of the Linnean Society, Botany 58: 499–597. Abbott J, Emsley F, Hick T, Stubbins J, Turner WB, West W (1886) Contributions to a fauna and flora of West Yorkshire: algae (exclusive of Diatomaceae). Transactions of the Leeds Naturalists' Club and Scientific Association 1: 69–78, pl.1. Acton E (1909) Coccomyxa subellipsoidea, a new member of the Palmellaceae. Annals of Botany 23: 537–573. Acton E (1916a) On the structure and origin of Cladophora-balls. New Phytologist 15: 1–10. Acton E (1916b) On a new penetrating alga. New Phytologist 15: 97–102. Acton E (1916c) Studies on the nuclear division in desmids. 1. Hyalotheca dissiliens (Smith) Bréb. Annals of Botany 30: 379–382. Adams J (1908) A synopsis of Irish algae, freshwater and marine. Proceedings of the Royal Irish Academy 27B: 11–60. Ahmadjian V (1967) A guide to the algae occurring as lichen symbionts: isolation, culture, cultural physiology and identification. Phycologia 6: 127–166 Allanson BR (1973) The fine structure of the periphyton of Chara sp.
    [Show full text]
  • New Records of Some Phytoplankton for Bangladesh: Class - Chlorophyceae
    Bangladesh J. Plant Taxon. 27(1): 79‒83, 2020 (June) © 2020 Bangladesh Association of Plant Taxonomists NEW RECORDS OF SOME PHYTOPLANKTON FOR BANGLADESH: CLASS - CHLOROPHYCEAE *, MD. ALMUJADDADE ALFASANE MALIHA MEHNAZ, ASHIKA AKHTAR, MST. AYESHA, MD. ATAUL GANI1, MAHMOUD MOUSTAFA2, SALLY NEGM3, SHAHIMA ISLAM 4 AND Z.N. TAHMIDA BEGUM Department of Botany, University of Dhaka, Dhaka-1000, Bangladesh Key words: New records; Phytoplankton; Chlorophyceae; Bangladesh. Abstract The paper records 6 species of phytoplankton under the class Chlorophyceae namely, Pteromonas golenkiniana Pascher belonging to Family Phacotaceae; Pediastrum biradiatum var. biradiatum Meyen.belonging to Family Hydrodictyaceae; Scenedesmus alternas var. indicus Hortob. and Scenedesmus quadricauda var. inermis Playfair belonging to Family Scenedesmaceae ; Teilingia excavata (Rafls) Bourelly and Cosmarium vexatum W. West var. vexatum W. West belonging to Family Desmidaceae from Sylhet Division of Bangladesh which are all new records for Bangladesh. Introduction Studies on phytoplanktonic members of Chlorophyceae have been made sporadically from fresh water of Sylhet Division of Bangladesh. So far, there are large number of taxonomic studied of different species of phytoplankton under Class Chlorophyceae made (Alfasane et al. 2019; Abdel-Kareem, 2009; Ahmed et al. 2008; Khondker et al. 2008; Islam and Alfasane2001a,b; 2002a,b; 2005; Islam et al. 1992; Islam 1973; Islam and Begum, 1970). The literature cited above showed that the members of the Chlorophyceae have not been studied from Sylhet Division of Bangladesh. Islam and Irfanullah 2005 have explored some of the genera of tea gardens at Srimangal. The samples were collected from different parts of Shari Goyain River, Piyain River and Madhabpur Lake of Sylhet division.
    [Show full text]
  • Spring Phytoplankton and Periphyton Composition: Case Study from a Thermally Abnormal Lakes in Western Poland
    Biodiv. Res. Conserv. 36: 17-24, 2014 BRC www.brc.amu.edu.pl DOI 10.2478/biorc-2014-0010 Submitted 27.02.2014, Accepted 27.12.2014 Spring phytoplankton and periphyton composition: case study from a thermally abnormal lakes in Western Poland Lubomira Burchardt1*, František Hindák2, Jiří Komárek3, Horst Lange-Bertalot4, Beata Messyasz1, Marta Pikosz1, Łukasz Wejnerowski1, Emilia Jakubas1, Andrzej Rybak1 & Maciej Gąbka1 1Department of Hydrobiology, Faculty of Biology, Adam Mickiewicz University, Umultowska 89, 61-614 Poznań, Poland 2Institute of Botany, Slovak Academy of Sciences, Dúbravská cesta 14, 84523 Bratislava, Slovakia 3Institute of Botany AS CR, Dukelská 135, 37982 Třeboň, Czech Republic 4Botanisches Institut der Universität, Johann Wolfgang Goethe – Universität, Siesmayerstraße 70, 60054 Frankfurt am Main, Germany * corresponding author (e-mail: [email protected]) Abstract: Getting to know the response of different groups of aquatic organisms tested in altered thermal environments to environmental conditions makes it possible to understand processes of adaptation and limitation factors such as temperature and light. Field sites were located in three thermally abnormal lakes (cooling system of power plants), in eastern part of Wielkopolska region (western Poland): Pątnowskie, Wąsosko-Mikorzyńskie and Licheńskie. Water temperatures of these lakes do not fall below 10°C throughout the year, and the surface water temperature in spring is about 20˚C. In this study, we investigated the species structure of the spring phytoplankton community in a temperature gradient and analyzed diversity of periphyton collected from alien species (Vallisneria spiralis) and stones. 94 taxa belonging to 56 genera of algae (including phytoplankton and periphyton) were determined. The highest number of algae species were observed among Chlorophyta (49), Bacillariophyceae (34) and Cyanobacteria (6).
    [Show full text]
  • 7 Systematics of the Green Algae
    7989_C007.fm Page 123 Monday, June 25, 2007 8:57 PM Systematics of the green 7 algae: conflict of classic and modern approaches Thomas Pröschold and Frederik Leliaert CONTENTS Introduction ....................................................................................................................................124 How are green algae classified? ........................................................................................125 The morphological concept ...............................................................................................125 The ultrastructural concept ................................................................................................125 The molecular concept (phylogenetic concept).................................................................131 Classic versus modern approaches: problems with identification of species and genera.....................................................................................................................134 Taxonomic revision of genera and species using polyphasic approaches....................................139 Polyphasic approaches used for characterization of the genera Oogamochlamys and Lobochlamys....................................................................................140 Delimiting phylogenetic species by a multi-gene approach in Micromonas and Halimeda .....................................................................................................................143 Conclusions ....................................................................................................................................144
    [Show full text]
  • Page 1 植物研究雜誌 J. Jpn. Bot. 80: 197-207 (2005) Two Species Of
    植物研究雑誌 J. J. Jpn. Bo t. 80: 80: 197-207(2005) Two Species of Chlorogonium (Volvocales ，Chlorophyceae) from Japan Takashi Takashi NAKADA a， Atsusi NAKAZAWA b and Hisayoshi NOZAKI a aDepartment aDepartment of Biological Sciences ， Graduate School of Science ，University of Tokyo ， Hongo 7-3-1 ，Bunkyo-ku ，Tokyo ，113 ・0033 JAPAN; E 司 mail: nozaki@biol ふ u-tokyo.ac.jp bRIKEN (The Institute of Physical and Chemical Research) ， Hirosawa 2-1 ，Wako ，Saitama ， 351-0198 JAPAN (Received on December 7，2004) Strains Strains from two species of Chlorogonium were isolated from Japanese soil samples ， and and were examined with light and electron microscopy. A molecular phylogeny based on rbcL rbcL sequences was also constructed for these strains. One of the two species ，Chloro- gonium gonium elongatum (P. A. Dang.) France ， has not been previously studied in culture from Japan. Japan. The other species was identified as Chlorogonium kasakii Nozaki ， which has not been been previously recorded from Japan. Key words: Chlorogonium ，Chlorophyceae ，culture strain ，distribution ，taxonomy. Chlorogonium Ehrenb. (Haematococca- light microscope. These species can be relia- ceae ，Volvocales ， Chlorophyceae) is a uni- bly distinguished using an electron micro- cellular cellular genus characterized by its spindle- scope and examination of pyrenoid stability shaped shaped vegetative cells (e. g. ，Smith 1950). under photoheterotrophic culture condition Ettl Ettl (1 980) distinguished this genus from (Nozaki et al. 1998). Therefore ， the records Chlamydomonas Ehrenb. by its first trans- of C. euchlorum and C. elongatum from verse verse cell division without protoplasmic ro- Japan 訂 'e to be re 四 assessed using newly iso- tation.
    [Show full text]