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Light and Growth Medium Effect on Chlorella Vulgaris Biomass Production
Journal of Environmental Chemical Engineering 2 (2014) 665–674 Contents lists available at ScienceDirect Journal of Environmental Chemical Engineering journal homepage: www.elsevier.com/locate/jece Light and growth medium effect on Chlorella vulgaris biomass production Matthew Forrest Blair, Bahareh Kokabian, Veera Gnaneswar Gude * Civil and Environmental Engineering Department, Mississippi State University, Mississippi State, MS 39762, USA ARTICLE INFO ABSTRACT Article history: Algae can serve as feedstock for many high value bioproducts and biofuels production. The key to Received 27 June 2013 economic algal biomass production is to optimize the growth conditions. This study presents the effect of Received in revised form 6 November 2013 light wavelengths and growth medium composition on the growth of Chlorella vulgaris. Different light Accepted 6 November 2013 wavelengths [blue, clear (white), green, and red] were used to test their effect on algal growth. Growth media formulations were varied to optimize the growth media composition for maximized algal biomass Keywords: production. Experimental study was conducted in three phases to evaluate: (1) the effect of different Nutrient optimization light wavelengths; (2) the effect of the recommended growth medium at 25%, 50%, and 100% of Growth rates suggested composition; and (3) the effect of nutrient concentrations (nitrogen and phosphorous). The Chlorella vulgaris Light effect effect of these factors was evaluated through specific algal growth rates and volumetric biomass Volumetric biomass productivity productivities during the entire growth period. In this study, blue light performed better (higher growth rate and biomass productivity) at longer growth periods (10–14 days) compared to clear, red and green light wavelengths. The growth media and nutrient effect results indicate that the growth of C. -
Non-Axenic Microalgae Cultivation in Space – Challenges for the Membrane Μgpbr of the ISS Experiment PBR@LSR
48th International Conference on Environmental Systems ICES-2018-186 8-12 July 2018, Albuquerque, New Mexico Non-axenic microalgae cultivation in space – Challenges for the membrane µgPBR of the ISS experiment PBR@LSR Harald Helisch1, Stefan Belz2, Jochen Keppler3, Gisela Detrell4, Norbert Henn5, Stefanos Fasoulas6, Reinhold Ewald7 Institute of Space Systems, University of Stuttgart, Germany and Oliver Angerer8 German Aerospace Center (DLR), Bonn, Germany Keywords: PBR@LSR, ISS experiment, microalgae, Chlorella vulgaris, long-term cultivation, biofilm The spaceflight experiment PBR@LSR (Photobioreactor at the Life Support Rack) shall demonstrate for the first time the technology and performance of a hybrid life support system – a combination of physico-chemical and biotechnological components – under real space conditions during an operation period of 180 days. To be launched to the International Space Station (ISS) in 2018, PBR@LSR combines the carbon dioxide (CO2) concentrator of ESA’s Life Support Rack (LSR) with an advanced microalgae photobioreactor (PBR). Accommodated in the Destiny module, LSR will concentrate CO2 from the cabin atmosphere. A dedicated interface allows the utilization of the highly concentrated surplus CO2 for the cultivation of the green microalgae species Chlorella vulgaris. Current research at the University of Stuttgart focuses on the fundamental investigation and optimization of non-axenic cultivation processes in µg capable membrane PBRs. This includes the characterization of influences of accompanying bacteria on the non-axenic microalgae culture stability within the PBR suspension loop, photosynthetic capacity as well as overall biomass composition. This paper discusses in general possible influences of emerging bacteria- or algae induced biofilm formation and cell clustering due to non-axenic processing on the long term functionality of µg adapted PBR systems, e.g. -
The Life Cycle of the Parasite Pomphorhynchus Tereticollis in Reference to 0+ Cyprinids and the Intermediate Host Gammarus Spp in the UK
March 2020 The life cycle of the parasite Pomphorhynchus tereticollis in reference to 0+ cyprinids and the intermediate host Gammarus spp in the UK. Matthew J Harris Thesis submitted in partial fulfilment of the requirements of the degree of Master’s By Research Bournemouth University Supervisory team; Iain Green, Robert Britton and Demetra Andreou Acknowledgments I would like to thank all of my supervisors for the support they have given me through the project in regard to their enormous plethora of knowledge. In particular I would like to thank Dr Demetra Andreou as without her support, motivation and can-do attitude I may not have been able to finish this project. It was also Dr Andreou who originally inspired me to purse Parasitological studies and without her inspiration in my undergraduate studies, it is unlikely I would have studied a MRes as parasitology bewilders me like no field I have ever come across. I would also like to thank Dr Catherine Gutman-Roberts for allowing me access to samples that she had previously collected. As well as this, Dr Gutmann-Roberts was always helpful and friendly when questions were directed at her. Finally, I would also like to thank her for the help she gave to me regarding field work. Abstract Pomphorhynchus tereticollis is a recently resurrected parasite species that spans the UK and continental Europe. The parasite is the only Pomphorhynchus spp in the UK and has been researched since the early 1970’s. The species has an indirect life cycle which uses a Gammarus spp as an intermediate host and cyprinids and salmonids as final hosts although the main hosts are Squalis cephalus (S. -
Genetic Diversity of Symbiotic Green Algae of Paramecium Bursaria Syngens Originating from Distant Geographical Locations
plants Article Genetic Diversity of Symbiotic Green Algae of Paramecium bursaria Syngens Originating from Distant Geographical Locations Magdalena Greczek-Stachura 1, Patrycja Zagata Le´snicka 1, Sebastian Tarcz 2 , Maria Rautian 3 and Katarzyna Mozd˙ ze˙ ´n 1,* 1 Institute of Biology, Pedagogical University of Krakow, Podchor ˛azych˙ 2, 30-084 Kraków, Poland; [email protected] (M.G.-S.); [email protected] (P.Z.L.) 2 Institute of Systematics and Evolution of Animals, Polish Academy of Sciences, Sławkowska 17, 31-016 Krakow, Poland; [email protected] 3 Laboratory of Protistology and Experimental Zoology, Faculty of Biology and Soil Science, St. Petersburg State University, Universitetskaya nab. 7/9, 199034 Saint Petersburg, Russia; [email protected] * Correspondence: [email protected] Abstract: Paramecium bursaria (Ehrenberg 1831) is a ciliate species living in a symbiotic relationship with green algae. The aim of the study was to identify green algal symbionts of P. bursaria originating from distant geographical locations and to answer the question of whether the occurrence of en- dosymbiont taxa was correlated with a specific ciliate syngen (sexually separated sibling group). In a comparative analysis, we investigated 43 P. bursaria symbiont strains based on molecular features. Three DNA fragments were sequenced: two from the nuclear genomes—a fragment of the ITS1-5.8S rDNA-ITS2 region and a fragment of the gene encoding large subunit ribosomal RNA (28S rDNA), Citation: Greczek-Stachura, M.; as well as a fragment of the plastid genome comprising the 30rpl36-50infA genes. The analysis of two Le´snicka,P.Z.; Tarcz, S.; Rautian, M.; Mozd˙ ze´n,K.˙ Genetic Diversity of ribosomal sequences showed the presence of 29 haplotypes (haplotype diversity Hd = 0.98736 for Symbiotic Green Algae of Paramecium ITS1-5.8S rDNA-ITS2 and Hd = 0.908 for 28S rDNA) in the former two regions, and 36 haplotypes 0 0 bursaria Syngens Originating from in the 3 rpl36-5 infA gene fragment (Hd = 0.984). -
(Crustacea: Amphipoda) and Their Manipulative Acanthocephalan Parasites
Effect of the environment on the interaction between gammarids (Crustacea : Amphipoda) and their manipulative acanthocephalan parasites Sophie Labaude To cite this version: Sophie Labaude. Effect of the environment on the interaction between gammarids (Crustacea :Am- phipoda) and their manipulative acanthocephalan parasites. Symbiosis. Université de Bourgogne, 2016. English. NNT : 2016DIJOS022. tel-01486123 HAL Id: tel-01486123 https://tel.archives-ouvertes.fr/tel-01486123 Submitted on 9 Mar 2017 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. Université de Bourgogne UMR CNRS 6282 Biogéosciences PhD Thesis Thèse pour l’obtention du grade de Docteur de l’Université de Bourgogne Discipline : Sciences de la vie Spécialité : Biologie des populations et écologie Effect of the environment on the interaction between gammarids (Crustacea: Amphipoda) and their manipulative acanthocephalan parasites Sophie Labaude Jury Demetra Andreou, Senior Lecturer, Bournemouth University Examinateur Iain Barber, Senior Lecturer, University of Leicester Rapporteur Jean-Nicolas -
Chapter 9 in Biology of the Acanthocephala]
University of Nebraska - Lincoln DigitalCommons@University of Nebraska - Lincoln Faculty Publications from the Harold W. Manter Laboratory of Parasitology Parasitology, Harold W. Manter Laboratory of 1985 Epizootiology: [Chapter 9 in Biology of the Acanthocephala] Brent B. Nickol University of Nebraska - Lincoln, [email protected] Follow this and additional works at: https://digitalcommons.unl.edu/parasitologyfacpubs Part of the Parasitology Commons Nickol, Brent B., "Epizootiology: [Chapter 9 in Biology of the Acanthocephala]" (1985). Faculty Publications from the Harold W. Manter Laboratory of Parasitology. 505. https://digitalcommons.unl.edu/parasitologyfacpubs/505 This Article is brought to you for free and open access by the Parasitology, Harold W. Manter Laboratory of at DigitalCommons@University of Nebraska - Lincoln. It has been accepted for inclusion in Faculty Publications from the Harold W. Manter Laboratory of Parasitology by an authorized administrator of DigitalCommons@University of Nebraska - Lincoln. Nickol in Biology of the Acanthocephala (ed. by Crompton & Nickol) Copyright 1985, Cambridge University Press. Used by permission. 9 Epizootiology Brent B. Nickol 9.1 Introduction In practice, epizootiology deals with how parasites spread through host populations, how rapidly the spread occurs and whether or not epizootics result. Prevalence, incidence, factors that permit establishment ofinfection, host response to infection, parasite fecundity and methods of transfer are, therefore, aspects of epizootiology. Indeed, most aspects of a parasite could be related in sorne way to epizootiology, but many ofthese topics are best considered in other contexts. General patterns of transmission, adaptations that facilitate transmission, establishment of infection and occurrence of epizootics are discussed in this chapter. When life cycles are unknown, little progress can be made in under standing the epizootiological aspects ofany group ofparasites. -
New Observations on Green Hydra Symbiosis
Folia biologica (Kraków), vol. 55 (2007), No 1-2 Short Note New Observations on Green Hydra Symbiosis Goran KOVAÈEVIÆ, Mirjana KALAFATIÆ and Nikola LJUBEŠIÆ Accepted September 20, 2006 KOVAÈEVIÆ G., KALAFATIÆ M., LJUBEŠIÆ N. 2007. New observations on green hydra symbiosis. Folia biol. (Kraków) 55: 77-79. New observations on green hydra symbiosis are described. Herbicide norflurazon was chosen as a «trigger» for analysis of these observations. Green hydra (Hydra viridissima Pallas, 1766) is a typical example of endosymbiosis. In its gastrodermal myoeptihelial cells it contains individuals of Chlorella vulgaris Beij. (KESSLER &HUSS 1992). Ultrastructural changes were observed by means of TEM. The newly described morphological features of green hydra symbiosis included a widening of the perialgal space, missing symbiosomes and joining of the existing perialgal spaces. Also, on the basis of the newly described mechanisms, the recovery of green hydra after a period of intoxication was explained. The final result of the disturbed symbiosis between hydra and algae was the reassembly of the endosymbiosis in surviving individuals. Key words: Green hydra, Chlorella, perialgal space, symbiosome, symbiosis reassembly. Goran KOVAÈEVIÆ, Mirjana KALAFATIÆ, Faculty of Science, University of Zagreb, Depart- ment of Zoology, Rooseveltov trg 6, HR-10000 Zagreb, Croatia, E-mail: [email protected] Nikola LJUBEŠIÆ, Ruðer Boškoviæ Institute, Department of Molecular Genetics, Bijenièka cesta 54, HR-10000 Zagreb, Croatia. Symbiosis is one of the most important and most CATINE 1973; RAHAT 1991; SHIMIZU &FUJI- interesting subjects in evolutionary biology. In re- SAWA 2003). Green hydra is a typical example of cent years this area of research was much revived, endosymbiosis. -
Cop1 Zootehnie 1(2019)
Scientific Papers. Series D. Animal Science. Vol. LXII, No. 1, 2019 ISSN 2285-5750; ISSN CD-ROM 2285-5769; ISSN Online 2393-2260; ISSN-L 2285-5750 HELMINTHS AND HELMINTH COMMUNITIES OFORPHEUS DACE (Squalius orpheus Kottelat & Economidis, 2006) FROM STRYAMA RIVER, BULGARIA Diana KIRIN, Mariya CHUNCHUKOVA, Dimitrinka KUZMANOVA Agricultural University – Plovdiv, Department of Agroecology and Environmental Protection 12 Mendeleev Street, 4000, Plovdiv, Bulgaria Corresponding author email: [email protected] Abstract During 2018, studies on the biodiversity and biomonitoring by the biological elements for environmental quality: Squalius orpheus (endemic of Balkan Peninsula) and its helminths and helminth communities were carried out. In 59 specimens of Sq.orpheus, four specimens of intestinal helminths are fixed (Allocreadium isoporum (Kowal et Kulakowskaja, 1957); Caryophyllaeus brachycollis (Janiszewska, 1951); Pomphorhynchus laevis (Müller, 1776); Rhabdochona denudata (Dujardin, 1845)). P. laevis is distinguished with the highest prevalence and mean intensity (66.10% and 1.85, respectively). A. isoporum, P. laevis and Rh. denudata are core species for the helminth communities of Orpheus dace, while C. brachycollis is a component species. The eutrophication effects on the pathways of the parasitic flow and the structure of the helminth communities were traced. The bioindicator significance of the parasitic complexes was discussed. Key words: eutrophication effects, helminth communities, Stryama River, Squalius orpheus. INTRODUCTION Margaritov, 1966; Bauer, 1987; Moravec, 2013). Specimens are fixed and preserved in Stryama River (110.1 km long) is one of the 70% ethyl alcohol. The specimens of largest left tributaries of the Maritsa River in Trematoda and Cestoda are studied by methods Bulgaria. The freshwater ecosystem and the of Zashev and Margaritov (1966); Georgiev et adjacent areas are characterized by great al. -
Predator-Prey Interactions Between the Ciliate Blepharisma Americanum
Vol. 83: 211–224, 2019 AQUATIC MICROBIAL ECOLOGY Published online September 19 https://doi.org/10.3354/ame01913 Aquat Microb Ecol OPENPEN ACCESSCCESS Predator−prey interactions between the ciliate Blepharisma americanum and toxic (Microcystis spp.) and non-toxic (Chlorella vulgaris, Microcystis sp.) photosynthetic microbes Ian J. Chapman1,2, Daniel J. Franklin1, Andrew D. Turner3, Eddie J. A. McCarthy1, Genoveva F. Esteban1,* 1Bournemouth University, Department of Life and Environmental Sciences, Faculty of Science and Technology, Dorset, BH12 5BB, UK 2NSW Shellfish Program, NSW Food Authority, Taree, NSW 2430, Australia 3Centre for Environment, Fisheries and Aquaculture Science (CEFAS), Weymouth, Dorset, DT4 8UB, UK ABSTRACT: Despite free-living protozoa being a major factor in modifying aquatic autotrophic biomass, ciliate−cyanobacteria interactions and their functional ecological roles have been poorly described, especially with toxic cyanobacteria. Trophic relationships have been neglected and grazing experiments give contradictory evidence when toxic taxa such as Microcystis are in - volved. Here, 2 toxic Microcystis strains (containing microcystins), 1 non-toxic Microcystis strain and a non-toxic green alga, Chlorella vulgaris, were used to investigate predator−prey interac- tions with a phagotrophic ciliate, Blepharisma americanum. Flow cytometric analysis for micro- algal measurements and a rapid ultra high performance liquid chromatography-tandem mass spectrometry protocol to quantify microcystins showed that non-toxic photosynthetic microbes were significantly grazed by B. americanum, which sustained ciliate populations. In contrast, despite constant ingestion of toxic Microcystis, rapid egestion of cells occurred. The lack of diges- tion resulted in no significant control of toxic cyanobacteria densities, a complete reduction in cil- iate numbers, and no observable encystment or cannibalistic behaviour (gigantism). -
(Acanthocephala). David Joseph Demont Louisiana State University and Agricultural & Mechanical College
Louisiana State University LSU Digital Commons LSU Historical Dissertations and Theses Graduate School 1978 The Life Cycle and Ecology of Octospiniferoides Chandleri Bullock 1957 (Acanthocephala). David Joseph Demont Louisiana State University and Agricultural & Mechanical College Follow this and additional works at: https://digitalcommons.lsu.edu/gradschool_disstheses Recommended Citation Demont, David Joseph, "The Life Cycle and Ecology of Octospiniferoides Chandleri Bullock 1957 (Acanthocephala)." (1978). LSU Historical Dissertations and Theses. 3276. https://digitalcommons.lsu.edu/gradschool_disstheses/3276 This Dissertation is brought to you for free and open access by the Graduate School at LSU Digital Commons. It has been accepted for inclusion in LSU Historical Dissertations and Theses by an authorized administrator of LSU Digital Commons. For more information, please contact [email protected]. INFORMATION TO USERS This was produced from a copy of a document sent to us for microfilming. While the most advanced technological means to photograph and reproduce this document have been used, the quality is heavily dependent upon the quality of the material submitted. The following explanation of techniques is provided to help you understand markings or notations which may appear on this reproduction. 1.The sign or “target” for pages apparently lacking from the document photographed is “Missing Page(s)” . If it was possible to obtain the missing page(s) or section, they are spliced into the film along with adjacent pages. This may have necessitated cutting through an image and duplicating adjacent pages to assure you of complete continuity. 2. When an image on the film is obliterated with a round black mark it is an indication that the film inspector noticed either blurred copy because of movement during exposure, or duplicate copy. -
Dry Weight and Cell Density of Individual Algal and Cyanobacterial Cells for Algae
Dry Weight and Cell Density of Individual Algal and Cyanobacterial Cells for Algae Research and Development _______________________________________ A Thesis presented to the Faculty of the Graduate School at the University of Missouri-Columbia _______________________________________________________ In Partial Fulfillment of the Requirements for the Degree Master of Science _____________________________________________________ by WENNA HU Dr. Zhiqiang Hu, Thesis Supervisor July 2014 The undersigned, appointed by the Dean of the Graduate School, have examined the thesis entitled Dry Weight and Cell Density of Individual Algal and Cyanobacterial Cells for Algae Research and Development presented by Wenna Hu, a candidate for the degree of Master of Science, and hereby certify that, in their opinion, it is worthy of acceptance. Professor Zhiqiang Hu Professor Enos C. Inniss Professor Pamela Brown DEDICATION I dedicate this thesis to my beloved parents, whose moral encouragement and support help me earn my Master’s degree. Acknowledgements Foremost, I would like to express my sincere gratitude to my advisor and mentor Dr. Zhiqiang Hu for the continuous support of my graduate studies, for his patience, motivation, enthusiasm, and immense knowledge. His guidance helped me in all the time of research and writing of this thesis. Without his guidance and persistent help this thesis would not have been possible. I would like to thank my committee members, Dr. Enos Inniss and Dr. Pamela Brown for being my graduation thesis committee. Their guidance and enthusiasm of my graduate research is greatly appreciated. Thanks to Daniel Jackson in immunology core for the flow cytometer operation training, and Arpine Mikayelyan in life science center for fluorescent images acquisition. -
Increased Temperature Has No Consequence for Behavioral
www.nature.com/scientificreports OPEN Increased temperature has no consequence for behavioral manipulation despite efects on both partners in the interaction between a crustacean host and a manipulative parasite Sophie Labaude1,2*, Frank Cézilly1, Lila De Marco1 & Thierry Rigaud1 Parasites alter many traits of their hosts. In particular, parasites known as “manipulative” may increase their probability of transmission by inducing phenotypic alterations in their intermediate hosts. Although parasitic-induced alterations can modify species’ ecological roles, the proximate factors modulating this phenomenon remain poorly known. As temperature is known to afect host–parasite associations, understanding its precise impact has become a major challenge in a context of global warming. Gammarids are ecologically important freshwater crustaceans and serve as intermediate hosts for several acanthocephalan species. These parasites induce multiple efects on gammarids, including alterations of their behavior, ultimately leading to modifcations in their functional role. Here, experimental infections were used to assess the efect of two temperatures on several traits of the association between Gammarus pulex and its acanthocephalan parasite Pomphorhynchus laevis. Elevated temperature afected hosts and parasites in multiple ways (decreased host survival, increased gammarids activity, faster parasites development and proboscis eversion). However, behavioral manipulation was unafected by temperature. These results suggest that predicted change in temperature may have little consequences on the trophic transmission of parasites through changes in manipulation, although it may modify it through increased infection success and faster parasites development. Abiotic conditions can strongly infuence interspecifc interactions and, ultimately, the dynamics of ecological communities. In direct connection with climate change, the understanding of such efect has become a major challenge in recent years1–3.