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Dissertations / Theses on the topic 'Marine red alga'

Author: Grafiati

Published: 3 June 2025

Last updated: 1 August 2025

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1

Paul, Nicholas Andrew School of Biological Earth &amp Environmental Sciences UNSW. "The ecology of chemical defence in a filamentous marine red alga." Awarded by:University of New South Wales. School of Biological, Earth and Environmental Sciences, 2006. http://handle.unsw.edu.au/1959.4/24304.

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I investigated the ecological functions of halogenated secondary metabolites from the red alga Asparagopsis armata, their localisation in specialised cells and also their cost of production. A. armata produces large amounts of halogenated metabolites ( &lt 20 ??g / mg dry weight) that are sequestered in gland cells, as was demonstrated with light, epifluorescence and transmission electron microscopy. Cellular structures were identified that likely assist the release of metabolites from the gland cells to the algal surface. The halogenated metabolites of A. armata have multiple ecological roles

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2

Klepacki, Karel Joan. "Cell Division in the Multicellular Marine Red Alga Agardhiella subulata." W&M ScholarWorks, 1994. https://scholarworks.wm.edu/etd/1539625873.

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3

Turner, Roger David. "Translocation studies in the red alga Delesseria sanguinea (Huds.) Lamour." Thesis, University of Leeds, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.254604.

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4

Plumb, Jeremy. "Population dynamics and endophytic flora of Chondrus crispus (Rhodophyta) : a temporal study." Thesis, Bath Spa University, 1999. http://researchspace.bathspa.ac.uk/1584/.

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A temporal long-term study of the population structure and dynamics of the red alga Chondrus crispus at Lilstock, Somerset (Bristol Channel), the British Isles, and an investigation of its associated green and brown endophytic algal flora were undertaken from January 1994 to September 1996. The population of C. crispus was composed of plants which consisted of a basal holdfast from which arose numerous fronds in varying stages of development, with or without reproductive fronds (cystocarps or tetrasporangial sori). Plants were found with only gametophyte (haploid) or tetrasporophyte (diploid)

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5

Carter, Alan Robert. "Studies on the biology of the economic marine red alga Gelidium pristoides (Turner) Kuetzing (Gelidiales : Rhodophyta)." Thesis, Rhodes University, 1987. http://hdl.handle.net/10962/d1004774.

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Various aspects of the biology of the intertidal agarophyte, Gelidium pristoides, were investigated, with the aim of providing information that would assist in formulating a management policy for this economic seaweed resource. G.pristoides occurs as tufts comprising as many as 40 individual plants, representing all three conspicuous life history stages, that are linked by the intertwining of their basal creeping axes. Individual plants consist of a system of branched creeping axes, which is largely responsible for colonizing surrounding substrata, from which one or more erect flattened fronds

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6

Longford, Sharon Rae Faculty of Science UNSW. "The ecology of epiphytic bacteria on the marine red alga Delisea pulchra." Awarded by:University of New South Wales, 2007. http://handle.unsw.edu.au/1959.4/36783.

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Bacteria are ubiquitous to marine living surfaces, taking on a broad spectrum of roles from mutualistic to pathogenic. Despite their universality, much remains unknown about their basic ecology and interactions with higher organisms. To address this gap, this thesis firstly examines the bacterial communities associated with three co-occurring marine eukaryote hosts from temperate Australia: the demosponge Cymbastela concentrica, the subtidal red macroalga Delisea pulchra and the intertidal green macroalga Ulva australis. Molecular characterisation of the bacterial communities was undertaken us

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7

Tajra, FÃbio Solon. "Biotechnological potential of the red marine alga Hypnea musciformis (HML) applied to Dentistry." Universidade Federal do CearÃ, 2010. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=5285.

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FundaÃÃo Cearense de Apoio ao Desenvolvimento Cientifico e TecnolÃgico<br>Dental Caries is an infectious disease naturally multi-factorial that begins in the childhood, able to spread its intensity and prevalence according to the mouth ambient conditions of each host. The risk of the patients to develop, in some time of their lives, carious lesions can be measured through a complex analysis using health determinant factors and other specific factors of the health-disease process. Since the dental caries forward diagnostic as well as the review of the auxiliary determinant factors of the dental

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8

Chaves, Renata Pinheiro. "Primary structure of two isolectinas of the red marine alga Solieria filiformis (KÃtzing) P.W.Gabrielson." Universidade Federal do CearÃ, 2013. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=11901.

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Lectins are ubiquitous proteins that has domain(s) for recognition and binding to carbohydrates and that can decipher the glicocode in the structures of the glycans linked to soluble glycoproteins and membrane. Molecular interactions based on protein-carbohydrate recognition play key roles in numbers biological processes, such as: cellular communication, gametes recognition, embryonic development, and immune response, among others. Lectins from algae are poorly studied compared to plant lectins and this fact is due to the difficulty of obtaining material for study. The isolectins isolated from

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9

Lluisma, Arturo O. "Cloning and characterization of genes involved in carbohydrate metabolism in the marine red alga Gracilaria gracilis." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/nq24752.pdf.

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10

Nascimento, Fernando Edson Pessoa do. "Identification of proteins from the marine red macroalga Hypnea musciformis by proteomic analysis." reponame:Repositório Institucional da UFC, 2014. http://www.repositorio.ufc.br/handle/riufc/18311.

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NASCIMENTO, Fernando Edson Pessoa do. Identificação de proteínas da macroalga marinha vermelha Hypnea musciformis por análise proteômica. 2014. 62 f. : Dissertação (mestrado) - Universidade Federal do Ceará, Centro de Ciências Agrárias, Departamento de Engenharia de Pesca, Fortaleza-CE, 2014<br>Submitted by Nádja Goes (nmoraissoares@gmail.com) on 2016-07-14T13:19:27Z No. of bitstreams: 1 2014_dis_fepnascimento.pdf: 1476110 bytes, checksum: a37b0bfbc43de7460d0259fd1a190bb2 (MD5)<br>Approved for entry into archive by Nádja Goes (nmoraissoares@gmail.com) on 2016-07-14T13:19:45Z (GMT) No. of bitst

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11

Maschek, John Alan. "Chemical Investigation of the Antarctic Marine Invertebrates Austrodoris kerguelenensis & Dendrilla membranosa and the Antarctic Red Alga Gigartina skottsbergii." Scholar Commons, 2011. http://scholarcommons.usf.edu/etd/3236.

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The marine realm and, in particular, the Antarctic benthos is largely unexplored and understudied. The chemical investigation reported herein reveals not only the biodiversity, but how that biodiversity manifests remarkable chemical diversity. In our continuing study of the nudibranch Austrodoris kerguelenensis, we have isolated a diverse suite of diterpenoid glyceride esters, palmadorins D - S (2.32 - 2.47), one of which is the first reported halogenated diterpene from a dorid nudibranch. Utilizing genomic data from collaborators, we have investigated the chemical diversity from phylogenet

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12

Nobre, Clareane Avelino Simplicio. "Isolation, purification and partial characterization of the primary structure of a ficobiliproteÃna from the red marine alga Hypnea musciformis (Wulfen) Lamouroux." Universidade Federal do CearÃ, 2015. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=14214.

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Conselho Nacional de Desenvolvimento CientÃfico e TecnolÃgico<br>Seaweeds are a rich reserve of substances with biotechnological interest, among these substances it is possible to highlight the phycobiliproteins. These molecules are water-soluble proteins covalently linked to pigments with linear tetrapyrrole structure called bilin, also known as accessory pigment. Thus, the phycobiliproteins form a complex named phycobilisomes, which is a primary structure of light-gathering, showing photosynthetic function. These structures are found in red and Cyanophyceae seaweed. Phycobiliproteins isolate

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13

AraÃjo, Glacio Souza. "Immunostimulant effect of sulfated polysaccharides from the red marine alga Gracilaria caudata in sexual reversion of Nile tilapia, Oreochromis niloticus (LINNAEUS, 1766) under adverse conditions." Universidade Federal do CearÃ, 2006. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=351.

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CoordenaÃÃo de AperfeiÃoamento de Pessoal de NÃvel Superior<br>Machos de tilÃpia chegam a crescer de 1,8 a 2,5 vezes mais rÃpido do que as fÃmeas, sob condiÃÃes de cultivo intensivo. Assim, as estratÃgias para obter populaÃÃes monossexo estÃo focadas na produÃÃo de lotes de alevinos machos. A produÃÃo de indivÃduos 100% machos atravÃs do uso do andrÃgeno 17-α-metiltestosterona Ã considerada a tÃcnica mais efetiva e de menor custo. No entanto, o uso de hormÃnios e o aumento na densidade de cultivo tendem a afetar adversamente a saÃde dos organismos cultivados, aumentando os Ãndices de mort

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14

Nylund, Göran M. "Epibiosis of red algae and algal metabolites as settlement inhibitors of the barnacle Balanus improvisus Darwin." Göteborg [Sweden] : Dept. of Marine Botany, Göteborg University, 1999. http://bibpurl.oclc.org/web/20311.

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Thesis (master's)--Göteborg University, 1999.<br>Title from PDF t.p. (viewed on Sept. 25, 2007). At head of title: Tjärno Marine Biological Laboratory. Includes bibliographical references (p. 13-14).

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15

Graham, Sylvia Lynne. "Growth and grazing of microzooplankton in response to the harmful alga Heterosigma akashiwo in prey mixtures /." Online version, 2008. http://content.wwu.edu/cdm4/item_viewer.php?CISOROOT=/theses&CISOPTR=305&CISOBOX=1&REC=8.

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16

Truxal, Laura T. "Characterization of novel compounds isolated from Karenia brevis cultures." View electronic thesis, 2008. http://dl.uncw.edu/etd/2008-3/rp/truxall/lauratruxal.pdf.

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17

Pettitt, T. R. "Lipid metabolism and membrane function in two species of marine red algae." Thesis, Bucks New University, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.382614.

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18

Fakee, Jameel. "The isolation and characterisation of secondary metabolites from selected South African marine red algae (Rhodophyta)." Thesis, Rhodes University, 2013. http://hdl.handle.net/10962/d1001472.

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Secondary metabolites from natural sources are fast growing as popular drug leads. The structural novelty and favourable biological activity that these compounds display contribute to their popularity as drugs of the future. Examples of such compounds include the potent anticancer drug paclitaxel isolated from the bark of a yew tree as well as the more commonly known analgesic aspirin which stems from the bark of the willow tree. The biological activities exhibited by these secondary metabolites are vast and range from antimicrobial to anticancer activity to mention but a few. As a result, the

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19

Mmonwa, Lucas Kolobe. "Phylogeography and epifauna of two intertidal seaweeds on the coast of South Africa." Thesis, Rhodes University, 2009. http://eprints.ru.ac.za/1583/.

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20

Steyn, Paul-Pierre. "The ecophysiology of Gelidium Pristoides (Turner) Kuetzing : towards commercial cultivation." Thesis, Nelson Mandela Metropolitan University, 2009. http://hdl.handle.net/10948/1117.

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The ecophysiology of the red alga Gelidium pristoides (Turner) Kuetzing was investigated in an effort to establish a technique for commercial cultivation. The seaweed is of commercial importance in South Africa where it is harvested from the intertidal zone rocky shores along the coast. It is dried and exported abroad for the extraction of agar. Yields and quality could be improved by cultivation in commercial systems. However, attempts at growing the seaweed in experimental systems have all ended in failure. This study aimed to describe the conditions in which the seaweed grows naturally; and

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21

Knott, Michael George. "Isolation, structural characterisation and evaluation of cytotoxic activity of natural products from selected South African marine red algae." Thesis, Rhodes University, 2012. http://hdl.handle.net/10962/d1015460.

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The medicinal chemistry of selected marine algae indigenous to South Africa was investigated. Following the isolation and characterisation of a number of new and known compounds, the associated in vitro cytotoxic profiles of these new compounds was investigated. Plocamium maxillosum yielded two new cyclic polyhalogenated monoterpenes which were characterised as 2E-chloromethine-4E-chlorovinyl-4-methyl-5-cyclohexen-1-one (2.1) and 2Z-chloromethine-4E-chlorovinyl-4-methyl-5-cyclohexen-1-one (2.2) on the basis of one and two dimensional NMR spectroscopic data and MS analysis. These compounds were

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22

Case, Rebecca Biotechnology &amp Biomolecular Sciences Faculty of Science UNSW. "Molecular- and culturebased approaches to unraveling the chemical cross-talk between Delisea pulchra and Ruegeria strain R11." Awarded by:University of New South Wales. School of Biotechnology and Biomolecular Sciences, 2006. http://handle.unsw.edu.au/1959.4/30394.

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Delisea pulchra is a red macroalga that produces furanones, a class of secondary metabolites that inhibit the growth and colonization of a range of micro- and macroorganisms. In bacteria, furanones specifically inhibit acyl homoserine lactone (AHL)- driven quorum sensing, which is known to regulate a variety of colonization and virulence traits. This thesis aims to unveil multiple aspects of the chemically mediated interactions between an alga and its bacterial flora. It was demonstrated that the quorum sensing genetic machinery of bacteria is laterally transferred, making traditional 16S rRNA

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23

Levine, Michael R. Muller-Parker Gisèle. "The effects of season and microhabitat on the distribution and nutritional contributions of two algal symbionts in the intertidal anemone Anthopleura xanthogrammica /." Online version, 2010. http://content.wwu.edu/cdm4/item_viewer.php?CISOROOT=/theses&CISOPTR=335&CISOBOX=1&REC=11.

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24

Nagel, Kathryn. "The effects of sympatric and allopatric hab species on calanoid copepod swimming behavior." Thesis, Georgia Institute of Technology, 2013. http://hdl.handle.net/1853/50273.

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Harmful algal blooms, commonly referred to as red tides, occur yearly with dramatic impacts on marine ecology, coastal economies, and human health. As a consequence, research into the zooplankton grazers that consume HABs is highly important. However, changes in ocean temperature may increase the range of many HABs, exposing historically naive copepods to new species and their associated chemicals. Little research into the impact of allopatric verses sympatric species, particularly on the immediate behavioral impact, has been performed, leaving the indirect fitness effects of HAB exposure a

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Knott, Michael George. "The natural product chemistry of South African Plocamium species." Thesis, Rhodes University, 2003. http://hdl.handle.net/10962/d1004920.

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The brine shrimp lethality assay was used as a preliminary tool to screen eighteen seaweeds collected from the South African coast. Of the seaweeds tested, the red algae Plocamium corallorhiza and Hypnea rosea, and the green alga Halimeda sp., showed the most potent activity. The chemical investigation of P. corallorhiza resulted in the isolation and structural elucidation of five previously undescribed secondary metabolites, along with three known compounds and four possible artifacts of the extraction process. Standard spectroscopic methods and comparison with known compounds were used to de

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Odom, Rachel. "The next "killer" algae? Assessing and mitigating invasion risk for aquarium strains of the marine macroalgal genus Chaetomorpha." Master's thesis, University of Central Florida, 2012. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/5363.

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Biological invasions threaten the ecological integrity of natural ecosystems. Anthropogenic introductions of non-native species can displace native flora and fauna, altering community compositions and disrupting ecosystem services. One often-overlooked vector for such introductions is the release of aquarium organisms into aquatic ecosystems. Following detrimental aquarium-release invasions by the “killer alga” Caulerpa taxifolia, aquarium hobbyists and professions began promoting the use of other genera of macroalgae as “safe” alternatives. The most popular of these marine aquarium macroalgae

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27

BRACCHI, VALENTINA ALICE. "The pleistocene marine terraces of Le Castella and Capo Colonna (Calabria, Southern Italy): a paleoecological study of the coralligenous build-ups and associated bioclastic facies." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2012. http://hdl.handle.net/10281/28152.

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Autochthonous carbonate build-ups are mainly formed by encrusting coralline algae, which are one of the most important carbonate sediment contributors in the benthic communities of the Mediterranean area. They represent one of the most productive ecosystems in temperate regions and currently develop on Mediterranean hard and soft bottoms with a patch distribution along the coast. Several types of assemblages have been described so far, due to the high heterogeneity of coralline growth-forms, distributed from the intertidal down to 160 m water depth, from rhodolith-beds to coralligenous build

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28

Felício, Rafael de. "Produtos naturais marinhos: identificação de metabólitos fenólicos halogenados na macroalga Bostrychia tenella (Rhodomelaceae, Rhodophyta) e potencial biológico de micro-organismos endofíticos associados." Universidade de São Paulo, 2010. http://www.teses.usp.br/teses/disponiveis/60/60138/tde-27112013-110828/.

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O ambiente marinho desponta como uma fonte natural importante devido à sua fantástica diversidade orgânica, que permanece praticamente inexplorada. Abordagens químicas e biológicas de organismos marinhos, atualmente, representam uma área de pesquisa ampla e promissora, visto a constante descoberta de diversos metabólitos com propriedades medicinais variadas, além de um arsenal metabólico praticamente ilimitado. Algas vermelhas, com destaque para a família Rhodomelaceae, são exímias produtoras de metabólitos halogenados aos quais são atribuídos importantes atividades biológicas. Micro-organismo

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29

Foster, Kristi A. "Field Ecology Patterns of High Latitude Coral Communities." NSUWorks, 2011. http://nsuworks.nova.edu/occ_stuetd/82.

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Some climate models predict that, within the next 30-50 years, sea surface temperatures (SSTs) will frequently exceed the current thermal tolerance of corals (Fitt et al. 2001; Hughes et al. 2003; Hoegh-Guldberg et al. 2007). A potential consequence is that mass coral bleaching may take place (i) during warm El Niño-Southern Oscillation (ENSO) events which are predicted to occur in some regions more frequently than the current 3-7 year periodicity (Hoegh-Guldberg 1999; Sheppard 2003) or (ii) perhaps as often as annually or biannually if corals and their symbionts are unable to acclimate to the

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30

Fabbri, Natacha. "De l’utilité de l'harmonie : Mersenne, Descartes e Galilei." Doctoral thesis, Scuola Normale Superiore, 2006. http://hdl.handle.net/11384/86131.

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31

Jen, Ya-Ching, and 任雅罄. "Immunological and antitumor activity assays for the marine red alga Gracilaria tenuistipitata." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/86180935454789662735.

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碩士<br>國立臺灣大學<br>海洋研究所<br>94<br>The marine red alga Gracilaria tenuistipitata (Gracilariaceae) was assayed in vitro for proliferation stimulation in murine macrophage and antitumor activity against MDAMB-231, MIA Paca-2 and Hep G2. The bioactive substances were extracted in phosphate buffer saline and hot water, followed by purification and biochemical characterization. It appeared that both saline and hot-water extracts could significantly stimulate macrophage proliferation and, on the contrary, inhibit tumor cell growth. However, the isopropanol -precipitated polysaccharide had greater stimul

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Stirk, Wendy Ann. "Aspects of structure, growth and morphogenesis in a new filamentous red alga (Ceramiaceae, Rhodophyta)." Thesis, 1993. http://hdl.handle.net/10413/10496.

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Pteroceramium, a descriptive name given to an undescribed winged species closely related to Ceramium, has uniaxial filamentous thallus construction with pseudodichotomous branching. Alternate branches become dominant. This pattern of growth is referred to as cellulosympodial growth. All growth is from an apical cell which cuts off subapical cells. The subapical cells develop into axial cells. Each axial cell cuts off six pericentral cells in a ring around its apical pole. The pericentral cells divide further to form the cortical band. Pc1 always forms on the outer face of the thallus as determ

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Graber, Melodie A. "Natural products from temperate and tropical marine algae." Thesis, 1997. http://hdl.handle.net/1957/33899.

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Huang, Yao-ming. "Photobioreactor cultivation of the cell and tissue cultures derived from marine red macroalga Agardhiella subulata." Thesis, 2001. http://hdl.handle.net/1957/32802.

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Jongaramruong, J. "Studies of marine natural products in Tasmania." Thesis, 2002. https://eprints.utas.edu.au/20529/1/whole_JongaramruongJongkolnee2002_thesis.pdf.

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Isolation and structure elucidation of secondary metabolites from two red algae, Plocamium cartilagineum and Laurencia filiformis, together with the sea hare Aplysia parvula are discussed. In addition, chemical relationships between the sea hare Aplysia parvula and the red alga Laurencia filiformis were also investigated. Some details of studies from an ascidian Polyandrocarpa lapidosa, a bryozoan Watersipora lapidosa, a bryozoan Bugula dentata and its associated nudibranch Tambje verconis, as well as a bryozoan Cribricellina ruin and its associated pycnogonid Pseudopallene ambigua were includ

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Moghaddam, Mehran Fallah. "Structural and biosynthetic studies on marine eicosanoids and other oxylipins." Thesis, 1991. http://hdl.handle.net/1957/36535.

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YANG, SHIH-YUN, and 楊詩韻. "Systematics and molecular phylogeny of the marine red algal family Liagoraceae (Rhodophyta) from Taiwan." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/e4u898.

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碩士<br>國立臺東大學<br>生命科學研究所<br>96<br>This thesis research was focused on the molecular systematics and comparative carposporophyte development of the marine red algal family Liagoraceae from Taiwan. Two research approaches were applied during this study: one is comparative morphological observations and one is comparative molecular phylogenetic analyses based on rbcL and LSU sequences. The molecular analyses showed that there are at least nine genera present in the Liagoraceae from Taiwan: Akalaphycus, Dermonema, Ganonema, Helminthocladia, Izziella, Liagora, Liagoropsis, Yamadaella and Stenopeltis

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Lin, Wen-Chien, and 林文謙. "Taxonomic revision and molecular phylogeny of the marine red algal genus Halymenia (Halymeniaceae, Rhodophyta)from Taiwan." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/aa4dq9.

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碩士<br>國立臺灣海洋大學<br>海洋生物研究所<br>102<br>Halymenia is one of the large marine red algal genera and is widely distributed in subtidal zones of the tropical, subtropical and temperate regions; it distribution widely in Taiwan and occurs throughout the year, but western coast is more scarce. The genus comprises about 69 species around the world. Based on the thallus morphology, this genus can be grouped into two types: Feathery-type and Prostrate -type. The generic morphology include mostly dark red, soft slimy, with a discoid holdfast. Previous studies on the taxonomy of Halymenia from Taiwan were ma

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Chuang, Ya-Chu, and 莊雅筑. "Molecular phylogeny and species diversity of the marine red algal genus Yonagunia (Halymeniaceae, Rhodophyta) from Taiwan." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/08332701181106569822.

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碩士<br>國立臺灣海洋大學<br>海洋生物研究所<br>100<br>The previous studies on the taxonomy of Yonagunia from Taiwan were mainly focused on the marine flora investigation. Liu (2006) had discussed the taxonomic problem of Yonagunia from Taiwan, but her study results were largely relying on rbcL sequence analyses. In this study I focused the genus Yonagunia from Taiwan to infer the phylogenetic relationships between Yonagunia and Grateloupia and to clarify the development of auxiliary cell ampullar filaments by molecular analyses and morphological observation to improve the species diversity and distribution of Y

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Jiang, Zhi-dong. "Novel oxylipins and heterocycles from the Rhodophyta and Cyanophyta." Thesis, 1992. http://hdl.handle.net/1957/36329.

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