Recent Contributions to the Eukaryote Tree of Life
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Cédric Berney has made recent contributions to understanding the diversity of eukaryotic lineages. As part of NERC-funded projects with David Bass, they explored molecular, ecological, and morphological diversity of predatory amoebae like Vampyrellida and Variosea. They used lineage-specific primers to discover hidden diversity within parasitic Ascetosporea and characterized some previously unknown rhizarian lineages morphologically. A combined 18S-28S dataset helped resolve deep relationships within Rhizaria and defined several sub-groups.
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Diatoms are unicellular algae with silica cell walls that play an important role in the global carbon cycle and oxygen production. They are highly responsive to iron limitation, downregulating iron-dependent pathways and upregulating iron-independent alternatives. Ocean iron fertilization experiments have shown diatom blooms in high nutrient low chlorophyll regions of the ocean in response to added iron, but diatoms may also be co-limited by silica.
Photosynthetic euglenids
Photosynthetic euglenids originated through a secondary endosymbiosis where a heterotrophic euglenid engulfed a prasinophyte-like green alga and maintained it as a permanent endosymbiont. While the majority live in freshwater, a few species live in marine or brackish habitats. Molecular markers have helped resolve taxonomic confusions and establish phylogenetic relationships among photosynthetic euglenids, though the genus Euglena remains polyphyletic. Fragments of the 18S rDNA gene can be used to identify autotrophic euglenid species with over 90% efficiency.
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My master's thesis project presentation on Transcriptomics of Iron Limitation in Phaeocystis antarctica supervised by Assist. Prof. Ahmed Moustafa (who surprised me with slide 2 :)
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Dr. A. Sankaranarayanan of the C.G. Bhakta Institute of Biotechnology in Surat District, Gujarat, India studies the ecology of diatoms. Diatoms are found in both marine and freshwater environments and can be either attached to substrates or free-floating. In marine environments, diatoms have adaptations like gas vesicles that allow them to regulate their buoyancy to absorb optimal nutrients. Freshwater diatom growth depends on factors like temperature, silica levels, water flow, and pollution. They are useful indicators of water quality.
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This document describes 15 genera of diatoms: Coscinodiscus, Ditylum, Eucampia, Guinardia, Leptocylindrus, Pleurosigma, Rhizosolenia, Skeletonema, Stephanopyxis, Thalassionema, Thalassiosira, Thalassiothrix, Chaetoceros, Bacteriastrum, and Asteromphalus. For each genus it provides the classification, description, cell size, and distribution. The genera described represent common marine planktonic diatoms found worldwide.
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‘NATIONAL CONFERENCE ON MAN AND ENVIRONMENT’ October 15 – 16, 2012
Organized by
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Bacterial associations with the hydromedusa Nemopsis bachei and scyphomedusa ...
This document describes a study comparing the bacterial communities associated with two jellyfish species, Nemopsis bachei and Aurelia aurita, collected from coastal waters of the North Atlantic Ocean. Bacterial communities associated with each jellyfish species were distinct from surrounding seawater communities and from each other. N. bachei hosted Gammaproteobacteria, Bacteroidetes and Alphaproteobacteria, including potential symbionts like Tenacibaculum sp. A. aurita hosted potential symbionts from the order Mycoplasmatales and more unclassified bacteria and Cyanobacteria. The results suggest different jellyfish species in the North Atlantic promote growth of distinct microbial communities and could differentially impact bioge
Bacterial associations with the hydromedusa Nemopsis bachei and scyphomedusa ...
This document describes a study comparing the bacterial communities associated with two jellyfish species, Nemopsis bachei and Aurelia aurita, collected from coastal waters of the North Atlantic Ocean. Bacterial communities associated with each jellyfish species were distinct from surrounding seawater communities and from each other. N. bachei hosted Gammaproteobacteria, Bacteroidetes and Alphaproteobacteria, including potential symbionts like Tenacibaculum sp. A. aurita hosted potential symbionts from the order Mycoplasmatales and more unclassified bacteria and Cyanobacteria. The results suggest different jellyfish species in the North Atlantic promote growth of distinct microbial communities and could differentially impact bioge
Exploring the microbial diversity associated with coral reef environments.
This document explores the microbial diversity associated with coral reef environments. It begins by describing coral reefs as some of the most biologically diverse ecosystems, home not only to corals but also fish, seabirds, and other organisms. It then discusses several specific coral reef locations, including the Great Barrier Reef and Mesoamerican Barrier Reef System. The document outlines the high biodiversity of coral reefs and their mutually beneficial relationship with microscopic organisms. It explores the microbial diversity of coral reefs and some of the roles microorganisms play, as well as methods used to study microbial communities. Finally, it examines several case studies of microbial diversity at specific coral reef locations and outlines future directions for research.
URBE introduction
The URBE research unit studies environmental and evolutionary biology through three main areas of research: freshwater ecology, evolutionary genetics and ecology, and environmental physiology and toxicology. The unit has 33 staff members including 17 PhD students and 7 senior researchers. Research is conducted at different organizational levels from genes to entire ecosystems. Projects include studies of aquatic ecosystems, population genetics of invasive species, and the physiological responses of organisms to pollutants and environmental stressors.
rucker_final
- Two species of parasites were identified from the digestive tracts of 13 bonnethead sharks captured in Tampa Bay, Florida: the tapeworm Phoreiobothrium tiburonis and the roundworm Capillaria sp.
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- Statistics on the mean intensity, median intensity, and location of each parasite species within the sharks are provided.
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EVE 161 Winter 2018 Class 10
The document describes a meta-analysis of microbial community samples collected by the Earth Microbiome Project (EMP) that used coordinated protocols and analytical methods to explore patterns of diversity at an unprecedented scale. By tracking individual bacterial and archaeal ribosomal RNA gene sequences across multiple studies, the analysis resulted in both a reference database providing global context to DNA sequence data and an analytical framework for incorporating future study data to further characterize Earth's microbial diversity. The meta-analysis found that standardized environmental descriptors and new analytical methods, particularly using exact sequences instead of clustered operational taxonomic units, enabled comparisons across studies and exploration of large-scale ecological patterns.
Do pitcher plants control the assembly of pitcher microbiomes?
The document summarizes a study investigating the factors influencing the assembly of microbial communities within the pitchers of three Nepenthes plant species in Singapore. The study finds that bacterial and eukaryotic community composition in the pitchers is most influenced by the host plant species and pH level. While collection site and pitcher volume also have significant effects, bacterial and eukaryotic diversity are strongly correlated, suggesting similar responses to environmental conditions rather than interactions between organisms shaping the communities. Deterministic factors like biochemical characteristics have a stronger influence on community assembly than stochastic factors like chance colonization.
Seminário 6 horner-devineetal 2003_bacteria (1)
This document reports on a study that examined the relationship between bacterial diversity and primary productivity in aquatic mesocosms designed to mimic small ponds. The key findings were:
1) Bacterial richness, as estimated by sequencing 16S rDNA from samples, varied along the gradient of primary productivity created by altering nutrient inputs in the mesocosms.
2) Different bacterial taxonomic groups (Cytophaga-Flavobacteria-Bacteroides, Alpha-proteobacteria, Beta-proteobacteria) exhibited different relationships between richness and productivity - hump shaped, U-shaped, and no relationship, respectively.
3) This is one of the first studies to demonstrate that bacterial diversity
Trends in Macrophyte Diversity in Anthropogenic Perturbed Lentic Ecosystems w...
Aquatic macrophytes hold several niches within the ecosystem, including inter alia water purification, carbon sequestration and serve as microhabitats for aquatic insects. These dynamic roles make macrophytes good indicators of current environmental conditions. Hence assessing their abundance in line with wetland ecosystem dynamics and function is essential. Frequency of occurrence and density values were estimated, using twenty (20) 2 m x 2 m quadrats for each macrophyte encountered. The results of the study revealed twenty-one (21) macrophytes belonging to 16 families. These ponds varied markedly in terms of species composition and in numerical strength such that Polygonum lanigerum (1143+175st/ha), Setaria verticillata (337.5+ 32.8st/ha), Azolla pinnata (337.7+ 16.4 st/ha) recorded high density values while Lagenaria breviflora (18.7±2.19), Sida acuta (18.75±5.30), Ludwigia erecta (18.7±0.15) and Milletia aboensis (18.7±0.03) were the least abundant species. Pond A and D with 11 taxa each had the higher Shannon-Wiener (2.192, 2.214) and Simpson (0.8699, 0.8787) diversity indices respectively when compared to the other ponds. On the contrary, pond C with four taxa had the least Shannon-Wiener and Simpson diversity indices (1.253, 0.6782) respectively. Equitability and evenness ranged between 0.914 - 0. 952 and 0.814 - 0.900 respectively. Bray and Curtis cluster analysis showed that pond B was the most dissimilar compared to other ponds in terms of the taxa composition.
Bacteriophage observations and evolution_Group1.pdf
The document summarizes a study on bacteriophages:
1) The study aimed to observe bacteriophages under microscopes, determine their distribution in different hosts, examine their behaviors, and discover their evolutionary roots.
2) Key results found unclear relationships between phages and microviruses due to incomplete data, and similarities in appearance, behavior, and ancestry between some viruses.
3) The study's implications are that the relationship between phages and microviruses remains unclear, requiring further research over time for more discoveries.
Bioinformatica 24-11-2011-t6-phylogenetics
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PENSOFT ARTICLE COLLECTION ABOUT MYANMAR
PENSOFT ARTICLE COLLECTION ABOUT MYANMAR
https://pensoft.net/about#Company-Profile
Pensoft is an independent academic publishing company, well known worldwide for its innovations in the field of semantic publishing and for its cutting-edge publishing tools and workflows. Founded in 1992 "by scientists, for the scientists" and initially focusing on book publishing, it has grown to become a leading publisher of innovative open access journals, such as: Research Ideas and Outcomes (RIO), ZooKeys, Biodiversity Data Journal, PhytoKeys, MycoKeys, Nature Conservation, NeoBiota, Comparative Cytogenetics, and others. Pensoft has published more than 1,000 books and over 4,000 open access articles, mostly in the field of natural history.
Pensoft is a member or partner of several professional publishing organisations and data publishing platforms, including CrossRef, OASPA, PubMedCentral, CLOCKSS, Research Data Alliance (RDA), OpenAIRE, LifeWatch, DataONE, Dryad Data Repository, Global Biodiversity Information Facility (GBIF), Encyclopedia of Life (EoL), and others.
https://zookeys.pensoft.net/article/24248/
A new remarkable species of Alloscorpiops Vachon, 1980 from Myanmar (Burma) (Scorpiones, Scorpiopidae)
https://zookeys.pensoft.net/article/24453/
Filling the BINs of life: Report of an amphibian and reptile survey of the Tanintharyi (Tenasserim) Region of Myanmar, with DNA barcode data
https://zookeys.pensoft.net/article/24198/
Taxonomic notes on Babinskaiidae from the Cretaceous Burmese amber, with the description of a new species (Insecta, Neuroptera)
https://zookeys.pensoft.net/article/22510/
Laubuka tenella, a new species of cyprinid fish from southeastern Bangladesh and southwestern Myanmar (Teleostei, Cyprinidae, Danioninae)
https://zookeys.pensoft.net/article/22310/
New genus and species of sisyrids (Insecta, Neuroptera) from the Late Cretaceous Myanmar amber
https://www.facebook.com/groups/799902210118950/permalink/1642543752521454/
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Non invasive high resolution
Non invasive high resolution in vivo imaging of alpha-naphthylisothiocyanate
(ANIT) induced hepatobiliary toxicity in STII medaka
Ron Hardman∗, Seth Kullman, Bonny Yuen, David E. Hinton
Duke University, Nicholas School of the Environment and Earth Sciences, Durham, NC 27708, United States
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Bacterial biofilms are communities of surface-associated microorganisms encased in a self-produced extracellular matrix. Biofilm formation is a nearly universal bacterial trait found on natural and artificial surfaces. The document discusses the complex structure of biofilms and the different environmental niches within biofilms that allow cells to experience different conditions. It also examines the stages of biofilm formation and dispersion, and how biofilms can lead to drug resistance and infectious diseases in humans.
Networks, people and animal biodiversity
Species richness, bird macroecology, landscape pathology, network epidemiology. Ants and people: a test of two mechanisms behind the large-scale human-biodiversity correlation for Formicidae in Europe. Aphid biodiversity is correlated with human population in European countries. Plant health and global change – some implications forlandscape management
10.1007@978-981-13-8315-1.pdf
This document provides information about a book titled "Microbial Diversity in Ecosystem Sustainability and Biotechnological Applications". It is edited by Tulasi Satyanarayana, Bhavdish Narain Johri, and Subrata Kumar Das. The book contains 19 chapters contributed by various authors and is divided into two volumes - the first covers microbial diversity in normal and extreme environments, while the second focuses on soil and agro-ecosystems. The preface provides background on microbial diversity and its importance. It notes that current understanding of microbial diversity is still limited and more research is needed using both culture-dependent and -independent methods like metagenomics.
the others our biased perspective
Understanding the origin and evolution of the eukaryotic cell and the full diversity of eukaryotes is relevant to many biological disciplines.
However, our current understanding of eukaryotic genomes is extremely biased, leading to a skewed view of eukaryotic biology.
We argue that a phylogeny-driven initiative to cover the full eukaryotic diversity is needed to overcome this bias.
•
◦There is an important bias in eukaryotic knowledge, affecting cultures and genomes.
Eukaryotic genomics are biased towards multicellular organisms and their parasites.
◦A phylogeny-driven initiative is needed to overcome the eukaryotic genomic bias.
◦We propose to sequence neglected cultures and increase culturing efforts.
◦Single-cell genomics should be embraced as a tool to explore eukaryotic diversity
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Rapid Impact Assessment of Climatic and Physio-graphic Changes on Flagship G...
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Bacterial associations with the hydromedusa Nemopsis bachei and scyphomedusa ...
Bacterial associations with the hydromedusa Nemopsis bachei and scyphomedusa ...
Bacterial associations with the hydromedusa Nemopsis bachei and scyphomedusa ...
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Do pitcher plants control the assembly of pitcher microbiomes?
Do pitcher plants control the assembly of pitcher microbiomes?
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This document discusses efforts to develop a natural classification system for diatoms that is supported by DNA evidence and reflects their evolutionary relationships. It provides background on diatoms, including their diversity and unique silica cell structure. Previous classification systems grouped diatoms into non-evolutionary relationships, but new analyses using DNA data aim to establish monophyletic groups that accurately capture diatom phylogeny. The document proposes a new higher-level classification of diatoms into consistently resolved, DNA-supported clades.
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This document summarizes the findings of a study that used genetic metabarcoding of the V9 region of the 18S rRNA gene to characterize eukaryotic plankton communities across different ocean basins and size fractions. Some key findings include:
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Something general on Eukaryotic Taxonomy
This document discusses issues with eukaryotic taxonomy and species classification, particularly for protists. It notes that biological classification is hierarchical, with species as the base rank, and that classifications aim to reflect evolutionary relationships but tensions exist between correctness and stability. For protists, traditional species concepts based on morphology are problematic as type material is often lacking and species boundaries vary widely. Molecular data is increasingly revealing many "cryptic" species within formerly described broad species.
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This document discusses the phylum Ciliophora, which includes single-celled protozoa with hair-like projections called cilia. It summarizes the current classification of Ciliophora into two main subphyla and eleven classes based on morphology and molecular phylogeny. Recent phylogenetic studies by the authors suggest two new proposed classes, Linconophoriea and Protocruziea, and one new subphyla, Mesodiniea. The document contains figures illustrating the phylogenetic relationships and evolutionary history of ciliated protozoa.
Aquatic protist communities in the midst of environmental change:
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2) Milne Fiord Epishelf Lake in the Canadian Arctic, dominated by the green algae Carteria, is a unique high latitude system threatened with extinction as the unstable ice shelf holding back its waters breaks up.
3) Monitoring of the protist community in the northern Canada Basin from 2005-2014 shows that diversity was exceptionally low in 2012 when sea ice retreat passed 80°N, the aim is to determine which taxa are driving this change.
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3) Resolving the evolutionary relationships among some orders, like those in the lineage Nemaliophycidae, remains challenging despite molecular studies.
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Classification
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Masking and demasking reagents
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2.Back Titration
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Complex titration with EDTA.
在线办理(salfor毕业证书)索尔福德大学毕业证毕业完成信一模一样
学校原件一模一样【微信：741003700 】《(salfor毕业证书)索尔福德大学毕业证》【微信：741003700 】学位证，留信认证（真实可查，永久存档）原件一模一样纸张工艺/offer、雅思、外壳等材料/诚信可靠,可直接看成品样本，帮您解决无法毕业带来的各种难题！外壳，原版制作，诚信可靠，可直接看成品样本。行业标杆！精益求精，诚心合作，真诚制作！多年品质 ,按需精细制作，24小时接单,全套进口原装设备。十五年致力于帮助留学生解决难题，包您满意。
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The technology uses reclaimed CO₂ as the dyeing medium in a closed loop process. When pressurized, CO₂ becomes supercritical (SC-CO₂). In this state CO₂ has a very high solvent power, allowing the dye to dissolve easily.
Randomised Optimisation Algorithms in DAPHNE
Slides from talk:
Aleš Zamuda: Randomised Optimisation Algorithms in DAPHNE .
Austrian-Slovenian HPC Meeting 2024 – ASHPC24, Seeblickhotel Grundlsee in Austria, 10–13 June 2024
https://ashpc.eu/
Thornton ESPP slides UK WW Network 4_6_24.pdf
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The Petroleum System of the Çukurova Field - the Shallowest Oil Discovery of Türkiye, Adana
Equivariant neural networks and representation theory
Or: Beyond linear.
Abstract: Equivariant neural networks are neural networks that incorporate symmetries. The nonlinear activation functions in these networks result in interesting nonlinear equivariant maps between simple representations, and motivate the key player of this talk: piecewise linear representation theory.
Disclaimer: No one is perfect, so please mind that there might be mistakes and typos.
dtubbenhauer@gmail.com
Corrected slides: dtubbenhauer.com/talks.html
Micronuclei test.M.sc.zoology.fisheries.
Current Ms word generated power point presentation covers major details about the micronuclei test. It's significance and assays to conduct it. It is used to detect the micronuclei formation inside the cells of nearly every multicellular organism. It's formation takes place during chromosomal sepration at metaphase.
ESR spectroscopy in liquid food and beverages.pptx
With increasing population, people need to rely on packaged food stuffs. Packaging of food materials requires the preservation of food. There are various methods for the treatment of food to preserve them and irradiation treatment of food is one of them. It is the most common and the most harmless method for the food preservation as it does not alter the necessary micronutrients of food materials. Although irradiated food doesn’t cause any harm to the human health but still the quality assessment of food is required to provide consumers with necessary information about the food. ESR spectroscopy is the most sophisticated way to investigate the quality of the food and the free radicals induced during the processing of the food. ESR spin trapping technique is useful for the detection of highly unstable radicals in the food. The antioxidant capability of liquid food and beverages in mainly performed by spin trapping technique.
Immersive Learning That Works: Research Grounding and Paths Forward
We will metaverse into the essence of immersive learning, into its three dimensions and conceptual models. This approach encompasses elements from teaching methodologies to social involvement, through organizational concerns and technologies. Challenging the perception of learning as knowledge transfer, we introduce a 'Uses, Practices & Strategies' model operationalized by the 'Immersive Learning Brain' and ‘Immersion Cube’ frameworks. This approach offers a comprehensive guide through the intricacies of immersive educational experiences and spotlighting research frontiers, along the immersion dimensions of system, narrative, and agency. Our discourse extends to stakeholders beyond the academic sphere, addressing the interests of technologists, instructional designers, and policymakers. We span various contexts, from formal education to organizational transformation to the new horizon of an AI-pervasive society. This keynote aims to unite the iLRN community in a collaborative journey towards a future where immersive learning research and practice coalesce, paving the way for innovative educational research and practice landscapes.
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In this presentation include the prototype drug SAR on thus or with their examples .
Syllabus of Second Year B. Pharmacy
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- 1. Cédric Berney - Recent Contributions to the Eukaryote Tree of Life present address: Protist Evolution & Pelagic Ecosystems (Dr Colomban de Vargas), UMR 7144, CNRS/UPMC, Station Biologique, Roscoff, France former affiliation: Genomics and Microbial Diversity (Dr David Bass), Life Sciences, The Natural History Museum, London, UK Large, branching and/or network-forming heterotrophic naked amoebae are common in soils and in freshwater & marine sediments, and are suspected to play important roles in microbial ecosystems. Such amoebae evolved convergently in many eukaryotic groups (mostly Amoebozoa and Rhizaria) and are often closely related to major parasite groups of economic importance. Yet they remain very poorly understood. For the majority of described species, molecular data are still missing, and few lineages have been studied morphologically or ecologically. As part of NERC-funded projects, David Bass and I explored the molecular, ecological, and morphological diversity of these amoebae, including Vampyrellida (top left box) and Variosea (top right box). Using lineage-specific 18S primers, we explored hidden diversity within Ascetosporean parasites (bottom left box). We also investigated rhizarian lineages known only from environmental data and could characterise some of them morphologically. We used a combined 18S-28S dataset to resolve deep relationships within Rhizaria (bottom right box). Vampires in the oceans: predatory cercozoan amoebae in marine habitats Expansion of the 'reticulosphere': diversity of novel branching and network- forming amoebae helps to define Variosea (Amoebozoa) A combined 18S-28S rDNA dataset to elucidate higher-level relationships within Rhizaria, with focus on Endomyxa Cédric Berney, Sarah Romac, Frédéric Mahé, Sébastien Santini, Raffaele Siano, & David Bass. 2013. ISME J 7: 2387-2399 Cédric Berney, Stefan Geisen, Jeroen Van Wichelen, Frank Nitsche, Pieter Vanormelingen, Michael Bonkowski, & David Bass. 2015. Protist 166: 271-295 Cédric Berney, Rachel Foster, Georgia Ward, Akinori Yabuki, Takashi Shiratori, Roberto Sierra, Jan Pawlowski, & David Bass. in preparation Mikrocytids are a broadly distributed and divergent radiation of parasites in aquatic invertebrates Hanna Hartikainen, Oliver Ashford, Cédric Berney, Beth Okamura, Stephen Feist, Craig Baker-Austin, Grant Stentiford, & David Bass. 2014. ISME J 8: 177-186 Lineage-specific molecular probing reveals novel diversity and ecological partitioning of Haplosporidians Hanna Hartikainen, Grant Stentiford, Kelly Bateman, Cédric Berney, Stephen Feist, Matt Longshaw, Beth Okamura, David Stone, Georgia Ward, Charlotte Wood, & David Bass. 2014. Current Biology 24: 807-812 Arachnula sp. from Wales Thalassomyxa sp. from Majorca Darbyshirella terrestris, n. gen., n. sp Dictyamoeba vorax, n. gen., n. sp. Arboramoeba reticulata, n. gen., n. sp. RETARIA Foraminifera + Radiolaria Penardia sp. from North Carolina "ZOORHIZA" Filoreta + Gromia + Ascetosporea + env. lineages Endo4, Endo5, Endo6 (identified as a flagellate) "EORHIZA" Tremula + env. novel clade 12 + env. novel clade 10 (identified as exclusively FW/soil flagellates) "PHYTORHIZA" Vampyrellids + Phytomyxea + env. novel clade 9 (identified as parasites of diatoms and brown algae) emended FILOSA / CERCOZOA chlorarachniophytes, cercomonads, euglyphids, etc. environmental novel clade 9 parasites of diatoms and brown algae environmental lineage Endo6 (ENDOMYXA)