Florida Red Tide Mitigation and Technology Development Initiative
Total Page:16
File Type:pdf, Size:1020Kb
Load more
Recommended publications
-
Dinos, Toxins and Fears, Oh My!
Dinos, Toxins and Fears, Oh My! (a new algae adventure… we’re not in Delaware anymore) The Cast of Characters: UD Citizen Monitoring Program- Ed Whereat, Muns Farestad Graham Purchase, Capt. Dick Peoples and the “Spectacle” AG Robbins, and other volunteers. DNREC- Jack Pingree, Glenn King Jr., and DNREC’s HAB Monitoring Program UNCW- Dr, Carmelo Tomas FWRI-Leanne Flewelling and Jennifer Wolny Also, thanks to Bill Winkler Sr., and Dave Munchel (deceased) CIB STAC Nov 16, 2007 “Red Tide” Most “red tides” are caused by dinoflagellates which have a variety of pigments ranging from yellow-red-brown in addition to the green of Chlorophyll, so blooms of some dinoflagellates actually appear as red water. The dinoflagellate, Karenia brevis, is commonly called the “Florida red tide” even though blooms are usually yellow-green. The toxicity of K. brevis is well- documented. Blooms are associated with massive fish kills, shellfish toxicity, marine mammal deaths, and human respiratory irritation if exposed to salt-spray aerosols. There are several newly described species of Karenia, one being K. papilionacea, formerly known as K. brevis “butterfly-type”. Karenia papilionacea, K. brevis, and a few others are commonly found in the Gulf of Mexico, but these and yet other Karenia species are also found throughout the world. This summer, K. papilionacea and K. brevis were detected in Delaware waters. The potential for toxicity in K. papilionacea is low, but less is known about the newly described species. Blooms of K. brevis have migrated to the Atlantic by entrainment in Gulf Stream waters. Occasional blooms have been seen along the Atlantic coast of Florida since 1972. -
Molecular Data and the Evolutionary History of Dinoflagellates by Juan Fernando Saldarriaga Echavarria Diplom, Ruprecht-Karls-Un
Molecular data and the evolutionary history of dinoflagellates by Juan Fernando Saldarriaga Echavarria Diplom, Ruprecht-Karls-Universitat Heidelberg, 1993 A THESIS SUBMITTED IN PARTIAL FULFILMENT OF THE REQUIREMENTS FOR THE DEGREE OF DOCTOR OF PHILOSOPHY in THE FACULTY OF GRADUATE STUDIES Department of Botany We accept this thesis as conforming to the required standard THE UNIVERSITY OF BRITISH COLUMBIA November 2003 © Juan Fernando Saldarriaga Echavarria, 2003 ABSTRACT New sequences of ribosomal and protein genes were combined with available morphological and paleontological data to produce a phylogenetic framework for dinoflagellates. The evolutionary history of some of the major morphological features of the group was then investigated in the light of that framework. Phylogenetic trees of dinoflagellates based on the small subunit ribosomal RNA gene (SSU) are generally poorly resolved but include many well- supported clades, and while combined analyses of SSU and LSU (large subunit ribosomal RNA) improve the support for several nodes, they are still generally unsatisfactory. Protein-gene based trees lack the degree of species representation necessary for meaningful in-group phylogenetic analyses, but do provide important insights to the phylogenetic position of dinoflagellates as a whole and on the identity of their close relatives. Molecular data agree with paleontology in suggesting an early evolutionary radiation of the group, but whereas paleontological data include only taxa with fossilizable cysts, the new data examined here establish that this radiation event included all dinokaryotic lineages, including athecate forms. Plastids were lost and replaced many times in dinoflagellates, a situation entirely unique for this group. Histones could well have been lost earlier in the lineage than previously assumed. -
Influence of Environmental Parameters on Karenia Selliformis Toxin Content in Culture
Cah. Biol. Mar. (2009) 50 : 333-342 Influence of environmental parameters on Karenia selliformis toxin content in culture Amel MEDHIOUB1, Walid MEDHIOUB3,2, Zouher AMZIL2, Manoella SIBAT2, Michèle BARDOUIL2, Idriss BEN NEILA3, Salah MEZGHANI3, Asma HAMZA1 and Patrick LASSUS2 (1) INSTM, Institut National des Sciences et Technologies de la Mer. Laboratoire d'Aquaculture, 28, rue 2 Mars 1934, 2025 Salammbo, Tunisie. E-mail: [email protected] (2) IFREMER, Département Environnement, Microbiologie et Phycotoxines, BP 21105, 44311 Nantes, France. (3) IRVT, Institut de la Recherche Vétérinaire de Tunisie, centre régional de Sfax. Route de l'aéroport, km 1, 3003 Sfax, Tunisie Abstract: Karenia selliformis strain GM94GAB was isolated in 1994 from the north of Sfax, Gabès gulf, Tunisia. This species, which produces gymnodimine (GYM) a cyclic imine, has since been responsible for chronic contamination of Tunisian clams. A study was made by culturing the microalgae on enriched Guillard f/2 medium. The influence of growing conditions on toxin content was studied, examining the effects of (i) different culture volumes (0.25 to 40 litre flasks), (ii) two temperature ranges (17-15°C et 20-21°C) and (iii) two salinities (36 and 44). Chemical analyses were made by mass spectrometry coupled with liquid chromatography (LC-MS/MS). Results showed that (i) the highest growth rate (0.34 ± 0.14 div d-1) was obtained at 20°C and a salinity of 36, (ii) GYM content expressed as pg eq GYM cell-1 increased with culture time. The neurotoxicity of K. selliformis extracts was confirmed by mouse bioassay. This study allowed us to cal- culate the minimal lethal dose (MLD) of gymnodimine (GYM) that kills a mouse, as a function of the number of K. -
The Florida Red Tide Dinoflagellate Karenia Brevis
G Model HARALG-488; No of Pages 11 Harmful Algae xxx (2009) xxx–xxx Contents lists available at ScienceDirect Harmful Algae journal homepage: www.elsevier.com/locate/hal Review The Florida red tide dinoflagellate Karenia brevis: New insights into cellular and molecular processes underlying bloom dynamics Frances M. Van Dolah a,*, Kristy B. Lidie a, Emily A. Monroe a, Debashish Bhattacharya b, Lisa Campbell c, Gregory J. Doucette a, Daniel Kamykowski d a Marine Biotoxins Program, NOAA Center for Coastal Environmental Health and Biomolecular Resarch, Charleston, SC, United States b Department of Biological Sciences and Roy J. Carver Center for Comparative Genomics, University of Iowa, Iowa City, IA, United States c Department of Oceanography, Texas A&M University, College Station, TX, United States d Department of Marine, Earth and Atmospheric Sciences, North Carolina State University, Raleigh, NC, United States ARTICLE INFO ABSTRACT Article history: The dinoflagellate Karenia brevis is responsible for nearly annual red tides in the Gulf of Mexico that Available online xxx cause extensive marine mortalities and human illness due to the production of brevetoxins. Although the mechanisms regulating its bloom dynamics and toxicity have received considerable attention, Keywords: investigation into these processes at the cellular and molecular level has only begun in earnest during Bacterial–algal interactions the past decade. This review provides an overview of the recent advances in our understanding of the Cell cycle cellular and molecular biology on K. brevis. Several molecular resources developed for K. brevis, including Dinoflagellate cDNA and genomic DNA libraries, DNA microarrays, metagenomic libraries, and probes for population Florida red tide genetics, have revolutionized our ability to investigate fundamental questions about K. -
Assessing the Potential for Range Expansion of the Red Tide Algae Karenia Brevis
Nova Southeastern University NSUWorks All HCAS Student Capstones, Theses, and Dissertations HCAS Student Theses and Dissertations 8-7-2020 Assessing the Potential for Range Expansion of the Red Tide Algae Karenia brevis Edward W. Young Follow this and additional works at: https://nsuworks.nova.edu/hcas_etd_all Part of the Marine Biology Commons Share Feedback About This Item NSUWorks Citation Edward W. Young. 2020. Assessing the Potential for Range Expansion of the Red Tide Algae Karenia brevis. Capstone. Nova Southeastern University. Retrieved from NSUWorks, . (13) https://nsuworks.nova.edu/hcas_etd_all/13. This Capstone is brought to you by the HCAS Student Theses and Dissertations at NSUWorks. It has been accepted for inclusion in All HCAS Student Capstones, Theses, and Dissertations by an authorized administrator of NSUWorks. For more information, please contact [email protected]. Capstone of Edward W. Young Submitted in Partial Fulfillment of the Requirements for the Degree of Master of Science Marine Science Nova Southeastern University Halmos College of Arts and Sciences August 2020 Approved: Capstone Committee Major Professor: D. Abigail Renegar, Ph.D. Committee Member: Robert Smith, Ph.D. This capstone is available at NSUWorks: https://nsuworks.nova.edu/hcas_etd_all/13 Nova Southeastern Univeristy Halmos College of Arts and Sciences Assessing the Potential for Range Expansion of the Red Tide Algae Karenia brevis By Edward William Young Submitted to the Faculty of Halmos College of Arts and Sciences in partial fulfillment of the requirements for the degree of Masters of Science with a specialty in: Marine Biology Nova Southeastern University September 8th, 2020 1 Table of Contents 1. -
Drivers and Effects of Karenia Mikimotoi Blooms in the Western English Channel ⇑ Morvan K
Progress in Oceanography 137 (2015) 456–469 Contents lists available at ScienceDirect Progress in Oceanography journal homepage: www.elsevier.com/locate/pocean Drivers and effects of Karenia mikimotoi blooms in the western English Channel ⇑ Morvan K. Barnes a,1, Gavin H. Tilstone a, , Timothy J. Smyth a, Claire E. Widdicombe a, Johanna Gloël a,b, Carol Robinson b, Jan Kaiser b, David J. Suggett c a Plymouth Marine Laboratory, Prospect Place, West Hoe, Plymouth PL1 3DH, UK b Centre for Ocean and Atmospheric Sciences, School of Environmental Sciences, University of East Anglia, Norwich Research Park, Norwich NR4 7TJ, UK c Functional Plant Biology & Climate Change Cluster, University of Technology Sydney, PO Box 123, Broadway, NSW 2007, Australia article info abstract Article history: Naturally occurring red tides and harmful algal blooms (HABs) are of increasing importance in the coastal Available online 9 May 2015 environment and can have dramatic effects on coastal benthic and epipelagic communities worldwide. Such blooms are often unpredictable, irregular or of short duration, and thus determining the underlying driving factors is problematic. The dinoflagellate Karenia mikimotoi is an HAB, commonly found in the western English Channel and thought to be responsible for occasional mass finfish and benthic mortali- ties. We analysed a 19-year coastal time series of phytoplankton biomass to examine the seasonality and interannual variability of K. mikimotoi in the western English Channel and determine both the primary environmental drivers of these blooms as well as the effects on phytoplankton productivity and oxygen conditions. We observed high variability in timing and magnitude of K. mikimotoi blooms, with abun- dances reaching >1000 cells mLÀ1 at 10 m depth, inducing up to a 12-fold increase in the phytoplankton carbon content of the water column. -
Morphological Studies of the Dinoflagellate Karenia Papilionacea in Culture
MORPHOLOGICAL STUDIES OF THE DINOFLAGELLATE KARENIA PAPILIONACEA IN CULTURE Michelle R. Stuart A Thesis Submitted to the University of North Carolina Wilmington in Partial Fulfillment of the Requirements for the Degree of Master of Science Department of Biology and Marine Biology University of North Carolina Wilmington 2011 Approved by Advisory Committee Alison R. Taylor Richard M. Dillaman Carmelo R. Tomas Chair Accepted by __________________________ Dean, Graduate School This thesis has been prepared in the style and format consistent with the journal Journal of Phycology ii TABLE OF CONTENTS ABSTRACT ................................................................................................................................... iv ACKNOWLEDGMENTS .............................................................................................................. v DEDICATION ............................................................................................................................... vi LIST OF TABLES ........................................................................................................................ vii LIST OF FIGURES ..................................................................................................................... viii INTRODUCTION .......................................................................................................................... 1 MATERIALS AND METHODS .................................................................................................... 5 RESULTS -
Karenia Brevis: Adverse Impacts on Human Health and Larger Marine Related Animal Mortality from Red Tides
Karenia brevis: Adverse Impacts on Human Health and Larger Marine Related Animal Mortality from Red Tides Vickie Vang Environmental Studies 190 12/14/2018 TABLE OF CONTENTS ABSTRACT ............................................................................................................................................................ 2 INTRODUCTION .................................................................................................................................................. 3 BIOLOGY ..................................................................................................................................................................................... 4 Genus Karenia .................................................................................................................................................................................. 4 Vertical Migratory .......................................................................................................................................................................... 5 Temperature and Salinity ......................................................................................................................................................... 6 Nourishment .................................................................................................................................................................................... 7 Brevotoxin ........................................................................................................................................................................................ -
Toxicity and Nutritional Inadequacy of Karenia Brevis: Synergistic Mechanisms Disrupt Top-Down Grazer Control
Vol. 444: 15–30, 2012 MARINE ECOLOGY PROGRESS SERIES Published January 10 doi: 10.3354/meps09401 Mar Ecol Prog Ser OPEN ACCESS Toxicity and nutritional inadequacy of Karenia brevis: synergistic mechanisms disrupt top-down grazer control Rebecca J. Waggett1,2,*, D. Ransom Hardison1, Patricia A. Tester1 1National Ocean Service, National Oceanic and Atmospheric Administration, 101 Pivers Island Road, Beaufort, North Carolina 28516-9722, USA 2Present address: The University of Tampa, 401 W. Kennedy Blvd., Tampa, Florida 33606, USA ABSTRACT: Zooplankton grazers are capable of influencing food-web dynamics by exerting top- down control over phytoplankton prey populations. Certain toxic or unpalatable algal species have evolved mechanisms to disrupt grazer control, thereby facilitating the formation of massive, monospecific blooms. The harmful algal bloom (HAB)-forming dinoflagellate Karenia brevis has been associated with lethal and sublethal effects on zooplankton that may offer both direct and indirect support of bloom formation and maintenance. Reductions in copepod grazing on K. brevis have been attributed to acute physiological incapacitation and nutritional inadequacy. To evalu- ate the potential toxicity or nutritional inadequacy of K. brevis, food removal and egg production experiments were conducted using the copepod Acartia tonsa and K. brevis strains CCMP 2228, Wilson, and SP-1, characterized using liquid chromatography-mass spectrometry (LC-MS) as hav- ing high, low, and no brevetoxin levels, respectively. Variable grazing rates were found in exper- iments involving mixtures of toxic CCMP 2228 and Wilson strains. However, in experiments with toxic CCMP 2228 and non-toxic SP-1 strains, A. tonsa grazed SP-1 at significantly higher rates than the toxic alternative. -
Gulf of Mexico HAB Primer
2 WHAT IS A HARMFUL ALGAL BLOOM (HAB)? Algae support healthy ecosystems by forming the base of the food web and producing oxygen. However, some algal species can harm humans, other animals, TaBLE OF CONTENTS and the environment when they “bloom.” Unlike land plants that create flowers in What is a Harmful Algal Bloom (HAB)?...........................................2 bloom, algae bloom by reproducing or What Causes HABs? .......................................................................2 accumulating far beyond their normal levels. Harmful algal blooms (HABs) damage the Physical and Chemical Factors........................................................2 environment because they replace vital food Biological Factors ............................................................................2 sources, clog fish gills, shade seagrass, or Human Factors ................................................................................3 contribute to low oxygen “dead-zones” How do HABs affect us and Gulf of Mexico ecosystems? .............3 when they degrade. Some HAB species produce potent chemicals called toxins What are the prevalent HAB species in the Gulf of Mexico? .........4 that can persist in the water and enter the Where do HABs occur in the Gulf of Mexico?................................6 food chain. These toxins can be harmful to How are HABs detected and managed for human health? ...........6 human and animal health. Identification of HAB species ..........................................................9 HAB outbreaks in -
Single Cell Transcriptomics, Mega-Phylogeny and the Genetic Basis Of
bioRxiv preprint doi: https://doi.org/10.1101/064030; this version posted July 15, 2016. 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 4.0 International license. 1 Single cell transcriptomics, mega-phylogeny and the genetic basis of 2 morphological innovations in Rhizaria 3 4 Anders K. Krabberød1, Russell J. S. Orr1, Jon Bråte1, Tom Kristensen1, Kjell R. Bjørklund2 & Kamran 5 ShalChian-Tabrizi1* 6 7 1Department of BiosCienCes, Centre for Integrative MiCrobial Evolution and Centre for EpigenetiCs, 8 Development and Evolution, University of Oslo, Norway 9 2Natural History Museum, Department of ResearCh and ColleCtions University of Oslo, Norway 10 11 *Corresponding author: 12 Kamran ShalChian-Tabrizi 13 [email protected] 14 Mobile: + 47 41045328 15 16 17 Keywords: Cytoskeleton, phylogeny, protists, Radiolaria, Rhizaria, SAR, single-cell, transCriptomiCs 1 bioRxiv preprint doi: https://doi.org/10.1101/064030; this version posted July 15, 2016. 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 4.0 International license. 18 Abstract 19 The innovation of the eukaryote Cytoskeleton enabled phagoCytosis, intracellular transport and 20 Cytokinesis, and is responsible for diverse eukaryotiC morphologies. Still, the relationship between 21 phenotypiC innovations in the Cytoskeleton and their underlying genotype is poorly understood. 22 To explore the genetiC meChanism of morphologiCal evolution of the eukaryotiC Cytoskeleton we 23 provide the first single Cell transCriptomes from unCultivable, free-living uniCellular eukaryotes: the 24 radiolarian speCies Lithomelissa setosa and Sticholonche zanclea. -
Review of Harmful Algal Blooms in the Coastal Mediterranean Sea, with a Focus on Greek Waters
diversity Review Review of Harmful Algal Blooms in the Coastal Mediterranean Sea, with a Focus on Greek Waters Christina Tsikoti 1 and Savvas Genitsaris 2,* 1 School of Humanities, Social Sciences and Economics, International Hellenic University, 57001 Thermi, Greece; [email protected] 2 Section of Ecology and Taxonomy, School of Biology, Zografou Campus, National and Kapodistrian University of Athens, 16784 Athens, Greece * Correspondence: [email protected]; Tel.: +30-210-7274249 Abstract: Anthropogenic marine eutrophication has been recognized as one of the major threats to aquatic ecosystem health. In recent years, eutrophication phenomena, prompted by global warming and population increase, have stimulated the proliferation of potentially harmful algal taxa resulting in the prevalence of frequent and intense harmful algal blooms (HABs) in coastal areas. Numerous coastal areas of the Mediterranean Sea (MS) are under environmental pressures arising from human activities that are driving ecosystem degradation and resulting in the increase of the supply of nutrient inputs. In this review, we aim to present the recent situation regarding the appearance of HABs in Mediterranean coastal areas linked to anthropogenic eutrophication, to highlight the features and particularities of the MS, and to summarize the harmful phytoplankton outbreaks along the length of coastal areas of many localities. Furthermore, we focus on HABs documented in Greek coastal areas according to the causative algal species, the period of occurrence, and the induced damage in human and ecosystem health. The occurrence of eutrophication-induced HAB incidents during the past two decades is emphasized. Citation: Tsikoti, C.; Genitsaris, S. Review of Harmful Algal Blooms in Keywords: HABs; Mediterranean Sea; eutrophication; coastal; phytoplankton; toxin; ecosystem the Coastal Mediterranean Sea, with a health; disruptive blooms Focus on Greek Waters.