Phytoplankton Dynamics and Bio-Optical Variables Associated with Harmful Algal Blooms in Aquaculture Zones
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Microorganisms
microorganisms Review The Genetic Basis of Toxin Biosynthesis in Dinoflagellates Arjun Verma 1,* , Abanti Barua 1,2, Rendy Ruvindy 1, Henna Savela 3, Penelope A. Ajani 1 and Shauna A. Murray 1 1 Climate Change Cluster, University of Technology Sydney, Sydney 2007, Australia 2 Department of Microbiology, Noakhali Science and Technology University, Chittagong 3814, Bangladesh 3 Finnish Environment Institute, Marine Research Centre, 00790 Helsinki, Finland * Correspondence: [email protected] Received: 22 June 2019; Accepted: 27 July 2019; Published: 29 July 2019 Abstract: In marine ecosystems, dinoflagellates can become highly abundant and even dominant at times, despite their comparatively slow growth rates. One factor that may play a role in their ecological success is the production of complex secondary metabolite compounds that can have anti-predator, allelopathic, or other toxic effects on marine organisms, and also cause seafood poisoning in humans. Our knowledge about the genes involved in toxin biosynthesis in dinoflagellates is currently limited due to the complex genomic features of these organisms. Most recently, the sequencing of dinoflagellate transcriptomes has provided us with valuable insights into the biosynthesis of polyketide and alkaloid-based toxin molecules in dinoflagellate species. This review synthesizes the recent progress that has been made in understanding the evolution, biosynthetic pathways, and gene regulation in dinoflagellates with the aid of transcriptomic and other molecular genetic tools, and provides a pathway for future studies of dinoflagellates in this exciting omics era. Keywords: dinoflagellates; toxins; transcriptomics; polyketides; alkaloids 1. Introduction Marine microbial eukaryotes are a diverse group of organisms comprising lineages that differ widely in their evolutionary histories, ecological niches, growth requirements, and nutritional strategies [1–5]. -
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. -
Growth, Behaviour and Cell Toxin Quota of Dinophysis Acuta During a Daily Cycle
Vol. 353: 89–105, 2008 MARINE ECOLOGY PROGRESS SERIES Published January 17 doi: 10.3354/meps07179 Mar Ecol Prog Ser Growth, behaviour and cell toxin quota of Dinophysis acuta during a daily cycle G. Pizarro1, 3,*, L. Escalera1, S. González-Gil1, J. M. Franco2, B. Reguera1 1Instituto Español de Oceanografía, Centro Oceanográfico de Vigo, Aptdo. 1552, 36280 Vigo, Spain 2Instituto de Investigaciones Marinas (CSIC), Eduardo Cabello 6, 36080 Vigo, Spain 3Present address: Instituto de Fomento Pesquero-CEQUA, Enrique Abello 0552, Casilla 101, Punta Arenas, Chile ABSTRACT: In 2005, a bloom of the Diarrhoetic Shellfish Poisoning (DSP) causative agent Dino- physis acuta Ehrenberg in the Galician Rías Baixas (NW Spain) started in early August and reached maximum densities (up to 2 × 104 cell l–1) in mid November. A cell cycle study was carried out over a 22 h period on 9 and 10 November to describe the physiological status and the short-term variability in cell toxin quota of D. acuta at the time of the annual maximum of lipophilic toxins in shellfish. At that time, the population of D. acuta showed an extremely low division rate (μ = 0.03 d–1), a high frequency of dead cells (up to 15%) and cells with starch granules (up to 93%), and no evidence of recent mixotrophic behaviour. Still, the cells, which did not perform vertical migration, aggregated around salinity-driven density discontinuities in the top 5 m and had a high cell toxin quota (deter- mined by liquid chromatography-mass spectrometry) for this species. A 3.5-fold difference was found between maximum (during the night) and minimum values of cell toxin quota. -
Ultrastructure and Molecular Phylogenetic Position of a New Marine Sand-Dwelling Dinoflagellate from British Columbia, Canada: Pseudadenoides Polypyrenoides Sp
European Journal of Phycology ISSN: 0967-0262 (Print) 1469-4433 (Online) Journal homepage: http://www.tandfonline.com/loi/tejp20 Ultrastructure and molecular phylogenetic position of a new marine sand-dwelling dinoflagellate from British Columbia, Canada: Pseudadenoides polypyrenoides sp. nov. (Dinophyceae) Mona Hoppenrath, Naoji Yubuki, Rowena Stern & Brian S. Leander To cite this article: Mona Hoppenrath, Naoji Yubuki, Rowena Stern & Brian S. Leander (2017) Ultrastructure and molecular phylogenetic position of a new marine sand-dwelling dinoflagellate from British Columbia, Canada: Pseudadenoides polypyrenoides sp. nov. (Dinophyceae), European Journal of Phycology, 52:2, 208-224, DOI: 10.1080/09670262.2016.1274788 To link to this article: http://dx.doi.org/10.1080/09670262.2016.1274788 View supplementary material Published online: 03 Mar 2017. Submit your article to this journal Article views: 25 View related articles View Crossmark data Full Terms & Conditions of access and use can be found at http://www.tandfonline.com/action/journalInformation?journalCode=tejp20 Download by: [The University of British Columbia] Date: 13 April 2017, At: 11:37 EUROPEAN JOURNAL OF PHYCOLOGY, 2017 VOL. 52, NO. 2, 208–224 http://dx.doi.org/10.1080/09670262.2016.1274788 Ultrastructure and molecular phylogenetic position of a new marine sand-dwelling dinoflagellate from British Columbia, Canada: Pseudadenoides polypyrenoides sp. nov. (Dinophyceae) Mona Hoppenratha,b, Naoji Yubukia,c, Rowena Sterna,d and Brian S. Leandera aDepartments of Botany and Zoology, -
The Planktonic Protist Interactome: Where Do We Stand After a Century of Research?
bioRxiv preprint doi: https://doi.org/10.1101/587352; this version posted May 2, 2019. The copyright holder for this preprint (which was not certified by peer review) is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under aCC-BY-NC-ND 4.0 International license. Bjorbækmo et al., 23.03.2019 – preprint copy - BioRxiv The planktonic protist interactome: where do we stand after a century of research? Marit F. Markussen Bjorbækmo1*, Andreas Evenstad1* and Line Lieblein Røsæg1*, Anders K. Krabberød1**, and Ramiro Logares2,1** 1 University of Oslo, Department of Biosciences, Section for Genetics and Evolutionary Biology (Evogene), Blindernv. 31, N- 0316 Oslo, Norway 2 Institut de Ciències del Mar (CSIC), Passeig Marítim de la Barceloneta, 37-49, ES-08003, Barcelona, Catalonia, Spain * The three authors contributed equally ** Corresponding authors: Ramiro Logares: Institute of Marine Sciences (ICM-CSIC), Passeig Marítim de la Barceloneta 37-49, 08003, Barcelona, Catalonia, Spain. Phone: 34-93-2309500; Fax: 34-93-2309555. [email protected] Anders K. Krabberød: University of Oslo, Department of Biosciences, Section for Genetics and Evolutionary Biology (Evogene), Blindernv. 31, N-0316 Oslo, Norway. Phone +47 22845986, Fax: +47 22854726. [email protected] Abstract Microbial interactions are crucial for Earth ecosystem function, yet our knowledge about them is limited and has so far mainly existed as scattered records. Here, we have surveyed the literature involving planktonic protist interactions and gathered the information in a manually curated Protist Interaction DAtabase (PIDA). In total, we have registered ~2,500 ecological interactions from ~500 publications, spanning the last 150 years. -
El Territorio Que Configura La DO Montsant Resta Delimitado Por Un
DO MONTSANT Consell Regulador Plaça Quartera, 6 43730 Falset Tel. 34 977 83 17 42 · Fax: 34 977 83 06 76 · Email: [email protected] www.domontsant.com D.O. MONTSANT INFORMATION DOSSIER INTRODUCTION The D.O. Montsant (Designation of Origin or wine appellation), despite being a recently created wine appellation, has years of wine-making history to its name. Wine experts and press consider it to be an up and coming region and prestigious magazines such as “The Wine Spectator” have declared it to be “a great discovery”. The quality of Montsant wines is key to their success, as too is their great value for money. The prestigious Spanish wine guide, “Guia Peñin” agrees that “the quality of Montsant wines and their great prices make this region an excellent alternative.” In the United States, “Wine & Spirits” magazine have stated that “Montsant should be watched with interest”. Montsant wines appear in some of the most prestigious wine rankings in the World and they always tend to be the best priced amongst their rivals at the top of the list. The professionals and wineries behind the DO Montsant label are very enthusiastic. Many wineries are co-operatives with important social bases and the winemakers who make Montsant wines are often under 40 years old. We at the DO Montsant believe that youth, coupled with a solid wine-making tradition is synonymous of future, new ideas and risk-taking. To conclude, this is the DO Montsant today: a young wine appellation with a promising future ahead of it. 1 THE REGULATORY COUNCIL The wines of the DO Montsant are governed by the Regulatory council or body. -
Protocols for Monitoring Harmful Algal Blooms for Sustainable Aquaculture and Coastal Fisheries in Chile (Supplement Data)
Protocols for monitoring Harmful Algal Blooms for sustainable aquaculture and coastal fisheries in Chile (Supplement data) Provided by Kyoko Yarimizu, et al. Table S1. Phytoplankton Naming Dictionary: This dictionary was constructed from the species observed in Chilean coast water in the past combined with the IOC list. Each name was verified with the list provided by IFOP and online dictionaries, AlgaeBase (https://www.algaebase.org/) and WoRMS (http://www.marinespecies.org/). The list is subjected to be updated. Phylum Class Order Family Genus Species Ochrophyta Bacillariophyceae Achnanthales Achnanthaceae Achnanthes Achnanthes longipes Bacillariophyta Coscinodiscophyceae Coscinodiscales Heliopeltaceae Actinoptychus Actinoptychus spp. Dinoflagellata Dinophyceae Gymnodiniales Gymnodiniaceae Akashiwo Akashiwo sanguinea Dinoflagellata Dinophyceae Gymnodiniales Gymnodiniaceae Amphidinium Amphidinium spp. Ochrophyta Bacillariophyceae Naviculales Amphipleuraceae Amphiprora Amphiprora spp. Bacillariophyta Bacillariophyceae Thalassiophysales Catenulaceae Amphora Amphora spp. Cyanobacteria Cyanophyceae Nostocales Aphanizomenonaceae Anabaenopsis Anabaenopsis milleri Cyanobacteria Cyanophyceae Oscillatoriales Coleofasciculaceae Anagnostidinema Anagnostidinema amphibium Anagnostidinema Cyanobacteria Cyanophyceae Oscillatoriales Coleofasciculaceae Anagnostidinema lemmermannii Cyanobacteria Cyanophyceae Oscillatoriales Microcoleaceae Annamia Annamia toxica Cyanobacteria Cyanophyceae Nostocales Aphanizomenonaceae Aphanizomenon Aphanizomenon flos-aquae -
Effects of Marine Harmful Algal Blooms on Bivalve Cellular Immunity and Infectious Diseases: a Review
Effects of marine Harmful Algal Blooms on bivalve cellular immunity and infectious diseases: a review Malwenn Lassudrie, Helene Hegaret, Gary Wikfors, Patricia Mirella da Silva To cite this version: Malwenn Lassudrie, Helene Hegaret, Gary Wikfors, Patricia Mirella da Silva. Effects of marine Harm- ful Algal Blooms on bivalve cellular immunity and infectious diseases: a review. Developmental and Comparative Immunology, Elsevier, 2020, 108, pp.103660. 10.1016/j.dci.2020.103660. hal-02880026 HAL Id: hal-02880026 https://hal.archives-ouvertes.fr/hal-02880026 Submitted on 24 Jun 2020 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. Effects of marine Harmful Algal Blooms on bivalve cellular immunity and infectious diseases: a review Malwenn Lassudrie1, Hélène Hégaret2, Gary H. Wikfors3, Patricia Mirella da Silva4 1 Ifremer, LER-BO, F- 29900 Concarneau, France. 2 CNRS, Univ Brest, IRD, Ifremer, LEMAR, F-29280, Plouzané, France. 3 NOAA Fisheries Service, Northeast Fisheries Science Center, Milford, CT 0640 USA. 4 Laboratory of Immunology and Pathology of Invertebrates, Department of Molecular Biology, Federal University of Paraíba (UFPB), Paraíba, Brazil. Abstract Bivalves were long thought to be “symptomless carriers” of marine microalgal toxins to human seafood consumers. -
A Parasite of Marine Rotifers: a New Lineage of Dinokaryotic Dinoflagellates (Dinophyceae)
Hindawi Publishing Corporation Journal of Marine Biology Volume 2015, Article ID 614609, 5 pages http://dx.doi.org/10.1155/2015/614609 Research Article A Parasite of Marine Rotifers: A New Lineage of Dinokaryotic Dinoflagellates (Dinophyceae) Fernando Gómez1 and Alf Skovgaard2 1 Laboratory of Plankton Systems, Oceanographic Institute, University of Sao˜ Paulo, Prac¸a do Oceanografico´ 191, Cidade Universitaria,´ 05508-900 Butanta,˜ SP, Brazil 2Department of Veterinary Disease Biology, University of Copenhagen, Stigbøjlen 7, 1870 Frederiksberg C, Denmark Correspondence should be addressed to Fernando Gomez;´ [email protected] Received 11 July 2015; Accepted 27 August 2015 Academic Editor: Gerardo R. Vasta Copyright © 2015 F. Gomez´ and A. Skovgaard. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Dinoflagellate infections have been reported for different protistan and animal hosts. We report, for the first time, the association between a dinoflagellate parasite and a rotifer host, tentatively Synchaeta sp. (Rotifera), collected from the port of Valencia, NW Mediterranean Sea. The rotifer contained a sporangium with 100–200 thecate dinospores that develop synchronically through palintomic sporogenesis. This undescribed dinoflagellate forms a new and divergent fast-evolved lineage that branches amongthe dinokaryotic dinoflagellates. 1. Introduction form independent lineages with no evident relation to other dinoflagellates [12]. In this study, we describe a new lineage of The alveolates (or Alveolata) are a major lineage of protists an undescribed parasitic dinoflagellate that largely diverged divided into three main phyla: ciliates, apicomplexans, and from other known dinoflagellates. -
Metabolomic Profiles of Dinophysis Acuminata and Dinophysis Acuta
Metabolomic Profiles of Dinophysis acuminata and Dinophysis acuta Using Non- Targeted High-Resolution Mass Spectrometry Effect of Nutritional Status and Prey García-Portela, María; Reguera, Beatriz; Sibat, Manoella; Altenburger, Andreas; Rodríguez, Francisco; Hess, Philipp Published in: Marine Drugs DOI: 10.3390/md16050143 Publication date: 2018 Document version Publisher's PDF, also known as Version of record Document license: CC BY Citation for published version (APA): García-Portela, M., Reguera, B., Sibat, M., Altenburger, A., Rodríguez, F., & Hess, P. (2018). Metabolomic Profiles of Dinophysis acuminata and Dinophysis acuta Using Non-Targeted High-Resolution Mass Spectrometry: Effect of Nutritional Status and Prey. Marine Drugs, 16(5), [143]. https://doi.org/10.3390/md16050143 Download date: 24. Sep. 2021 marine drugs Article Metabolomic Profiles of Dinophysis acuminata and Dinophysis acuta Using Non-Targeted High-Resolution Mass Spectrometry: Effect of Nutritional Status and Prey María García-Portela 1,* ID , Beatriz Reguera 1 ID , Manoella Sibat 2 ID , Andreas Altenburger 3 ID , Francisco Rodríguez 1 and Philipp Hess 2 ID 1 IEO, Oceanographic Centre of Vigo, Subida a Radio Faro 50, Vigo 36390, Spain; [email protected] (B.R.); [email protected] (F.R.) 2 IFREMER, Phycotoxins Laboratory, rue de l’Ile d’Yeu, BP 21105, F-44311 Nantes, France; [email protected] (M.S.); [email protected] (P.H.) 3 Natural History Museum of Denmark, University of Copenhagen, Øster Voldgade 5-7, 1350 Copenhagen, Denmark; [email protected] * Correspondence: [email protected]; Tel.: +34-986-462-273 Received: 14 February 2018; Accepted: 20 April 2018; Published: 26 April 2018 Abstract: Photosynthetic species of the genus Dinophysis are obligate mixotrophs with temporary plastids (kleptoplastids) that are acquired from the ciliate Mesodinium rubrum, which feeds on cryptophytes of the Teleaulax-Plagioselmis-Geminigera clade. -
Dinoflagelados (Dinoflagellata) Tóxicos De La Costa De Chiapas, México, Pacífico Centro Oriental
Dinoflagelados (Dinoflagellata) tóxicos de la costa de Chiapas, México, Pacífico centro oriental Ebodio Maciel-Baltazar Facultad de Ciencias Biológicas, Universidad de Ciencias y Artes de Chiapas. Libramiento Norte Poniente 1150 Colonia Lajas Maciel, Tuxtla Gutiérrez, Chiapas; [email protected] Recibido 12-VII-2014 • Corregido 16-X-2014 • Aceptado 25-X-2014 ABSTRACT: In this paper are given to know toxic species with public RESUMEN: Se documentan las especies productoras de toxinas con health importance, samples were obtained during 2010-2012 in the importancia en salud pública, se tomaron muestras durante los años coast of Chiapas, México, by net (20 µm mesh) in vertical hauls (up to 15 2010-2012 en la costa de Chiapas, con una red (20µm de malla) por m), fixed with Lugol’s solution and studied by light microscope bright arrastres verticales (a 15m), fijadas con lugol y estudiadas con técnicas field, Twenty-four species were documented to be present in the study de microscopia de luz de campo claro, se documentaron 24 especies área: Gymnodinium (1); Alexandrium (5); Pyrodinium (1); Phalacroma presentes en el área de estudio: Gymnodinium (1); Alexandrium (5); (2); Dinophysis (4);Prorocentrum (4); Karenia (4); Protoceratium (1); Pyrodinium (1); Phalacroma (2); Dinophysis (4)Prorocentrum (4); Karenia Gonyaulax (1); Lingulodinium (1), It was found corresponding with 64- (4); Protoceratium (1); Gonyaulax (1); Lingulodinium (1), que corres- 89% of the species from coastal waters of México. ponden entre el 64 al 89% de las especies reportadas para el Pacífico mexicano. Key words: Dinoflagellates; red tide; harmful algae; ficotoxins; Chiapas. Palabras clave: Dinoflagelados; marea roja; algas nocivas; ficotoxinas; Chiapas. -
Margalef De Montsant, Priorat, Tarragona)
EL PRIMER GRABADO PARIETAL NATURALISTA EN CUEVA DE CATALUÑA: LA COVA DE LA TAVERNA (MARGALEF DE MONTSANT, PRIORAT, TARRAGONA) por JOSEP M.ª FULLOLA I PERICOT * y RAMÓN VIÑAS I VALLVERDU * ANTECEDENTES El hallazgo de un grabado parietal en la cova de la Taverna es el resultado del programa de prospecciones y excavaciones que, bajo la dirección de uno de nosotros, está llevando a cabo en el valle del Montsant desde hace cinco años un equipo de trabajo de la Universidad de Barcelona desde los Departamentos de Prehistoria de la Facultad de Filosofía y Letras de Tarragona y de la Facultad de Geografía e Historia de Barcelona, todo ello con los correspondientes permi sos de excavación y el soporte económico del Servei d'Arqueologia de la Direc- ció General del Patrimoni Artístic de la Conselleria de Cultura de la Generali- tat de Catalunya (Fig. 1). El río Montsant es un subafluente del Ebro que nace en las cercanas mon tañas de Prades y que, tras atravesar la hoya de Ulldemolins, se encaja en un es trecho desfiladero. A medida que esa garganta va ensanchándose, hasta hacerse transitable, van apareciendo abrigos, terrazas fluviales y yacimientos de super ficie que constatan la presencia del hombre prehistórico en este sector central del valle del río Montsant; son los términos municipales de Margalef de Mon tsant y de la Bisbal de Falset. A continuación, tras contornear la sierra del Montsant, el río del mismo nombre se une al Siurana en Lloà; este último de semboca en el Ebro ya muy cerca de su final, en la población de García.