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Ibghi M, Rijal Leblad B, L’Bachir El Kbiach M, Aboualaalaa H, Daoudi M, Masseret E, Le Floc’h E, Hervé F, Bilien G, Chomerat N, Amzil Z, Laabir M. Molecular Phylogeny, Morphology, Growth and Toxicity of Three Benthic Dinoflagellates Ostreopsis sp. 9, Prorocentrum lima and Coolia monotis Developing in Strait of Gibraltar, Southwestern Mediterranean. Toxins (Basel) 2024; 16:49. [PMID: 38251265 PMCID: PMC10819257 DOI: 10.3390/toxins16010049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2023] [Revised: 01/11/2024] [Accepted: 01/12/2024] [Indexed: 01/23/2024] Open
Abstract
Few works have been carried out on benthic harmful algal blooms (BHAB) species in the southern Mediterranean and no data are available for the highly dynamic Strait of Gibraltar (western Mediterranean waters). For the first time, Ostreopsis sp. 9, Prorocentrum lima and Coolia monotis were isolated in this key region in terms of exchanges between the Atlantic Ocean and the Mediterranean and subject to intense maritime traffic. Ribotyping confirmed the morphological identification of these three dinoflagellates species. Monoclonal cultures were established and the maximum growth rate and cell yield were measured at a temperature of 24 °C and an irradiance of 90 µmol photons m-2 s-1, for each species: 0.26 ± 0.02 d-1 (8.75 × 103 cell mL-1 after 28 days) for Ostreopsis sp. 9, 0.21 ± 0.01 d-1 (49 × 103 cell mL-1 after 145 days) for P. lima and 0.21 ± 0.01 d-1 (10.02 × 103 cell mL-1 after 28 days) for C. monotis. Only P. lima was toxic with concentrations of okadaic acid and dinophysistoxin-1 measured in optimal growth conditions ranging from 6.4 pg cell-1 to 26.97 pg cell-1 and from 5.19 to 25.27 pg cell-1, respectively. The toxin content of this species varied in function of the growth phase. Temperature influenced the growth and toxin content of P. lima. Results suggest that future warming of Mediterranean coastal waters may lead to higher growth rates and to increases in cellular toxin levels in P. lima. Nitrate and ammonia affected the toxin content of P. lima but no clear trend was noted. In further studies, we have to isolate other BHAB species and strains from Strait of Gibraltar waters to obtain more insight into their diversity and toxicity.
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Affiliation(s)
- Mustapha Ibghi
- Marine Environment Monitoring Laboratory, INRH (Moroccan Institute of Fisheries Research), Tangier 90000, Morocco; (M.I.); (H.A.); (M.D.)
- Equipe de Biotechnologie Végétale, Faculty of Sciences, Abdelmalek Essaadi University Tetouan, Tetouan 93000, Morocco;
- MARBEC, University of Montpellier, CNRS, IRD, Ifremer, 34095 Montpellier, France; (E.M.); (E.L.F.)
| | - Benlahcen Rijal Leblad
- Marine Environment Monitoring Laboratory, INRH (Moroccan Institute of Fisheries Research), Tangier 90000, Morocco; (M.I.); (H.A.); (M.D.)
| | - Mohammed L’Bachir El Kbiach
- Equipe de Biotechnologie Végétale, Faculty of Sciences, Abdelmalek Essaadi University Tetouan, Tetouan 93000, Morocco;
| | - Hicham Aboualaalaa
- Marine Environment Monitoring Laboratory, INRH (Moroccan Institute of Fisheries Research), Tangier 90000, Morocco; (M.I.); (H.A.); (M.D.)
- Equipe de Biotechnologie Végétale, Faculty of Sciences, Abdelmalek Essaadi University Tetouan, Tetouan 93000, Morocco;
- MARBEC, University of Montpellier, CNRS, IRD, Ifremer, 34095 Montpellier, France; (E.M.); (E.L.F.)
| | - Mouna Daoudi
- Marine Environment Monitoring Laboratory, INRH (Moroccan Institute of Fisheries Research), Tangier 90000, Morocco; (M.I.); (H.A.); (M.D.)
| | - Estelle Masseret
- MARBEC, University of Montpellier, CNRS, IRD, Ifremer, 34095 Montpellier, France; (E.M.); (E.L.F.)
| | - Emilie Le Floc’h
- MARBEC, University of Montpellier, CNRS, IRD, Ifremer, 34095 Montpellier, France; (E.M.); (E.L.F.)
| | - Fabienne Hervé
- Laboratoire Phycotoxines, IFREMER (French Research Institute for Exploitation of the Sea)/PHYTOX/METALG, 44311 Nantes, France; (F.H.); (Z.A.)
| | - Gwenael Bilien
- IFREMER, Unité Littoral, Station de Biologie Marine, Place de la Croix, 29185 Concarneau, France; (G.B.); (N.C.)
| | - Nicolas Chomerat
- IFREMER, Unité Littoral, Station de Biologie Marine, Place de la Croix, 29185 Concarneau, France; (G.B.); (N.C.)
| | - Zouher Amzil
- Laboratoire Phycotoxines, IFREMER (French Research Institute for Exploitation of the Sea)/PHYTOX/METALG, 44311 Nantes, France; (F.H.); (Z.A.)
| | - Mohamed Laabir
- MARBEC, University of Montpellier, CNRS, IRD, Ifremer, 34095 Montpellier, France; (E.M.); (E.L.F.)
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Ibghi M, El Kbiach ML, Rijal Leblad B, Aboualaalaa H, Hervé F, Sibat M, Chair A, Masseret E, Maamour N, Daoudi M, Amzil Z, Laabir M. Occurrence of three dominant epibenthic dinoflagellates (Ostreopsis spp., Coolia monotis and Prorocentrum lima) in relation to biotic substrates and environmental factors in a highly dynamic ecosystem, the Strait of Gibraltar (Southwestern Mediterranean). ENVIRONMENTAL MONITORING AND ASSESSMENT 2022; 194:810. [PMID: 36129570 PMCID: PMC9490739 DOI: 10.1007/s10661-022-10426-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Accepted: 08/30/2022] [Indexed: 06/15/2023]
Abstract
No studies have been carried out on the benthic harmful algal blooms (BHABs) along the Strait of Gibraltar in the Mediterranean, and little is known about the diversity of blooming species. Here, epibenthic dinoflagellates were monitored at least biweekly over 18 months (May 2019-November 2020) in Oued Lihoud, Cap Malabata and Dalia on the thalli of five dominant macrophytes and in the water column. This is the first report on the seasonal distribution of BHAB species hosted by natural biotic substrates in the Strait of Gibraltar, which is known for high hydrodynamics, major entry of Atlantic waters and important maritime traffic. Three BHAB dinoflagellates were observed in the surveyed areas: Ostreopsis spp., Coolia monotis and Prorocentrum lima. The analysis of all data at the three sites showed that Dictyota dichotoma was the most favourable macroalgae host for these benthic dinoflagellates. The highest cell densities were observed in Cap Malabata for Ostreopsis spp. (2.7 × 105 cells/g fresh weight in September 2020), P. lima (4.57 × 104 cells/g FW in September 2020) and C. monotis (4.07 × 104 cells/g FW in June 2019). Phosphate and temperature were positively correlated to the abundances of the studied thermophilic BHAB species. In contrast, negative correlations were recorded with salinity, ammonium, nitrite, nitrate, DIN, nitrogen/phosphate ratio and suspended material, attesting of the complex relationships between environmental factors and BHAB species dynamic in each marine ecosystem. Toxin analyses of the natural phytoplankton assemblage during BHABs showed the presence of only lipophilic toxins, namely okadaic acid and dinophysistoxins produced by P. lima. These BHABs species have to be isolated to establish monoclonal cultures for ribotyping and ecophysiological investigations.
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Affiliation(s)
- Mustapha Ibghi
- Equipe de Biotechnologie Végétale, Faculty of Sciences, Abdelmalek Essaadi University, Tetouan, Morocco
- National Institute of Fisheries Research (INRH), Tangier, Morocco
- CNRS, IRD, Ifremer, Montpellier University, MARBEC, Montpellier, France
| | | | | | - Hicham Aboualaalaa
- Equipe de Biotechnologie Végétale, Faculty of Sciences, Abdelmalek Essaadi University, Tetouan, Morocco
- National Institute of Fisheries Research (INRH), Tangier, Morocco
- CNRS, IRD, Ifremer, Montpellier University, MARBEC, Montpellier, France
| | - Fabienne Hervé
- French Institute for Research and Exploitation of the sea (IFREMER), METALG laboratory, PHYTOX, F-44000, Nantes, France
| | - Manoella Sibat
- French Institute for Research and Exploitation of the sea (IFREMER), METALG laboratory, PHYTOX, F-44000, Nantes, France
| | - Adil Chair
- National Institute of Fisheries Research (INRH), Tangier, Morocco
- Marine Geosciences and Soil Sciences Laboratory, Faculty of Sciences, Chouaïb Dokkali University, El Jadida, Morocco
| | - Estelle Masseret
- CNRS, IRD, Ifremer, Montpellier University, MARBEC, Montpellier, France
| | - Niama Maamour
- National Institute of Fisheries Research (INRH), Tangier, Morocco
| | - Mouna Daoudi
- National Institute of Fisheries Research (INRH), Tangier, Morocco
| | - Zouher Amzil
- French Institute for Research and Exploitation of the sea (IFREMER), METALG laboratory, PHYTOX, F-44000, Nantes, France
| | - Mohamed Laabir
- CNRS, IRD, Ifremer, Montpellier University, MARBEC, Montpellier, France
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Monserrat M, Catania D, Asnaghi V, Chiantore M, Lemée R, Mangialajo L. The role of habitat in the facilitation of Ostreopsis spp. blooms. HARMFUL ALGAE 2022; 113:102199. [PMID: 35287932 DOI: 10.1016/j.hal.2022.102199] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Revised: 01/05/2022] [Accepted: 02/02/2022] [Indexed: 06/14/2023]
Abstract
In recent decades, recurrent Ostreopsis spp. blooms have been recorded throughout the globe, causing public health issues and mass mortalities of invertebrates. Ostreopsis species are benthic and develop in shallow waters in close relation with a substrate, but possible substrate preferences are still ambiguous. Bloom develops on both living and dead substrates and several interacting biotic and abiotic factors acting at different spatial scales can potentially foster or regulate Ostreopsis spp. development. The objective of this review is to collect and summarize information on Ostreopsis spp. blooms related to the habitat at different spatial scales, in order to assess preferences and trends. References including Ostreopsis spp. samplings in the field were analysed in this review, as potentially including information about the micro- (substrate), meso‑ (community) and macrohabitat (ecosystem) related to Ostreopsis spp. blooms. The sampled substrate and the ecosystem where Ostreopsis spp. were collected were generally reported and described in the studies, while the description of the mesohabitat was rarely reported. Ostreopsis spp. were generally described as attached to biotic substrates and in particular, macroalgae, even in studies conducted in coral reefs, where macroalgae are generally not dominant (but they can be in case of coral reef degradation). In both temperate and tropical areas, Ostreopsis spp. were mostly sampled on algal species usually forming medium or low complexity communities (erect or turf-forming algae), often characteristic from post-regime shift scenarios, and rarely on canopy-forming species (such as fucoids and kelps). This literature review highlights the need of collecting more information about the mesohabitat where important Ostreopsis spp. blooms develop, as much as of the underlying mechanisms driving eventual differences on Ostreopsis spp. abundances. This knowledge would allow a better risk assessment of Ostreopsis spp. blooms, identifying areas at high risk on the base of the benthic habitats.
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Affiliation(s)
- Margalida Monserrat
- Université Côte d'Azur, CNRS, UMR 7035 ECOSEAS, Nice, France; Sorbonne Université, CNRS, Laboratoire d'Océanographie de Villefranche, Villefranche-sur-mer, France; Federative Research Institute - Marine Resources, Université Côte d'Azur, Nice, France.
| | - Daniela Catania
- Université Côte d'Azur, CNRS, UMR 7035 ECOSEAS, Nice, France; Sorbonne Université, CNRS, Laboratoire d'Océanographie de Villefranche, Villefranche-sur-mer, France
| | | | | | - Rodolphe Lemée
- Sorbonne Université, CNRS, Laboratoire d'Océanographie de Villefranche, Villefranche-sur-mer, France
| | - Luisa Mangialajo
- Université Côte d'Azur, CNRS, UMR 7035 ECOSEAS, Nice, France; Federative Research Institute - Marine Resources, Université Côte d'Azur, Nice, France
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Xu WF, Wu NN, Wu YW, Qi YX, Wei MY, Pineda LM, Ng MG, Spadafora C, Zheng JY, Lu L, Wang CY, Gu YC, Shao CL. Structure modification, antialgal, antiplasmodial, and toxic evaluations of a series of new marine-derived 14-membered resorcylic acid lactone derivatives. MARINE LIFE SCIENCE & TECHNOLOGY 2022; 4:88-97. [PMID: 37073350 PMCID: PMC10077203 DOI: 10.1007/s42995-021-00103-0] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Accepted: 04/01/2021] [Indexed: 05/03/2023]
Abstract
Marine natural products play critical roles in the chemical defense of many marine organisms and are essential, reputable sources of successful drug leads. Sixty-seven 14-membered resorcylic acid lactone derivatives 3-27 and 30-71 of the natural product zeaenol (1) isolated from the marine-derived fungus Cochliobolus lunatus were semisynthesized by chlorination, acylation, esterification, and acetalization in one to three steps. The structures of these new derivatives were established by HRESIMS and NMR techniques. All the compounds (1-71) were evaluated for their antialgal and antiplasmodial activities. Among them, 14 compounds displayed antifouling activities against adhesion of the fouling diatoms. In particular, 9 and 34 exhibited strong and selective inhibitory effects against the diatoms Navicula laevissima and Navicula exigua (EC50 = 6.67 and 8.55 μmol/L), respectively, which were similar in efficacy to those of the positive control SeaNine 211 (EC50 = 2.90 and 9.74 μmol/L). More importantly, 38, 39, and 69-71 showed potent antiplasmodial activities against Plasmodium falciparum with IC50 values ranging from 3.54 to 9.72 μmol/L. Very interestingly, the five antiplasmodial derivatives displayed non-toxicity in the cytotoxicity assays and the zebrafish embryos model, thus, representing potential promising antiplasmodial drug agents. The preliminary structure-activity relationships indicated that biphenyl substituent at C-2, acetonide at positions C-5' and C-6', and tri- or tetra-substituted of acyl groups increased the antiplasmodial activity. Therefore, combining evaluation of chemical ecology with pharmacological models will be implemented as a systematic strategy, not only for environmentally friendly antifoulants but also for structurally novel drugs. Supplementary Information The online version contains supplementary material available at 10.1007/s42995-021-00103-0.
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Affiliation(s)
- Wei-Feng Xu
- Key Laboratory of Marine Drugs, the Ministry of Education of China, School of Medicine and Pharmacy, Ocean University of China, Qingdao, 266003 China
- Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266237 China
- State Key Laboratory for Marine Corrosion and Protection, Luoyang Ship Material Research Institute (LSMRI), Qingdao, 266237 China
| | - Na-Na Wu
- Key Laboratory of Marine Drugs, the Ministry of Education of China, School of Medicine and Pharmacy, Ocean University of China, Qingdao, 266003 China
- Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266237 China
- State Key Laboratory for Marine Corrosion and Protection, Luoyang Ship Material Research Institute (LSMRI), Qingdao, 266237 China
| | - Yan-Wei Wu
- Key Laboratory of Marine Drugs, the Ministry of Education of China, School of Medicine and Pharmacy, Ocean University of China, Qingdao, 266003 China
- Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266237 China
| | - Yue-Xuan Qi
- Key Laboratory of Marine Drugs, the Ministry of Education of China, School of Medicine and Pharmacy, Ocean University of China, Qingdao, 266003 China
- Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266237 China
- State Key Laboratory for Marine Corrosion and Protection, Luoyang Ship Material Research Institute (LSMRI), Qingdao, 266237 China
| | - Mei-Yan Wei
- Key Laboratory of Marine Drugs, the Ministry of Education of China, School of Medicine and Pharmacy, Ocean University of China, Qingdao, 266003 China
- Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266237 China
| | - Laura M. Pineda
- Center of Cellular and Molecular Biology of Diseases, Instituto de Investigaciones Científcas y Servicios de Alta Tecnología, City of Knowledge, Clayton, Apartado 0816-02852 Panama
| | - Michelle G. Ng
- Center of Cellular and Molecular Biology of Diseases, Instituto de Investigaciones Científcas y Servicios de Alta Tecnología, City of Knowledge, Clayton, Apartado 0816-02852 Panama
| | - Carmenza Spadafora
- Center of Cellular and Molecular Biology of Diseases, Instituto de Investigaciones Científcas y Servicios de Alta Tecnología, City of Knowledge, Clayton, Apartado 0816-02852 Panama
| | - Ji-Yong Zheng
- State Key Laboratory for Marine Corrosion and Protection, Luoyang Ship Material Research Institute (LSMRI), Qingdao, 266237 China
| | - Ling Lu
- Key Laboratory of Marine Drugs, the Ministry of Education of China, School of Medicine and Pharmacy, Ocean University of China, Qingdao, 266003 China
- Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266237 China
| | - Chang-Yun Wang
- Key Laboratory of Marine Drugs, the Ministry of Education of China, School of Medicine and Pharmacy, Ocean University of China, Qingdao, 266003 China
- Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266237 China
| | - Yu-Cheng Gu
- Syngenta Jealott’s Hill International Research Centre, Bracknell, Berkshire, RG42 6EY UK
| | - Chang-Lun Shao
- Key Laboratory of Marine Drugs, the Ministry of Education of China, School of Medicine and Pharmacy, Ocean University of China, Qingdao, 266003 China
- Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266237 China
- State Key Laboratory for Marine Corrosion and Protection, Luoyang Ship Material Research Institute (LSMRI), Qingdao, 266237 China
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Review of Harmful Algal Blooms in the Coastal Mediterranean Sea, with a Focus on Greek Waters. DIVERSITY 2021. [DOI: 10.3390/d13080396] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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.
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Marampouti C, Buma AGJ, de Boer MK. Mediterranean alien harmful algal blooms: origins and impacts. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:3837-3851. [PMID: 32803614 PMCID: PMC7835144 DOI: 10.1007/s11356-020-10383-1] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/29/2020] [Accepted: 08/03/2020] [Indexed: 06/11/2023]
Abstract
Harmful algal blooms (HABs) are mostly phytoplankton blooms, which have detrimental environmental and socioeconomic impacts. The Mediterranean Sea due to its enclosed nature is of special concern since it has an enormously rich native biodiversity. Though, it is also the world's most invaded marine ecosystem and is considered at very high risk of future invasions. The aim of this review study is to explore the origins, establishment, environmental, and socioeconomic impacts of HABs caused by nonnative algal species in the Mediterranean Sea. Based on this, it is also discussed whether HABs form an increasing threat in the basin, and what could possibly be done to prevent or to minimize their impacts. The increasing rate of their introduction and the harmful impacts that they have on the environment, economy, and human health makes it important to have accurate knowledge about HABs. Anthropogenic activities and climate change are considered the main contributors of alien invasions but also the main enablers of HAB events. Mediterranean HABs are adequately studied, but there are no studies purposefully concerning invasive microalgae species in the basin. In the present study, 20 species have been identified, and an attempt has been made to collect their introduction information, as well as known or suspected impacts. Future research should be focused on data mining, current legislation updates, and monitoring of Mediterranean coastlines.
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Affiliation(s)
- Christina Marampouti
- Department of Ocean Ecosystems, Energy and Sustainability Research Institute Groningen, University of Groningen, Nijenborgh 7, AG 9747, Groningen, The Netherlands.
| | - Anita G J Buma
- Department of Ocean Ecosystems, Energy and Sustainability Research Institute Groningen, University of Groningen, Nijenborgh 7, AG 9747, Groningen, The Netherlands
| | - M Karin de Boer
- Department of Ocean Ecosystems, Energy and Sustainability Research Institute Groningen, University of Groningen, Nijenborgh 7, AG 9747, Groningen, The Netherlands
- Bèta Science Shop, Faculty of Science and Engineering, University of Groningen, Nijenborgh 6, AG 9747, Groningen, The Netherlands
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Murray JS, Nishimura T, Finch SC, Rhodes LL, Puddick J, Harwood DT, Larsson ME, Doblin MA, Leung P, Yan M, Rise F, Wilkins AL, Prinsep MR. The role of 44-methylgambierone in ciguatera fish poisoning: Acute toxicity, production by marine microalgae and its potential as a biomarker for Gambierdiscus spp. HARMFUL ALGAE 2020; 97:101853. [PMID: 32732047 DOI: 10.1016/j.hal.2020.101853] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Revised: 06/01/2020] [Accepted: 06/07/2020] [Indexed: 06/11/2023]
Abstract
Ciguatera fish poisoning (CFP) is prevalent around the tropical and sub-tropical latitudes of the world and impacts many Pacific island communities intrinsically linked to the reef system for sustenance and trade. While the genus Gambierdiscus has been linked with CFP, it is commonly found on tropical reef systems in microalgal assemblages with other genera of toxin-producing, epiphytic and/or benthic dinoflagellates - Amphidinium, Coolia, Fukuyoa, Ostreopsis and Prorocentrum. Identifying a biomarker compound that can be used for the early detection of Gambierdiscus blooms, specifically in a mixed microalgal community, is paramount in enabling the development of management and mitigation strategies. Following on from the recent structural elucidation of 44-methylgambierone, its potential to contribute to CFP intoxication events and applicability as a biomarker compound for Gambierdiscus spp. was investigated. The acute toxicity of this secondary metabolite was determined by intraperitoneal injection using mice, which showed it to be of low toxicity, with an LD50 between 20 and 38 mg kg-1. The production of 44-methylgambierone by 252 marine microalgal isolates consisting of 90 species from 32 genera across seven classes, was assessed by liquid chromatography-tandem mass spectrometry. It was discovered that the production of this secondary metabolite was ubiquitous to the eight Gambierdiscus species tested, however not all isolates of G. carpenteri, and some species/isolates of Coolia and Fukuyoa.
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Affiliation(s)
- J Sam Murray
- Cawthron Institute, Private Bag 2, Nelson 7042, New Zealand; New Zealand Food Safety Science and Research Centre, Massey University, Private Bag 11-222, Palmerston North 4442, New Zealand; School of Science, University of Waikato, Private Bag 3105, Hamilton 3240, New Zealand.
| | | | - Sarah C Finch
- AgResearch, Ruakura Research Centre, Private Bag 3123, Hamilton 3240, New Zealand
| | | | | | - D Tim Harwood
- Cawthron Institute, Private Bag 2, Nelson 7042, New Zealand; New Zealand Food Safety Science and Research Centre, Massey University, Private Bag 11-222, Palmerston North 4442, New Zealand
| | - Michaela E Larsson
- Climate Change Cluster, University of Technology Sydney, P.O. Box 123 Broadway, Sydney, NSW 2007, Australia
| | - Martina A Doblin
- Climate Change Cluster, University of Technology Sydney, P.O. Box 123 Broadway, Sydney, NSW 2007, Australia
| | - Priscilla Leung
- State Key Laboratory of Marine Pollution, City University of Hong Kong, Hong Kong, China; Research Centre for the Oceans and Human Health, City University of Hong Kong Shenzhen Research Institute, Shenzhen, China
| | - Meng Yan
- State Key Laboratory of Marine Pollution, City University of Hong Kong, Hong Kong, China; Research Centre for the Oceans and Human Health, City University of Hong Kong Shenzhen Research Institute, Shenzhen, China
| | - Frode Rise
- Department of Chemistry, University of Oslo, P.O. Box 1033, Blindern, NO-0315 Oslo, Norway
| | - Alistair L Wilkins
- Department of Chemistry, University of Oslo, P.O. Box 1033, Blindern, NO-0315 Oslo, Norway
| | - Michèle R Prinsep
- School of Science, University of Waikato, Private Bag 3105, Hamilton 3240, New Zealand
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Gémin MP, Réveillon D, Hervé F, Pavaux AS, Tharaud M, Séchet V, Bertrand S, Lemée R, Amzil Z. Toxin content of Ostreopsis cf. ovata depends on bloom phases, depth and macroalgal substrate in the NW Mediterranean Sea. HARMFUL ALGAE 2020; 92:101727. [PMID: 32113596 DOI: 10.1016/j.hal.2019.101727] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Revised: 11/29/2019] [Accepted: 12/03/2019] [Indexed: 06/10/2023]
Abstract
Over the last fifteen years, blooms of the genus Ostreopsis have been reported more frequently and at higher abundances in the Mediterranean area. Ostreopsis cf. ovata is known to produce ovatoxins (OVTXs), structural analogues of palytoxin, which is one of the most potent non-polymeric toxins. However, the production of OVTXs is poorly characterized in situ. The present study focuses on toxin content and profile according to the bloom phase during summer 2017 in Villefranche-sur-Mer, France (NW Mediterranean Sea), depth (from 0.5 to 5 m) and three different macroalgal substrates of this epiphytic dinoflagellate (Padina pavonica, Dictyota spp. and Halopteris scoparia). Ovatoxin quantification of all samples was performed by liquid chromatography coupled to tandem mass spectrometry (LC-MS/MS). The bloom started at the end of June and declined in mid-July, showing the typical seasonal pattern of the NW Mediterranean Sea area. The peak was observed on the 10 July with 1.8 × 106 cells/g FW and 1.7 × 104 cells/L for benthic and planktonic cells, respectively. Total toxin content of cells, collected using artificial substrates, increased during the exponential and stationary growth phases. After reaching a maximum concentration of 9.2 pg/cell on 18 July, toxin concentration decreased and remained stable from 25 July until the end of monitoring. A decreasing trend of the abundance and of the associated total toxin content was noted with depth. Finally, the decreasing order of maximal epiphytic concentration of O. cf. ovata was: Dictyota spp. (8.3 × 105 cells/g FW), H. scoparia (3.1 × 105 cells/g FW) and P. pavonica (1.6 × 105 cells/g FW). Interestingly, the highest OVTX quota was obtained in cells present on Halopteris scoparia, then on Dictyota spp. and Padina pavonica. This suggests that the nature of the macroalgal substrate influences both growth and toxin production of O. cf. ovata and further work will be required to understand the underlying mechanisms (e.g., competition for nutrition, pH or allelopathic interaction). However, the toxin profiles (i.e., the proportion of each ovatoxin analogue) were not affected by any of the studied parameters (bloom phase, depth, macroalgae or artificial substrates).
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Affiliation(s)
| | | | - Fabienne Hervé
- IFREMER - Phycotoxins Laboratory, F- 44311 Nantes 03, France
| | - Anne-Sophie Pavaux
- Sorbonne Université, CNRS, Laboratoire d'Océanographie de Villefranche, UMR 7093, BP 28, F-06230 Villefranche-sur-Mer, France
| | - Maxime Tharaud
- IFREMER - Phycotoxins Laboratory, F- 44311 Nantes 03, France
| | | | - Samuel Bertrand
- Groupe Mer, Molécules, Santé-EA 2160, UFR des Sciences Pharmaceutiques et Biologiques, Université de Nantes, Nantes-cedex 1 44035, France
| | - Rodolphe Lemée
- Sorbonne Université, CNRS, Laboratoire d'Océanographie de Villefranche, UMR 7093, BP 28, F-06230 Villefranche-sur-Mer, France
| | - Zouher Amzil
- IFREMER - Phycotoxins Laboratory, F- 44311 Nantes 03, France
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Ben Gharbia H, Laabir M, Ben Mhamed A, Gueroun SKM, Daly Yahia MN, Nouri H, M'Rabet C, Shili A, Kéfi-Daly Yahia O. Occurrence of epibenthic dinoflagellates in relation to biotic substrates and to environmental factors in Southern Mediterranean (Bizerte Bay and Lagoon, Tunisia): An emphasis on the harmful Ostreopsis spp., Prorocentrum lima and Coolia monotis. HARMFUL ALGAE 2019; 90:101704. [PMID: 31806162 DOI: 10.1016/j.hal.2019.101704] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2019] [Revised: 10/28/2019] [Accepted: 10/29/2019] [Indexed: 06/10/2023]
Abstract
Harmful events associated with epibenthic dinoflagellates, have been reported more frequently over the last decades. Occurrence of potentially toxic benthic dinoflagellates, on the leaves of two magnoliophytes (Cymodocea nodosa and Zostera noltei) and thalli of the macroalgae (Ulva rigida), was monitored over one year (From May 2015 to April 2016) in the Bizerte Bay and Lagoon (North of Tunisia, Southern Mediterranean Sea). The investigated lagoon is known to be highly anthropized. This is the first report on the seasonal distribution of epibenthic dinoflagellates hosted by natural substrates, from two contrasted, adjacent coastal Mediterranean ecosystems. The environmental factors promoting the development of the harmful epibenthic dinoflagellates Ostreopsis spp., Prorocentrum lima and Coolia monotis were investigated. The highest cell densities were reached by Ostreopsis spp. (1.9 × 103 cells g-1 FW, in October 2015), P. lima (1.6 × 103 cells g-1 FW, in June 2015) and C. monotis (1.1 × 103 cells g-1 FW, in May 2015). C. nodosa and Z. noltei were the most favorable host macrophytes for C. monotis (in station L2) and Ostreopsis spp. (in station L3), respectively. Positive correlations were recorded between Ostreopsis spp. and temperature. Densities of the epibenthic dinoflagellates varied according to the collection site, and a great disparity was observed between the Bay and the Lagoon. Maximum concentrations were recorded on C. nodosa leaves from the Bizerte Bay, while low epiphytic cell abundances were associated with macrophytes sampled from the Bizerte Lagoon. The observed differences in dinoflagellate abundances between the two ecosystems (Bay-Lagoon) seemed not related to the nutrients, but rather to the poor environmental conditions in the lagoon.
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Affiliation(s)
- Hela Ben Gharbia
- Research Group on Oceanography and Plankton Ecology, Tunisian National Institute of Agronomy (INAT), 43 Avenue Charles Nicolle, IRESA- Carthage University, LR18ES41 (Tunis El Manar University), Tunis, 1082, Tunisia.
| | - Mohamed Laabir
- Center for Marine Biodiversity, Exploitation and Conservation (MARBEC), Institut de Recherche pour le Développement (IRD), Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER), Centre National de la Recherche Scientifique (CNRS), Montpellier University, Place Eugène Bataillon, CC093, Montpellier, Cedex 5, F-34095, France
| | - Abdelouahed Ben Mhamed
- National Institute for Fisheries Research, Central laboratories, Bd Sidi Abderrahmane Ain Diab 2, Casablanca, Morocco
| | - Sonia Khadija Maïté Gueroun
- Faculty of Sciences of Bizerte, Laboratory of Aquatic Systems Biodiversity and Functioning, 7021 Zarzouna, Carthage University, Bizerte, Tunisia
| | - Mohamed Néjib Daly Yahia
- Department of Biological and Environmental Sciences, College of Arts and Sciences, Qatar University, PO Box 2713, Doha, Qatar
| | - Habiba Nouri
- Institut de Recherche pour le Développement (IRD), 2 Rue Des Sports-El Menzah 1, BP 434, Tunis, 1004, Tunisia
| | - Charaf M'Rabet
- Research Group on Oceanography and Plankton Ecology, Tunisian National Institute of Agronomy (INAT), 43 Avenue Charles Nicolle, IRESA- Carthage University, LR18ES41 (Tunis El Manar University), Tunis, 1082, Tunisia
| | - Abdessalem Shili
- Tunisian National Institute of Agronomy (INAT), 43 Avenue Charles Nicolle, IRESA-Carthage University, Tunis, 1082, Tunisia
| | - Ons Kéfi-Daly Yahia
- Research Group on Oceanography and Plankton Ecology, Tunisian National Institute of Agronomy (INAT), 43 Avenue Charles Nicolle, IRESA- Carthage University, LR18ES41 (Tunis El Manar University), Tunis, 1082, Tunisia
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10
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Santos M, Oliveira PB, Moita MT, David H, Caeiro MF, Zingone A, Amorim A, Silva A. Ocurrence of Ostreopsis in two temperate coastal bays (SW iberia): Insights from the plankton. HARMFUL ALGAE 2019; 86:20-36. [PMID: 31358274 DOI: 10.1016/j.hal.2019.03.003] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2018] [Revised: 03/08/2019] [Accepted: 03/08/2019] [Indexed: 06/10/2023]
Abstract
The benthic genus Ostreopsis contains toxic-bloom forming species and is an important cause of concern in warm-temperate and tropical waters. On the coast of Portugal, NE Atlantic, the occurrence of Ostreopsis cf. siamensis and Ostreopsis cf. ovata has been reported since 2008 and 2011, respectively. This work aims to understand the favorable conditions for high concentrations of Ostreopsis cells in the plankton at two sites, Lagos and Lisbon Bays, located in the South and West coast of Portugal, respectively. This study is based on weekly Ostreopsis abundance data in the plankton, from 2011 to 2017, daily satellite and in situ sea surface temperature (SST), and meteorological and sea state parameters, namely wind stress and significant wave height. The molecular identification of local Ostreopsis spp. is also presented. The maximum cell densities occur between late-summer and autumn. The distribution range of Ostreopsis cf. ovata is restricted to the South coast, while Ostreopsis cf. siamensis has a wider distribution range, being also present on the West coast. In the study period, there was only one occurrence of Ostreopsis spp., in Lagos Bay, with concentrations within the alert phase of monitoring. In Lagos Bay, high Ostreopsis spp. concentrations were related with positive SST anomalies. These high concentrations were often recorded after a period of almost 2-weeks to more than 4-weeks of low sea state (<0.6 m), followed by short time events of onshore wind and moderate waves (0.6-1 m). The former conditions are interpreted as favoring bloom development on the substrate and the latter as causing the re-suspension of Ostreopsis cells in the water column. In Lisbon Bay, O. cf. siamensis occurred in the plankton in few occasions and no clear relation could be established with the studied environmental variables. It is here hypothesized that the recent records of O. cf. siamensis in Lisbon Bay may correspond to an early colonization stage of an invasion process. Knowledge gained on Ostreopsis dynamics along the Portuguese coast can be used for both the improvement of benthic harmful algal blooms (BHABs) monitoring in the region and as a basis to design forecasting models.
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Affiliation(s)
- Mariana Santos
- IPMA, I.P. - Instituto Português do Mar e da Atmosfera, Rua Alfredo Magalhães Ramalho, 6, 1495-006 Lisbon, Portugal; MARE - Centro de Ciências do Mar e do Ambiente, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1749-016 Lisbon, Portugal.
| | - Paulo B Oliveira
- IPMA, I.P. - Instituto Português do Mar e da Atmosfera, Rua Alfredo Magalhães Ramalho, 6, 1495-006 Lisbon, Portugal.
| | - Maria Teresa Moita
- IPMA, I.P. - Instituto Português do Mar e da Atmosfera, Rua Alfredo Magalhães Ramalho, 6, 1495-006 Lisbon, Portugal; CCMAR - Centro de Ciências do Mar, Universidade do Algarve, Campus de Gambelas, 8005-139 Faro, Portugal.
| | - Helena David
- MARE - Centro de Ciências do Mar e do Ambiente, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1749-016 Lisbon, Portugal; Departamento de Biologia Vegetal, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1749-016 Lisbon, Portugal.
| | - Maria Filomena Caeiro
- Departamento de Biologia Vegetal, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1749-016 Lisbon, Portugal; Centro de Estudos do Ambiente e do Mar (CESAM), Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1749-016 Lisbon, Portugal.
| | - Adriana Zingone
- SZN - Stazione Zoologica Anton Dohrn, Villa Comunale, 80121 Naples, Italy.
| | - Ana Amorim
- MARE - Centro de Ciências do Mar e do Ambiente, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1749-016 Lisbon, Portugal; Departamento de Biologia Vegetal, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1749-016 Lisbon, Portugal.
| | - Alexandra Silva
- IPMA, I.P. - Instituto Português do Mar e da Atmosfera, Rua Alfredo Magalhães Ramalho, 6, 1495-006 Lisbon, Portugal; CCMAR - Centro de Ciências do Mar, Universidade do Algarve, Campus de Gambelas, 8005-139 Faro, Portugal.
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11
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Boisnoir A, Pascal PY, Cordonnier S, Lemée R. Spatio-temporal dynamics and biotic substrate preferences of benthic dinoflagellates in the Lesser Antilles, Caribbean sea. HARMFUL ALGAE 2019; 81:18-29. [PMID: 30638495 DOI: 10.1016/j.hal.2018.11.012] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2018] [Revised: 11/18/2018] [Accepted: 11/21/2018] [Indexed: 06/09/2023]
Abstract
Epibenthic dinoflagellates were monitored monthly over an 18 month period in Guadeloupe and Martinique (Lesser Antilles, Caribbean Sea). These islands are located in the second most affected ciguatera fish poisoning (CFP) region of the world. Guadeloupe presented five times more total epibenthic dinoflagellates and two times less abundant Gambierdiscus spp. compared to Martinique, although the area of frequent CFP outbreaks covers Guadeloupe and not Martinique. Results did not show any clear seasonal variations of benthic dinoflagellates abundances. Temperature and salinity were not driving parameters in the evolution of total benthic dinoflagellate abundances. Preferential associations were found between macrophyte species and epibenthic dinoflagellates. The Phaeophyceae Dictyota spp. hosted the highest abundances of total epibenthic dinoflagellates, composed mainly of Ostrepsis and Prorocentrum genera. The seagrass Halophila stipulacea hosted the highest abundances of Gambierdiscus spp. and Sinophysis spp. whilst the highest abundance of Coolia was determined on Galaxaura spp. The pelagic Sargassum spp. hosted the lowest abundances of benthic dinoflagellates including the genus Gambierdiscus.
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Affiliation(s)
- Aurélie Boisnoir
- Institut de Systématique, Évolution, Biodiversité, ISYEB, UMR 7205, Université des Antilles. Équipe Biologie de la mangrove. UFR SEN. 97100 Pointe-à-Pitre. France; Sorbonne Université, CNRS, Laboratoire d'Océanographie de Villefranche, LOV, F-06230 Villefranche-sur-Mer, France.
| | - Pierre-Yves Pascal
- Institut de Systématique, Évolution, Biodiversité, ISYEB, UMR 7205, Université des Antilles. Équipe Biologie de la mangrove. UFR SEN. 97100 Pointe-à-Pitre. France
| | - Sébastien Cordonnier
- Institut de Systématique, Évolution, Biodiversité, ISYEB, UMR 7205, Université des Antilles. Équipe Biologie de la mangrove. UFR SEN. 97100 Pointe-à-Pitre. France
| | - Rodolphe Lemée
- Sorbonne Université, CNRS, Laboratoire d'Océanographie de Villefranche, LOV, F-06230 Villefranche-sur-Mer, France
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