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Journal articles on the topic 'Ostreopsis spp'

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Published: 25 May 2024

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1

ISMAEL, A., and Y. HALIM. "Potentially harmful Ostreopsis spp. in the coastal waters of Alexandria - Egypt." Mediterranean Marine Science 13, no. 2 (September 7, 2012): 208. http://dx.doi.org/10.12681/mms.300.

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Ostreopsis spp. has been reported for the first time from the Egyptian Mediterranean waters. Macroalgal samples were collected monthly between June 2005 and December 2007, from the rocks at Abu Qir, from less than 1.5 m depth, and their associated microalgae examined. Populations of two Ostreopsis morphotypes were found to occur in this location, east of Alexandria, viz., O. cf ovata Fukuyo and Ostreopsis morph1. The Ostreopsis spp. was abundant and dominant during the summer. They were more abundant as epiphytes of the brown algae Padina sp. and Sargassum sp., less abundant on the red algae Corallina sp., Jania sp., Laurencia sp. and even less so on the green algae Ulva spp. Ostreopsis cf. ovata was also identified during the summer months on the same macroalgal species, although in a much lower abundance. Ostreopsis spp. alternated in dominance with the benthic cyanobacteria Oscillatoria spp. and the diatom Licmophora sp. Other benthic dinoflagellates recorded at low abundance included Amphidinium carterae, Gymnodinium sp. and Prorocentrum lima.
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2

Tan, Toh-Hii, Po-Teen Lim, Aazani Mujahid, Gires Usup, and Chui-Pin Leaw. "BENTHIC HARMFUL DINOFLAGELLATE ASSEMBLAGES IN A FRINGING REEF OF SAMPADI ISLAND, SARAWAK, MALAYSIA." Marine Research in Indonesia 38, no. 2 (April 7, 2015): 77–87. http://dx.doi.org/10.14203/mri.v38i2.59.

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A study on the presence and relative abundance of benthic harmful algal bloom (BHAB) forming dinoflagellate species was carried out in the coral reefs of Sampadi Island, Sarawak, Malaysia. The study involved deployment of fiberglass screens as an artificial substrate for the benthic epiphytic microalgae. The screens were placed for 24 h above the seafloor along a 100 m transect at 10 m intervals. BHAB species attached to the screens were identified and cell abundances were enumerated under a light microscope. The BHAB community at the study site was dominated by Prorocentrum spp. and Coolia spp. Other BHAB species collected included Amphidinium spp., Gambierdiscus spp. and Ostreopsis spp. Total cell densities collected on the screens ranged from 5 to 100 cells per 100 cm2. The two BHAB groups of primary concern, Gambierdiscus spp. and Ostreopsis spp. were detected at relatively low abundances of 0.6–4.2% and 1.8–16% respectively. This study has shown that potentially toxic BHAB species were present in the coral reef and the artificial substrate approach could provide a convenient quantitative method for the collection of clean samples for identification and enumeration purposes.
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3

Monserrat, Margalida, Daniela Catania, Valentina Asnaghi, Mariachiara Chiantore, Rodolphe Lemée, and Luisa Mangialajo. "The role of habitat in the facilitation of Ostreopsis spp. blooms." Harmful Algae 113 (March 2022): 102199. http://dx.doi.org/10.1016/j.hal.2022.102199.

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4

Espiña, Begoña, Eva Cagide, M. Carmen Louzao, Maria M. Fernandez, Mercedes R. Vieytes, Panagiota Katikou, Adriano Villar, David Jaen, Luz Maman, and Luis M. Botana. "Specific and dynamic detection of palytoxins by in vitro microplate assay with human neuroblastoma cells." Bioscience Reports 29, no. 1 (December 10, 2008): 13–23. http://dx.doi.org/10.1042/bsr20080080.

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Palytoxin is one of the most complex and biggest molecules known to show extreme acute toxicity. The dinoflagellate Ostreopsis spp., the producer organism of palytoxin, has been shown to be distributed worldwide, thus making palytoxin an emerging toxin. Rat-derived hepatocytes (Clone 9) and BE (2)-M17 human neuroblastoma cells were used to test palytoxin or palytoxin-like compounds by measuring the cell metabolic rate with Alamar Blue. The dose-dependent decrease in viability was specifically inhibited by ouabain in the case of BE (2)-M17 neuroblastoma cells. This is a functional, dynamic and simple test for palytoxins with high sensitivity (as low as 0.2 ng/ml). This method was useful for toxin detection in Ostreopsis extracts and naturally contaminated mussel samples. A comparative study testing toxic mussel extracts by LC (liquid chromatography)-MS/MS (tandem MS), MBA (mouse bioassay), haemolysis neutralization assay and a cytotoxicity test indicated that our method is suitable for the routine determination and monitoring of palytoxins and palytoxin-like compounds.
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5

Mecozzi, Mauro, Marco Pietroletti, and Andrea Tornambè. "Molecular and structural characteristics in toxic algae cultures of Ostreopsis ovata and Ostreopsis spp. evidenced by FTIR and FTNIR spectroscopy." Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 78, no. 5 (May 2011): 1572–80. http://dx.doi.org/10.1016/j.saa.2011.02.002.

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6

Vassalli, Massimo, Antonella Penna, Francesca Sbrana, Silvia Casabianca, Nikolla Gjeci, Samuela Capellacci, Valentina Asnaghi, et al. "Intercalibration of counting methods for Ostreopsis spp. blooms in the Mediterranean Sea." Ecological Indicators 85 (February 2018): 1092–100. http://dx.doi.org/10.1016/j.ecolind.2017.07.063.

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7

Casabianca, Silvia, Anna Casabianca, Pilar Riobó, José M. Franco, Magda Vila, and Antonella Penna. "Quantification of the Toxic Dinoflagellate Ostreopsis spp. by qPCR Assay in Marine Aerosol." Environmental Science & Technology 47, no. 8 (March 28, 2013): 3788–95. http://dx.doi.org/10.1021/es305018s.

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8

Almada, Eliliane Vasconcelos Corrêa, Wanderson Fernandes de Carvalho, and Silvia Mattos Nascimento. "Investigation of phagotrophy in natural assemblages of the benthic dinoflagellates Ostreopsis, Prorocentrum and Coolia." Brazilian Journal of Oceanography 65, no. 3 (September 2017): 392–99. http://dx.doi.org/10.1590/s1679-87592017140706503.

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Abstract Mixotrophy has been shown to be a common trait among dinoflagellates and its importance in the nutritional ecology of harmful algae has been hypothesized. Benthic harmful species have not been extensively investigated as their planktonic counterparts and there are major gaps in the knowledge of their nutritional strategies. In this study the occurrence of phagotrophy was investigated in natural assemblages of benthic dinoflagellates using epi-fluorescence microscopy with DAPI and LysoSensor staining. The study was conducted at five sites along the coast of Rio de Janeiro that were visited in January, August and December 2010. In total, 1659 dinoflagellate cells were observed. From these, only 0.4% of 1195 Ostreopsis cf. ovata and 2.2% of 134 Coolia spp. cells presented evidence of phagotrophy with vacuoles stained by LysoSensor or a DAPI (4',6-diamidino-2-phenylindole) stained inclusion. Stained vacuoles were not registered in the 330 Prorocentrum spp. cells observed. Few O. cf. ovata cells contained round red inclusions ("red spots") that were not stained either by DAPI or LysoSensor, suggesting that these structures are not ingested prey. The results showed that phagotrophy was not a frequent nutritional strategy in benthic dinoflagellates during the study period.
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9

Berdalet, Elisa, Anne-Sophie Pavaux, Rafael Abós-Herràndiz, Muriel Travers, Gildas Appéré, Magda Vila, Jérémy Thomas, et al. "Environmental, human health and socioeconomic impacts of Ostreopsis spp. Blooms in the NW Mediterranean." Harmful Algae 119 (November 2022): 102320. http://dx.doi.org/10.1016/j.hal.2022.102320.

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10

Yamaguchi, Haruo, Yuko Tanimoto, Takamichi Yoshimatsu, Shinya Sato, Tomohiro Nishimura, Keita Uehara, and Masao Adachi. "Culture method and growth characteristics of marine benthic dinoflagellate Ostreopsis spp. isolated from Japanese coastal waters." Fisheries Science 78, no. 5 (July 7, 2012): 993–1000. http://dx.doi.org/10.1007/s12562-012-0530-4.

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11

Tawong, Wittaya, Takamichi Yoshimatsu, Haruo Yamaguchi, and Masao Adachi. "Effects of temperature, salinity and their interaction on growth of benthic dinoflagellates Ostreopsis spp. from Thailand." Harmful Algae 44 (April 2015): 37–45. http://dx.doi.org/10.1016/j.hal.2015.02.011.

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12

Del Favero, Giorgia, Silvio Sosa, Marco Pelin, Elisabetta D’Orlando, Chiara Florio, Paola Lorenzon, Mark Poli, and Aurelia Tubaro. "Sanitary problems related to the presence of Ostreopsis spp. in the Mediterranean Sea: a multidisciplinary scientific approach." Annali dell'Istituto Superiore di Sanità 48, no. 4 (December 2012): 407–14. http://dx.doi.org/10.4415/ann_12_04_08.

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13

Montojo, Ulysses, Bryan Tanyag, Karl Bryan Perelonia, Flordeliza Cambia, and Naomasa Oshiro. "Ciguatera in the Philippines: Examining Reef Fish Vectors and Its Causative Benthic Dinoflagellates in Visayan and Sibuyan Seas." Philippine Journal of Fisheries 27, no. 1 (July 1, 2020): 19–29. http://dx.doi.org/10.31398/tpjf/27.1.2019a0015.

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Ciguatera Fish Poisoning (CFP) is primarily caused by ingesting reef fishes contaminated with ciguatoxins (CTX) produced by the Gambierdiscus species. The unpredictability of this type of food poisoning poses risks to public health and adversely affecting the fish trade industry. This study aimed to provide useful information on ciguatera in the Philippines. Different reef fish species and host-macroalgae for benthic dinoflagellates were collected in Visayan and Sibuyan Seas. Ciguatoxins were extracted from reef fish samples, and toxicity was determined qualitatively using mouse bioassay. Meanwhile, cell density estimation of toxic benthic dinoflagellates isolated from the host-macroalgae was done through microscopy. It was observed that 4.46% of the total reef fish samples were positive with ciguatoxins. Spatially, Carles, Iloilo in Visayan sea had the highest number of toxic specimens belonging to Epinephelus merra, Lethrinus lentjan, Lutjanus campechanus, Scarus quoyi, Siganus guttatus, and Sphyraena barracuda. Based on data gathered from three sampling sites, fish toxin occurrence is observed to be site-specific. Geographical conditions affect the frequency of toxic samples. Moreover, fish weight is not a good predictor of fish toxicity. For toxic benthic dinoflagellates, Gambierdiscus spp. were observed to have the lowest cell density count among other dinoflagellates averaging 7-115 cells per 100 g macroalgae. On the other hand, Ostreopsis spp. had the highest average cell density of 118-1,455 cells per 100 g macroalgae, followed by Prorocentrum spp. (207-594 cells per 100 g macroalgae). Fish toxicity is directly proportional to the occurrence of benthic dinoflagellates in areas as seen during dry season. Monitoring and management of CFP on identified reef fish vectors and its causative benthic dinoflagellates in the area are necessary to promote food safety and fair trade practice.
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14

Blanfuné, Aurélie, Charles François Boudouresque, Hubert Grossel, and Thierry Thibaut. "Distribution and abundance of Ostreopsis spp. and associated species (Dinophyceae) in the northwestern Mediterranean: the region and the macroalgal substrate matter." Environmental Science and Pollution Research 22, no. 16 (April 23, 2015): 12332–46. http://dx.doi.org/10.1007/s11356-015-4525-4.

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15

Hariganeya, Naohito, Yuko Tanimoto, Haruo Yamaguchi, Tomohiro Nishimura, Wittaya Tawong, Hiroshi Sakanari, Takamichi Yoshimatsu, Shinya Sato, Christina M. Preston, and Masao Adachi. "Quantitative PCR Method for Enumeration of Cells of Cryptic Species of the Toxic Marine Dinoflagellate Ostreopsis spp. in Coastal Waters of Japan." PLoS ONE 8, no. 3 (March 13, 2013): e57627. http://dx.doi.org/10.1371/journal.pone.0057627.

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16

Jauzein, Cécile, Laury Açaf, Stefano Accoroni, Valentina Asnaghi, Anna Fricke, Mohamed Amine Hachani, Marie abboud-Abi Saab, et al. "Optimization of sampling, cell collection and counting for the monitoring of benthic harmful algal blooms: Application to Ostreopsis spp. blooms in the Mediterranean Sea." Ecological Indicators 91 (August 2018): 116–27. http://dx.doi.org/10.1016/j.ecolind.2018.03.089.

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17

Ben Gharbia, Hela, Mohamed Laabir, Abdelouahed Ben Mhamed, Sonia Khadija Maïté Gueroun, Mohamed Néjib Daly Yahia, Habiba Nouri, Charaf M’Rabet, Abdessalem Shili, and Ons Kéfi-Daly Yahia. "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 90 (December 2019): 101704. http://dx.doi.org/10.1016/j.hal.2019.101704.

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18

Paradis, Camille, Nicolas Chomérat, Jules-Antoine Vaucel, Elvire Antajan, Patrice Labes, Marc Rappoport, and Magali Labadie. "Impacts on Human Health Potentially Caused by Exposure to an Unprecedented Ostreopsis spp Bloom in the Bay of Biscay, French Basque Coast." Wilderness & Environmental Medicine, January 28, 2024. http://dx.doi.org/10.1177/10806032231220405.

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Introduction In recent years, climate change and human activity have modified marine biotopes, including the widening distribution of harmful algal blooms (HABs). Bloom events predominated by microalgae of the genus Ostreopsis have been described on the French Mediterranean coast, but in 2021 an unprecedented bloom occurred on the French Basque coast. The objective of this study is to describe the health impact of the Ostreopsis spp bloom that occurred on the French Basque coast in 2021. Methods A historical cohort was conducted, including cases of possible exposure to Ostreopsis spp registered at the Centre Antipoison de Nouvelle-Aquitaine between July 1 and September 30, 2021. Results Of 674 patients with possible toxicity due to Ostreopsis spp, 96.9% had bathed in contaminated waters. Most of them developed respiratory tract symptoms (64.4% of patients). The time to the onset of symptoms was <6 h for 73.6% of 174 short-term (<24 h) exposed patients. The median duration of symptoms was 7.5 days for occupational (e.g., lifeguards and surfing instructors) and 3 days for recreational exposures. There were no severe cases. In total, 3% of the cases were of moderate severity, and 97% were of minor severity, according to the Poisoning Severity Score. Conclusion Toxic reactions caused by Ostreopsis spp are mostly benign. The clinical picture is similar to that described following exposures to Ostreopsis cf. ovata blooms in the Mediterranean area since the end of the 20th century. Ostreopsis spp are present on the Basque coast. The ecological factors promoting its blooms remain to be clarified.
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19

Alfonso A, Botana LM. "Warm Seawater Microalgae: Growth and Toxic Profile of Ostreopsis Spp. from European Coasts." Oceanography: Open Access 01, no. 01 (2013). http://dx.doi.org/10.4172/2332-2632.1000104.

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20

Alkhatib, Houda, Asmae Bennouna, Rachid Abouabdellah, Zouher Amzil, Fabienne Herve, Cyrielle Amour Moussavou-Mouity, Salaheddine Elayoubi, Mohammed Bekkali, and Abdelilah Fahde. "Ostreopsis spp.: Morphology, proliferation and toxic profile in the North-West of Agadir (North Atlantic Ocean)." Regional Studies in Marine Science, October 2022, 102713. http://dx.doi.org/10.1016/j.rsma.2022.102713.

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21

Chiantore, Mariachiara, Valentina Asnaghi, Marie Abboud-Abi Saab, Laury Acaf, Stefano Accoroni, Ali Badreddine, Laura Escalera, et al. "Basin scale variability of Ostreopsis spp. blooms provides evidence of effectiveness of an integrated sampling approach." Harmful Algae, May 2024, 102651. http://dx.doi.org/10.1016/j.hal.2024.102651.

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22

Vargas-Montero, Maribelle, Álvaro Morales, and Jorge Cortés. "Primer informe del género <i>Gambierdiscus</i> (Dinophyceae) y otros dinoflagelados bentónicos en el Parque Nacional Isla del Coco, Costa Rica, Pacífico Tropical Oriental." Revista de Biología Tropical, March 29, 2017, 187–99. http://dx.doi.org/10.15517/rbt.v60i3.28361.

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El Pacífico Tropical Oriental se ha indicado como una región de los océanos libre de ciguatera, una intoxicación que causa serios trastornos gastrointestinales, neurológicos y cardiovasculares, en casos extremos, la muerte. Pero con el presente estudio hemos encontrado una incidencia alta de microalgas bénticas involucradas en la producción de ciguatera en el Parque Nacional Isla del Coco (PNIC), Costa Rica. En campañas oceanográficas realizadas entre el 2006 y el 2011 al PNIC se recolectaron 420 muestras de fitoplancton con el interés de encontrar especies de dinoflagelados bentónicos implicados en la producción de ciguatera. Las muestras se tomaron con red de fitoplancton o mediante buceos, entre los 5 y 30 m de profundidad en zonas de arrecife y por extracción directa de macroalgas. Se encontró a los dinoflagelados Gambierdiscus spp., Coolia tropicales, Coolia cf. areolota, Prorocentrum concavum, Prorocentrum compressum, Amphidinium carterae y Ostreopsis siamensis. Se determinó que la cantidad de dinoflagelados por peso de macroalga era elevada, principalmente para el género Gambierdiscus. Los géneros Ostreopsis y Prorocentrum mostraron tener la mayor distribución en los sitios de colecta. Gambierdiscus es un género productor de ciguatera. Se encontraron dos tamaños diferentes de individuos de Gambierdiscus, Comparando los especímenes de Gambierdiscus encontradas con otros estudios, se concluye que son diferentes a las descritas anteriormente, por lo que podría tratarse de especies nuevas, lo que se confirmará con cultivos y análisis moleculares. Al ser la Isla del Coco un sitio oceánico aislado y en estado de conservación, es un sitio ideal para el estudio de la evolución de especies de fitoplancton marino. Además, el monitoreo a largo plazo es muy importante debido a la variedad de dinoflagelados bentónicos potencialmente tóxicos que habitan en este ecosistema marino. Este es el primer estudio donde se da a conocer la incidencia de dinoflagelados bentónicos implicados en ciguatera para el Pacífico Tropical Oriental.
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23

Ibghi, Mustapha, Mohammed L’bachir El kbiach, Benlahcen Rijal Leblad, Hicham Aboualaalaa, Fabienne Hervé, Manoella Sibat, Adil Chair, et al. "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 194, no. 11 (September 21, 2022). http://dx.doi.org/10.1007/s10661-022-10426-9.

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