First evidence of <i>Ostreopsis</i> cf. <i>ovata</i> in the eastern tropical Pacific Ocean, Ecuadorian coast

Carnicer, Olga; García‐Altares, María; Andrée, Karl B.; Diogène, Jorge; Fernández-Tejedor, Margarita

doi:10.1515/bot-2016-0022

Cited by 12 publications

(13 citation statements)

References 40 publications

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“…The first evidence of O. cf. ovata in the eastern tropical Pacific Ocean was provided from the Ecuadorian coast at Estero del Plátano (Esmeraldas Province) and Playa Mateo (Manabí Province) and multiple isolates have been successfully cultured from the region (Carnicer et al, 2016). Recently, a study from the Galapagos Marine Reserve and the Marine Reserve of Galera de San Francisco, in Ecuador, reported the genus Ostreopsis as a common inhabitant in both places, showing a great abundance and diversity of species in the Galapagos.…”

Section: Eastern Pacific Coast Of Latin Americamentioning

confidence: 99%

“…Currently, three genetic clades of Ostreopsis cf. ovata have been shown to occur in overlapping geographical areas (Penna et al, 2005), and several different toxicity patterns have been described (Carnicer et al, 2016). In this investigation, thirteen isolates from the coast of Ecuador in the eastern Pacific Ocean, including a geographical area from which no information existed, were analyzed for Ostreopsis genotypes and toxicity of the O. cf.…”

Section: Molecular Genetic Approaches To Taxonomy and Phylogenetic Rementioning

confidence: 99%

“…Isolates of the O. cf. ovata complex from the coast of Ecuador were judged to be nontoxic according to hemolytic cell assays, and the absence of PLTX-like compounds was confirmed by liquid chromatographymass spectrometry (LC-MS/MS) (Carnicer et al, 2016). Whether lack of human toxic events associated with Ostreopsis in Latin America is primarily due to the relatively low magnitude of the blooms, hydrodynamic factors associated with aerosol formation, lack of human exposure in bHABs affected areas or to the non-toxigenicity of local populations remains to be established.…”

Section: Determination Of Toxin Composition Occurrence and Associatementioning

confidence: 99%

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A Review on the Biodiversity and Biogeography of Toxigenic Benthic Marine Dinoflagellates of the Coasts of Latin America

2019

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Many benthic dinoflagellates are known or suspected producers of lipophilic polyether phycotoxins, particularly in tropical and subtropical coastal zones. These toxins are responsible for diverse intoxication events of marine fauna and human consumers of seafood, but most notably in humans, they cause toxin syndromes known as diarrhetic shellfish poisoning (DSP) and ciguatera fish poisoning (CFP). This has led to enhanced, but still insufficient, efforts to describe benthic dinoflagellate taxa using morphological and molecular approaches. For example, recently published information on epibenthic dinoflagellates from Mexican coastal waters includes about 45 species from 15 genera, but many have only been tentatively identified to the species level, with fewer still confirmed by molecular criteria. This review on the biodiversity and biogeography of known or putatively toxigenic benthic species in Latin America, restricts the geographical scope to the neritic zones of the North and South American continents, including adjacent islands and coral reefs. The focus is on species from subtropical and tropical waters, primarily within the genera Prorocentrum, Gambierdiscus/Fukuyoa, Coolia, Ostreopsis and Amphidinium. The state of knowledge on reported taxa in these waters is inadequate and time-series data are generally lacking for the prediction of regime shift and global change effects. Details of their respective toxigenicity and toxin composition have only recently been explored in a few locations. Nevertheless, by describing the specific ecosystem habitats for toxigenic benthic dinoflagellates, and by comparing those among the three key regions-the Gulf of Mexico, Caribbean Sea and the subtropical and tropical Pacific coast, insights for further risk assessment of the global spreading of toxic benthic species is generated for the management of their effects in Latin America.

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Section: Eastern Pacific Coast Of Latin Americamentioning

confidence: 99%

Section: Molecular Genetic Approaches To Taxonomy and Phylogenetic Rementioning

confidence: 99%

Section: Determination Of Toxin Composition Occurrence and Associatementioning

confidence: 99%

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A Review on the Biodiversity and Biogeography of Toxigenic Benthic Marine Dinoflagellates of the Coasts of Latin America

2019

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“…In that sense, some of the taxa found in the area were not identified at species level. Dinoflagellates identification under inverted microscope based on morphological features constitutes a challenge since some species from several genera share the same plate pattern and overlap in size (e.g., the genus Ostreopsis - Carnicer et al, 2016). In the last decades, molecular techniques have allowed to perform accurate identifications in dinoflagellates using rDNA sequences (Litaker et al, 2007).…”

Section: Dinoflagellate Communitymentioning

confidence: 99%

“…Unfortunately, there is no molecular characterization of marine dinoflagellates in the Ecuadorian coasts, with the exception of Ostreopsis cf. ovata (Carnicer et al, 2016). It is important for Ecuadorian institutions to invest in the implementation of molecular techniques for future investigations, especially important to identify potentially toxic species.…”

Section: Dinoflagellate Communitymentioning

confidence: 99%

Spatio-Temporal Pattern of Dinoflagellates Along the Tropical Eastern Pacific Coast (Ecuador)

et al. 2019

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Among marine phytoplankton, dinoflagellates are a key component in marine ecosystems as primary producers. Some species synthesize toxins, associated with human seafood poisoning, and mortality in marine organisms. Thus, there is a large necessity to understand the role of environmental variables in dinoflagellates spatialtemporal patterns in response to future climate scenarios. In that sense, a monthly four-year (2013-2017) monitoring was taken to evaluate dinoflagellates abundances and physical-chemical parameters in the water column at different depths. Sampling sites were established at 10 miles in four locations within the Ecuadorian coast. A total of 102 taxa were identified, corresponding to 8 orders, 22 families, and 31 genera. Eight potentially harmful genera were registered but no massive blooms were detected. The most frequent dinoflagellates were Gymnodinium sp. and Gyrodinium sp. Environmental variables showed different mixing layer thickness and a conspicuous and deepening thermocline/oxycline/halocline and nutricline depending on annual and seasonal oceanographic fluctuations. This study confirms that seasonal and spatial distribution of the environmental variables are linked to the main current systems on the Eastern Tropical Pacific, thus the warm Panama current lead to a less dinoflagellates abundance in the north of Ecuador (Esmeraldas), while the Equatorial Upwelling and the cold nutrient-rich Humboldt Current influence dinoflagellates abundance at the central (Manta, La Libertad) and South of Ecuador (Puerto Bolivar), respectively. Interannual variability of dinoflagellates abundance is associated with ENSO and upwelling conditions. Climate change scenarios predict an increase in water surface temperature and extreme events frequency in tropical areas, so it is crucial to involve policy-makers and stakeholders in the implementation of future laws involving long-term monitoring and sanitary programs, not covered at present.

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Climate change and harmful benthic microalgae

2020

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First evidence of Ostreopsis cf. ovata in the eastern tropical Pacific Ocean, Ecuadorian coast

Abstract: Abstractcf.

Cited by 12 publications

References 40 publications

A Review on the Biodiversity and Biogeography of Toxigenic Benthic Marine Dinoflagellates of the Coasts of Latin America

A Review on the Biodiversity and Biogeography of Toxigenic Benthic Marine Dinoflagellates of the Coasts of Latin America

Spatio-Temporal Pattern of Dinoflagellates Along the Tropical Eastern Pacific Coast (Ecuador)

Climate change and harmful benthic microalgae

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