Depth distribution of benthic dinoflagellates in the Caribbean Sea

Boisnoir, Aurélie; Pascal, Pierre Yves; Cordonnier, Sébastien; Lemee, R.

doi:10.1016/j.seares.2018.02.001

Cited by 24 publications

(17 citation statements)

References 94 publications

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“…As consequence, the taxonomic composition of epiphytic dinoflagellates cannot be unequivocally determined by using the standard methodology (rough morphometric discrimination), and for purposes of practicality and comparability it is necessary to work with this "schematic" community. The taxonomic composition of the epiphytic dinoflagellate community on the surveyed algae of this study is quite similar to those reported in similar studies in the Caribbean (Morton and Faust, 1997;Delgado et al, 2006;Boisnoir et al, 2018) and other regions of the North Atlantic like the south of the Gulf of Mexico (Okolodkov et al, 2007(Okolodkov et al, , 2014 or Florida (Bomber et al, 1989) and even in the Pacific (Parsons and Preskitt, 2007;Richlen and Lobel, 2011) although each species (or genus) did not contribute in the same proportion to the total abundance. For example, Delgado et al (2006) found that P. lima and G. toxicus were more abundant than O. lenticularis and C. monotis, whereas Boisnoir et al (2018) reported that Ostreopsis spp.…”

Section: Taxonomic Composition Of Epiphytic Dinoflagellatessupporting

confidence: 89%

“…In addition, O. marina presents habitat separation with Prorocentrum and Gambierdiscus. A negative correlation between Ostreopsis and Prorocentrum was reported by Richlen and Lobel (2011) in the Pacific, but Boisnoir et al (2018) found the contrary in the Eastern Caribbean. Also, the habitat separation between Gambierdiscus and Ostreopsis has been reported by Bomber et al (1989) in Florida, but in the Caribbean, Ballantine et al (1988) did not find evidence of correlation between these genera.…”

Section: Community Structure On Dictyota and Amphiroamentioning

confidence: 84%

“…Also, the habitat separation between Gambierdiscus and Ostreopsis has been reported by Bomber et al (1989) in Florida, but in the Caribbean, Ballantine et al (1988) did not find evidence of correlation between these genera. The dominance of Ostreopsis over the other genera of dinoflagellates could be related to its preference to sites with little water motion, as these are shallow sites (Richlen and Lobel, 2011;Cohu et al, 2013;Boisnoir et al, 2018) The Effect of Environment on the Population Dynamics…”

Section: Community Structure On Dictyota and Amphiroamentioning

confidence: 99%

“…Most research has focused on the environmental variability and host-epiphytic dynamics through the analysis of the experimental responses of benthic dinoflagellates to variations of temperature, irradiance, nutrient concentration and salinity (Bomber et al, 1988;Chinain et al, 1999;Hales et al, 1999;Anderson et al, 2008;Lartigue et al, 2009;Kibler et al, 2015), as well as the substrate preference of some dinoflagellate species (Lobel et al, 1988;Bomber et al, 1989;Nakahara et al, 1996;Parsons and Preskitt, 2007;Parsons et al, 2011;Rains and Parsons, 2015), and the monitoring of dinoflagellate abundance on several substrates and macroalgae (Morton and Faust, 1997;Vila et al, 2001;Okolodkov et al, 2007Okolodkov et al, , 2014Moreira et al, 2012;Cohu et al, 2013). Also, other features such as depth, the water motion and habitat structure have been studied in relation to abundance and occurrence of the benthic dinoflagellates (Richlen and Lobel, 2011;Cohu et al, 2013;Boisnoir et al, 2018;Yong et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

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Population Dynamics of Benthic-Epiphytic Dinoflagellates on Two Macroalgae From Coral Reef Systems of the Northern Mexican Caribbean

et al. 2018

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In the present study the abundance of epiphytic dinoflagellates was evaluated at two coral reef sites of the natural protected areas, Arrecife de Puerto Morelos and Isla Contoy, located in the northern Mesoamerican Reef System of the Mexican Caribbean. Abundances were monitored from April to December, 2015 on two genera of macroalga belonging to different functional groups: Dictyota and Amphiroa. In general, the total abundance of dinoflagellates was higher in Puerto Morelos on both macroalgae. Ostreopsis cf. marina and O. heptagona were the dominant species. Relative abundance of these species varied from 8 to 99% of total epiphytic dinoflagellates. Maximum abundances at Puerto Morelos were registered in April, with 33,801 cells•g −1 on Dictyota and 6,264 cells•g −1 on Amphiroa. In Isla Contoy the maximum abundance was 16,006 cells•g −1 and it was detected on Dictyota during December. Other dinoflagellate genera were more abundant during the warmer period (May-September) in both locations. Prorocentrum was the second most abundant genus and was represented by six species (P. hoffmannianum, P. lima, P. belizeanum, P. elegans, P. emarginatum, and P. rathymum). The maximum pooled abundance of Prorocentrum species was 4,144 cells•g −1 on Dictyota in August. Coolia spp. did not reach abundances higher than 1,000 cells•g −1 and Gambierdiscus spp. only exceeded 100 cells•g −1 during August. Mean water temperature in Isla Contoy was significantly lower than that of Puerto Morelos during the entire study period. There was a negative correlation between the water temperature and the abundance of O. cf. marina. The dominance of Ostreopsis in the Caribbean is significant because of its capability to produce palytoxin analogs and its potential role in ciguatera fish poisoning outbreaks in the region. This is the first study that reports blooms of Ostreopsis in Mexican Caribbean coral reefs, a fact that emphasizes the significance of this genus at global scale.

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Section: Taxonomic Composition Of Epiphytic Dinoflagellatessupporting

confidence: 89%

Section: Community Structure On Dictyota and Amphiroamentioning

confidence: 84%

Section: Community Structure On Dictyota and Amphiroamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Population Dynamics of Benthic-Epiphytic Dinoflagellates on Two Macroalgae From Coral Reef Systems of the Northern Mexican Caribbean

et al. 2018

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“…Among the plethora of benthic dinoflagellates, several species collected primarily from seagrasses and macroalgal substrates are known to produce potent biotoxins (Boisnoir et al, 2018). In fact, as a proportion of the described taxa of free-living marine dinoflagellates, epiphytic and sand-dwelling species are heavily represented among known toxigenic genotypes.…”

Section: Ocean Environment Human Health and Socio-economic Consequencesmentioning

confidence: 99%

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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Ostreopsis cf. ovata abundances on different benthic substrata: how to compare them?

Accoroni,

Neri,

Ubaldi

et al. 2023

Mar Biol

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In the framework of benthic harmful algal bloom monitoring, the most common sampling strategy is based on the collection of macroalgae, and the abundance of epiphytic microalgae are mainly expressed as cells g−1 macroalgal fresh weight (fw). However, this methodology has some inherent problems, due to (i) the thallus-specific weights that markedly differ among algal species, (ii) the thallus architecture, and (iii) the production of allelopathic compounds that affects the epiphyte abundances among macroalgae, irrespective of the available colonizable surface. This study proposes a method to compare the abundances of Ostreopsis cf. ovata cells on different substrata, using a conversion factor that converts the abundances expressed as cells g−1 fw (or dry weight) to cells cm−2. Expressing abundances in terms of cells cm−2, the abundances can be compared (i) among different macroalgal species and (ii) between macroalgae and other substrata (such as rocks, pebbles, or shellfish shells). We also propose to normalize abundances when different macroalgae are sampled throughout the bloom period, considering the different epiphyte loads of different macroalgal species regardless of the available surface area.

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Depth distribution of benthic dinoflagellates in the Caribbean Sea

Cited by 24 publications

References 94 publications

Population Dynamics of Benthic-Epiphytic Dinoflagellates on Two Macroalgae From Coral Reef Systems of the Northern Mexican Caribbean

Population Dynamics of Benthic-Epiphytic Dinoflagellates on Two Macroalgae From Coral Reef Systems of the Northern Mexican Caribbean

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

Ostreopsis cf. ovata abundances on different benthic substrata: how to compare them?

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