A comparative study of <i>Sargassum</i> species from the Yucatan Peninsula coast: morphological and chemical characterisation

Rosado-Espinosa, Luis Alberto; Freile‐Pelegrín, Yolanda; Hernández-Nuñéz, Emanuel; Robledo, Daniel

doi:10.1080/00318884.2020.1738194

Cited by 33 publications

(25 citation statements)

References 36 publications

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“…Littler and Littler [59] also indicated few or no cryptostomatas. We did not observe cryptostomatas in Mexican material, as was also found in other studies of Caribbean material [66,67]. Another characteristic that coincides with [50,59] is the prominent midrib of the blades of the specimen in the MEXU herbarium (Figures 3A-C).…”

Section: Homotypic Synonymsupporting

confidence: 90%

A Natural History of Floating Sargassum Species (Sargasso) from Mexico

Godínez-Ortega¹,

Cuatlán-Cortés²,

Lopez-Bautista³

et al. 2021

Natural History and Ecology of Mexico and Central America

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For at least several centuries, sargasso has inhabited the Atlantic Ocean, and there are historical records of these algae reaching the Mexican Veracruz State in the Gulf of Mexico. Blooming of sargasso in the southern tropical Atlantic is a current a global problem from Africa to the Greater Caribbean. Since 2015, exceptionally large quantities of sargasso have been arriving intermittently on the Mexican Caribbean coast, affecting coastal ecosystems and tourist beaches. Sargasso includes two holopelagic species, Sargassum natans and S. fluitans, with several varieties. There are no records of sexual reproduction in these species, and the algae are thought to spread exclusively by clonal reproduction by fragmentation. Although sargasso seaweeds have grown in the Sargasso Sea for centuries; they have not been well studied. This chapter deals with historical aspects of these algae, their taxonomic and morphological characteristics, distribution, ecology, and practical uses. Sargasso blooms in the central Atlantic started in 2011. In later years, the bloom developed to extend from West Africa, Brazil, and the Great Caribbean, including West-Indies, Mexico, and the Gulf of Mexico. The pelagic sargasso is a global phenomenon that must be understood by integrating natural history, modern biology, social and economic aspects.

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Section: Homotypic Synonymsupporting

confidence: 90%

A Natural History of Floating Sargassum Species (Sargasso) from Mexico

Godínez-Ortega¹,

Cuatlán-Cortés²,

Lopez-Bautista³

et al. 2021

Natural History and Ecology of Mexico and Central America

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“…Samples were taxonomically identified using morphological features described for Sargassum commonly used in identification keys according to Rosado‐Espinosa et al. (2020).…”

Section: Methodsmentioning

confidence: 99%

NMR Metabolic Profiling of Sargassum Species Under Different Stabilization/Extraction Processes

Hernández-Bolio¹,

Fagundo-Mollineda²,

Caamal-Fuentes³

et al. 2021

Journal of Phycology

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The genus Sargassum is well represented by benthic and pelagic species, some of which form massive aggregates that can travel long distances due to the force of the ocean currents. Although they constitute an essential habitat for fish and invertebrate species, large accumulations of Sargassum in coastal areas generate several economic, environmental, and health impacts. It is important to recognize the species forming these aggregates, and identify the metabolites they produce, allowing for its exploitation, and therefore, better management practices. NMR metabolic profiling is a technique that can discriminate samples while detecting their unique or differential chemical features, and has been successfully used in the study and classification of several algal species. The present investigation studied the metabolic profiling of Sargassum species found on strandings at Puerto Morelos (Quintana Roo) east coast of the Mexican Caribbean. PCA of the 1H‐NMR profiles corresponding to S. natans, S. natans (morphotype VIII), S. fluitans, and a benthic Sargassum buxifolium allowed the discrimination of samples amongst them. Furthermore, discrimination between the two forms of S. natans was also possible. The PCA loading plot revealed that glutamine and glutamate have the highest influence in the clustering of the benthic Sargassum, while a high abundance of lactate, Myo‐inositol, and trimethylamine is a unique feature from the S. natans morphotype VIII. Additional PLS‐DA models showed that a heat‐drying process improved the extraction of metabolites. Maceration and microwave‐assisted extraction with water‐ethanol led to similar profiles and thus any of them could be used in future investigations.

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“…The great variability of morphological characteristics between individuals of the same species or even in the same individual in response to climatic and environmental conditions (Kilar et al, 1992) complicates the delineation and identification of Sargassum species in the Atlantic (Parr, 1939;Mattio and Payri, 2011;Schell et al, 2015). Therefore, studies in recent years have included molecular and biochemical characters (Amaral-Zettler et al, 2017;González-Nieto et al, 2020;Rosado-Espinosa et al, 2020;Hernández-Bolio et al, 2021). Nevertheless, molecular markers (ITS, psaA, RuBisCO spacer, rbcl, COI, cox3, 23S-tRNA val spacer and partial mt23S) are not conclusive and the taxonomy of the group needs further analysis (Stiger et al, 2003;Mattio and Payri, 2011;Amaral-Zettler et al, 2017;González-Nieto et al, 2020).…”

Section: Sargassum Species In the Caribbean Eventsmentioning

confidence: 99%

“…The basic chemical composition of stranded Sargassum biomass from the Mexican Caribbean is shown in Figure 3; however, these values may vary depending on several factors including species, seasonality and extraction methods (Rosado-Espinosa et al, 2020;Terme et al, 2020). Care must be taken to consider the level of degradation of Sargassum spp.…”

Section: Valorization and Management Of Sargassum Biomass: Opportunitiesmentioning

confidence: 99%

Challenges and Opportunities in Relation to Sargassum Events Along the Caribbean Sea

et al. 2021

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Mass blooms and stranding of pelagic Sargassum spp. in the Atlantic, termed Sargassum events are becoming more frequent in response to several factors: nutrient enrichment, increased temperature, changes in climatological patterns, but some causes remain unknown. The magnitude of Sargassum events in the Caribbean Sea since 2011 make us aware of the necessity to tackle these events, and macroalgal blooms generally, not only locally but on a regional scale. At least three pelagic species of Sargassum have been dominant in the blooms that have occurred along Caribbean coastlines in great quantities. Due to the regional scale of these events and its complexity, its management should be based on basic and applied information generated by different collaborative actors (national and international) through interdisciplinary and transdisciplinary work. To address this, we propose different phases (exploratory, valorization, and management) and the approach for their study should include detection, collection, stabilization and experimentation. This information will help identify the potential applications and/or ecological services to develop for the exploitation and mitigation strategies in the region. Relevant challenges and opportunities are discussed, remarking on the necessity to evaluate the spatiotemporal variation in the abundance and chemical composition of floating and stranded biomass. The above-mentioned will provide management strategies and economic opportunities as possible solutions to their extensive impact in the Caribbean.

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A comparative study of Sargassum species from the Yucatan Peninsula coast: morphological and chemical characterisation

Cited by 33 publications

References 36 publications

A Natural History of Floating Sargassum Species (Sargasso) from Mexico

A Natural History of Floating Sargassum Species (Sargasso) from Mexico

NMR Metabolic Profiling of Sargassum Species Under Different Stabilization/Extraction Processes

Challenges and Opportunities in Relation to Sargassum Events Along the Caribbean Sea

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