CobaltMaghrebV1, Main, Exploration, bibRecord, 000349

The globally distributed genus Alexandrium: multifaceted roles in marine ecosystems and impacts on human health

Identifieur interne : 000349 ( Main/Exploration ); précédent : 000348; suivant : 000350

The globally distributed genus Alexandrium: multifaceted roles in marine ecosystems and impacts on human health

Auteurs : Donald M. Anderson [États-Unis] ; Tilman J. Alpermann [Allemagne] ; Allan D. Cembella [Allemagne] ; Yves Collos [France] ; Estelle Masseret [France] ; Marina Montresor [Italie]

Source :

Harmful algae [ 1568-9883 ] ; 2012.

RBID : PMC:3269821

Abstract

The dinoflagellate genus Alexandrium is one of the major harmful algal bloom (HAB) genera with respect to the diversity, magnitude and consequences of blooms. The ability of Alexandrium to colonize multiple habitats and to persist over large regions through time is testimony to the adaptability and resilience of this group of species. Three different families of toxins, as well as an as yet incompletely characterized suite of allelochemicals are produced among Alexandrium species. Nutritional strategies are equally diverse, including the ability to utilize a range of inorganic and organic nutrient sources, and feeding by ingestion of other organisms. Many Alexandrium species have complex life histories that include sexuality and often, but not always, cyst formation, which is characteristic of a meroplanktonic life strategy and offers considerable ecological advantages. Due to the public health and ecosystem impacts of Alexandrium blooms, the genus has been extensively studied, and there exists a broad knowledge base that ranges from taxonomy and phylogeny through genomics and toxin biosynthesis to bloom dynamics and modeling. Here we present a review of the genus Alexandrium, focusing on the major toxic and otherwise harmful species.

Url:

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3269821

DOI: 10.1016/j.hal.2011.10.012
PubMed: 22308102
PubMed Central: 3269821

Affiliations:

Le document en format XML

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<front><div type="abstract" xml:lang="en"><p id="P2">The dinoflagellate genus <italic>Alexandrium</italic>
 is one of the major harmful algal bloom (HAB) genera with respect to the diversity, magnitude and consequences of blooms. The ability of <italic>Alexandrium</italic>
 to colonize multiple habitats and to persist over large regions through time is testimony to the adaptability and resilience of this group of species. Three different families of toxins, as well as an as yet incompletely characterized suite of allelochemicals are produced among <italic>Alexandrium</italic>
 species. Nutritional strategies are equally diverse, including the ability to utilize a range of inorganic and organic nutrient sources, and feeding by ingestion of other organisms. Many <italic>Alexandrium</italic>
 species have complex life histories that include sexuality and often, but not always, cyst formation, which is characteristic of a meroplanktonic life strategy and offers considerable ecological advantages. Due to the public health and ecosystem impacts of <italic>Alexandrium</italic>
 blooms, the genus has been extensively studied, and there exists a broad knowledge base that ranges from taxonomy and phylogeny through genomics and toxin biosynthesis to bloom dynamics and modeling. Here we present a review of the genus <italic>Alexandrium</italic>
, focusing on the major toxic and otherwise harmful species.</p>
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The globally distributed genus Alexandrium: multifaceted roles in marine ecosystems and impacts on human health

The globally distributed genus Alexandrium: multifaceted roles in marine ecosystems and impacts on human health

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