Data/hora: 06/06/2024 02:41:30

Provedor de dados: | Institutional Archive of Ifreme (ArchiMer)
País: | France

Título:

Réponses écophysiologiques des espèces toxiques de Pseudo-nitzschia aux variations environnementales liées au changement climatique

Ecophysiological responses of Pseudo-nitzschia toxic species to environmental variations related to climate change

Autores: | Ayache, Nour.
Data: | 2018-12-06
Ano: | 2018
Palavras-chave: | Acide domoïque; Changement climatique; Écophysiologie; Pseudo-nitzschia; Amnesic shellfish poisoning; Climate change; Domoic acid; Ecophysiology; Pseudo-nitzschia.
Resumo: | The diatom Pseudo-nitzschia includes certain toxic species capable of producing domoic acid (DA), an amnesic neurotoxin. The proliferation of these toxic species presents many risks ranging from serious ecological and economic damage to threats to public health. Problems related to these proliferations are increasing worldwide and the need for scientist to better understand the environmental factors influencing the appearance of these blooms is more necessary than ever. In this context, several species and strains of Pseudo-nitzschia have been studied to better understand and predict their physiological responses to future climate change. In particular, the experiments carried out allowed to explore the impact of salinity variations and ocean acidification (decrease of pH) on the growth, photosynthesis and DA production by several Pseudo-nitzschia species and strains. The results obtained showed that Pseudo-nitzschia species are flexible, able to adapt, proliferate and produce toxins under varying conditions of salinity and pH, despite the large diversity of responses depending on the strains or species studied. These results made it possible to determine the influence and acclimation capacities of Pseudo-nitzschia cells facing future environmental conditions (pH, salinity). Thus, the work carried out represents a contribution to the advancement of knowledge on the ecophysiology and toxin production by Pseudo-nitzschia species.
Tipo: | Text
Idioma: | Francês

Identificador:

https://archimer.ifremer.fr/doc/00478/58969/61573.pdf

https://archimer.ifremer.fr/doc/00478/58969/

Editor: | Université de Nantes
Formato: | application/pdf

Fonte:

info:eu-repo/semantics/openAccess

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