Data/hora: 05/06/2024 15:58:07

Provedor de dados: | 5
País: | France
Título: | Dynamics of phytoplankton communities in eutrophying tropical shrimp ponds affected by vibriosis
Autores: | Lemonnier, Hugues; Lantoine, Francois; Courties, Claude; Guillebault, Delphine; Nezan, Elisabeth; Chomerat, Nicolas; Escoubeyrou, Karine; Galinie, Christian; Blockmans, Bernard; Laugier, Thierry.
Data: | 2016-09
Ano: | 2016
Palavras-chave: | Tropical aquaculture pond; Litopenaeus stylirostris; Vibriosis; Eutrophication; Phytoplankton; Harmful algae.
Resumo: | Tropical shrimp aquaculture systems in New Caledonia regularly face major crises resulting from outbreaks of Vibrio infections. Ponds are highly dynamic and challenging environments and display a wide range of trophic conditions. In farms affected by vibriosis, phytoplankton biomass and composition are highly variable. These conditions may promote the development of harmful algae increasing shrimp susceptibility to bacterial infections. Phytoplankton compartment before and during mortality outbreaks was monitored at a shrimp farm that has been regularly and highly impacted by these diseases. Combining information from flow cytometry, microscopy, pigment and phylogenetic analysis, the presence of Picocyanobacteria, Prasinophyceae and Diatomophyceae were detected as dominant phytoplankton groups and Cryptophyceae, Prymnesiophyceae and Dinophyceae as minor components. At the onset of the first shrimp mortalities, Bacillariophyceae increased while Cyanobacteria, Prymnesiophyceae and Dinophyceae decreased in the water column, followed by proliferation of Prasinophyceae. Several taxa were identified as potential harmful algae (Cyanobacteria, dinoflagellates and Phaeocystis).
Tipo: | Text
Idioma: | Inglês

Identificador:

http://archimer.ifremer.fr/doc/00343/45411/44986.pdf

DOI:10.1016/j.marpolbul.2016.06.015

http://archimer.ifremer.fr/doc/00343/45411/

Editor: | Pergamon-elsevier Science Ltd
Formato: | application/pdf
Fonte: | Marine Pollution Bulletin (0025-326X) (Pergamon-elsevier Science Ltd), 2016-09 , Vol. 110 , N. 1 , P. 449-459

Fonte:

2016 Elsevier Ltd. All rights reserved.

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