Document Detail


Coupling of the biochemical composition and calorific content of zooplankters with the Microcystis aeruginosa proliferation in a highly eutrophic reservoir.
MedLine Citation:
PMID:  17203599     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The impact of the Cyanobacteria Microcystis aeruginosa on zooplankton dynamics was studied in the hypertrophic Villerest Reservoir (France). Samples were collected and their biochemical composition and calorific content examined. Three most abundant zooplankton species in the reservoir were considered: the cladoceran Daphnia longispina and the copepods Cyclops vicinus and Eudiaptomus gracilis. The three species were differently affected by the Microcystis aeruginosa blooms. Daphnia longispina did not seem to suffer from the proliferation of the M. acruginosa, although its biomass decreased concomitantly to the bloom. This collapse would be attributable to the lack of nutritional value of algae. Cyclops vicinus seemed to move away when Microcystis invaded the superficial layers of the reservoir. Because this zooplankter had migratory abilities, it reached the littoral zone where food was available. The energetic costs linked to this migration were clearly pointed out when the species recovered the pelagial zone in early fall. The behaviour of Eudiaptomus gracilis was not clear. This species underwent diapause as M. aeruginosa proliferated. This suggests that Eudiaptomnus gracilis moved away from the pelagial zone over the cyanobacterial blooms. In most cases, the cyanobacterial toxins affected the growth of zooplankton and the potential to use herbivorous zooplankton as a means to combat Microcystis proliferation in the Villerest reservoir seems limited.
Authors:
L Aleya; M Michard; H Khattabi; J Devaux
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Environmental technology     Volume:  27     ISSN:  0959-3330     ISO Abbreviation:  Environ Technol     Publication Date:  2006 Nov 
Date Detail:
Created Date:  2007-01-05     Completed Date:  2007-02-01     Revised Date:  2007-03-21    
Medline Journal Info:
Nlm Unique ID:  9884939     Medline TA:  Environ Technol     Country:  England    
Other Details:
Languages:  eng     Pagination:  1181-90     Citation Subset:  IM    
Affiliation:
Laboratoire de Biologie Environnementale, UsC INRA, Université de Franche-Comté. Place Leclerc, Besancon 25030 cedex, France.
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MeSH Terms
Descriptor/Qualifier:
Animals
Copepoda / growth & development,  metabolism*,  physiology
Daphnia / growth & development,  metabolism*,  physiology
Ecosystem
Eutrophication*
Female
Fresh Water / microbiology
Male
Microcystis / growth & development*
Water Supply
Zooplankton / growth & development,  metabolism*,  physiology

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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