Nom du corpus

Corpus Systématique Animale

Titre du document

Experimental study of the impacts of planktivorous fishes on plankton community and eutrophication of a tropical Brazilian reservoir

Lien vers le document
Éditeur
Springer (journals)
Langue(s) du document
Anglais
Type de document
Research-article
Mots-clés d'auteur
  • planktivorous fish
  • biomanipulation
  • feeding rates
  • eutrophication
  • tropical reservoir
Nom du fichier dans la ressource
Poissons_v2b_003361
Auteur(s)
  • Fernando L. R. M. Starling 1
  • Antônio J. A. Rocha 2
Affiliation(s)
  • 1) Companhia de Água e Esgotos de Brasília (CAESB), Seção de Estudos de Poluição Hídrica, Diretoria de Tecnologia Ambiental, Q.04 B1.A no 67/97 SCS, 70300, Brasília-DF, Brazil
  • 2) Departamento de Ecologia, Universidade de Brasília, 70910, Brasília-DF, Brazil
Résumé

We examined the impacts of three facultative planktivorous fishes, Congo tilapia (Tilapia rendalli), bluegill (Lepomis macrochirus) and tambaqui (Colossoma macropomum), and an obligate planktivorous fish, silver carp (Hypophthalmichthys molitrix) on plankton community and water quality of a tropical eutrophic reservoir, Paranoá Reservoir, Brasília, Brazil, conducting both laboratory selective grazing experiments and an enclosure experiment. The first two species inhabit this reservoir and the remaining two are recommended for introduction. The field experiment was performed in ten limnocorrals (2 m3 each) and lasted five weeks. During the enclosure experiment, silver carp suppressed copepod nauplii, cladocerans and rotifers while the presence of tilapia and bluegill were associated with increased rotifers density. The dominant blue-green algae,Cylindrospermopsis raciborskii (98% of phytoplankton biomass) was enhanced in the presence of bluegill, tilapia and tambaqui, but reduced in the presence of silver carp. This impact on plankton is in agreement with the results of the laboratory feeding trials. The observed alterations in water quality parameters in fish limnocorrals are discussed in relation to plankton community and eutrophication of this ecosystem. It is suggested that the control of the undesirable algaeC. raciborskii directly by silver carp grazing is a promising management tool.

Catégories Science-Metrix
  • 1 - natural sciences
  • 2 - biology
  • 3 - marine biology & hydrobiology
Catégories INIST
  • 1 - sciences appliquees, technologies et medecines
  • 2 - sciences biologiques et medicales
  • 3 - sciences biologiques fondamentales et appliquees. psychologie
  • 4 - productions animales
Catégories Scopus
  • 1 - Life Sciences ; 2 - Agricultural and Biological Sciences ; 3 - Aquatic Science
Catégories WoS
  • 1 - science ; 2 - marine & freshwater biology
Identifiant ISTEX
6642BE4D3600FEB656319C9450392B8015D7F471
Revue

Hydrobiologia

Année de publication
1990
Présence de XML structuré
Non
Version PDF
1.3
Score qualité du texte
8.982
Sous-corpus
  • Poissons
Type de publication
Journal
ark:/67375/1BB-4RV46NW9-5
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