EsturgeonV1, Main, Merge, bibRecord, 000D90

Negative effect of zebra mussels on foraging and habitat use by lake sturgeon (Acipenser fulvescens)

Identifieur interne : 000D90 ( Main/Merge ); précédent : 000D89; suivant : 000D91

Negative effect of zebra mussels on foraging and habitat use by lake sturgeon (Acipenser fulvescens)

Auteurs : D. J. Mccabe [États-Unis] ; M. A. Beekey [États-Unis] ; A. Mazloff [États-Unis] ; J. E. Marsden [États-Unis]

Source :

Aquatic conservation [ 1052-7613 ] ; 2006.

RBID : Pascal:06-0361877

Descripteurs français

Pascal (Inist)
- Fourragement, Choix habitat, Espèce envahissante, Espèce menacée, Prédateur, Proie, Habitat, Sédiment, Milieu aquatique, Protection environnement, Milieu eau douce, Dreissena polymorpha, Acipenser fulvescens, Lac Sturgeon.
Wicri :
- topic : Habitat, Milieu aquatique.

English descriptors

KwdEn :
- Aquatic environment, Dreissena polymorpha, Endangered species, Environmental protection, Foraging behavior, Freshwater environment, Habitat, Habitat selection, Invasive species, Predator, Prey, Sediments.

Abstract

1. Lake sturgeon (Acipenser fulvescens) are threatened or endangered throughout much of their range. Juvenile sturgeon utilize sandy and silty habitats extensively during their growth. Invasive zebra mussels change the nature of sandy and silty habitats because they settle on and coat the habitat with the shells of living and dead individuals. The potential impacts of this increased habitat complexity on lake sturgeon is unknown. 2. Juvenile lake sturgeon habitat choice was assessed in laboratory experiments, and zebra mussel impact on the foraging success of juvenile lake sturgeon on three different prey species was measured. 3. Sturgeon foraging on chironomids was virtually eliminated by 95% zebra mussel cover of the sand floor of the foraging arena, and 50% cover reduced foraging significantly. Foraging on more mobile prey items (amphipods and isopods) was essentially eliminated by either 95% or 50% zebra mussel cover of the arena floor. In habitat choice experiments, sturgeon avoided the zebra-mussel-covered habitat more than 90% of the time. 4. This combination of zebra mussel avoidance and reduced foraging in the presence of zebra mussels may be detrimental to sturgeon restocking programmes utilizing smaller sturgeon in zebra-mussel-infested waterways.

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Pascal:06-0361877

Le document en format XML

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<sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">Negative effect of zebra mussels on foraging and habitat use by lake sturgeon (Acipenser fulvescens)</title>
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<term>Proie</term>
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<term>Sédiment</term>
<term>Milieu aquatique</term>
<term>Protection environnement</term>
<term>Milieu eau douce</term>
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<front><div type="abstract" xml:lang="en">1. Lake sturgeon (Acipenser fulvescens) are threatened or endangered throughout much of their range. Juvenile sturgeon utilize sandy and silty habitats extensively during their growth. Invasive zebra mussels change the nature of sandy and silty habitats because they settle on and coat the habitat with the shells of living and dead individuals. The potential impacts of this increased habitat complexity on lake sturgeon is unknown. 2. Juvenile lake sturgeon habitat choice was assessed in laboratory experiments, and zebra mussel impact on the foraging success of juvenile lake sturgeon on three different prey species was measured. 3. Sturgeon foraging on chironomids was virtually eliminated by 95% zebra mussel cover of the sand floor of the foraging arena, and 50% cover reduced foraging significantly. Foraging on more mobile prey items (amphipods and isopods) was essentially eliminated by either 95% or 50% zebra mussel cover of the arena floor. In habitat choice experiments, sturgeon avoided the zebra-mussel-covered habitat more than 90% of the time. 4. This combination of zebra mussel avoidance and reduced foraging in the presence of zebra mussels may be detrimental to sturgeon restocking programmes utilizing smaller sturgeon in zebra-mussel-infested waterways.</div>
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Negative effect of zebra mussels on foraging and habitat use by lake sturgeon (Acipenser fulvescens)

Negative effect of zebra mussels on foraging and habitat use by lake sturgeon (Acipenser fulvescens)

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Links to Exploration step

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri