EsturgeonV1, Main, Exploration, bibRecord, 001D55

The last known population of the freshwater mussel Margaritifera auricularia (Bivalvia, Unionoida): A conservation priority

Identifieur interne : 001D55 ( Main/Exploration ); précédent : 001D54; suivant : 001D56

The last known population of the freshwater mussel Margaritifera auricularia (Bivalvia, Unionoida): A conservation priority

Auteurs : Cristian R. Altaba [États-Unis]

Source :

Biological Conservation [ 0006-3207 ] ; 1990.

RBID : ISTEX:AE2B3A1F438308190278D9236A62B0E5D2A3B91F

Descripteurs français

Pascal (Inist)
- Acipenser sturio, Bivalvia, Cours eau, Espagne, Espèce menacée, Margaritifera auricularia, Milieu dulçaquicole, Protection faune, Relation intraspécifique, Riviere Ebre.
Wicri :
- geographic : Espagne.

English descriptors

KwdEn :
- Acipenser sturio, Animal conservation, Bivalvia, Endangered species, Freshwater environment, Intraspecific relation, Spain, Stream.

Abstract

In 1985 a population of Margaritifera auricularia was found in the lowe Ebro river and adjoining channels in Catalonia, Spain. This species once lived in large rivers over most of Western Europe and Morocco, but overfishing for its shell and pearls, and widespread destruction of freshwater habitats, accounted for its almost total extinction. Since its rediscovery, the freshwater mussels in the channels have been destroyed and the remaining individuals in the river itself are threatened by pollution, hydraulic works, diversion and uncontrolled collecting. No young individuals have been found. Based on low interpopulation phenotypic differentiation, inferred larval morphology, and congruent geographical and ecological distributions, it is hypothesized that the Western European sturgeon Acipenser sturio Linnaeus, 1758, an anadromous bottom-feeder, is probably the main host for this unionoid. This fish is also endangered and may be already extinct in the Ebro. The proposed conservation measures include restrictions to collecting, protection of the fish hosts and key habitats, education, establishment of captive breeding colonies, repopulation, and water quality control.

Url:

https://api.istex.fr/document/AE2B3A1F438308190278D9236A62B0E5D2A3B91F/fulltext/pdf

DOI: 10.1016/0006-3207(90)90072-W

Affiliations:

États-Unis

Le document en format XML

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<term>Intraspecific relation</term>
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<term>Espèce menacée</term>
<term>Margaritifera auricularia</term>
<term>Milieu dulçaquicole</term>
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<term>Relation intraspécifique</term>
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<front><div type="abstract" xml:lang="en">In 1985 a population of Margaritifera auricularia was found in the lowe Ebro river and adjoining channels in Catalonia, Spain. This species once lived in large rivers over most of Western Europe and Morocco, but overfishing for its shell and pearls, and widespread destruction of freshwater habitats, accounted for its almost total extinction. Since its rediscovery, the freshwater mussels in the channels have been destroyed and the remaining individuals in the river itself are threatened by pollution, hydraulic works, diversion and uncontrolled collecting. No young individuals have been found. Based on low interpopulation phenotypic differentiation, inferred larval morphology, and congruent geographical and ecological distributions, it is hypothesized that the Western European sturgeon Acipenser sturio Linnaeus, 1758, an anadromous bottom-feeder, is probably the main host for this unionoid. This fish is also endangered and may be already extinct in the Ebro. The proposed conservation measures include restrictions to collecting, protection of the fish hosts and key habitats, education, establishment of captive breeding colonies, repopulation, and water quality control.</div>
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The last known population of the freshwater mussel Margaritifera auricularia (Bivalvia, Unionoida): A conservation priority

The last known population of the freshwater mussel Margaritifera auricularia (Bivalvia, Unionoida): A conservation priority

Source :

Descripteurs français

English descriptors

Abstract

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

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri

	Serveur d'exploration sur l'esturgeon
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