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| Titel |
An overview of chemosynthetic symbioses in bivalves from the North Atlantic and Mediterranean Sea |
| VerfasserIn |
S. Duperron, S. M. Gaudron, C. F. Rodrigues, M. R. Cunha, C. Decker, K. Olu |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1726-4170
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| Digitales Dokument |
URL |
| Erschienen |
In: Biogeosciences ; 10, no. 5 ; Nr. 10, no. 5 (2013-05-14), S.3241-3267 |
| Datensatznummer |
250018249
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| Publikation (Nr.) |
 copernicus.org/bg-10-3241-2013.pdf |
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| Zusammenfassung |
| Deep-sea bivalves found at hydrothermal vents, cold seeps and organic falls
are sustained by chemosynthetic bacteria that ensure part or all of their
carbon nutrition. These symbioses are of prime importance for the
functioning of the ecosystems. Similar symbioses occur in other bivalve
species living in shallow and coastal reduced habitats worldwide. In recent
years, several deep-sea species have been investigated from continental
margins around Europe, West Africa, eastern Americas, the Gulf of Mexico, and
from hydrothermal vents on the Mid-Atlantic Ridge. In parallel, numerous,
more easily accessible shallow marine species have been studied. Herein we
provide a summary of the current knowledge available on chemosymbiotic
bivalves in the area ranging west-to-east from the Gulf of Mexico to the
Sea of Marmara, and north-to-south from the Arctic to the Gulf of Guinea.
Characteristics of symbioses in 53 species from the area are summarized for
each of the five bivalve families documented to harbor chemosynthetic
symbionts (Mytilidae, Vesicomyidae, Solemyidae, Thyasiridae and Lucinidae).
Comparisons are made between the families, with special emphasis on ecology,
life cycle, and connectivity. Chemosynthetic symbioses are a major
adaptation to ecosystems and habitats exposed to reducing conditions.
However, relatively little is known regarding their diversity and
functioning, apart from a few "model species" on which effort has focused
over the last 30 yr. In the context of increasing concern about
biodiversity and ecosystems, and increasing anthropogenic pressure on
oceans, we advocate a better assessment of the diversity of bivalve
symbioses in order to evaluate the capacities of these remarkable ecological
and evolutionary units to withstand environmental change. |
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