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Título

Differences in physiological energetics between intertidal and raft cultivated mussels Mytilus galloprovincialis

AutorLabarta, Uxío ; Fernández-Reiriz, María José ; Babarro, José M. F.
Palabras claveMussel
Physiological energetics
Clearance rate
Metabolic rate
Absorption efficiency
Ammonia excretion rate
Scope for growth (SFG)
Net growth efficiency (K2)
Fecha de publicaciónjun-1997
EditorInter Research
CitaciónMarine Ecology Progress Series 152: 167-173 (1997)
ResumenMethods of physiological energetics were applied to compare growth rates of mussels Mytilus galloprovincialis Lmk. from 2 habitats: intertidal and raft cultures. Scope for growth was determined after 1 and 15 d under standard laboratory conditions. Both groups of mussels improved their growth potential during maintenance in the laboratory due to a combination of increased ingestion rate and decreased metabolic rate. Cultivated mussels presented higher weight-specific clearance rates, higher absorption efficiency and higher rates of ammonia excretion, which resulted in increased scope for growth with respect to intertidal mussels. This finding is related to the differential characteristics of these 2 habitats in terms of cycles of food availability and air exposure. Differences between the groups of mussels persisted after 15 d of experimental treatment and were mainly accounted for by absorption efficiency.
Descripción7 pages, 1 figure, 5 tables.
Versión del editorhttp://dx.doi.org/10.3354/meps152167
URIhttp://hdl.handle.net/10261/26251
DOI10.3354/meps152167
ISSN0171-8630
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