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Título: | Valve-gaping behavior of raft-cultivated mussels in the Ría de Arousa, Spain |
Autor: | Comeau, Luc A.; Babarro, José M. F. CSIC ORCID; Longa, Ángeles; Padín, X. A. CSIC ORCID | Fecha de publicación: | 2018 | Editor: | Elsevier | Citación: | Aquaculture Research 9: 68-73 (2018) | Resumen: | We describe the valve-opening behavior of raft-cultivated mussels (Mytilus galloprovincialis) in the Ría de Arousa (Arousa estuary), Spain. Eight rope-grown mussels [mean ± standard error (SEM), shell length 61.6 ± 2.1 mm] were connected to a non-invasive valvometry apparatus that monitored (one measurement min−1) the magnitude of valve openness systematically over a 10 day period. It was found that valves were open 97.5 ± 1.3% percent of the time. Valve closures were not synchronized among the eight monitored mussels, suggesting that feeding cessation was physiologically-regulated rather than environmentally-mediated. The opening amplitudes that were most frequently observed were in the range of 60–90%, indicating that, when open, valves are usually opened relatively close to their maximum possible extent. The majority (7/8) of mussels displayed a circadian rhythm (τ = 24.0 h) in valve opening amplitude. They tended to exhibit maximum valve opening during nighttime and minimum opening during daytime. It is possible that the light:dark cycle represents an environmental zeitgeber entraining an endogenous gaping rhythm in this bivalve | Descripción: | 6 pages, 5 figures, 1 table.-- This is an open access article under the CC BY-NC-ND license | Versión del editor: | https://doi.org/10.1016/j.aqrep.2017.12.005 | URI: | http://hdl.handle.net/10261/160205 | DOI: | 10.1016/j.aqrep.2017.12.005 | ISSN: | 1355-557X | E-ISSN: | 1365-2109 |
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