Variability of the total free amino acid (TFAA) pool in Mytilus galloprovincialis cultured on a raft system. Effect of body size
11 Abstract 12 Variability of total free amino acid (TFAA) pool in Mytilus galloprovincialis was analysed 13 following raft culture of growing mussels. With the aim to ensure the actual effect of animal’s 14 size, a mussel population was sampled in laboratory covering the field size (15-60 mm shell...
| Autores: | , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2011 |
| País: | España |
| Institución: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/39116 |
| Acceso en línea: | http://hdl.handle.net/10261/39116 |
| Access Level: | acceso abierto |
| Palabra clave: | Free amino acids Mytilus galloprovincialis Culture Growth |
| Sumario: | 11 Abstract 12 Variability of total free amino acid (TFAA) pool in Mytilus galloprovincialis was analysed 13 following raft culture of growing mussels. With the aim to ensure the actual effect of animal’s 14 size, a mussel population was sampled in laboratory covering the field size (15-60 mm shell 15 length). TFAA showed a constant profile regardless size increase of individuals in both field 16 and laboratory experiments. Environmental salinity and temperature varied within a relatively 17 narrow range in the field (34-35‰ and 14-19ºC, respectively). Despite the narrow variability of 18 TFAA, significant differences were reported for the most representative amino acids. 19 Specifically, taurine content significantly dropped with soft tissues increase in both field and 20 laboratory experiments. Up to 40% of taurine drop in growing individuals was counterbalanced 21 by the increase in alanine as main protein free amino acid (PFAA) whereas glycine showed high 22 variability and inconsistency. PFAA increased linearly with the endogenous condition of 23 individuals and were inversely correlated with protein content. In summary, TFAA pool of M. 24 galloprovincialis remained unchanged with animal’s size which might ensure optimal protein 2 1 turnover rates during growth and establish a significant link between energetic status (condition) 2 and PFAA, values that are equilibrated by a significant drop of the most abundant taurine. |
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