| Type |
Article |
| Date |
2014-10 |
| Language |
English |
| Author(s) |
Picoche Coralie1, Le Gendre Romain 1, Flye-Sainte-Marie Jonathan2, Francoise Sylvaine1, Maheux Frank1, Simon Benjamin1, Gangnery Aline1 |
| Affiliation(s) |
1 : IFREMER, Lab Environm Ressources Normandie, Port En Bessin, France.
2 : Univ Bretagne Occidentale, Inst Univ Europeen Mer, Lab Sci Environnement Marin LEMAR, UMR 6539,CNRS,UBO,IRD,IFREMER, Plouzane, France. |
| Source |
Plos One (1932-6203) (Public Library Science), 2014-10 , Vol. 9 , N. 10 , P. 1-13 |
| DOI |
10.1371/journal.pone.0109796 |
| WOS© Times Cited |
14 |
| Abstract |
The blue mussel, Mytilus edulis, is a commercially important species, with production based on both fisheries and aquaculture. Dynamic Energy Budget (DEB) models have been extensively applied to study its energetics but such applications require a deep understanding of its nutrition, from filtration to assimilation. Being filter feeders, mussels show multiple responses to temporal fluctuations in their food and environment, raising questions that can be investigated by modeling. To provide a better insight into mussel–environment interactions, an experiment was conducted in one of the main French growing zones (Utah Beach, Normandy). Mussel growth was monitored monthly for 18 months, with a large number of environmental descriptors measured in parallel. Food proxies such as chlorophyll a, particulate organic carbon and phytoplankton were also sampled, in addition to non-nutritious particles. High-frequency physical data recording (e.g., water temperature, immersion duration) completed the habitat description. Measures revealed an increase in dry flesh mass during the first year, followed by a high mass loss, which could not be completely explained by the DEB model using raw external signals. We propose two methods that reconstruct food from shell length and dry flesh mass variations. The former depends on the inversion of the growth equation while the latter is based on iterative simulations. Assemblages of food proxies are then related to reconstructed food input, with a special focus on plankton species. A characteristic contribution is attributed to these sources to estimate nutritional values for mussels. M. edulis shows no preference between most plankton life history traits. Selection is based on the size of the ingested particles, which is modified by the volume and social behavior of plankton species. This finding reveals the importance of diet diversity and both passive and active selections, and confirms the need to adjust DEB models to different populations and sites. |
| Full Text |
| File |
Pages |
Size |
Access |
| Publisher's official version |
13 |
1 MB |
Open access |
| Figures |
2 |
257 KB |
Open access |
| Table S1 |
3 |
122 KB |
Open access |
| Text S1 |
2 |
180 KB |
Open access |
| Text S2 |
2 |
14 KB |
Open access |
|
