Application of a dynamic energy budget model to the Pacific oyster, Crassostrea gigas, reared under various environmental conditions
Pouvreau, S.; Bourles, Y.; Lefebvre, S.; Gangnery, A.; Alunno-Bruscia, M. (2006). Application of a dynamic energy budget model to the Pacific oyster, Crassostrea gigas, reared under various environmental conditions. J. Sea Res. 56(2): 156-167. http://dx.doi.org/10.1016/j.seares.2006.03.007
In: Journal of Sea Research. Elsevier/Netherlands Institute for Sea Research: Amsterdam; Den Burg. ISSN 1385-1101; e-ISSN 1873-1414, more
|  |
| Keywords |
Biology > Physiology > Ecophysiology
Cultured species
Energy budget
Population functions > Growth
Reproduction
Reproduction rate
Crassostrea gigas (Thunberg, 1793) [WoRMS]
ANE, France, Aquitaine, Arcachon Lagoon [Marine Regions]; ANE, France, Poitou-Charentes, Marennes-Oleron Bay [Marine Regions]
Marine/Coastal |
| Author keywords |
Crassostrea gigas; Dynamic Energy Budget; ecophysiology; growth;reproduction; reproductive effort |
| Authors | | Top |
- Pouvreau, S.
- Bourles, Y.
- Lefebvre, S.
|
- Gangnery, A.
- Alunno-Bruscia, M.
|
|
| Abstract |
The Dynamic Energy Budget (DEB) model (Kooijman, S.A.L.M., 1986. Energy budgets can explain body size relations. J. Theor. Biol. 121, 269-282; Kooijman, S.A.L.M., 2000. Dynamic Energy and Mass Budgets in Biological Systems. Cambridge University Press, Cambridge, 424 pp.) has been adapted to describe the dynamics of growth and reproduction of the Pacific oyster (Crassostrea gigas) reared in different areas under conditions ranging from controlled to natural. The values of the model parameters were estimated from available physiological data and from published information. The sets of data used to validate the model came from three long-term growth experiments (> 5 months) performed on Pacific oysters reared under different conditions of food and environment. The forcing variables were temperature and phytoplankton densities, the latter being assessed from in vivo fluorescence and chlorophyll-a concentration measurement. The successful validation of the model on the three data sets demonstrated its ability to capture the dynamics of the energy budget in the Pacific oyster in various environments with the same set of parameters. The only parameter that varied between simulations was the half-saturation coefficient (XK), because of a different diet composition between the three environments under test. The model successfully reproduced quantitatively the growth and reproduction and the timing of spawning. These first simulation data led us to propose several promising perspectives of application for this model in shellfish ecosystems. |
|
