| Autor: |
Maurice Heral, W Boromthanarat, Somsak Boromthanarat, Daniel Razet, Jean-Marc Deslous-Paoli |
| Rok vydání: |
1990 |
| Předmět: |
|
| Zdroj: |
Aquaculture. 91:49-63 |
| ISSN: |
0044-8486 |
| DOI: |
10.1016/0044-8486(90)90176-n |
| Popis: |
The energy budget of a population of Mytilus edulis cultured on bouchots in the bay of Marennes-Oleron was worked out from measurements of shell (7050 kJ m −2 year −1 ) and flesh (40 636 kJ m −2 year −1 ) production, and from field biodeposition (348 775 kJ m −2 year −1 ). The losses of energy induced by oxygen consumption (58 367 kJ m −2 year −1 ) and by NH 4 excretion (6202 kJ m −2 year −1 ) were measured in the laboratory under near field conditions. Production was negative in winter. During the phytoplanktonic bloom in June, production reached a maximum. The mean assimilation efficiency (23%) was near values recorded in the bay for other bivalve molluscs; nevertheless, the net production efficiency (47.8%) was representative of values described for this species. There was an inverse relationship between the amount of organic matter in sea water and the assimilation efficiency, and a positive relationship between food quality and the production of the mussel population. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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