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| Registros recuperados: 80 | |
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| Heral, Maurice; Deslous-paoli, Jean-marc; Garnier, Jacqueline; Prioul, Daniel; Heurtebise, Serge; Razet, Daniel. |
| Different types of pregrowth of the Japanese palourde are compared on the some site. The method by upwelling which is the more common used, to have good growth, requires a compromise between the running and the raised biomass. Two periods are critical, in the summer the growth of mollusks is stopped because of a decrease in the phytoplanktonic production ; in the winter, a fall in temperature lessens filtration and stops growth. The results concern clams consummatation rates of particular food (chlorophyll, protids, lipids, glucids) as weIl as the way to supply the decreasing growth : increase of phytoplankyonic production in the summer by recycling waters from nurseries that are loaded with ammoniac and raise winter temperatures by using under-ground... |
| Tipo: Text |
Palavras-chave: Nursery; Growth; Ruditapes philippinarum; Clams; Nurserie; Croissance; Ruditapes philippinarum; Palourdes. |
| Ano: 1982 |
URL: http://archimer.ifremer.fr/doc/1982/acte-2951.pdf |
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| Goulletquer, Philippe. |
| For a few years, we have witnessed the rapid development of Japanese clam Ruditapes philippinarum (Adams & Reeve) culture on the Atlantic coast, and especially in the Charente Maritime region. However, a number of unknown variables still exist in order to optimize oyster farms and improve their benefits. In this respect, studies have been carried out since 1975 by the Centre Océanologique de Bretagne in Tudy Island, in the Kermoor pond, in order to determine: the consequence of the immersion size on their growth, the optimal seeding period, and the survival rate. Moreover, other studies aimed to significantly reduce the production cost, focused on pre-growth length. These studies correspond to a specific environment (i.e. the semi-closed Kermoor pond).... |
| Tipo: Text |
Palavras-chave: Maturation sexuelle; Cycle gamétogénétique; Biométrie; Croissance; Ruditapes philippinarum; Palourdes. |
| Ano: 1983 |
URL: http://archimer.ifremer.fr/doc/1983/rapport-3843.PDF |
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| Goulletquer, Philippe; Prou, Jean; Heral, Maurice. |
| Following the development of net protection techniques (1980), Japanese clam Ruditapes philippinarum farms develop in the ponds of Charente-Maritime. The county production for 1984 is about 100 tonnes, for a turnover of 4.5 Million Francs. To this day, farmers cultivating clams in ponds over a full cycle get better growth results during the first year. The size of 24 mm is obtained with a density of 200 individuals per square metre. However, due to the type of water input in ponds and to the limited primary production developing in the latter, it appears that biomasses in farms during the second year should not be greater than 0.5 to 1 kg per m² (30 to 50 clams per m²). Thus, the development of clam culture in marsh areas comes to a halt, as farmers are... |
| Tipo: Text |
Palavras-chave: Marennes Oléron; Mortalité; Biomasse; Croissance pondérale; Croissance linéaire; Biométrie; Elevage; Ruditapes philippinarum; Palourdes. |
| Ano: 1985 |
URL: http://archimer.ifremer.fr/doc/1985/rapport-3840.PDF |
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| Goulletquer, Philippe. |
| Since 1984, experiments have been carried out on clam Ruditapes philippinarum foreshore culture, with a one year pond pre-growth. Culture conditions are now well-known: population level with a tide coefficient of around 70 to 80, sediment of silty or fine grain size, sediment stability over the culture period-between the end of April and November. This culture possibility gives way to a diversification of production in the shellfish culture basin of Marennes-Oléron and can be used as an alternative to oyster overexploitation. Clam densities (2 kg/m²) are five times lower than oyster and the Ruditapes philippinarum filtration rate is 20% lower than that of Crassostrea gigas. |
| Tipo: Text |
Palavras-chave: Marennes Oléron; Culture en claire; Culture sur estran; Ruditapes philippinarum. |
| Ano: 1987 |
URL: http://archimer.ifremer.fr/doc/1987/rapport-3842.PDF |
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| Registros recuperados: 80 | |
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