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| Robert, Rene; Nicolas, Jean-louis; Conan, Rony. |
| For lack of antibiotics, King scallop larviculture faces high mortalities. In the experimental mollusc hatchery of Argenton (Brittany, France), the presence of a vibrio, Vibrio pectinicida, associated with the stocks seems to be responsible for this low survival rate. As prophylactic methods are difficult to implement in the current structures (water sterilization, egg decontamination, isolation of the stocks), the addition of chloramphenicol is the only solution to protect the stocks. However, the use of this antibiotic, considered as dangerous for man, has been prohibited in animal production throughout the whole of Europe since 1994. The action of two other antibiotics, the erythromycine and the oxolinic acid, has been searched for in Pecten maximus... |
| Tipo: Text |
Palavras-chave: Acide oxolinique; Erythromycine; Antibiotiques; Coquille St Jacques; Pecten maximus L.; Développement larvaire. |
| Ano: 1998 |
URL: http://archimer.ifremer.fr/doc/1998/publication-6199.PDF |
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| Buestel, Dominique; Gerard, Andre; Guenole, Annie. |
| Six batches of king scallop juveniles of different origins and obtained either by collection in their natural habitat (Saint-Brieuc, Scotland, Ireland), or by hatchery production in Brest in 1981, 1982, 1983, have been sown, at a size of 3 cm, in the roadsted of Brest between 1977 and 1983. Their growth, strongly linked to the evolution of the temperature, is well-described by a model, including a sinusoidal modulation, by Von Bertalanffy. The growth of the scallops collected in Saint-Brieuc, Scotland and Ireland, differentiates from that of the individuals from their original area and shows similarities with that of the scallops produced in Brest. Consequently, there must be an adaptation of the growth to the environmental conditions of the roadsted of... |
| Tipo: Text |
Palavras-chave: Pectiniculture; Croissance; Pecten maximus L.; Coquille Saint Jacques. |
| Ano: 1986 |
URL: http://archimer.ifremer.fr/doc/1986/acte-6189.PDF |
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| Buestel, Dominique; Dao, Jean-claude; Gohin, Francis. |
| The efficiency of the fishing drags in the Saint Brieuc Bay, Brittany, has been determined through the analysis of the tracks left on the seabed. The results, which focus mostly on the age class n°2 (2.5 years), show that the efficiency and the damages caused by the drags vary heavily according to the nature of the seabed. For soft bottoms, the average efficiency is 67 % and the global damage is 2 %. Concerning hard bottoms, the values are respectively 30 % and 17 %. These efficiency results combined with those of a dragging expedition in a set sector of the Saint-Brieuc Bay enable a direct assessment of the abundance. A result treatment method deriving from the geostatistical theory is used: it takes into account the spatial structure of the king scallop... |
| Tipo: Text |
Palavras-chave: Coquille Saint Jacques; Plongée; Dragage; Pecten maximus L.; Estimation stocks. |
| Ano: 1985 |
URL: http://archimer.ifremer.fr/doc/1985/acte-6536.pdf |
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| Buestel, Dominique; Guenole, Annie; Mingant, Christian. |
| In 1983, the pre-grow-out in the roadsted of Brest of 1.5m king scallop maximU6 post larvae from 1 to 5 mm lead to the production of 250,000 juveniles of a size comprised between 27 and 31 mm. The culture conditions have been particularly unfavourable in June with an infestation by the drilling worm Polydora sp and the starfish Asteria rubens, and in July when important mortalities and a stopping of the growth have been observed as well as the presence in the plankton of large quantities of dinoflagellates (most certainly toxic). Some experiments showed that the sensitivity of the scallops to those different mortality factors is proportional to the size of the farm. |
| Tipo: Text |
Palavras-chave: Prégrossissement; Elevage; Pecten maximus L.; Coquille Saint Jacques. |
| Ano: 1985 |
URL: http://archimer.ifremer.fr/doc/1985/acte-6539.pdf |
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| Cochard, Jean-claude; Gerard, Andre. |
| The analysis of the Pecten maximus larval productions carried out between 1982 and 1986 in the framework of the repopulating program of the roadsted of Brest demonstrated the existence of a number of factors affecting larval growth in hatcheries: - Larval growth shows important seasonal fluctuations. It is minimal in February-March (3 to 4 µm.D-1) and maximal in June (6 to 8 µm.D-1). The growth of larvae from conditioned spawners does not differ from that of larvae from mature genitors collected in their natural habitat. Growth is favoured by an unknown factor present in sea water and held with a filtration of 0,2 µm. - The growth of the larvae cultivated in slack water in flat bottom ponds is higher than that of the larvae cultivated in bubbling water in... |
| Tipo: Text |
Palavras-chave: Larve; Ecloserie; Croissance organisme; Coquille Saint Jacques; Pecten maximus L.; Production. |
| Ano: 1987 |
URL: http://archimer.ifremer.fr/doc/1987/acte-6534.pdf |
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