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| Registros recuperados: 18 | |
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| Girin, Michel; Metailler, Robert; Nedelec, Jacqueline. |
| A comparative test of various inert diets was performed on 9 batches of 150 one month old soles, wheighing an average 42 mg, and feeding on live brine shrimps. It lasted for 2 months, in 60 l square tanks, with sand bottoms. . A succession of frozen natural feed, ending with the Bivalve Laevioardium arassum, was compared to 2 different artificial diets, offered as dry pellets. The inurement to the pellets was facilitated by an incorporation of various meals, used as flavourings, during a 6 weeks transitory period. - At the end of the experiment, the best result, 98 % survival, average weight . 1.10 g, was obtained with the natural feed. The best flavourings for dry pellets were Laevi- cardium arassum and the Polyahaete Nephthus hombergii, with 70 %... |
| Tipo: Text |
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| Ano: 1977 |
URL: http://archimer.ifremer.fr/doc/00305/41624/40833.pdf |
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| Buestel, Dominique; Nicolas, R.; Morize, E.; Rohan, R.; Latrouite, Daniel; Le Borgne, Y.; Cochard, Jean-claude; Flassch, Jean-pierre; Uno, Yutaka; Audouin, Jacques; Legall, J.y.; Jezequel, M.; Lorec, J.; Henocque, Yves; Reveche, C.; Girin, Michel; Laurec, Alain; Herry, P.. |
| L'aquaculture extensive et le repeuplement sont deux modes d'exploitation des ressources halieutiques qui ne font appel, une fois les juvéniles produits, ni à un apport de nourriture artificielle, ni à un contrôle continu de la part de l'exploitant, mais dépendent par contre de la productivité du milieu marin, Cette approche repose sur l'idée que le principal facteur limitant d'une population naturelle est le faible nombre de survivants après les premiers stades, et que l'on peut par alevinage, aménagement du milieu ou autres techniques, augmenter la production d'une espèce exploitable, Le but de ces journées d'étude est de faire le point des connaissances sur ces sujets, à l'intention des scientifiques mais aussi des utilisateurs, Il a paru souhaitable de... |
| Tipo: Text |
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| Ano: 1979 |
URL: http://archimer.ifremer.fr/doc/00018/12941/9907.pdf |
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| Girin, Michel; Devauchelle, Nicole. |
| Sea bass (Dicentrarchus labrax), turbot (Scophthalmus maximus) and gilthead sea bream (Sparus aurata) spawners were kept in 2 identical 40 m3 tanks, one outdoors (control) and one indoors (test) during a 5-year experiment. The control tank was under natural yearly photoperiod and the temperature cycles of western Brittany. The test tank was under similar variation for 3 years but with the cycles compressed into 10 months. The 3 species spawned naturally in these artificial conditions at various stages of the experiment. After 3 years, the fish in the test tank spawned an average 5 months ahead of the others. [NOT CONTROLLED OCR] |
| Tipo: Text |
Palavras-chave: Histoire Ifremer. |
| Ano: 1978 |
URL: http://archimer.ifremer.fr/doc/1978/publication-5229.pdf |
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| Barahona-fernandes, Maria Helena; Girin, Michel. |
| Four batches of 7 500 larvae were reared during a period of one month in 150 l tanks at 18° C. The first one was fed on the basis of estimates of the required daily amount of organisms that were made by one of the authors ; the second batch was fed on the average , of the estimates made by both authors ; the third and the fourth batches were fed, respectively, with,20 % above and 20 % below this average. The densities of food in the tanks varied from 0 to 16 organisms /ml before the daily meal and from 1 to 25 organisms/ml after it. There was no significant difference in the final weight or length of the larvae, although the larvae receiving. the highest food level showed a significantly better growth at the age of 15 days. Survival seemed to be better at... |
| Tipo: Text |
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| Ano: 1977 |
URL: http://archimer.ifremer.fr/doc/00305/41620/40829.pdf |
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| Girin, Michel. |
| The production of marine fish fry is presently based on the use of live food organisms, at least during the first few weeks after hatching. As outdoor pond techniques, with natural production of live food organisms, could never be very successfully applied to marine larvae, the food organisms used are either cultured or bought at a high price on a speciaiized market. Cutting down the cost of the production of fry implies cheaper live food organisms and early weaning techniques, but the most promising solution for the future would undoubtedly be the use of artificial diets straight from first feeding. It has been demonstrated on some species that the larvae can survive on such diets, but important technological problems still have to be overcome before they... |
| Tipo: Text |
Palavras-chave: Histoire Ifremer. |
| Ano: 1979 |
URL: http://archimer.ifremer.fr/doc/1979/publication-5258.pdf |
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| Girin, Michel. |
| During the spring of 1974, 364,000 sea bass larvae, obtained from natural spawnings in captivity, were reared up to 1 month , in 60-500 l tanks in 22 different experiments. The only food for the fish larvae, consisted of the rotifer Brachionus plicatilis Müller, and nauplii or metanauplii of the branchipod Arternia salina L. Larval density at the beginning of the experiments ranged from 28-154/l. It was reduced after 1 month to 2-32 larvae/l., the survival ranged from 3-69 %. Under the experimental conditions employed, survival seemed to be stricktly related to the daily feeding regime. Both survival and growth seemed to be independent from the size of the culture tanks and from the larval density. The nutritional budget of 30 day old fingerlings was... |
| Tipo: Text |
Palavras-chave: Histoire Ifremer. |
| Ano: 1975 |
URL: http://archimer.ifremer.fr/doc/1975/publication-5103.pdf |
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| Girin, Michel; Person-le Ruyet, Janine. |
| The daily food supply is usually considered as the main limiting factor for large scale productions of young marine fish.Collecting natural plancton at sea is an easy way of providing small scale tests with a food of good quality. But the method becomes hardly dependable beyond the scale of the aquarium.Large scale production of juvenile fish became possible, during the last decades, with the development of mass production techniques for some food organisms. Among these organisms, the Branchiopod Artemia salina and the Rotifer Brachionus plicatilis undeniably overcome ; meanwhile the culture of Copepods,the most interesting part of natural plankton, remains mainly at laboratory stage. [NOT CONTROLLED OCR] |
| Tipo: Text |
Palavras-chave: Histoire Ifremer. |
| Ano: 1977 |
URL: http://archimer.ifremer.fr/doc/1977/publication-5187.pdf |
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| Girin, Michel. |
| This volume describes and analyses a series of experiments performed £rom 1971 to 1976, in order to develop a confident technique for the production of Sea-Bass, Sole and Turbot fry, during the set up of the marine aquaculture laboratory of the "Centre Océanologique de Bretagne". Such a program implied to spawn the adults , to hatch the eggs, to rear the larvae, and to wean the juveniles ont0 an inert diet that would support their growth up to the commercial size , for all of which facilities had to be built , and knowledge had to be acquired. In order to facilitate the comparisons, all the larvae were reared at temperatures close to 18° C. In such conditions, the weaning to the inert diet could be achieved before the fish were 3 month old. The work... |
| Tipo: Text |
Palavras-chave: Histoire Ifremer. |
| Ano: 1979 |
URL: http://archimer.ifremer.fr/doc/1979/rapport-4789.PDF |
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| Menu, Bruno; Girin, Michel. |
| A batch of red mullet spawners, held in captivity, spawned for 3 years in a 20 m3 tank. The eggs were incubated between 9 and 18° C, and hatched normally. The relationship between incubation time and temperature was calculated. Several rearing trials were performed at 19° C, in 150 l tanks. SurvivaIs up to 32 days were obtained, but metamorphosis was not yet completed at that age. The corresponding growth curves were drawn, and the Iarval development of the species was studied in detail. |
| Tipo: Text |
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| Ano: 1978 |
URL: http://archimer.ifremer.fr/doc/00138/24885/22976.pdf |
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| Devauchelle, B.; Girin, Michel. |
| The use of the Rotifer Brachionus plicatilis has spread for a few years in the laboratories dealing with the rearing of marine fish larvae. Thanks to the works by Theilacker and Mac Master (1971) in the U.S.A., and by Hirayama and Ogawa (1972) and Hirayama and Kusano (1972) in Japan, the conditions to follow to rear large quantities are well-known. The common method used consists of placing a Rotifer inoculum in a mono or plurispecific culture of planktonic algae ("green water"), in leaving them to multiply exponentially at the expense of the alga, and to use them before they run out of food. [...] |
| Tipo: Text |
Palavras-chave: Histoire Ifremer. |
| Ano: 1973 |
URL: http://archimer.ifremer.fr/doc/1973/publication-5986.pdf |
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| Gatesoupe, François-joël; Girin, Michel; Luquet, Pierre. |
| Various zein-coated artificial diets were distributed either alone or in association with rotifers to larvae of sea-bass and sole. Utilization of artificial diets alone gave rather unsatisfactory results, whereas , the simultaneous use of these with limited quantity of live-preys proved successful : when a low density of fish was retained (3 to S larvae/litre), it was found that the survival rate after one month for the sea-bass was above 10 p. 100 and for the sole, there was metamorphosis up to 71 p. 100. The analysis of results obtained for the different artificial diets seems to indicate that the superiority of live rotifers is more due to their movement than to their composition. |
| Tipo: Text |
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| Ano: 1977 |
URL: http://archimer.ifremer.fr/doc/00305/41622/40831.pdf |
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| Girin, Michel. |
| The first metamorphoses during rearing of flounder larvae were obtained at the beginning of the century, in France, by Fabre-Domergue and Bietrix (1905). Sixty years later, their experiments were taken over by Fluchter (1965-1972) in Germany, and Shelbourne (1968) in Great-Britain. The first one focused on the laboratory study of the impact of the water quality on the rearing success, and the latter, on the development of industrial hatcheries. Both obtained metamorphosis with survival rates varying from one egg laying to the other and reaching 80 % in the best batches. They explain these variations through genetic differences or pathological phenomena. |
| Tipo: Text |
Palavras-chave: Histoire Ifremer. |
| Ano: 1973 |
URL: http://archimer.ifremer.fr/doc/1973/publication-5993.pdf |
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| Girin, Michel. |
| The authors who obtained the first metamorphosis during rearing of turbot larvae in 1972, in Great -Britain (Jones, Alderson and Howell, to be published), and in France (Girin, 1972) could not determine precisely the factors of their success. The great diversity, in shape and size, of the ponds used makes us think that the fishes' diet is the key to the issue. An experiment focusing on this issue had confirmed the importance of the daily food ration during the first 20 days following hatching (Girin, 1973). But a food catching problem seemed to add on to the food ration issue during the metamorphosis, leading to a halt in the rearing. |
| Tipo: Text |
Palavras-chave: Histoire Ifremer. |
| Ano: 1973 |
URL: http://archimer.ifremer.fr/doc/1973/publication-5994.pdf |
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| Registros recuperados: 18 | |
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