Consulta: creatorFacets:"Normant, Yvon"
Registros recuperados: 10
Data/hora: 06/06/2024 18:31:31

Effect of stripping frequency on turbot spawn quality.
Provedor de dados: 5
Autores: Fauvel, Christian; Omnes, Marie-helene; Suquet, Marc; Normant, Yvon.
In production operations the application of daily examination of each female of broodstock should be a determinant progress in hatchery management in terms of fry output.  The eggs expelled shortly after ovulation by means of a systematic fivefold a week stripping attempt of females, presented a high viability rate (72%) compared to that of eggs collected twice a week (46%) whereas the treatments did not have any effect on female fecundity.  Increase of the stripping rhythm brought the hatching rates and broodstock fertilities respectively from 11% to 35% and from 20,000 to 65,000 larvae/kg of spawning female. The enhancement of egg quality and of the resulting larva production is discussed.
Tipo: Text
Ano: 1991
URL: http://archimer.ifremer.fr/doc/00170/28129/26346.pdf

Application of staining techniques to improve the viability assessment of turbot (Psetta maxima) ova
Provedor de dados: 5
Autores: Omnes, Marie-helene; Dorange, Germaine; Suquet, Marc; Normant, Yvon.
Staining-dye procedures were tested on the turbot ovule in order to develop a rapid technique for determining ovule viability. Neutral red and Trypan blue dyes provided better assessment of the proportion of viable or dead female gametes when inducing fertilisation.
Tipo: Text
Ano: 1999
URL: http://archimer.ifremer.fr/doc/00002/11323/7860.pdf

Pollack (Pollachius pollachius): Acquisition of biologic data in a breeding purpose
Provedor de dados: 5
Autores: Buchet, Vincent; Suquet, Marc; Omnes, Marie-helene; Petton, Bruno; Normant, Yvon; Severe, Armelle; Quemener, Loic; Barone, Herve; Fauvel, Christian; Gaignon, Jean-louis.
The fishing of pollack which concerns essentially, France, United Kingdom and Norway, and at a lower level Ireland and Denmark, is situated between 10 and 15000 tons a year. In 1996, France was the first producer of Pollack. Since 1980, a decrease of production is observed in Europe. In France, landing reached 3000t. in 1998 (Suquet, 2001). However, the demand remaining strong, aquaculture could be a solution to satisfy the deficit between the French production and the domestic demand.
Tipo: Text
Ano: 2002
URL: http://archimer.ifremer.fr/doc/00170/28144/26365.pdf

Egg production in the turbot (Scophthalmus maximus) in relation to broodstock management
Provedor de dados: 5
Autores: Omnes, Marie-helene; Normant, Yvon; Suquet, Marc; Fauvel, Christian.
Egg production data from individual hand stripped female turbot were collected and analysed over several consecutive spawning seasons, on natural or shifted conditions. Egg quantity, egg viability and number of spawns were examined from one spawning season to the other, and inside the spawning season. These parameters seemed to increase from a year to the next one, except for the oldest fishes. Spawns were spread over a three-month period and occurred at the same time in the period in successive seasons for most females. Egg production seemed related to the feeding level and the earliness of spawning season appeared depended on the growth rate. Without sand substrate in tanks, injuries could increase therefore no significant differences were observed in...
Tipo: Text
Ano: 1992
URL: http://archimer.ifremer.fr/doc/00199/31018/29423.pdf

Effect of temperature, volume of ova batches, and addition of a diluent, an antibiotic, oxygen and a protein inhibitor on short-term storage capacities of turbot, Psetta maxima, ova
Provedor de dados: 5
Autores: Suquet, Marc; Chereguini, Olvido; Omnes, Marie-helene; Rasines, Inmaculada; Normant, Yvon; Souto, Isabel; Quemener, Loic.
The effect of different parameters on shea-term storage capacity of turbot ova was assessed over a 45-h period after ova collection for fertilization rates and over a 9-h period after ova collection for hatching rates. Increasing the volume of ova sampling from 0.5 to 2.5 mt, as well as adding an antibiotic-antimicotic solution or oxygen did not significantly change the storage capacity of ova. Regarding the hatching rates, a higher storage ability was recorded at 8 and 13 degrees C, compared to 3 degrees C. The mean composition of the ovarian fluid was determined (n = 57 spawns). Use of a diluent mimicking the ovarian fluid significantly decreased the storage ability as assessed by the fertilization rates but did not modify the hatching rates. Diluting...
Tipo: Text
Palavras-chave: Psetta maxima; Turbot; Calcium; Ovarian fluid; Short term storage; Ova; Fish; Psetta maxima; Turbot; Calcium; Liquide ovarien; Conservation à court terme; Ovules; Poisson.
Ano: 1999
URL: http://archimer.ifremer.fr/doc/1999/publication-857.pdf

Cod (Gadus morhua) rearing attempts in France
Provedor de dados: 5
Autores: Suquet, Marc; Omnes, Marie-helene; Normant, Yvon; Petton, Bruno; Severe, Armelle; Fauvel, Christian; Barone, Herve; Quemener, Loic; Buchet, Vincent; Pasco, Laurent; Menard, E; Gaignon, Jean-louis.
Because of its rapid growth, its good reputation and the promising aquaculture experiences conducted in Norway and Scotland, cod is considered as a good candidate for cold water aquaculture. The aim of this paper is to present the work carried out in France since 1999: the selection of cod as a promising candidate for aquaculture and the assessment of its rearing performances in this environment.
Tipo: Text
Ano: 2002
URL: http://archimer.ifremer.fr/doc/00170/28142/26362.pdf

Long-term effects of the cryopreservation of turbot (Psetta maxima) spermatozoa
Provedor de dados: 5
Autores: Suquet, Marc; Dreanno, Catherine; Petton, Bruno; Normant, Yvon; Omnes, Marie-helene; Billard, Roland.
The survival of turbot eggs and the rearing capacities of larvae stemmed from artificial fertilization practices using frozen-thawed spermatozoa were evaluated. Furthermore, the viability of sperm samples stored during a 9 month period in liquid nitrogen was assessed. No significant difference in the fertilization rate, hatching rate, survival and wet weight of 10-day old larvae were observed using fresh or frozen-thawed spermatozoa. The motility recorded at 10 s and 60 s post-activation and the fertilization capacity of frozen-thawed spermatozoa were not significantly decreased during a 9 month storage period in liquid nitrogen. These results confirm the high quality of the turbot spermatozoa stemmed from the cryopreservation process, allowing their use...
Tipo: Text
Palavras-chave: Turbot; Psetta maxima; Sperm; Cryopreservation; Hatching.
Ano: 1998
URL: http://archimer.ifremer.fr/doc/00176/28721/27176.pdf

Effect of water temperature on individual reproductive activity of pollack (Pollachius pollachius)
Provedor de dados: 5
Autores: Suquet, Marc; Normant, Yvon; Gaignon, Jean-louis; Quemener, Loic; Fauvel, Christian.
The effects of water temperature on pollack (Pollachius pollachius) spawning features were individually assessed. During the spawning period, nine fish sets, each composed of one female and two males (mean body weight: 2.5+/-1.0 kg), were placed in small-volume tanks (2 m(3)). Fish sets were held at 8, 10, or 12 degreesC (n=3 for each temperature).   Three females released eggs at 8 and 10 degreesC, while only two spawned at 12 degreesC. One hundred thirty-one individual spawns were collected from the eight spawning fish sets. The number of spawns collected per female was significantly lower at 12 degreesC (3.0+/-3.6), compared to 10 degreesC (17.3+/-10.1) and 8 degreesC (23.3+/-2.5). Egg number (eggs kg(-1) BW) was significantly lowered at 12 degreesC...
Tipo: Text
Palavras-chave: Egg quality; Temperature; Reproduction; Pollachius pollachius; Pollack; Gadoids.
Ano: 2005
URL: http://archimer.ifremer.fr/doc/2005/publication-470.pdf

First rearing attempts of pollack, Pollachius pollachius
Provedor de dados: 5
Autores: Suquet, Marc; Petton, Bruno; Normant, Yvon; Dosdat, Antoine; Gaignon, Jean-louis.
Tipo: Text
Ano: 1996
URL: http://archimer.ifremer.fr/doc/00188/29888/28339.pdf

Analysis of turbot (Scophthalmus maximus) broodstock pilot scale production.
Provedor de dados: 5
Autores: Omnes, Marie-helene; Normant, Yvon; Suquet, Marc; Fauvel, Christian.
Rearing turbot (Scophthalmus maximus) reaches the commercial scale. With the hatchery output increasing, more attention needs to be focussed on broodstocks performance both in terms of quantity and viability of eggs. The techniques of shifting the environmental conditions allow a production of eggs all year round. However, egg quality tends to be highly variable. This paper examines over a two-year period, the improvement in egg quality and its consequences on the production of larvae by a strict management of spawners.
Tipo: Text
Ano: 1991
URL: http://archimer.ifremer.fr/doc/00169/28061/29430.pdf