Effect of stripping frequency on turbot spawn quality.
| Type | Proceedings paper | ||||||||
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| Date | 1991 | ||||||||
| Language | English | ||||||||
| Author(s) | Fauvel Christian1, Omnes Marie-Helene 1, Suquet Marc1, Normant Yvon1 |
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| Affiliation(s) | 1 : Ifremer, France | ||||||||
| Meeting | International Council for the Exploration of the Sea, La Rochelle, France, 26 Sept.-1er Oct.1991. | ||||||||
| Source | ICES - C.M. 1991/F:34, pp.1-12 | ||||||||
| Note | Mariculture Committee | ||||||||
| Abstract | 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. |
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