Seasonal differences in effect of broodstock diet on spawning success in the great scallop
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Great scallop (Pecten maximus L.) broodstock collected at two different seasons, spring (May) and winter (December), were given four different diets during conditioning. The spring group was spawned in late June, and the winter group in February.The highest number of veligers in the summer spawning (30 millions per 10broodstock), was produced using a diet consisting of 80% Tahitian Isochrysis galbana. In the winter spawning, broodstock given a dietconsisting of 80% diatoms (Skeletonema costatum/Chaetocerosgracilis) produced the highest number of veligers (29 millions per 10broodstock). Fecundity and the number of egg-releasing individuals were higher in the early summer spawning (June) than in the winter spawning (February), however, the total number of three days old veligers produced was nearly the same in the two seasons.
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- Beaumont, A.R. and Budd, M.D. (1983) Effects of self-fertilisation and other factors in the early development of the scallop Pecten maximus. Marine Biology 76, 285–289.Google Scholar
- Berntsson, K.M., Jonsson, P.R., Wängberg, S.Å. and Carlsson, A.S. (1997) Effects of broodstock on fatty acid composition, survival and growth rates in larvae of the European flat oyster, Ostrea edulis. Aquaculture 154, 139–153.Google Scholar
- Cochard, J.C. and Devauchelle, N. (1993) Spawning, fecundity and larval survival and growth in relation to controlled conditioning in native and transplanted populations of Pecten maximus (L.): evidence for the existence of separate stocks. J. Exp. Mar. Biol. Ecol. 169, 41–56.Google Scholar
- Devauchelle, N. and Mingant, C. (1991) Review of the reproductive physiology of the scallop, Pecten maximus, applicable to intensive aquaculture. Aquat. Living Resour 4, 41–51.Google Scholar
- Soudant, P., Marty, Y., Moal, J., Robert, R., Quéré, C., Le Coz, J.R. and Samain, J.F. (1996a) Effect of food fatty acid and sterol quality on Pecten maximus gonad composition and reproduction process. Aquaculture 143, 361–378.Google Scholar
- Soudant, P., Marty, Y., Moal, J. and Samain, J.F. (1996b) Fatty acids and egg quality in great scallop. Aquaculture International 4, 191–200.Google Scholar
- Strand, Ø. and Nylund, A. (1991) The reproductive cycle of the scallop Pecten maximus (Linnaeus, 1758) from two populations in western Norway, 60°N and 64°N. In: An International Compendium of Scallop Biology and Culture. Spec. Publ. (ed. Sandra E. Schumway), World Aquaculture Society, pp. 95–105.Google Scholar
- Utting, S.D. (1986) A preliminary study on growth of Crassostrea gigas larvae and spat in relation to dietary protein. Aquaculture 56, 123–138.Google Scholar
- Utting, S.D. and Millican, P.F. (1998) The role of diet in hatchery conditioning of Pecten maximus L.: a review. Aquaculture 165, 167–178.Google Scholar