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An evaluation of frozen Artemia as a dietary supplement for the stimulation of reproduction in penaeid shrimp
Browdy, C.L.; Hadani, A.; Samocha, T.M.; Loya, Y. (1989). An evaluation of frozen Artemia as a dietary supplement for the stimulation of reproduction in penaeid shrimp, in: De Pauw, N. et al. (Ed.) Aquaculture: a biotechnology in progress: volume 1. pp. 617-623
In: De Pauw, N. et al. (1989). Aquaculture: a biotechnology in progress: volume 1. European Aquaculture Society: Bredene. ISBN 90-71625-03-6. 1-592 pp.
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| Beschikbaar in | Auteurs |
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Documenttype: Congresbijdrage
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| Auteurs | | Top |
- Browdy, C.L.
- Hadani, A.
- Samocha, T.M.
- Loya, Y.
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| Abstract |
Interest has been focused on the supplementation of broodstock diets with adult brine shrimp to induce maturation in penaeid shrimp. The effects of feeding an Artemia supplement were evaluated in a controlled experimental system developed to study the reproductive performance of individual female Penaeus semisulcatus. Three feeding regimes were compared; 1) a standard diet (SD) consisting of freshly frozen marine fish, shrimp, and squid; 2) the standard diet with a supplement of freshly frozen reproductive adult Artemia (SD+A); and 3) the standard diet with a supplement of an Artemia homogenate in seawater (SD+H). The results from the first experiment showed a significant increase in the reproductive rate for the SD+A treatment, as measured by daily production of spawns, eggs, nauplii and zoea. Furthermore, the addition of a supplement of whole Artemia reflected in a trend towards an increase in the number of eggs, nauplii, and zoea per spawn. No differences were apparent in the rate of fertilization between treatments, but a trend towards increased hatch and metamorphosis was observed for the SD+A treatment. In a second experiment the reproductive rate did not differ significantly between the SD and SD+A treatments. No significant differences were found in the number of eggs and nauplii per spawn, between the SD and SD+A treatment groups, but the average number of zoea per spawn was significantly higher in the Artemia treatment. No differences were apparent in the fertilization rate, but a trend toward increased hatching and a significant increase in metamorphosis was observed tor the females fed Artemia . The feeding of Artemia did not consistently stimulate the reproductive performance, but, significant increases were observed. Further research is needed to isolate active factors affecting reproduction in order to achieve more predictable results. |
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