Effects of Salinity on Population Growth, Nutritive Value, and Feeding Cost of the Enriched Rotifer, Brachionus plicatilis.
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Accession number;01A0448112
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| Title;Effects of Salinity on Population Growth, Nutritive Value, and Feeding Cost of the Enriched Rotifer, Brachionus plicatilis. |
| Author;
KOISO MASAHIKO
(Nihonsaibaigyogyokyo)
HINO AKINORI
(Tokyo Univ., Graduate School of Agricaltural and Life Sci., JPN)
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Journal Title;Suisan Zoshoku
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Journal Code:Y0285A
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ISSN:0371-4217
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VOL.49;NO.1;PAGE.41-46(2001)
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| Figure&Table&Reference;FIG.4, TBL.2, REF.12 |
| Pub. Country;Japan |
| Language;Japanese |
| Abstract;The rotifer Brachionus plicatilis was cultured in five salinities (7, 14, 20, 27 and 34 psu). Population growth increased with a decline in salinity, and the daily growth rates at 7, 14 and 20 psu were beyond three times as much as that at 34 psu. The feeding cost for the production of 100 million individuals at 14 and 20 psu dropped to almost half of that at 34 psu. The mean generation time, the spawning interval, and the life span shortened remarkably in low salinities. The percentage of feeding rotifer as an index of hyper salinity tolerance and the nutritive value after 17-hours of enrichment were less when the rotifer was directly transferred from 7 or 14 psu to 34 psu than those when transferred from 20 or 27 psu. Considering the high population growth and the reduction in feeding cost, rotifer culture in low salinities should be adopted in actual seedling production. (author abst.) |
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