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dc.contributor.authorBautista, Antonio Ma.
dc.contributor.authorCarlos, Manuel H.
dc.contributor.authorSan Antonio, Antonio I.
dc.date.accessioned2012-11-08T03:10:02Z
dc.date.available2012-11-08T03:10:02Z
dc.date.issued1988
dc.identifier.citationBautista, A. M., Carlos, M. H., & San Antonio, A. I. (1988). Hatchery production of Oreochromis niloticus L. at different sex ratios and stocking densities. Aquaculture, 73(1–4), 85–95.en
dc.identifier.issn0044-8486
dc.identifier.urihttp://hdl.handle.net/10862/1218
dc.descriptionContribution No. 228 of the Aquaculture Department, SEAFDEC.en
dc.description.abstractThe influence of various sex ratios and stocking densities on hatchery production of Nile tilapia, Oreochromis niloticus L., was studied in land-based (concrete tanks) and lake-based (hapa nets) systems. In both hatchery systems, egg and fry production was maximum at a sex ratio of 4:1 females to males and a density of 4 females per m2. Seed production varied significantly among treatments at different periods of the year. In concrete tanks, significantly high seed production of 12.98 and 11.77 eggs and fry per spawner per day was obtained in March and August, respectively. In hapa nets, irrespective of sex ratios, 10.18 seeds per spawner were collected daily in March. In relation to the broodstock density in concrete tanks, significantly bigger daily harvests of 13.41 and 13.00 eggs and fry per spawner were produced in late February and March, respectively. In hapa nets, daily harvests of 8.95 and 7.74 eggs and fry per spawner were the highest seed production levels which occurred in April and March, respectively. Seed production was significantly higher in concrete tanks than in hapa nets while insignificant differences (P>0.05) were found among sex ratio and broodstock density treatments.en
dc.language.isoenen
dc.publisherElsevieren
dc.subjectOreochromis niloticus
dc.titleHatchery production of Oreochromis niloticus L. at different sex ratios and stocking densitiesen
dc.typeArticleen
dc.citation.volume73
dc.citation.issue1–4
dc.citation.spage85
dc.citation.epage95
dc.citation.journalTitleAquacultureen
dc.subject.asfaHatcheriesen
dc.subject.asfaCulture tanksen
dc.subject.asfaYielden
dc.subject.asfaFish cultureen
dc.subject.asfaStocking densityen
dc.subject.asfaSex ratioen
dc.subject.asfaSeed productionen
dc.subject.asfaFryen
dc.subject.asfaFish eggsen
dc.subject.asfaBrood stocksen
dc.subject.asfaCage cultureen
dc.identifier.doi10.1016/0044-8486(88)90043-9


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  • AQD [1129]
    These papers were contributed by AQD staff to various national and international journals

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