Genetic sex manipulation of Nile Tilapia: The alternative method for production of a high percentage of male seeds in a hatchery scale by YY-female technology
DC Field | Value | Language |
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dc.contributor.author | 노충환 | - |
dc.contributor.author | 남윤권 | - |
dc.contributor.author | 김동수 | - |
dc.contributor.author | 김종만 | - |
dc.date.accessioned | 2020-07-17T13:50:58Z | - |
dc.date.available | 2020-07-17T13:50:58Z | - |
dc.date.created | 2020-02-11 | - |
dc.date.issued | 2002-10-24 | - |
dc.identifier.uri | https://sciwatch.kiost.ac.kr/handle/2020.kiost/32457 | - |
dc.description.abstract | The Nile Tilapia, Oreochromis niloticus, is worldwide-cultured fish species for their fast growth. However the production of this species has long been hindered by precious maturity of female. Recently YY-male technology has been introduced for producing all male seeds depend on sex determination mechanism, XX-female; XY-male, of this species (Scott et al., 1989; Mair et al., 1997; Tuan, et al., 1998). In this study, we compared the reproductive ability of YY-male and YY-female and suggest the alternative method for production of a high percentage of male seeds in hatchery scale by YY-female technology.The gametes produced from YY-male with XX-female crosses showed significantly lower hatching rates than that of XX-female with XY-male crosses. Otherwise, hatching and survival rates in early developmental stage (up to swim-up stage) of gametes produced from YY-female with both XY-male and XX-male crosses presented similar with that of XX-female with XY-male crosses. Due to the low fecundity of YY-males in experiment I, we decided that YY-female technology would be more reliable to produce all male seeds in hatchery scale. In experiment II, mass produced progenies from tanks stocked YY-females and XX-males showed 93.5% (S.D. 6.4%) of male. YY-female presented relatively lower spawning frequency than that of normal females, but not differ in amount of seed produced and mean spawning interval. We concluded that YY-female technology with improved seed production methodology (Noh et al., 1997) enables the production of a high percentage of male seeds in hatchery scale. | - |
dc.description.uri | 1 | - |
dc.language | English | - |
dc.publisher | European Aquaculture Society | - |
dc.relation.isPartOf | Aquaculture Europe 2002 | - |
dc.title | Genetic sex manipulation of Nile Tilapia: The alternative method for production of a high percentage of male seeds in a hatchery scale by YY-female technology | - |
dc.type | Conference | - |
dc.citation.endPage | 382 | - |
dc.citation.startPage | 381 | - |
dc.citation.title | Aquaculture Europe 2002 | - |
dc.contributor.alternativeName | 노충환 | - |
dc.contributor.alternativeName | 김종만 | - |
dc.identifier.bibliographicCitation | Aquaculture Europe 2002, pp.381 - 382 | - |
dc.description.journalClass | 1 | - |