បង្ហាញកំណត់ត្រាសាមញ្ញសម្រាប់ធាតុ

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dc.contributor.authorSukumasavin, Naruepon
dc.date.accessioned2019-03-26T06:05:16Z
dc.date.available2019-03-26T06:05:16Z
dc.date.issued2008
dc.identifier.citationSukumasavin, N. (2008). Principles of fish seed production. In Handbook on Community-based Aquaculture for Remote Rural Areas of Southeast Asia (pp. 60-75). Bangkok, Thailand: Secretariat, Southeast Asian Fisheries Development Center.en
dc.identifier.isbn9789741387359
dc.identifier.urihttp://hdl.handle.net/20.500.12066/4648
dc.description.abstractTeleosts are poikilothermic animals whose sexual maturity depends on water temperature. Under tropical conditions, most fishes become sexually mature within the first year (Horvath et al., 1984). For example, Barbodes gonionotus matures sexually at the age of 8 months, when the length is only 8.5 cm (TL) and the weight 9 g (Paohorm, 1969). Although the fish is mature, the fertility of the eggs is poor. Thus, a low survival rate of the larvae has been reported from female B. gonionotus weighing 100 g. Therefore, the appropriate size of this species for breeding purposes is about 200 g (Joragun, 1978). In some tropical freshwater species, sexual maturation takes longer than one year: for example, 2 years in Morulius chrysophekadion (Unsrisong et al., 1990), 3 years in Osphronemus gouramy (Pasukdee, personal communication), 4 years in Probarbus jullieni (Rodrarung et al., 1990) and more than 10 years in Pangasianodon gigas (Sukumasavin, personal observation). [Extract]en
dc.publisherSecretariat, Southeast Asian Fisheries Development Centeren
dc.relation.ispartofseriesSEC/SP/90en
dc.subjectSouth East Asiaen
dc.subjecteggsen
dc.titlePrinciples of fish seed productionen
dc.typeBook chapteren
dc.citation.spage60
dc.citation.epage75
dc.subject.asfaseed productionen
dc.subject.asfabreeding stocken
dc.subject.asfabreedingen
dc.subject.asfagonadsen
dc.subject.asfaanimal reproductive organsen
dc.subject.asfaoocytesen
dc.subject.asfaSex charactersen
dc.subject.asfaspawningen
dc.subject.asfainduced ovulationen
dc.subject.asfaembryonic developmenten
dc.subject.asfaZygotesen
dc.subject.asfacellsen
dc.subject.asfaorganogenesisen
dc.subject.asfamorphogenesisen
dc.subject.asfaIncubationen
dc.subject.asfahatchingen
dc.subject.asfatemperatureen
dc.subject.asfadissolved oxygenen
dc.subject.asfaIncubatorsen
dc.citation.bookTitleHandbook on Community-based Aquaculture for Remote Rural Areas of Southeast Asiaen


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បង្ហាញកំណត់ត្រាសាមញ្ញសម្រាប់ធាតុ