បង្ហាញកំណត់ត្រាសាមញ្ញសម្រាប់ធាតុ

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dc.contributor.authorToledo, Joebert D.
dc.contributor.authorDoi, Masanori
dc.contributor.authorDuray, Marietta
dc.contributor.editorMacKinlay, D.
dc.contributor.editorEldridge, M.
dc.date.accessioned2011-06-22T09:35:42Z
dc.date.available2011-06-22T09:35:42Z
dc.date.issued1996
dc.identifier.urihttp://hdl.handle.net/10862/417
dc.description.abstractThe viability of milkfish eggs and larvae after simulated and actual transport was investigated. Naturally-spawned milkfish eggs were collected and subjected to simulated or actual transport at early cleavage stage (stage 1), blastula (stage 2), gastrula (stage 3), "eyed" (stage 4), or newly-hatched larvae (stage 5). Replicate samples in aerated plastic jars served as controls. Mean hatching and survival rates and the percentage of newly-hatched larvae were significantly affected by the modes of transport and by the stage of embryonic development at transport. Eggs transported at the 'eyed' stage had higher viability compared to those transported at cleavage, blastula, or gastrula stages. There was no significant difference in the mean survival rate of the larvae after 26 days of rearing. However, the percentage of 45 day old larvae with apparent morphological abnormalities was lower in groups transported at stages 4 and 5. These observations indicate that milkfish eggs should be handled and transported during the late embryonic stages to minimize mortalities and the incidence of abnormalities in larvae.en
dc.language.isoenen
dc.publisherAmerican Fisheries Society, Physiology Sectionen
dc.relation.ispartofIn: MacKinlay, D., Eldridge, M. (eds.). The Fish Egg: Its Biology and Culture Symposium Proceedings. International Congress on the Biology of Fishes, 14-18 July 1996, San Francisco State University. Bethesda, Maryland: American Fisheries Society, Physiology Section. pp. 51-58en
dc.relation.urihttp://fishphysiology.org/wp-content/uploads/2014/02/toledo1.pdf
dc.subjecteggsen
dc.subjectPhilippinesen
dc.subjectmilkfishen
dc.subjectChanos chanosen
dc.subject.lccVF SP 0221
dc.titleViability of milkfish eggs and larvae after simulated and actual transporten
dc.typeConference paperen
dc.citation.spage51
dc.citation.epage58
dc.subject.asfalarvaeen
dc.subject.asfatransportationen
dc.citation.conferenceTitleThe Fish Egg: Its Biology and Culture Symposium Proceedings. International Congress on the Biology of Fishes, 14-18 July 1996, San Francisco State Universityen
dc.subject.scientificNameChanos chanos


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បង្ហាញកំណត់ត្រាសាមញ្ញសម្រាប់ធាតុ