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dc.contributor.authorTan-Fermin, Josefa D.
dc.date.accessioned2013-01-30T08:57:24Z
dc.date.available2013-01-30T08:57:24Z
dc.date.issued1991
dc.identifier.citationTan-Fermin, J. D. (1991). Suitability of different formalin-containing fixatives for the eggs of freshwater Asian catfish Clarias macrocephalus (Gunther). The Israeli Journal of Aquaculture-Bamidgeh, 43(2), 57-61.en
dc.identifier.issn0792-156X
dc.identifier.urihttp://hdl.handle.net/10862/1362
dc.description.abstractThe suitability of different formalin-containing fixatives was tested for the eggs of the catfish (Clarias macrocephalus) by comparing the osmotic pressure of several fixatives with catfish plasma and measuring the size of the eggs at several intervals after fixation. The test solutions consisted of Gilson fluid, 0.5% to 10% buffered formalin, 0.1% to 1% unbuffered formalin with 0.7% sodium chloride (NaCl) and 0.1% to 1% unbuffered formalin with 0.9% NaCl. The osmotic pressure of 1% phosphate-buffered formalin was not significantly different from the catfish plasma, hence it was considered to be the most suitable of all the fixatives tested. Measurement of catfish eggs can be done within 0.5 to 120 hours after fixation in this solution because the rate of swelling (4% to 11% of the size of fresh samples) has been determined. This information is important in induced breeding work of catfish, especially on studies involving the use of egg size.en
dc.language.isoenen
dc.publisherSociety of Israeli Aquaculture and Marine Biotechnologyen
dc.subjectfreshwater catfishen
dc.subjectClarias macrocephalusen
dc.titleSuitability of different formalin-containing fixatives for the eggs of freshwater Asian catfish Clarias macrocephalus (Gunther)en
dc.typeArticleen
dc.citation.volume43
dc.citation.issue2
dc.citation.spage57
dc.citation.epage61
dc.citation.journalTitleThe Israeli Journal of Aquaculture-Bamidgehen
dc.subject.asfafish cultureen
dc.subject.asfafixativesen
dc.subject.asfainduced ovulationen


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