Show simple item record

dc.contributor.authorKawamura, Gunzo
dc.contributor.authorBagarinao, Teodora
dc.contributor.authorYong, Annita Seok Kian
dc.contributor.authorSao, Pei Wen
dc.contributor.authorLim, Leong Seng
dc.contributor.authorSenoo, Shigeharu
dc.date.accessioned2017-07-12T00:58:18Z
dc.date.available2017-07-12T00:58:18Z
dc.date.issued2017
dc.identifier.citationKawamura, G., Bagarinao, T., Yong, A. S. K., Sao, P. W., Lim, L. S., & Senoo, S. (2017). Optimum low salinity to reduce cannibalism and improve survival of the larvae of freshwater African catfish Clarias gariepinus. Fisheries Science, 83(4), 597-605.en
dc.identifier.issn0919-9268
dc.identifier.urihttp://hdl.handle.net/10862/3116
dc.description.abstractThe freshwater African catfish Clarias gariepinus is carnivorous and cannibalistic even during the larval and juvenile stages and this behavior causes economic losses in aquaculture. This study examined for the first time the effect of salinity on cannibalism, survival, and growth of African catfish larvae in the hatchery. Larvae (4 days old, median 7.8 mm TL, 2.8 mg BW) of the African catfish were reared for 21 days at nominal salinity 0, 1, 2, 3, 4, 5, 6, and 7 ppt. After 21 days, they grew to 10–39 mm (median 22 mm) and 10–490 mg (median 90 mg), with no significant difference by salinity treatments. Survival ratios were similarly low (24–31%) at 0, 1, 3, and 7 ppt and significantly higher (49–55%) at 2, 4, 5, and 6 ppt. Cannibalism was significantly lower, 15–30% at 4–6 ppt, than the 40–50% at 0–3 and 7 ppt. Size variation was lower at 4–6 ppt and higher at 0–3 and 7 ppt. We recommend hatchery rearing of African catfish at the optimum low salinity of 4–6 ppt rather than in full fresh water at least up to 21 days. This rearing method fosters larval welfare and improves hatchery production.en
dc.language.isoenen
dc.publisherSpringer Verlagen
dc.subjectFreshwater catfishen
dc.subjectSize variationen
dc.subjectClarias gariepinus
dc.titleOptimum low salinity to reduce cannibalism and improve survival of the larvae of freshwater African catfish Clarias gariepinusen
dc.typeArticleen
dc.identifier.doi10.1007/s12562-017-1088-y
dc.citation.volume83
dc.citation.issue4
dc.citation.spage597
dc.citation.epage605
dc.citation.journalTitleFisheries Scienceen
dc.subject.asfaInland water environmenten
dc.subject.asfaJuvenilesen
dc.subject.asfaLarvaeen
dc.subject.asfaSalinityen
dc.subject.asfaAquacultureen
dc.subject.asfaSalinity effectsen
dc.subject.asfaSurvivalen
dc.subject.asfaRearingen
dc.subject.asfaCannibalismen
dc.subject.asfaPredatorsen
dc.subject.asfaGrowthen
dc.subject.asfaCarnivoresen
dc.subject.asfaHatcheriesen
dc.subject.asfaFresh wateren
dc.subject.asfaMethodologyen
dc.subject.asfaRatiosen
dc.subject.asfaAggressive behaviouren
dc.subject.asfaOsmoregulationen
dc.identifier.essn1444-2906


Files in this item

FilesSizeFormatView

There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record