Effect of initial stocking size of the predatory African sharptooth catfish (Clarias gariepinus) on recruits, growth performance, survival and yield of mixed-sex Nile tilapia (Oreochromis niloticus) in concrete tank culture system

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dc.contributor.authorSamwel Mchele Limbu
dc.contributor.authorAmon P., Shoko
dc.contributor.authorLamtane, Hieromin A.
dc.contributor.authorShirima, Evantuce D.
dc.contributor.authorKishe-Machumu, Mary A.
dc.contributor.authorMgana, Huruma F.
dc.contributor.authorMgaya, Yunus D.
dc.date.accessioned2016-01-25T15:15:37Z
dc.date.available2016-01-25T15:15:37Z
dc.date.issued2015-01-21
dc.description.abstractProlific breeding and production of high percentage of recruits are main problems in mixed-sex Nile tilapia (Oreochromis niloticus) culture in earthen ponds. The current study assessed the efficiency of different sizes of African sharptooth catfish (Clarias gariepinus) in controlling recruitment in mixed-sex Nile tilapia cultured in tanks and its effect on growth performance, percentage survival and yield. Three treatments consisting of triplicate ponds stocked with mixed-sex Nile tilapia in monoculture and in polyculture with large (62.50 ± 3.26 g) and small (40.00 ± 2.68 g) African sharptooth catfish were fed on a 297.50 g kg-1 crude protein diet for 126 days. Results showed that, the number of recruits was significantly lower in larger African sharptooth catfish predator than smaller ones and monoculture of Nile tilapia. Polyculture with larger African sharptooth catfish resulted in significantly higher growth performance of Nile tilapia. Large African sharptooth catfish in polyculture reduced the amount of small, low-value recruits, while the yield of large and high value Nile tilapia was increased. This study revealed that fish farmers can reduce prolific breeding, obtain higher growth performance and produce larger size of marketable Nile tilapia by predominantly stocking ponds with large African sharptooth catfish predator of at least 60 g.en_US
dc.description.sponsorshipWe express our sincere thanks to Tanzania Commission for Science and Technology (COSTECH) through ‘‘KILIMO KWANZA’’ programme for provision of a research grant. Tanzania Fisheries Research Institute (TAFIRI), the University of Dar es Salaam and Sokoine University of Agriculture (SUA) are acknowledged for granting permission for authors to participate in the study. SUA is also acknowledged for provision of research facilities.en_US
dc.identifier.citationLimbu, S.M., Shoko, A.P., Lamtane, H.A., Shirima, E.D., Kishe-Machumu, M.A., Mgana, H.F. and Mgaya, Y.D., 2015. Effect of initial stocking size of the predatory African sharptooth catfish (Clarias gariepinus) on recruits, growth performance, survival and yield of mixed-sex Nile tilapia (Oreochromis niloticus) in concrete tank culture system. International Aquatic Research, 7(1), pp.63-73.en_US
dc.identifier.other10.1007/s40071-014-0093-3
dc.identifier.urihttp://hdl.handle.net/123456789/190
dc.language.isoenen_US
dc.publisherSpringeren_US
dc.subjectPredatoren_US
dc.subjectRecruitmenten_US
dc.subjectPolycultureen_US
dc.subjectMonocultureen_US
dc.subjectProlific breedingen_US
dc.subjectProductionen_US
dc.titleEffect of initial stocking size of the predatory African sharptooth catfish (Clarias gariepinus) on recruits, growth performance, survival and yield of mixed-sex Nile tilapia (Oreochromis niloticus) in concrete tank culture systemen_US
dc.typeJournal Article, Peer Revieweden_US
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