Feeding ecology of the intensively fished Nile Perch, Lates niloticus, in Lake Victoria, Uganda

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dc.contributor.authorNkalubo, Winnie
dc.contributor.authorChapman, Lauren
dc.contributor.authorMuyodi, Fredrick
dc.date.accessioned2023-05-13T17:28:13Z
dc.date.available2023-05-13T17:28:13Z
dc.date.issued2014
dc.description.abstractThe diet of Nile Perch (8.0–121.0 cm total length [TL]) from the Ugandan waters of Lake Victoria was quantified through stomach content analysis of specimens collected from experimental catches and fish factory samples. A total of 7824 stomachs (5602 from experimental fishing and 2222 from factory samples) were examined, of which 34.8% contained food. Fish from the experimental catches were smaller (8.0–41.6 cm TL) and had a higher diversity of prey dominated by unidentifiable fish prey, haplochromine cichlids, Rastrineobola argentea, Odonata and Caridina nilotica, while larger fish (30.0–121.0 cm TL) from the factory samples had a predominance of fish remains and haplochromine cichlids. Nile Perch that had a high proportion of fish prey (versus invertebrates) in their stomachs showed a larger size for a given age, and were in a better condition (K = 1.24) than those that had primarily invertebrates (K = 1.10) in their stomachs. Nile Perch exhibited a much smaller size (15 cm versus 30 cm TL) at shift to piscivory in comparison to Nile Perch examined in earlier studies, when haplochromines were rare in Lake Victoria. The recovery of haplochromine cichlids coincident with declining Nile Perch densities illustrates the importance of developing sustainable management options that can define a proper balance between fishing mortality and Nile Perch predation.en_US
dc.identifier.citationWinnie Nkalubo , Lauren Chapman & Fredrick Muyodi (2014) Feeding ecology of the intensively fished Nile Perch, Lates niloticus, in Lake Victoria, Uganda, Aquatic Ecosystem Health & Management, 17:1, 62-69. http://dx.doi.org/10.1080/14634988.2014.880639en_US
dc.identifier.urihttp://dx.doi.org/10.1080/14634988.2014.880639
dc.identifier.urihttps://nru.uncst.go.ug/handle/123456789/8687
dc.language.isoenen_US
dc.publisherAquatic Ecosystem Health & Managementen_US
dc.subjectNile Perch dieten_US
dc.subjectHaplochromine resurgenceen_US
dc.subjectIntroduced speciesen_US
dc.subjectOntogenetic shiften_US
dc.subjectPiscivoryen_US
dc.titleFeeding ecology of the intensively fished Nile Perch, Lates niloticus, in Lake Victoria, Ugandaen_US
dc.typeArticleen_US
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