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Feeding habits of the clupeid Limnothrissa miodon (Boulenger), in Lake Kivu

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Abstract

A limnological sampling programme implemented during 1980 in Lake Kivu, Rwanda, confirmed a seasonal increase of the pelagic plankton biomass at the end of the dry season during the windy period of August/September. From plankton samples taken in the littoral and pelagic zones of the Lake it was concluded that a successful introduction of the freshwater clupeid Limnothrissa miodon Boulenger, during 1958–1960, had not obviously influenced the species composition of the Copepoda in the Lake.

Examination of stomach contents of different length classes of Limnothrissa proved that the Kivu clupeid is not a strict planktonphagic species. Its diet is adapted to its life cycle and inshore/offshore migration patterns. In pelagic waters of the lake it is an exclusive plankton feeder, while in littoral waters it has more littoral bound feeding habits. Cannibalism was observed among individuals larger than 100 mm, near the margins of the lake.

Echosoundings and periodic observations on stomach contents support the hypothesis that Limnothrissa feeds in the late afternoon and digests its food during the night, while a second feeding/digestion cycle starts in the early morning, at sunrise.

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Authors and Affiliations

  1. Organisation for the Improvement of Inland Fisheries, Buxtehudelaan 1, 3438 EA, Nieuwegein, the Netherlands

    H. H. de Iongh

  2. International Agricultural Centre, P. O. Box 88, 6700 AB, Wageningen, the Netherlands

    P.C. Spliethoff

  3. Pêcherie Ihema, B. P. 905, Kigali, Rwanda

    V. G. Frank

Authors
  1. H. H. de Iongh
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  2. P.C. Spliethoff
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  3. V. G. Frank
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de Iongh, H.H., Spliethoff, P. & Frank, V.G. Feeding habits of the clupeid Limnothrissa miodon (Boulenger), in Lake Kivu. Hydrobiologia 102, 113–122 (1983). https://doi.org/10.1007/BF00006074

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  • DOI: https://doi.org/10.1007/BF00006074

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