The Shrimp Caridina nilotica in Lake Victoria (East Africa), Before and After the Nile Perch Increase

@article{Goudswaard2005TheSC,
  title={The Shrimp Caridina nilotica in Lake Victoria (East Africa), Before and After the Nile Perch Increase},
  author={K. Goudswaard and F. Witte and J. Wanink},
  journal={Hydrobiologia},
  year={2005},
  volume={563},
  pages={31-44}
}
The shrimp Caridina nilotica is a major prey of the introduced Nile perch in Lake Victoria. In spite of heavy predation, the density of shrimps increased after the Nile perch boom and the concomitant disappearance of the haplochromine cichlids. In the same period, the mean size of gravid shrimps and the size at first maturity declined. This seems to indicate an increased predation pressure on adult shrimps. Before the Nile perch upsurge, specialised shrimp eaters and piscivores, among the… Expand

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References

SHOWING 1-10 OF 72 REFERENCES
Changes in the diet of Nile perch, Lates niloticus (L), in the Mwanza Gulf, Lake Victoria
TLDR
Seasonal differences in diet composition probably reflect seasonal fluctuations in the abundance of the main prey species. Expand
The catfish fauna of Lake Victoria after the Nile perch upsurge
Stocks of the indigenous catfish species of Lake Victoria have decreased dramatically since the beginning of the 1980s. This decline coincided with the Nile perch boom and concomitant ecologicalExpand
Effects of Nile perch (Lates niloticus) introduction into Lake Victoria, East Africa, on the diet of Pied Kingfishers (Ceryle rudis)
In recent years the ichthyofauna of Lake Victoria, the world's largest tropical lake, has gone through dramatic changes. The population of Nile perch, a large predator which has been introduced intoExpand
Changes in the feeding biology of the Nile perch, Lates niloticus (L.) (Pisces: Centropomidae), in Lake Victoria, East Africa since its introduction in 1960, and its impact on the native fish community of the Nyanza Gulf
TLDR
The present investigation has revealed that the diet of Lates niloticus is now almost entirely comprised of Caridina nilotica, a small microphagous prawn, and juvenile Lates, a result of the shattering impact Lates predation has had on the native fishes, which have been virtually wiped out. Expand
The decline of the native fishes of lakes Victoria and Kyoga (East Africa) and the impact of introduced species, especially the Nile perch, Lates niloticus, and the Nile tilapia, Oreochromis niloticus
TLDR
The Nile perch, Lates niloticus, a large, voracious predator which was introduced into these lakes about the middle of the century along with several tilapiine species, is thought to have caused the reduction in the stocks of several species. Expand
Cascading Effects of the Introduced Nile Perch on the Detritivorous/Phytoplanktivorous Species in the Sublittoral Areas of Lake Victoria
TLDR
Preliminary evidence is presented that the stock of the detritivorous haplochromines that formerly comprised most of the demersal ichthyomass has been replaced by the prawn, and the possible mechanisms underlying this major change in the food web are discussed. Expand
The destruction of an endemic species flock: quantitative data on the decline of the haplochromine cichlids of Lake Victoria
TLDR
The species composition of haplochromines in a research area in the Mwanza Gulf of Lake Victoria prior to the Nile perch upsurge is described, which would imply that approximately 200 of the 300+ endemic haplochromaine species have already disappeared, or are threatened with extinction. Expand
The shift to smaller zooplankton in Lake Victoria cannot be attributed to the ‘sardine’ Rastrineobola argentea (Cyprinidae)
TLDR
The decline of large zooplankters in the lake cannot be explained by intensified predation after the replacement of zoopLanktivorous haplochromines by dagaa and Nile perch, and increased eutrophication, resulting in a shift in predominance from diatoms to cyanophytes, is suggested as an alternative explanation for the shift in zoopalankton composition. Expand
Caridina Nilotica : Spatial Distribution and Egg Production in Lake Victoria, Uganda
The freshwater prawn Caridina nilotica, a major prey for juvenile Nile perch, Lates niloticus, is abundant in both shallow and deep regions of Lake Victoria. The shrimp exploits the full water columnExpand
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5
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