Differential recovery and spatial distribution pattern of haplochromine cichlids in the Mwanza Gulf of Lake Victoria

@article{KisheMachumu2015DifferentialRA,
  title={Differential recovery and spatial distribution pattern of haplochromine cichlids in the Mwanza Gulf of Lake Victoria},
  author={Mary A. Kishe-Machumu and Jacco C. van Rijssel and Jan H. Wanink and Frans Witte},
  journal={Journal of Great Lakes Research},
  year={2015},
  volume={41},
  pages={454-462}
}
Abstract Lake Victoria had a fish fauna dominated by 500 + species of haplochromines. In the 1980s, the haplochromines from sub-littoral areas of the Mwanza Gulf vanished almost completely. In the 1990s, a recovery of some haplochromine species was observed. To establish the status of the recovery, we studied their relative abundance and distribution pattern in the northern part of Mwanza Gulf in the years 2006 (monthly trawl hauls at 6 stations) and 2008 (bi-monthly trawl hauls at the same… Expand

Figures and Tables from this paper

Changing ecology of Lake Victoria cichlids and their environment: evidence from C13 and N15 analyses
TLDR
Findings that preserved specimens can be used to trace historical changes in fish ecology and the aquatic environment are confirmed and highlight the need for continued sampling as this information could be of essence for reconstructing and predicting the effects of environmental changes. Expand
Climatic variability in combination with eutrophication drives adaptive responses in the gills of Lake Victoria cichlids
TLDR
The changes in Lake Victoria's water quality coincide with fluctuations in cichlid gill surface area, suggesting that these fish can respond rapidly to environmental perturbations, but also that climatic variability, together with continued eutrophication, might be detrimental to the lake’s cichLid biodiversity. Expand
First evidence of microplastics in the African Great Lakes: Recovery from Lake Victoria Nile perch and Nile tilapia
Abstract Microplastic contamination in the African Great Lakes is currently unreported, and compared to other regions of the world little is known about the occurrence of microplastics in AfricanExpand
Historical Perspectives and Trends in Fisheries Research in Tanzania
This chapter traces the history and trends in fisheries research for the Tanzanian part of Lake Victoria and its basin back to the late nineteenth century when the haplochromine species wereExpand
Guilty as charged: Nile perch was the cause of the haplochromine decline in Lake Victoria
TLDR
The chronology indicates that accelerated eutrophication of the lake followed rather than preceded the haplochromine collapse, suggesting that eutophication was not its cause. Expand
Biogeography: Lakes—African Great Lakes
Abstract The African Great Lakes (AGL) are among the most ecologically and economically important aquatic biomes of the world. They are sources of nutritious fish in a region where malnutrition andExpand
Stomach contents and stable isotopes confirm ontogenetic diet shifts of Nile perch, Lates niloticus, in southern Lake Victoria
  • I. Cornelissen, J. Vijverberg, A.M. van den Beld, N.R. Helmsing, J.A.J. Verreth, L. Nagelkerke
  • Biology
  • Journal of Great Lakes Research
  • 2018
TLDR
Nile perch appears to rely more on this prey again, as it did in the 1980s, with the recent recovery of haplochromines in Lake Victoria. Expand
Stable isotope evidence from formalin–ethanol-preserved specimens indicates dietary shifts and increasing diet overlap in Lake Victoria cichlids
TLDR
A putative isotopic gradient effect is found along the 5-km-long research transect indicating that the studied demersal species are more stenotopic than previously thought. Expand
Microcomputed tomography used to link head morphology and observed feeding behavior in cichlids of Lake Malaŵi
TLDR
It is suggested that high‐resolution X‐ray computed tomography will permit scientists to infer life history and behavior characters of rare or extinct taxa from a detailed examination of morphology and linkages between morphology and behavior found in extant species. Expand
Ecosystem models of Lake Victoria (East Africa): exploring the sensitivity of ecosystem effects of fishing to model choice
TLDR
Compared outputs of two ecosystem models, Ecopath with Ecosim (EwE) and Atlantis, for Lake Victoria under different fishing pressure scenarios, suggest that different model formulations can provide similar qualitative predictions (direction of change), especially for targeted groups with similar trophic interactions and adequate data for parameterization and calibration. Expand
...
1
2
...

References

SHOWING 1-10 OF 62 REFERENCES
Differential decline and recovery of haplochromine trophic groups in the Mwanza Gulf of Lake Victoria
TLDR
The patterns of decline and recovery indicate that, though fishery played a role locally, predation by Nile perch and eutrophication were the main factors determining the fate of the haplochromines. Expand
Dynamics of the haplochromine cichlid fauna and other ecological changes in the Mwanza Gulf of Lake Victoria
Lake Victoria, the largest tropical lake in the world (Fig. 6.1), was until recently a typical cichlid lake. Eighty percent of the demersal ichthyomass of this East African lake consisted ofExpand
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
Inter-guild differences and possible causes of the recovery of cichlid species in Lake Victoria, Tanzania
TLDR
The study shows that resurgent haplochromines became the major prey of Nile perch, but there was no differential predation effect by Nile perich on detritivores and zooplanktivores, so it is not likely that these factors played an important role in differential resurgence of the two trophic groups in Lake Victoria. Expand
Patterns of the Remnant Cichlid Fauna in Southern Lake Victoria
During the years 1984–1987 Lake Victoria in East Africa experienced what is probably the largest mass extinction of contemporary vertebrates. Within a decade about 200 endemic species ofExpand
Initial Results of the Ecological Survey of the Haplochromine Cichlid Fishes From the Mwanza Gulf of Lake Victoria (Tanzania): Breeding Patterns, Trophic and Species Distribution
TLDR
Breeding of the bulk of the haplochromine species (phytoplankton/detritus eaters, zooplanktophages and some insectivores) in the sublittoral and littoral waters with a mud bottom appears to be seasonal, and an optimal trawl fishery recommendations based on the present data are discussed. Expand
Species Distinction and the Biodiversity Crisis in Lake Victoria
TLDR
By studying cichlid communities, trophic groups, and individual species, researchers uncovered differential diversity in gross morphology and the presence of intraspecific variation that made it difficult to distinguish among species. Expand
Cichlid species diversity in naturally and anthropogenically turbid habitats of Lake Victoria, East Africa
TLDR
Clear water seems to support differentiation in feeding techniques as well as year-round spawning, and both may facilitate species coexistence, which may explain why, since the decline of Nile perch, haplochromine densities have recovered, the numbers of hybrids increased and species diversity in the current eutrophic sub-littoral waters has remained 70 % lower than before the environmental changes. Expand
The invasion of an introduced predator, Nile perch (Lates niloticus, L.) in Lake Victoria (East Africa): chronology and causes
Nile perch, a large predatory fish, was introduced into Lake Victoria in 1954. The upsurge of Nile perch in Lake Victoria was first observed in the Nyanza Gulf, Kenya, in 1979. In Ugandan waters thisExpand
Dietary shift in benthivorous cichlids after the ecological changes in Lake Victoria
TLDR
The small benthivores shifted from a diet dominated by detritus and phytoplankton, supplemented with small quantities of midge larvae and zooplankon, to a diet of invertebrate preys of larger sizes, and apparently have a more carnivorous than a herbivorous diet. Expand
...
1
2
3
4
5
...