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Lake Victoria

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Journal Article
Aquatic Ecosystem Health & Management (2013) 16 (3): 279–287.
Published: 01 July 2013
...Martin Van der Knaap Four decades after the initial export of Nile Perch from Lake Victoria, which reached an annual maximum harvest of 330,000 tons in 2000 (LVFO, 2009), Nile Perch resources are under pressure. With a form of co-management in place, it is not clear who is responsible for resources...
Journal Article
Aquatic Ecosystem Health & Management (2010) 13 (3): 277–283.
Published: 31 August 2010
...E. F. B. Katunzi; A. Mbonde; R. Waya; H. D. J. Mrosso The catchment and water chemistry of Lake Victoria are greatly influenced by the inflow of rivers and the alternation of the dry and wet seasons. The ecological integrity of the lake has been altered as a result of changes in its physical...
Journal Article
Aquatic Ecosystem Health & Management (2003) 6 (3): 299–310.
Published: 01 September 2003
...I. G. Cowx; M. van der Knaap; L. I. Muhoozi; A. Othina The fisheries of Lake Victoria are highly dispersed and catch statistical information is insufficient for supporting management. Catch assessment surveys for the three riparian countries were found to be weak or inadequate and a strategy for...
Journal Article
Aquatic Ecosystem Health & Management (2002) 5 (3): 245–254.
Published: 01 September 2002
...M. van der Knaap; M. J. Ntiba; I. G. Cowx The fisheries of Lake Victoria have always been dynamic and the relevant authorities have continually tried to manage them. During the second half of the last century, numerous changes took place and fisheries managers had to cope with influences other than...
Journal Article
Aquatic Ecosystem Health & Management (2009) 12 (2): 197–205.
Published: 27 May 2009
...Phillip Okoth Raburu; Frank Onderi Masese; Christopher Aura Mulanda The water quality of many streams in Lake Victoria Basin, Kenya is affected by agricultural intensification, municipal and industrial effluent, as well as water abstraction, livestock and deforestation. Management efforts have been...
Journal Article
Aquatic Ecosystem Health & Management (2007) 10 (4): 368–380.
Published: 28 November 2007
...Y. L. Budeba; I. G. Cowx The major commercial fish species of Lake Victoria at the present time are Lates niloticus, Oreochromis niloticus and Rastrineobola argentea. The contribution of Caridina nilotica in their diet was studied in the Tanzanian waters of Lake Victoria between March, 1999 and...
Journal Article
Aquatic Ecosystem Health & Management (2007) 10 (4): 381–391.
Published: 28 November 2007
...Y. L. Budeba; I. G. Cowx The contribution of Caridina nilotica in the Rastrineobola argentea (dagaa) fishery was assessed at nine beaches in the Tanzanian part of Lake Victoria from May, 2001 to April, 2002. Additional data on dagaa and Caridina catches from Sweya beach between October, 2000 and...
Journal Article
Aquatic Ecosystem Health & Management (2007) 10 (4): 407–415.
Published: 28 November 2007
... in Lake Victoria. R. argentea may have a low absolute fecundity of a few thousand eggs, but its relative fecundity by weight is enormous: 70 times higher than for L. niloticus and almost 4,000 times that of the tilapia species O. niloticus and O. esculentus. Its food consists mainly of zooplankton...
Journal Article
Aquatic Ecosystem Health & Management (2007) 10 (4): 458–466.
Published: 28 November 2007
...Oliva C. Mkumbo; Enock Mlaponi As gillnet yields of Nile perch stagnated in the middle of the 1990s, the hook and line fishery intensified in Lake Victoria. Frame surveys show that the number of hooks used in this fishery grew tenfold in the Tanzanian waters between 1992 and 2002. The increased use...
Journal Article
Aquatic Ecosystem Health & Management (2007) 10 (4): 449–457.
Published: 28 November 2007
... studies were conducted on Lake Victoria from 1997 to 2001, with the aim to assess the status of the stocks, in particular of Nile perch. This paper summarises the findings for the Tanzanian part of the lake and makes reference to the Kenyan and Ugandan national waters for comparison. Both fisheries...
Journal Article
Aquatic Ecosystem Health & Management (2007) 10 (4): 434–442.
Published: 28 November 2007
... Oreochromis niloticus from the Nyanza Gulf of Lake Victoria, Kenya. Studies on the diet of O. niloticus collected by demersal trawl and seining between 1998 and 2000 were also conducted. Length frequency data were analyzed using the FISAT software (an FAO-ICLARM Stock Assessment Tool package). The L ∞ had a...
Journal Article
Aquatic Ecosystem Health & Management (2007) 10 (4): 443–448.
Published: 28 November 2007
... strategies exhibited by O. niloticus in the Nyanza Gulf of Lake Victoria. The study revealed that size at maturity had decreased concurrently with increasing fishing mortality. Observations on reproductive effort point to a fish species under stress. It is observed that the behavioural change in O. niloticus...
Journal Article
Aquatic Ecosystem Health & Management (2007) 10 (4): 392–397.
Published: 28 November 2007
...Jan H. Wanink; José C. A. Joordens We studied the diet of Brycinus sadleri in Lake Victoria after extensive environmental changes during the 1980s. To check for diet expansion following these changes, as observed in some other fish species, we compared our results with data from the 1950s. Stomach...
Journal Article
Aquatic Ecosystem Health & Management (2007) 10 (4): 416–433.
Published: 28 November 2007
...F. Witte; J. H. Wanink; M. Kishe-Machumu; O. C. Mkumbo; P. C. Goudswaard; O. Seehausen Lake Victoria had a fish fauna dominated by 500+ species of haplochromine cichlids that made up more than 80% of the fish mass. The five main trophic groups caught with bottom trawlers in the sub-littoral areas...
Journal Article
Aquatic Ecosystem Health & Management (2007) 10 (4): 398–406.
Published: 28 November 2007
...R. Tumwebaze; I. Cowx; S. Ridgway; A. Getabu; D. N. MacLennan Following recent changes in the ecosystem of Lake Victoria resulting from the introduction of Nile perch, Lates niloticus, in the 1960s, there is urgent need for information on which to formulate rational exploitation and management of...
Journal Article
Aquatic Ecosystem Health & Management (2007) 10 (4): 481–483.
Published: 28 November 2007
... shrimps, insect nymphs and fish. Reduced competition has led to a situation where adult fish now take surface insects at night. These shifts reflect optimal foraging behaviour and diel vertical migration. Lake Victoria's original fish fauna was dominated by haplochromines representing over 80% of the...
Journal Article
Aquatic Ecosystem Health & Management (2015) 18 (2): 212–220.
Published: 03 April 2015
...Athanasio S. Mbonde; Lewis Sitoki; Rainer Kurmayer This study was carried out in order to investigate the spatial variation of algal toxin (microcystin) concentrations along the shoreline of Lake Victoria. A total of 16 nearshore stations differing in connectivity to the main lake basin were...
Includes: Supplementary data
Journal Article
Aquatic Ecosystem Health & Management (2005) 8 (2): 147–157.
Published: 01 April 2005
...Jones R. Muli Benthic macroinvertebrates in the Kenyan waters of Lake Victoria were sampled on a monthly basis from March 1994 to March 1995. Ekman grab samples were obtained from 10 stations representing all the major ecological zones of the lake. The aim of the study was to estimate the abundance...
Journal Article
Aquatic Ecosystem Health & Management (2014) 17 (1): 52–61.
Published: 02 January 2014
...Anthony Taabu-Munyaho; Chrisphine S. Nyamweya; Lewis Sitoki; Robert Kayanda; Inigo Everson; Gudrún Marteinsdóttir The distribution and densities of three pelagic fish taxa (Nile Perch, Lates niloticus, Rastrineobola argentea [Dagaa], and the haplochromine cichlids) in Lake Victoria were estimated...
Includes: Supplementary data
Journal Article
Aquatic Ecosystem Health & Management (2014) 17 (1): 80–89.
Published: 02 January 2014
...W. O. Ojwang; J. E. Ojuok; C. Nyamweya; S. Agembe; M. Owili; E. Yongo; E. O. Wakwabi The Lake Victoria ecosystem once hosted a diverse fish community dominated by a large species flock of haplochromine cichlids. Today this fish assemblage is highly altered by anthropogenic activities, with at least...