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Predator-prey relationships, population dynamics and fisheries productivities of large african lakes Lates niloticus has become highly successful in Lake Victoria due to the fact that it is a more efficient predator than any endemic species in the lake. Holden, M.J., 1967 The systematics of the genus Lates niloticus (Teleostei: Centropomidae) in Lake Albert, East Africa. Hopson, A.J., 1975 Preliminary observations on the biology of Lates niloticus in Lake Rudolf. www.fao.org /DOCREP/005/S7047E/S7047E05.htm   (3949 words)

Nile perch - Wikipedia, the free encyclopedia The Nile perch (Lates niloticus) is a species of freshwater fish in family Centropomidae of order Perciformes. Originally classified as Labrus niloticus, among the marine wrasses, the species is also known as the African snook and by a large number of local names in various African languages. The Nile perch was introduced to Lake Victoria, in East Africa, in the 1960s, where it is fished commercially and has had a catastrophic effect on local fishes, causing the extinction of several hundred native species. en.wikipedia.org /wiki/Lates_niloticus   (522 words)

Lates niloticus The status of the Nile perch Lates niloticus L: The status of the Nile perch Lates niloticus L. fishery in relation to exploitation levels in Tanzanian waters of Lake Victoria. (Myxozoa: Myxosporea), infecting the Nile perch Lates niloticus (Teleostei: Centropomidae). Chapter 5: Lates niloticus is the Latin name of this fish and somehow because of the use of this common name the name of the fish became misconstrued to mean tilapia... specieslist.com /fish_species/L/Lates_niloticus.shtml   (1629 words)

ADW: Lates niloticus: Information Lates niloticus (Nile perch) is widespread throughout the Ethiopian Region of Africa, occurring commonly in all major river basins including Nile, Chad, Niger, Senegal and Volta. Acere, T. Observations on the biology, age, growth, maturity and sexuality of Nile perch, *Lates niloticus* (Linne), and the growth of its fishery in the northern waters of Lake Victoria. Observation on Nile perch, *Lates niloticus* (L.), 1758, in the Tanzanian waters of Lake Victoria. animaldiversity.ummz.umich.edu /site/accounts/information/Lates_niloticus.html   (1169 words)

Aquatic Ecosystem Health and Management Society A study on the catches, effort, and size distribution of the three commercially important fish species, Lates niloticus, Oreochromis niloticus and Rastrineobola argentea potentially fished by artisanal fishermen of Lake Victoria, Tanzania was done from October 1997 to December 2000. niloticus in 1999 and 2000 increased from 22.3 to 24.3 kg boat-1 day-1 and an estimated annual total catch was 26,489,100 and 15,584,900 metric tons respectively. Lates niloticus was caught in gill nets ranging from 4.5" to 7" and long lines of hook size numbers 7 to 13. www.aehms.org /glow_post_nsinda.html   (470 words)

Aquatic Ecosystem Health and Management Society A total of 793 hauls, of 30 minutes duration, were taken during experimental bottom trawl surveys in the Uganda sector of Lake Victoria during the period November 1997 to December 2000 to estimate composition, distribution and abundance of the major fish species in waters 4 to 60 m deep. From the swept area method, the abundance index for all fish species living within 3-m column of water from the bottom in the 4-40 m depth zone in the Uganda portion of the lake was estimated at around 142,000 tonnes during the period 1999-2000. The paper recommends that measures be put in place to reduce or stop capture of immature fish, human activities that lead to reduction in suitable water habitat for fish should be minimised, and regular surveys should be continued to monitor possible changes of the fish stocks in the lake. www.aehms.org /glow_abs_okaronon.html   (662 words)

IngentaConnect Cascading effects of introduced Nile perch (Lates niloticus) on t...   (Site not responding. Last check: 2007-10-25) Nile tilapia (Oreochromis niloticus L.) is the dominant of the introduced tilapiines in many East African lakes and has flourished in the presence of introduced Nile perch (Lates niloticus L.). niloticus exhibits increased omnivory in response to a decline in abundance of haplochromine cichlids. Lates niloticus) on the foraging ecology of Nile tilapia (Oreochromis niloticus)" title="post to CiteUlike">Post to CiteUlike www.ingentaconnect.com /content/mksg/eff/2006/00000015/00000004/art00013   (306 words)

IngentaConnect Feeding habits of the Nile perch, Lates niloticus (L.) (Pisces: C...   (Site not responding. Last check: 2007-10-25) Diet composition and ontogenetic diet shift of the Nile perch, Lates niloticus (L.) were studied from 411 fish samples (1.9 cm to 192 cm TL) collected from February 1995 to May 1996. niloticus and occurred in 49.4% of the stomachs examined, constituted 38.02% of the total number and 70.44% of the total volume of the prey. Lates niloticus (L.) (Pisces: Centropomidae) in Lake Chamo, Ethiopia" title="post to CiteUlike">Post to CiteUlike www.ingentaconnect.com /content/aae/sinet/2005/00000028/00000001/art00007   (360 words)

<AGRIS.WEB>CAT_JA Document 655 of 696   (Site not responding. Last check: 2007-10-25) Forteen fish taxa (excluding the Haplochromis) were recorded with Lates niloticus consisting the bulk (97) of the fish retained. Haplochromis and L. niloticus were encountered in all areas sampled while Nile tilapia (Oreochromis niloticus) and other tilapinines were restricted to waters less than 20 metres deep. Only two of the fifteen fish taxa (Haplochromis and L. niloticus) were recorded in waters deeper than 30 metres and the bulk of the fish by weight (92) was obtained in waters less than 30 metres. www2.fao.org /BASIS/AGRIS/Web/Cat_ja/DDW?W%3Deni++INC+%27UGANDA%27%26M%3D655%26K%3D96127639%26R%3DY%26U%3D1   (184 words)

EXECUTIVE SUMMARY   (Site not responding. Last check: 2007-10-25) niloticus is, however, capable of preying on the species which have been overfished and could have prevented their stocks from recovering from overfishing. niloticus in the lake has virtually eliminated a number of endemic species resulting into the loss of genetic diversity accompanied by a loss of trophic diversity; the transformation of the fish community coincided with profound eutrophication (algal blooms, fish kills, hypolimnetic anoxia) which might be related to alterations of the lake's food-web structure. Achieng, A.P. (1990) The impact of the introduction of Nile perch, Lates niloticus (L.) on the fisheries of Lake Victoria. www.iucn.org /places/lakevictoria/5.htm   (18012 words)

issg Database: Ecology of Lates niloticus Synonyms: Lates albertianus Worthington, 1932, Lates niloticus rudolfianus Worthington, 1932, Lates niloticus var. The Nile perch (Lates niloticus) is a large freshwater fish. It rose to become the main fishery species in the lake in the late 1990s and the basis of a huge export industry. www.issg.org /database/species/ecology.asp?si=89   (798 words)

THE SIZE STRUCTURE OF Lates niloticus L   (Site not responding. Last check: 2007-10-25) niloticus were obtained during the period 1994 to 1997 from the Uganda sector of Lake Victoria. A bottom trawl with a 25.4 mm mesh size in the codend was used for sampling in waters 4 – 50 meters deep. The results are compared with growth parameters published elsewhere and analysed in the context of a framework of length indicators for sustainable exploitation of this species. www.fishbase.se /Training/Abstracts/Kenya/John%20Okaronon.html   (103 words)

Abstracts National Conf 1   (Site not responding. Last check: 2007-10-25) Oreochromis niloticus breeds both in the effluent rivers and in Lake Victoria offshore areas while Lates niloticus breeds in the offshore areas of Lake Victoria. The introduction of Lates niloticus (Linnaeus, 1758), 0. Lates niloticus dominated the catches in terms of ichthyomass in the lake. www.lvemp.org /L_Publications/kenya/AbstractsNATCON01.htm   (11434 words)

Wildlife Animal Resource Management - WARM   (Site not responding. Last check: 2007-10-25) These changes are reflected in the trend of capture fisheries; from multispecies to oligospecific with a dominance of the Nile perch Lates niloticus and Nile tilapia Oreochromis niloticus. Dr Rutaisire has developed a proposal for research on the breeding and culture of the Nile perch (Lates niloticus) with a main objective of generating prerequisite information for commercial culture of the species. The Nile perch Lates niloticus is a large freshwater fish that is native to Lakes Albert and Chad and the Nile, Congo and Niger Rivers. www.makerere-warm.net /project/fish_breeding.html   (550 words)

NAS - Species FactSheet As such, the positive identification of one or more of the Lates species introduced to Texas may eventually also be called into question. Emere, M. Parasitic infection of the Nile perch Lates niloticus (L.) in River Kaduna. The food of the Nile perch, Lates niloticus (L.), after the disappearance of the haplochromine cichlids in the Nyanza Gulf of Lake Victoria (Kenya). nas.er.usgs.gov /queries/FactSheet.asp?speciesID=412   (976 words)

[No title] Fish yield extrapolated and reported as kg.ha-1.yr-1, were subjected to the one-way analysis of variance (ANOVA) test followed by Duncan’s multiple range test to compare the treatment means at 5% probability. ABSTRACT The effect of predation by monosex (male) Hemichromis fasciatus (sex-reversed by feeding 60 mg of 17-a-methytestosterone/kg dry feed to swim-up fry for 30 days) on population control and yield of market-size Nile tilapia, Oreochromis niloticus (>200g) was evaluated in small earthen pond (200 m2) using three tilapia-predator stocking combinations (25:1, 50:1, 100:1). Estimated annual production of market-size O. niloticus at 25:1, 50:1 and 100:1 were 5.85, 5.13 and 4.65 t.ha-1.yr-1, respectively. ag.arizona.edu /azaqua/ista/ista4papers/FAGENBRO.DOC   (1043 words)

LAKE VICTORIA ENVIRONMENTAL MANAGEMENT PROJECT   (Site not responding. Last check: 2007-10-25) Lates niloticus (Linne), and the growth of its fishery in the northern waters of Lake Victoria. Lates niloticus (L.) on the fisheries of Lake Victoria. Balirwa, J.S. The evolution of the fishery of Oreochromis niloticus (Pisces: Cichlidae) in Lake Victoria. www.lvemp.org /L_Publications/tanzania/Bibliography_fishbiology.htm   (5443 words)

Biological Sciences / Research / Genetic affinities of an introduced predator: Nile perch in Lake Victoria, East Africa Although the introduction of Nile perch, Lates niloticus, to Lake Victoria has received intense global attention, especially in relation to its impact on endemic cichlid species and on fishery yields, fundamental information on its taxonomy and population genetics is larking. In addition, genetic drift caused by the relatively small founder population (approximate to 400), the initially slow population increase followed by a period of explosive population growth, and selection pressures in the new environment may have resulted in substantial genetic changes. Allozyme data indicated that the introduced Nile perch of Lake Victoria were mainly L. niloticus from Lake Albert, although maximum likelihood estimates of stock contributions (GSI) suggested the presence of L. macrophthalmus. biology.bangor.ac.uk /research/publication/000075087100006   (273 words)

Identification of Nile Perch (Lates niloticus), Grouper (Epinephelus guaza), and Wreck Fish (Polyprion americanus) ...   (Site not responding. Last check: 2007-10-25) Identification of Nile Perch (Lates niloticus), Grouper (Epinephelus guaza), and Wreck Fish (Polyprion americanus) Fillets by PCR Amplification of the 5S rDNA Gene Nile perch (Lates niloticus), grouper (Epinephelus guaza), and wreck fish (Polyprion americanus) were differentiated by polymerase chain reaction (PCR) amplification of the nuclear 5S rDNA gene. This approach is rapid and reliable and offers the potential to detect fraudulent or unintentional mislabeling of these species in routine seafood authentication analysis. www.aoac.org /pubs/JOURNAL/2001/May_June/Identification_of_Nile.htm   (144 words)

Labeo horie   (Site not responding. Last check: 2007-10-25) LAKE TURKANA:...ferox, Lates niloticus, L. longispina, Hydrocynus forskalii, Bagrus bayad, B. docmac, Synodontis schall, Oreochromis niloticus, Labeo horie, Citharinus citharus... The Research Centres:...(Oreochromis niloticus; O. galilaeus; Tilapia zilli) 24.7%; Labeo horie 22.6%; Lates spp. (Lates niloticus and L. longispinis) 20.5%; Bagrus spp. fish.mongabay.net /L/Labeo_horie.shtml   (445 words)

Nile Perch - Iridis Encyclopedia   (Site not responding. Last check: 2007-10-25) Nile perch (Lates niloticus) can live for up to 16 years and are sexually mature at 3 years of age. Nile perch are silver in colour with a blue tinge. Adult Nile perch feed on fish, larger crustaceans and insects. www.iridis.com /Nile_Perch   (244 words)

JVP Content   (Site not responding. Last check: 2007-10-25) This material differs from the other species of Lates in several features, such as the frontal bones of the fossils being broader anteriorly, the basioccipital facets having a more irregular shape, and the frontoparietal crests extending farther, and diverging, anteriorly. The Oligocene material therefore cannot be assigned to any of the described species of Lates, and is here described as a new species, L. It is most similar to Lates niloticus, L. www.vertpaleo.org /jvp/24-299-308.html   (218 words)

Lates: Definition of Lates in Webster's Dictionary 1913 Edition - Wunder Dictionary Lates: Definition of Lates in Webster's Dictionary 1913 Edition - Wunder Dictionary Lates: Definition of Lates in Webster's Dictionary 1913 Edition A genus of large percoid fishes, of which one species (Lates Niloticus) inhabits the Nile, and another (L. calcarifer) is found in the Ganges and other Indian rivers. websters.wunderdictionary.com /dictionary/def/english/lates.html   (49 words)

sp=lates   (Site not responding. Last check: 2007-10-25) AF018570 Lates niloticus cytochrome b gene, mitochondrial gene encoding mitochondrial protein, partial cds. AF018581 Lates calcarifer cytochrome b gene, mitochondrial gene encoding mitochondrial protein, partial cds. AF018598 Lates niloticus cytochrome b gene, mitochondrial gene encoding mitochondrial protein, partial cds. pbil.univ-lyon1.fr /cgi-bin/acnuc-search-sp?query=LATES&db=GenBank   (192 words)

Protofée, Clemens:Untersuchungen zur Gewinnung von Viktoriabarsch (Lates niloticus)- Filets in Uganda   (Site not responding. Last check: 2007-10-25) Protofée, Clemens:Untersuchungen zur Gewinnung von Viktoriabarsch (Lates niloticus)- Filets in Uganda Untersuchungen zur Gewinnung von Viktoriabarsch (Lates niloticus)- Filets in Uganda In the future the use of chlorine in the fish industries of third countries needs and deserves great and careful consideration. library.vetmed.fu-berlin.de /diss-abstracts/116018.html   (475 words)

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