The mode of operation of the electric receptors in gymnarchus niloticus. It is found in swamps, lakes and rivers in the nile, turkana, chad, niger, volta, senegal, and gambia basins. Gymnarchus niloticus and thwaitia bagri, under the skin lateral to the mouth in bagrus bayad. Pdf chemical composition and food properties of gymnarchus. Carlson, in cell physiology source book fourth edition, 2012. Unlike other knifefish it has an extended dorsal rather than anal fin giving rise to the alternative common name of. Gymnarchus niloticus proper noun edit a taxonomic species within the family gymnarchidae the aba, frankfish, freshwater rattail, or african knifefish, found in swamps, lakes and rivers. Some aspects of the reproductive biology of gymnarchus niloticus cuvier, 1829 knifefish in lekki lagoon, nigeria.
Enter one or more queries in the top text box and one or more subject sequences in the lower text box. Then use the blast button at the bottom of the page to align your sequences. In all these characteristics, the tooth is similar to the single living species of the family, gymnarchus niloticus, and is thus attributed to this taxa. Aba aba knife 1214 gymnarchus niloticus product view. Pdf some aspects of the reproductive biology of gymnarchus. Electrostatic tuning of a potassium channel in electric. In contrast, gymnarchus niloticus gymnarchidae prepares a large floating nest. A high quality assembly of the nile tilapia oreochromis. Redbelly tilapia is a species of fish that has been introduced globally, mainly for aquaculture purposes or as a food fish.
Anisakidae infection and bioaccumulation of polycyclic aromatic hydrocarbons in gymnarchus niloticus cuvier, 1829. Osteoglossiformes is one of the most ancient early triassic groups of freshwater teleosts and has at least one representative on. Gymnarchus niloticus swims by undulations of a longbased dorsal fin, while its body axis is in many. Culture trials of gymnarchus niloticus in earthen and concrete pond was carried out. Like many other fish, tilapias are sexually dimorphic and sex is a commercially. Kareem kazeem, university of ibadan, nigeria description.
Growth pattern and nutrient profile of african knifefish gymnarchus niloticus cuvier, 1829 diets in tropical lake. First chromosomal analysis in gymnarchus niloticus. However, it is not a legal authority for statutory or regulatory purposes. Gymnarchus niloticus occurs in the niger and nile basins. First chromosomal analysis in gymnarchus niloticus gymnarchidae. Aba, aba aba knifefish, african knifefish and frankfish. Pdf gymnarchus niloticus cuvier, 1830, a treathened fish. Among the extraordinary striking features that distinguish it from other tropical freshwater. Culture trials of gymnarchus niloticus in earthen and. This species is native to many parts of africa, and has also been introduced. Anatomically, the tuberous organs of gymnarchus are referred to as gymnarchomasts. Gymnarchus niloticus, that generates a constant sine wavelike eod. These fish have evolved a potassium channel that shortens action potentials. A total of 38 fishes comprising of 20 gymnarchus niloticus and 18 heterotis niloticus.
Vo van puublicidad rated it it was amazing feb 16, jun 20, fadhli is currently reading it. All structured data from the file and property namespaces. All material on this site has been provided by the respective publishers and authors. This work is licensed under a creative commons attributionnoncommercial 3. Itis taxonomy is based on the latest scientific consensus available, and is provided as a general reference source for interested parties. Gymnarchus niloticus commonly known as the aba, aba aba, frankfish, freshwater rattail, poissoncheval, or african knifefish is an electric fish, and the only species in the genus. Some aspects of the reproductive biology of gymnarchus.
Gastrointestinal helminth parasites of the fish mafiadoc. Tilapias are the second most farmed fishes in the world and a sustainable source of food. The nile tilapia oreochromis niloticus is a species of tilapia, a cichlid fish native to the northern half of africa and israel. Media in category gymnarchus niloticusthe following 11 files are in this category, out of 11 total. Hoffman 1999 recorded infections by camallanids paracamallanus cyathopharynx and. Seasonal variation in the length weight relationships and condition factor of gymnarchus niloticus cuvier, 1829 in lekki lagoon, lagos state, nigeria. Environmental induction of natural spawning in gymnarchus niloticus cuvier 1829 in an earthen pond environmental induction of natural spawning in gymnarchus niloticus cuvier 1829 in an. This page was last edited on 3 february 2012, at 11. All of the mormyrids have pulsetype eods, while gymnarchus has a wavetype eod see fig. A comparative study of the gut helminthes of gymnarchus niloticus and heterotis niloticus were undertaken. All structured data from the file and property namespaces is available under the creative commons cc0 license.
The mechanism of object location in gymnarchus niloticus and. Files are available under licenses specified on their description page. Studies on the biology of gymnarchus niloticus in lake. Aba aba gymnarchus niloticus the free freshwater and. This bird kills and eats monkeys eng subs duration. Pdf representation of accurate temporal information in. Gymnarchus niloticus cuvier, 1829 unknown category for more multimedia, look at gymnarchus niloticus on wikimedia commons. Morphological measurement and analysis of gymnarchus niloticus. Gymnarchus niloticus cuvier, 1829 common names aba in english aba in english aba in english aba in language. Gymnarchus niloticus commonly known as the aba, aba aba, frankfish, freshwater rattail, poissoncheval, or african knifefish is an electric fish, and the only species in the genus gymnarchus and the family gymnarchidae within the order osteoglossiformes. It has been shown lissmann, 1958 that gymnarchus nuoticus gives a. Pdf a comparative study of the parasitic helminth fauna. Other articles where gymnarchus niloticus is discussed.
The mormyriformes consist of two distinct sister families, the mormyridae and the monotypic gymnarchidae, gymnarchus niloticus. While every effort has been made to provide the most reliable and uptodate information available, ultimate legal requirements with respect to species are contained in. The knifefish is found only along the edges of the nile, niger. Additional names aba aba, aba, african knifefish, frankfish origin edit edit source found in africa occurring widely in the nile, niger, volta, chad, senegal and gambia basins and lake. Gymnarchus niloticus an overview sciencedirect topics. Gymnarchus niloticus is the only species of the family gyrnnarchidae. The type b cutaneous receptor represents one of the three kinds of specific organs of the lateral line system of gymnarchus niloticus szabo and barets, 1963. Pdf dry samples of gymnarchus niloticus trunk fish were analysed for proximate, mineral and amino acid. Following flooding of the river banks gambia river, this species builds large elliptical floating nests in densely vegetated swamps at depths of about 11. Some aspects of the reproductive biology of gymnarchus niloticus cuvier, 1829 knifefish in lekki lagoon, nigeria opadokun i. The rich fish fauna of the lagoon includes heterotis. Numerous introduced populations exist outside its natural range. Representation of accurate temporal information in the electrosensory system of the african electric fish, gymnarchus niloticus.
238 725 1188 399 710 255 532 1094 1084 156 892 975 1137 1008 966 1584 1020 377 97 100 378 1578 264 410 706 770 164 346 733 601 982 1104 943 1300 989 617 291 723 1008 1440 2 130 1335 139