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Siluranodon auritus (Geoffroy Saint-Hilaire 1809)

Trophic Strategy ( Anglèis )

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In the Sudd, it occurs beneath fringing Eichornia. Stomachs of fish examined contained zooplankton, chironomids and debris (Ref. 28714).
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Morphology ( Anglèis )

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Dorsal spines (total): 0; Dorsal soft rays (total): 5; Anal spines: 0; Analsoft rays: 67 - 87
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Migration ( Anglèis )

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Potamodromous. Migrating within streams, migratory in rivers, e.g. Saliminus, Moxostoma, Labeo. Migrations should be cyclical and predictable and cover more than 100 km.
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Life Cycle ( Anglèis )

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Distinct pairing (Ref. 205).
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Diagnostic Description ( Anglèis )

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Diagnosis: 67-87 anal-fin rays; 49-60 thin and flexible gill rakers on lower limb of first gill arch; 4 pairs of well developed barbels; small, spineless dorsal fin with 4-5 branched rays; jaws and palatine bones entirely without teeth (Ref. 43912, 57127).Description: 9-10 branched pectoral fin rays; 44-47 non-fused vertebrae; 10-13 branchiostegal rays on one side of head; posterior nostrils always closer to each other than anterior ones; caudal peduncle considerably deeper than long; inner side of pectoral spine without serrations; caudal and anal fin sometimes continuous; barbels well developed; nasal barbel at least reaching to anterior border of opercle and at maximum to just beyond opercle; maxillary barbel reaches at least to just beyond opercle and at maximum to midway along pectoral spine; inner and outer mental barbels very well developed, about equal in length, or inner pair very slightly longer, at least reaching to base and at maximum to end of pectoral spine; head rounded; caudal moderately forked; pectoral fins broad and rounded, pelvic fins small and pointed; gill rakers covered with filtrating epithelium of micro-rakers (Ref. 43912).Coloration: in live fish as well as in preserved specimens, coloration resembles that of juveniles of Schilbe intermedius: head and back brown; dark band along lateral line, another above anal fin, and a third on anal-fin margin; other fins slightly mottled with brown (Ref. 43912, 57127). Large brown blotch behind head, where swim-bladder lies close below skin; presence of a red spot, shot with gold, on gill cover may be related to maturity state (Ref. 43912).
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Biology ( Anglèis )

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Pelagic, occurs large and moderate lakes and rivers (Ref. 43912). In the Sudd, they occur beneath fringing Eichornia (Ref. 28714). Microphagous, feeding mainly on algae and occasionally rotifers, planktonic and benthic crustaceans, immature insects (Ref. 43912) and mud/debris (Ref. 28714, 43912). Probably reproduces during the floods, migrating from lakes to rivers; howver in Lake Kainji fish were reported to migrate from the river to the Lake to spawn (Ref. 43912). Oviparous, eggs are unguarded (Ref. 205). Max. reported total length 175 mm (Ref. 3570, 43912). Might locally represent an important species for fisheries since it is sometimes extremely abundant, but this may be negated by its small size (Ref. 43912).
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Importance ( Anglèis )

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fisheries:
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Siluranodon auritus ( Catalan; Valensian )

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Siluranodon auritus és una espècie de peix de la família dels esquílbids i de l'ordre dels siluriformes.

Morfologia

Reproducció

És ovípar i els ous no són protegits pels pares.[6]

Alimentació

Menja zooplàncton i quironòmids.[7]

Hàbitat

És un peix d'aigua dolça i de clima tropical.[4]

Distribució geogràfica

Es troba a Àfrica: rius Nil, Níger i Volta, i llac Txad.[4][8][9][10][11][12][13][14][15][16]

Referències

  1. Bleeker P., 1858. De visschen van den Indischen Archipel. Beschreven en toegelicht. Siluri. Acta Soc. Sci. Indo-Neerl. v. 4. i-xii + 1-370.
  2. BioLib (anglès)
  3. Geoffroy Saint-Hilaire, E., 1809. Poissons du Nil, de la mer Rouge et de la Méditerranée. A: Description de l'Egypte, ... Histoire Naturelle. Paris, 1809-1830. Poissons du Nil v. 1 (pt 1): 1-52 [141-338], Poissons Pls. 1-17.
  4. 4,0 4,1 4,2 FishBase (anglès)
  5. De Vos, L., 1986. Schilbeidae. p. 36-53. A: J. Daget, J.-P. Gosse i D.F.E. Thys van den Audenaerde (eds.) Check-list of the freshwater fishes of Africa (CLOFFA). ISNB, Brussel·les; MRAC, Tervuren; i ORSTOM, París. Vol. 2.
  6. Breder, C.M. i D.E. Rosen, 1966. Modes of reproduction in fishes. T.F.H. Publications, Neptune City (Estats Units). 941 p.
  7. Bailey, R.G., 1994. Guide to the fishes of the River Nile in the Republic of the Sudan. J. Nat. Hist. 28:937-970.
  8. Blache, J., 1964. Les poissons du bassin du Tchad et du bassin adjacent du Mayo Kebbi. Étude systématique et biologique. Mém. O.R.S.T.O.M. 4(2):483 p.
  9. Boulenger, G.A., 1907. Zoology of Egypt: the fishes of the Nile. Hugh Rees, Limited, Londres. 578p.
  10. Dankwa, H.R., 2003. Traditional knowledge of freshwater fishes in some fishing communities in Ghana. p. 223-229. A: M.L.D. Palomares, B. Samb, T. Diouf, J.M. Vakily i D. Pauly (eds.) Fish biodiversity: local studies as basis for global inferences. ACP-EU Fish. Res. Rep. 14:281 p.
  11. Dankwa, H.R., E.K. Abban i G.G. Teugels, 1999. Freshwater fishes of Ghana: identification, distribution, ecological and economic importance Ann. Mus. R. Afr. Centr., Sci. Zool. 283:53 p.
  12. Getahun, A., 2007. An overview of the diversity and conservation status of the Ethiopian freshwater fauna. J. Afrotrop. Zool. Special Issue:87-96.
  13. Olaosebikan, B.D. i A. Raji, 1998. Field guide to Nigerian freshwater fishes. Federal College of Freshwater Fisheries Technology, New Bussa, Nigèria. 106 p.
  14. Paugy, D., K. Traoré i P.S. Diouf, 1994. Faune ichtyologique des eaux douces d'Afrique de l'Ouest. p. 35-66. A G.G. Teugels, J.F. Guégan i J.J. Albaret (eds.) Biological diversity of African fresh- and brackish water fishes. Geographical overviews presented at the PARADI Symposium, Senegal, 15-20 de novembre de 1993. Ann. Mus. R. Afr. Centr., Sci. Zool., 275:177 p.
  15. Teugels, G.G., C. Lévêque, D. Paugy i K. Traoré, 1988. État des connaissances sur la faune ichtyologique des bassins côtiers de Côte d'Ivoire et de l'ouest du Ghana. Rev. Hydrobiol. Trop. 21(3):221-237.
  16. Vivien, J., 1991. Faune du Cameroun. Guide des mammifères et des poissons. GICAM. 271 p.


Bibliografia

  • Abban, E.K., 1988. Taxonomy and biochemical genetics of some African freshwater fish species. Universitat de Gal·les, Gran Bretanya, 272 p. Ph.D.
  • Anònim, 2001. Base de dades de la col·lecció de peixos del National Museum of Natural History (Smithsonian Institution). Smithsonian Institution - Division of Fishes.
  • Anònim, 2002. Base de dades de la col·lecció de peixos del Museu Americà d'Història Natural. Museu Americà d'Història Natural, Central Park West, NY 10024-5192 (Estats Units).
  • Burgess, W.E. 1989. An atlas of freshwater and marine catfishes. A preliminary survey of the Siluriformes. T.F.H. Publications, Inc., Neptune City (Estats Units). 784 p.
  • Eschmeyer, William N.: Genera of Recent Fishes. California Academy of Sciences. San Francisco, Califòrnia, Estats Units. iii + 697. ISBN 0-940228-23-8 (1990).
  • Eschmeyer, William N., ed. 1998. Catalog of Fishes. Special Publication of the Center for Biodiversity Research and Information, núm. 1, vol. 1-3. California Academy of Sciences. San Francisco, Califòrnia, Estats Units. 2905. ISBN 0-940228-47-5.
  • Ferraris, Carl J.: Checklist of catfishes, recent and fossil (Osteichthyes: Siluriformes), and catalogue of siluriform primary types. Zootaxa, 1418. 8 de març del 2007. ISBN 978-1-86977-058-7. PDF (anglès)
  • Helfman, G., B. Collette i D. Facey: The diversity of fishes. Blackwell Science, Malden, Massachusetts (Estats Units), 1997.
  • Magomna, O., 2003. Noms communs de poissons tchadien en langue Kim. p. 234-242. A: M.L.D. Palomares, B. Samb, T. Diouf, J.M. Vakily i D. Pauly (eds.) Fish biodiversity: local studies as basis for global inferences. ACP-EU Fish. Res. Rep. 14, 281p.
  • Moyle, P. i J. Cech.: Fishes: An Introduction to Ichthyology, 4a edició, Upper Saddle River, Nova Jersey, Estats Units: Prentice-Hall. Any 2000.
  • Nelson, J.S. 2006: Fishes of the world. Quarta edició. John Wiley & Sons, Inc. Hoboken, Nova Jersey, Estats Units. 601 p.
  • Riede, K., 2004. Global register of migratory species - from global to regional scales. Final Report of the R&D-Projekt 808 05 081. Federal Agency for Nature Conservation, Bonn, Alemanya. 329 p.
  • Wheeler, A.: The World Encyclopedia of Fishes, 2a edició, Londres: Macdonald. Any 1985.


Enllaços externs

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Siluranodon auritus: Brief Summary ( Catalan; Valensian )

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Siluranodon auritus és una espècie de peix de la família dels esquílbids i de l'ordre dels siluriformes.

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Siluranodon ( Anglèis )

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Siluranodon auritus is the only species in the genus Siluranodon of the catfish (order Siluriformes) family Schilbeidae.[1]

This species is known from the Nile River and the Chad, Niger, Volta, and Comoe basins.[1] In the Sudd, these fish have been found to occur beneath fringing Eichhornia.[2]

Although it has been previously thought that fish of this species lack teeth, it has been found that they have very reduced teeth. As the fish grows, teeth on the upper jaw are lost due to damage, while teeth on the lower jaw are overgrown by the surrounding bone.[3] It has been suggested that this species exhibits pedomorphosis, that is, they retain many juvenile traits into adulthood. Some of these include an absence of a dorsal fin spine and a reduced number of ribs.[3] S. auritus reaches a length of about 17.5 centimetres (6.9 in) TL.[2]

As adults, S. auritus are filter-feeders, feeding primarily on phytoplankton and zooplankton.[3] Stomachs of fish have been examined to contain zooplankton, chironomids and debris.[2]

These fish are oviparous and the eggs are unguarded.[2]

References

  1. ^ a b Ferraris, Carl J. Jr.; Miya, M; Azuma, Y; Nishida, M (2007). "Checklist of catfishes, recent and fossil (Osteichthyes: Siluriformes), and catalogue of siluriform primary types" (PDF). Zootaxa. 1418 (1): 1–628.
  2. ^ a b c d Froese, Rainer; Pauly, Daniel (eds.) (2011). "Siluranodon auritus" in FishBase. February 2011 version.
  3. ^ a b c Golubtsov, A. S.; Moots, K. A.; Dzerjinskii, K. F. (2004). "Dentition in the African catfishes Andersonia (Amphiliidae) and Siluranodon (Schilbeidae) previously considered toothless". Journal of Fish Biology. 64 (1): 146–158. doi:10.1111/j.1095-8649.2004.00291.x.
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Siluranodon: Brief Summary ( Anglèis )

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Siluranodon auritus is the only species in the genus Siluranodon of the catfish (order Siluriformes) family Schilbeidae.

This species is known from the Nile River and the Chad, Niger, Volta, and Comoe basins. In the Sudd, these fish have been found to occur beneath fringing Eichhornia.

Although it has been previously thought that fish of this species lack teeth, it has been found that they have very reduced teeth. As the fish grows, teeth on the upper jaw are lost due to damage, while teeth on the lower jaw are overgrown by the surrounding bone. It has been suggested that this species exhibits pedomorphosis, that is, they retain many juvenile traits into adulthood. Some of these include an absence of a dorsal fin spine and a reduced number of ribs. S. auritus reaches a length of about 17.5 centimetres (6.9 in) TL.

As adults, S. auritus are filter-feeders, feeding primarily on phytoplankton and zooplankton. Stomachs of fish have been examined to contain zooplankton, chironomids and debris.

These fish are oviparous and the eggs are unguarded.

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Siluranodon auritus ( Spagneul; Castilian )

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Siluranodon auritus es una especie de peces de la familia Schilbeidae en el orden de los Siluriformes.

Morfología

• Los machos pueden llegar alcanzar los 17,5 cm de longitud total.[1][2]

Reproducción

Es ovíparo y los huevos no son protegidos por los padres.

Alimentación

Come zooplancton y quironómidos.

Hábitat

Es un pez de agua dulce y de clima tropical.

Distribución geográfica

Se encuentran en África: ríos Nilo, Níger y Vuelta, y lago Chad.

Referencias

  1. FishBase (en inglés)
  2. De Vos, L., 1986. Schilbeidae. p. 36-53. A: J. Daget, J.-P. Gosse y D.F.E. Thys van den Audenaerde (eds.) Check-list of the freshwater fishes of Africa (CLOFFA). ISNB, Bruselas; MRAC, Tervuren; i ORSTOM, París. Vol. 2.

Bibliografía

 title=
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Siluranodon auritus: Brief Summary ( Spagneul; Castilian )

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Siluranodon auritus es una especie de peces de la familia Schilbeidae en el orden de los Siluriformes.

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Siluranodon auritus ( Basch )

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Siluranodon auritus Siluranodon generoko animalia da. Arrainen barruko Schilbeidae familian sailkatzen da.

Banaketa

Erreferentziak

  1. Froese, Rainer & Pauly, Daniel ed. (2006), Siluranodon auritus FishBase webgunean. 2006ko apirilaren bertsioa.

Ikus, gainera

(RLQ=window.RLQ||[]).push(function(){mw.log.warn("Gadget "ErrefAurrebista" was not loaded. Please migrate it to use ResourceLoader. See u003Chttps://eu.wikipedia.org/wiki/Berezi:Gadgetaku003E.");});
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Siluranodon auritus: Brief Summary ( Basch )

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Siluranodon auritus Siluranodon generoko animalia da. Arrainen barruko Schilbeidae familian sailkatzen da.

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Siluranodon auritus ( olandèis; flamand )

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Vissen

Siluranodon auritus is een straalvinnige vissensoort uit de familie van de glasmeervallen (Schilbeidae).[1] De wetenschappelijke naam van de soort is voor het eerst geldig gepubliceerd in 1809 door Geoffroy Saint-Hilaire.

Bronnen, noten en/of referenties
  1. (en) Siluranodon auritus. FishBase. Ed. Ranier Froese and Daniel Pauly. 02 2013 version. N.p.: FishBase, 2013.
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Siluranodon auritus ( ucrain )

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Опис

Загальна довжина сягає 17,5 см. На думку дослідників, у цього виду проявляється педоморфоза, тобто дорослі особини зберігають багато рис нестатевозрілих. Голова подовжена, широка. Очі помірно великі. Щелепи значні. Зуби вкрай дрібні, особливо на верхній щелепі (або практично відсутні). Зуби на піднебінній кістці відсутні. Є 3 пари коротеньких вусів, з яких одна з пар на нижній щелепі є найдовшою. На кінцівці першої зябрової дуги є 50—60 тонких та гнучких зябрових тичинок. Тулуб кремезний, широкий, стиснутий з боків. Спинний (5 м'яких променів) та грудні плавці помірно широкі, високі, з короткою основою та 1 жорстким променем. Черевні плавці поступаються останнім. Жировий плавець відсутній. Анальний плавець довгий, тягнеться від основи хвостового плавця до майже черевних плавців — 67—87 м'яких променів. Хвостовий плавець з великою виїмкою.

Загальний фон сріблястий. Голова і спина коричневого кольору. Також проходить темна смуга уздовж бічної лінії, інші — вище анального плавця та на краю останнього. Спинний, грудні, черевні плавці дещо строкаті.

Спосіб життя

Це демерсальна риба. Зустрічається в прісній воді в місцях, де росте ейхорнія. Утворює невеличкі косяки. Цей сом активний у присмерку. Живиться зоопланктоном.

Розповсюдження

Мешкає в басейнах річок Нігер, Вольта, Ніл та озері Чад.

Джерела

  • * De Vos, L., 1986. Schilbeidae. p. 36-53. In J. Daget, J.-P. Gosse and D.F.E. Thys van den Audenaerde (eds.) Check-list of the freshwater fishes of Africa (CLOFFA). ISNB, Brussels; MRAC, Tervuren; and ORSTOM, Paris. Vol. 2.
  • Golubtsov, A. S.; Moots, K. A.; Dzerjinskii, K. F. (2004). Dentition in the African catfishes Andersonia (Amphiliidae) and Siluranodon (Schilbeidae) previously considered toothless. Journal of Fish Biology. 64 (1): 146—158
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金黃大齒錫伯鯰 ( cinèis )

fornì da wikipedia 中文维基百科
二名法 Siluranodon auritus
Geoffroy Saint-Hilaire, 1809

金黃大齒錫伯鯰,為輻鰭魚綱鯰形目北非鯰科的其中一,分布於非洲尼日河尼羅河查德湖十字河等流域,體長可達17.5公分,棲息在底層水域,屬肉食性,生活習性不明。

參考文獻

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金黃大齒錫伯鯰: Brief Summary ( cinèis )

fornì da wikipedia 中文维基百科

金黃大齒錫伯鯰,為輻鰭魚綱鯰形目北非鯰科的其中一,分布於非洲尼日河尼羅河查德湖十字河等流域,體長可達17.5公分,棲息在底層水域,屬肉食性,生活習性不明。

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