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Morphology

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Dorsal spines (total): 15 - 16; Dorsal soft rays (total): 11 - 12; Analspines: 3; Analsoft rays: 9 - 10
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Recorder
Tobias Musschoot
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Life Cycle

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Assumed to be the same as in K. eisentrauti.
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Rainer Froese
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Diagnostic Description

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Diagnosis: snout pointed; mouth at an angle of about 20-30° with the horizontal (Ref. 53940, 81260). Teeth usually only in 2 series (Ref. 53940). Lower pharyngeal bone very slender with a relatively long blade (Ref. 53940), markedly longer than wide (Ref. 81260). Lower jaw with a slight mental process; can always be recognised when freshly caught by the blood that swells the capillaries, especially at the bases of the fins, and oozes over the surface, staining its silvery color; no dark markings on body of freshly caught specimens; 2-5 dark blotches appear between upper lateral line and dorsal fin, and sometimes also a vague dark stripe at the level of the horizontal myoseptum, in preserved specimens (Ref. 53940).Description: relatively robust (body depth 36.5-40.0% SL); interorbital width 23.5-28.3% HL (Ref. 81260). Frontal profile straight (Ref. 51307, 81260). Snout pointed (Ref. 52307, 53940). Mouth at an angle of about 20-30° with the horizontal (Ref. 53940, 81260). Teeth usually only in 2 series (Ref. 53940, 81260), outer row of upper jaw with 45-66 fine, obliquely spatulate bicuspid teeth, inner rows tricuspid (Ref. 81260). Scales on cheek in 2 series, usually expanding to 3 on the anterior part (Ref. 53940). Lower pharyngeal bone very slender with a relatively long blade (Ref. 53940, 81260). Lower jaw with a slight mental process; microbranchiospines present on outer sides of second, third and fourth arches (Ref. 53940). Gill rakers small (Ref. 81260).Coloration: dorsal lappets black-tipped; no tilapia mark (Ref. 53940). Freshly caught: body silvery; fins tinged watery yellow; snout dark (Ref. 53940, 81260). Preserved: 2-5 dark blotches appear between upper lateral line and dorsal fin, and sometimes also a vague dark stripe at the level of the horizontal myoseptum (Ref. 53940, 81260). Faint traces of 8-10 vertical bars on upper half of body in specimens of 6-7cm SL (Ref. 53940). Body brownish; cheeks and opercles sometimes appear bronze; thin, black horizontal band occasionally visible on caudal peduncle (Ref. 52307).
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Trophic Strategy

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Mainly feeds on mosquito larvae; possesses elevated levels of hemoglobin in its blood as an adaptation to reduced oxygen levels at great water depth (Ref. 52307).
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Grace Tolentino Pablico
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Biology

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Mainly feeds on mosquito larvae; possesses elevated levels of hemoglobin in its blood as an adaptation to reduced oxygen levels at great water depth; possibly an ovophilicmouth brooder that does not pair-bond (Ref. 52307).
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Tess Cruz
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Importance

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fisheries:
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Konia dikume ( Catalan; Valencian )

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Mergefrom.svg S'ha proposat que «Konia» sigui fusionat a aquest article. (Vegeu la discussió, pendent de concretar). Data: juny de 2017

Konia dikume és una espècie de peix de la família dels cíclids i de l'ordre dels perciformes.

Morfologia

  • Els mascles poden assolir 11,2 cm de longitud total.[4]

Alimentació

Menja, principalment, larves de mosquit.[4]

Hàbitat

És una espècie de clima tropical.[4]

Distribució geogràfica

Es troba a Àfrica: és una espècie de peix endèmica del llac Barombi-ma-Mbu (oest del Camerun).[4][5][6][7]

Observacions

Té un nivell elevat d'hemoglobina a la sang com a conseqüència de la seua adaptació al pobre contingut d'oxigen de l'aigua a grans fondàries.[8]

Referències

  1. Trewavas, E., J. Green & S. A. Corbet, 1972. Ecological studies on crater lakes in West Cameroon. Fishes of Barombi Mbo. J. Zool. (Lond.) v. 167 (pt 1): 41-95, Pl. 1.
  2. BioLib (anglès)
  3. Trewavas, E., Green, J. & Corbet, S. A., 1972. Ecological studies on crater lakes in West Cameroon. Fishes of Barombi Mbo. Journal of Zoology (Londres) v. 167 (pt 1): 41-95, Pl. 1.
  4. 4,0 4,1 4,2 4,3 FishBase (anglès)
  5. Daget, J., 1984. Contribution à la faune du Cameroun. Poissons des fleuves côtiers. Bull. Mus. Natn. Hist. Nat., 4e sér., 6(1):177-202.
  6. Trewavas, E., 1962. Fishes of the Crater Lakes of the Northwestern Cameroons. Bonner Zool. Beitr. 13:146-192.
  7. Vivien, J., 1991. Faune du Cameroun. Guide des mammifères et des poissons. GICAM. 271 p.
  8. Lamboj, A., 2004. The Cichlid Fishes of Western Africa. Birgit Schmettkamp Verlag, Bornheim, Alemanya. 255p.


Bibliografia

  • Anònim, 2002. Fish collection database of the American Museum of Natural History. American Museum of Natural History, Central Park West, NY 10024-5192, Estats Units.
  • Axelrod, H. R., 1993. The most complete colored lexicon of cichlids. T.F.H. Publications, Neptune City, New Jersey, Estats Units.
  • Axelrod, Herbert Richard (1996): Exotic Tropical Fishes. T.F.H. Publications. ISBN 0-87666-543-1.
  • Baensch, H.A. i R. Riehl, 1997: Aquarien Atlas, Band 5. Mergus Verlag, Melle, Alemanya. 1148 p.
  • Beadle, L.C., 1981. The inland waters of tropical Africa. An introduction to tropical limnology. Segona edició. Longman Group Limited, Londres. 475 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.
  • Goldstein, R.J.: Cichlids of the world.T.F.H. Publications Inc. Neptune City, Nova Jersey, Estats Units. Any 1988.
  • Helfman, G., B. Collette i D. Facey: The diversity of fishes. Blackwell Science, Malden, Massachusetts (Estats Units), 1997.
  • 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.: Fishes of the World, 3a edició. Nova York, Estats Units: John Wiley and Sons. Any 1994.
  • Riehl, R. i H.A. Baensch, 1996. Aquarien Atlas, Band 1. 10a. edició. Mergus Verlag GmBH, Melle, Alemanya. 992 p.
  • Robins, C.R., R.M. Bailey, C.E. Bond, J.R. Brooker, E.A. Lachner, R.N. Lea i W.B. Scott, 1991. World fishes important to North Americans. Exclusive of species from the continental waters of the United States and Canada. Am. Fish. Soc. Spec. Publ. (21):243 p.
  • Römer U.: Cichliden Atlas, Bd. 1. Melle. 1311 p. Any 1998.
  • Scliewen, U.K., D. Tautz i S. Pääbo, 1994. Sympatric speciation suggested by monophyly of crater lake cichlids. Nature 368:629-632.
  • Teugels, G.G., 1991. Konia. p. 206. A: J. Daget, J.-P. Gosse, G.G. Teugels 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. 4.
  • Ufermann, A., R. Allgayer i M. Geerts (eds.), 1987. Cichlid catalogue (Pisces, Perciformes, Cichlidae, Bonaparte, 1840). Vol. 1. Alphabetical catalogue of the cichlid fishes. Mr. Robert Allgayer, 15 rue des Hirondelles, 67350 Dauendorf, França. 1987:i-xv, 439 p.
  • Wheeler, A.: The World Encyclopedia of Fishes, 2a edició, Londres: Macdonald. Any 1985.


Enllaços externs

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Konia dikume: Brief Summary ( Catalan; Valencian )

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Konia dikume és una espècie de peix de la família dels cíclids i de l'ordre dels perciformes.

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Dikume

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The dikume (Konia dikume) is a critically endangered species of fish in the family Cichlidae. It is endemic to Lake Barombi Mbo in western Cameroon.

Description

The dikume is a silvery coloured fish with faint vertical barring. It grow to a maximum length of 11.2 cm. The most distinguishing feature of this species is that when freshly caught the capillaries swell with blood, particularly at the base of the fins, and oozes out to stain the fishes otherwise silvery skin.[2]

Distribution and habitat

It is endemic to Lake Barombi Mbo, a volcanic crater lake with a diameter of just 3 miles in western Cameroon[3] where only the top 40 metres contains enough dissolved oxygen to sustain vertebrate life.[4]

Habits

The dikume is an invertebrate feeder which specialises in feeding on the larvae of the mosquito Chaoborus spp. To reach this food source the dikumbe must spend time in water that is so deep that it is deoxygenated, the high levels of hemoglobin in its blood are an adaptation that allow it to store oxygen so that it can visit the deeper, deoxygenated parts of the lake.[5] Like the other cichlids endemic to Lake Barombi Mbo the dikume is a mouthbrooder.[4]

Threats

It is threatened because of pollution and sedimentation due to human activities. It is potentially also threatened by large emissions of carbon dioxide (CO2) from the lake's bottom (compare Lake Nyos),[1] although studies indicate that Barombo Mbo lacks excess amounts of this gas.[6] As well as water abstraction to supply the growing town of Kumba and the introduction of non-native species.[3] However, at the moment, there are no introduced fish species on Lake Barombi Mbo and commercial fishing is banned.[1]

Taxonomy

Lake Barombi Mbo is home to a "species flock" of cichlids with fourteen species, of which twelve are endemic. They all appear to be descended from a common tilapia-like ancestor and the dikume is one of the more specialised of them.[5]

References

  1. ^ a b c Moelants, T. (2010). "Konia dikume". IUCN Red List of Threatened Species. 2010: e.T11054A3248087. doi:10.2305/IUCN.UK.2010-3.RLTS.T11054A3248087.en. Retrieved 16 November 2021.
  2. ^ a b "Konia dikume Trewavas, 1972". fishbase.org. Retrieved 2016-11-23.
  3. ^ a b "Stomatepia pindu". Seriously Fish. Retrieved 2016-11-23.
  4. ^ a b "Insight on Barombi Mbo, Cameroon". Cichlid-forum.com. Retrieved 2016-11-23.
  5. ^ a b Michele L. Thieme; Robin Abell; Neil Burgess; Bernhard Lehner; Eric Dinerstein; David Olson (2005). Freshwater Ecoregions of Africa and Madagascar: A Conservation Assessment Ecoregions Assessments. Island Press. p. 58. ISBN 978-1597267915.
  6. ^ Freeth, S.J.; C.O. Ofoegbu; and K.M. Onuoha (1992). Natural Hazards in West and Central Africa, pp. 50—51. ISBN 978-3-663-05239-5
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Dikume: Brief Summary

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The dikume (Konia dikume) is a critically endangered species of fish in the family Cichlidae. It is endemic to Lake Barombi Mbo in western Cameroon.

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Konia dikume ( Spanish; Castilian )

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Konia dikume es una especie de peces de la familia Cichlidae en el orden de los Perciformes.

Morfología

Los machos pueden llegar alcanzar los 11,2 cm de longitud total.[2]

Alimentación

Come, principalmente, larvas de mosquito.

Hábitat

Vive en zonas de clima tropical.

Distribución geográfica

Se encuentran en África: es una especie endémica del lago Barombi-ma-Mbu (oeste del Camerún ).

Observaciones

Tiene un nivel elevado de hemoglobina en la sangre como consecuencia de su adaptación al pobre contenido de oxígeno del agua en grandes profundidades.

Referencias

  1. World Conservation Monitoring Centre (1996). «Konia dikume ». Lista Roja de especies amenazadas de la UICN 2010.2 (en inglés). ISSN 2307-8235. Consultado el 25 de agosto de 2010.
  2. FishBase (en inglés)

Bibliografía

  • 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, California, Estados Unidos. 2905. ISBN 0-940228-47-5.
  • Fenner, Robert M.: The Conscientious Marine Aquarist. Neptune City, Nueva Jersey, Estados Unidos : T.F.H. Publications, 2001.
  • Helfman, G., B. Collette y D. Facey: The diversity of fishes. Blackwell Science, Malden, Massachusetts, Estados Unidos , 1997.
  • Hoese, D.F. 1986: . A M.M. Smith y P.C. Heemstra (eds.) Smiths' sea fishes. Springer-Verlag, Berlín, Alemania.
  • Maugé, L.A. 1986. A J. Daget, J.-P. Gosse y D.F.E. Thys van den Audenaerde (eds.) Check-list of the freshwater fishes of África (CLOFFA). ISNB, Bruselas; MRAC, Tervuren, Flandes; y ORSTOM, París, Francia. Vol. 2.
  • Moyle, P. y J. Cech.: Fishes: An Introduction to Ichthyology, 4a. edición, Upper Saddle River, Nueva Jersey, Estados Unidos: Prentice-Hall. Año 2000.
  • Nelson, J.: Fishes of the World, 3a. edición. Nueva York, Estados Unidos: John Wiley and Sons. Año 1994.
  • Wheeler, A.: The World Encyclopedia of Fishes, 2a. edición, Londres: Macdonald. Año 1985.

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Konia dikume: Brief Summary ( Spanish; Castilian )

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Konia dikume es una especie de peces de la familia Cichlidae en el orden de los Perciformes.

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Konia dikume ( Basque )

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Konia dikume Konia generoko animalia da. Arrainen barruko Actinopterygii klasean sailkatzen da, Cichlidae familian.

Banaketa

Erreferentziak

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Ikus, gainera

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Konia dikume: Brief Summary ( Basque )

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Konia dikume Konia generoko animalia da. Arrainen barruko Actinopterygii klasean sailkatzen da, Cichlidae familian.

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Konia dikume ( French )

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Konia dikume est une espèce de poisson appartenant à la famille des Cichlidae endémique du Cameroun, présente dans le lac Barombi Mbo. Elle est en danger critique d'extinction selon l'UICN.

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Konia dikume ( Dutch; Flemish )

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Vissen

Konia dikume is een straalvinnige vissensoort uit de familie van de cichliden (Cichlidae).[1] De wetenschappelijke naam van de soort is voor het eerst geldig gepubliceerd in 1972 door Trewavas.

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

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Konia dikume é uma espécie de peixe da família Cichlidae.

É endémica de Camarões.

Referências

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Konia dikume: Brief Summary ( Portuguese )

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Konia dikume é uma espécie de peixe da família Cichlidae.

É endémica de Camarões.

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Dikume ( Vietnamese )

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dikume (tên khoa học Konia dikume) là một loài thuộc họ Cichlidae. Nó là loài đặc hữu của Cameroon.

Chú thích

  1. ^ Moelants, T. 2010. Konia dikume. In: IUCN 2012. IUCN Red List of Threatened Species. Version 2012.2. <www.iucnredlist.org>. Downloaded on ngày 21 tháng 4 năm 2013.

Tham khảo


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Dikume: Brief Summary ( Vietnamese )

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Cá dikume (tên khoa học Konia dikume) là một loài thuộc họ Cichlidae. Nó là loài đặc hữu của Cameroon.

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喀麥隆康尼麗魚 ( Chinese )

provided by wikipedia 中文维基百科
二名法 Konia dikume
Trewavas, 1972

喀麥隆康尼麗魚学名Konia dikume)為輻鰭魚綱鱸形目隆頭魚亞目慈鯛科的其中一,被IUCN列為極危保育類動物,分布於非洲喀麥隆西部Barombi湖流域,體長可達11.2公分,棲息在湖泊,以蚊子幼蟲為食,能適應湖泊溶氧量變化。

參考文獻

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喀麥隆康尼麗魚: Brief Summary ( Chinese )

provided by wikipedia 中文维基百科

喀麥隆康尼麗魚(学名:Konia dikume)為輻鰭魚綱鱸形目隆頭魚亞目慈鯛科的其中一,被IUCN列為極危保育類動物,分布於非洲喀麥隆西部Barombi湖流域,體長可達11.2公分,棲息在湖泊,以蚊子幼蟲為食,能適應湖泊溶氧量變化。

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