Tilapia (genus): Difference between revisions

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'''''Tilapia''''' is a large [[genus]] of [[cichlid]] fishes [[endemic (ecology)|endemic]] to Africa. The [[Common name#Biological common names|common name]] "[[tilapia]]" is also used for [[tilapiinae|tilapiine]] [[cichlid]]s of the genera ''[[Oreochromis]]'' and ''[[Sarotherodon]]'', which were long contained in ''Tilapia''.
'''''Tilapia''''' is a large [[genus]] of [[cichlid]] fishes [[endemic (ecology)|endemic]] to Africa. The [[Common name#Biological common names|common name]] "[[tilapia]]" is also used for [[tilapiinae|tilapiine]] [[cichlid]]s of the genera ''[[Oreochromis]]'' and ''[[Sarotherodon]]'', which were long contained in ''Tilapia''.


There is strong indication that even the remaining ''Tilapia'' do not constitute a [[monophyletic]] group, but rather an assemblage [[basal (biology)|basal]] among tilapiines and possibly even [[paraphyletic]] with non-[[tilapiinae|tilapiine]] cichlids. For example, ''[[Tilapia bemini]]'' seems to be closer to ''[[Astatoreochromis]]'', and a group containing ''[[Tilapia rendalli]]'', ''[[Tilapia ruweti]]'' and ''[[Tilapia zillii]]'' is probably even more distant, based on [[mtDNA]] [[DNA sequence|sequence]] analysis. Research is hampered by the fact that [[Hybrid (biology)|hybridization]] runs rampant in these fishes, and that judging from mtDNA alone [[taxa]] may appear to be closer to others than they actually are.(Nagl ''et al.'' 2001)
There is strong indication that even the remaining ''Tilapia'' do not constitute a [[monophyletic]] group, but rather an assemblage [[basal (biology)|basal]] among tilapiines and possibly even [[paraphyletic]] with non-[[tilapiinae|tilapiine]] cichlids. For example, ''[[Tilapia bemini]]'' seems to be closer to ''[[Astatoreochromis]]'', and a group containing ''[[Tilapia rendalli]]'', ''[[Tilapia ruweti]]'' and ''[[Tilapia zillii]]'' is probably even more distant, based on [[mtDNA]] [[DNA sequence|sequence]] analysis. Research is hampered by the fact that [[Hybrid (biology)|hybridization]] runs rampant in these fishes, and that judging from mtDNA alone [[taxa]] may appear to be closer to others than they actually are. (Nagl ''et al.'' 2001)


==Species==
==Species==

Revision as of 19:16, 14 February 2010

Tilapia
Zebra tilapia, Tilapia buttikoferi
Scientific classification
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Genus:
Tilapia

Species

40; see text

Synonyms

Chromis Günther, 1862 (non Cuvier, 1814: preoccupied)

Tilapia is a large genus of cichlid fishes endemic to Africa. The common name "tilapia" is also used for tilapiine cichlids of the genera Oreochromis and Sarotherodon, which were long contained in Tilapia.

There is strong indication that even the remaining Tilapia do not constitute a monophyletic group, but rather an assemblage basal among tilapiines and possibly even paraphyletic with non-tilapiine cichlids. For example, Tilapia bemini seems to be closer to Astatoreochromis, and a group containing Tilapia rendalli, Tilapia ruweti and Tilapia zillii is probably even more distant, based on mtDNA sequence analysis. Research is hampered by the fact that hybridization runs rampant in these fishes, and that judging from mtDNA alone taxa may appear to be closer to others than they actually are. (Nagl et al. 2001)

Species

References

  • Froese, Rainer and Pauly, Daniel, eds. (2006). Species of Tilapia in FishBase. October 2006 version.
  • Nagl, Sandra; Tichy, Herbert; Mayer, Werner E.; Samonte, Irene E.; McAndrew, Brendan J. & Klein, Jan (2001): Classification and Phylogenetic Relationships of African Tilapiine Fishes Inferred from Mitochondrial DNA Sequences. Molecular Phylogenetics and Evolution 20(3): 361–374. doi:10.1006/mpev.2001.0979