Freshly collected male
Freshly collected male of Oreochromis chungruruensis from Lake Kiungululu [Tanzania].Foto von George Turner. (28-Nov.-2011). identifiziert durch George Turner

Familie
Cichlidae

Unterfamilie
Pseudocrenilabrinae

Tribus
Oreochromini

Gattung
Oreochromis

Status
valide


Verwalter

Veröffentlicht:

Zuletzt aktualisiert am :
20-Nov.-2015

Oreochromis chungruruensis (Ahl, 1924)


Erstbeschreibung als Tilapia chungruruensis:

ZooBank:AD990361-7254-4E62-96AD-8F01D1A2E650.

  • Ahl, Ernst. 1924. "Über einen neuen Cichliden aus Ost-Africa". Zoologische Anzeiger. v. 59 pp. 86-87 (crc01167)
cares

Artenschutz: Oreochromis chungruruensis wurde durch die Internationale Union für die Erhaltung der Natur (IUZN) in der Roten Liste bedrohter Arten bewertet als (CR) vom Aussterben bedroht (2006). IUCN has red listed the species as ‘Critically Endangered’. The rationale is given that it is “restricted to a single small crater lake, which is subject to ongoing habitat loss due to siltation and in which the extent of occurrence fluctuates greatly due to changes in lake level during drought years” (Bayona, 2006). These seem unlikely threats as the lake is steep-sided and very deep. However, there is no restriction on fishing (a huge gill-net was in use in July 2011), nor on introduction of exotic species. Indeed, Tanzanian Government Fishery Officers claimed to have successfully introduced Black Bass to the lake to control snails that carry schistosomiasis (bilharzia). Extensive surveys of the lake in 2011 revealed neither vector snails, nor black bass. However, both Coptodon rendalli and T. sparrmanii appear to be established in the lake. As neither species is present in the Berlin collections, it seems likely that both have been introduced. Exotic Oreochromis species have recently been introduced into most water bodies in Tanzania, and attempts to introduce Nile Tilapia were mentioned. Such an introduction, if successful, could quickly lead to the extinction or genetic dilution of the species through competition or hybridization.

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