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Record of two established populations of Nile tilapia, Oreochromis niloticus , in freshwaters of northern Italy
Author(s) -
Bianco P. G.,
Turin P.
Publication year - 2010
Publication title -
journal of applied ichthyology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.392
H-Index - 62
eISSN - 1439-0426
pISSN - 0175-8659
DOI - 10.1111/j.1439-0426.2009.01315.x
Subject(s) - oreochromis , nile tilapia , citation , fish <actinopterygii> , biology , fishery , tilapia , library science , genealogy , history , computer science
The African Nile tilapia, Oreochromis niloticus (L.), is a cichlid fish native to the large lakes and rivers of Africa. About six subspecies were recognised by Trewavas (1983); a subspecies, O. niloticus tana, was described for Lake Tana by Seyoum and Kornfield (1992). More recent molecular studies have revealed several differences between eastern and western African populations, which are in disagreement with Trewavas (1983) subspecific classification (Rognon and Guyomard, 1997). From our preliminary diagnosis the species found to be established in the Venetian Region is O. niloticus niloticus (sensu Trewavas, 1983), but we report this taxon as O. niloticus whilst awaiting further taxonomic revision of this subspecies complex. The first observation of Nile tilapia in freshwaters of Italy was in 2001, when the species was found in a small stretch of a