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Biometrical and biological features of Alburnus alburnus × Rutilus rubilio natural hybrids from Lake Mikri Prespa, northern Greece
Author(s) -
Crivelli A. J.,
Dupont F.
Publication year - 1987
Publication title -
journal of fish biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.672
H-Index - 115
eISSN - 1095-8649
pISSN - 0022-1112
DOI - 10.1111/j.1095-8649.1987.tb05275.x
Subject(s) - meristics , biology , rutilus , hybrid , zoology , cyprinidae , morphometrics , fishery , ecology , fish <actinopterygii> , botany
Morphometric and meristic characteristics of a rare hybrid between the Adriatic roach. Rutilus rubilio , and the bleak, Alburnus alburnus , discovered in Lake Mikri Prespa, north‐western Greece are described. Axis 1 and 2 of a discriminant analysis using all morphometric and meristic features explains 99.5% of the total variability of the hybrid and both its parents. No back‐crossing is detected in the discriminant analysis: all hybrids found are F1 fish. Age and length of the hybrid and its parents were measured; the best‐fit growth model is the logistic curve. Growth of the hybrid is faster than that of the Adriatic roach and slightly faster than that of the bleak: this indicates heterosis. Problems in the systematics of genera of European cyprinids are discussed.