Izvorni znanstveni članak
Length growth of the gudgeon Gobio gobio (Linnaeus, 1758) in the Vardar river (The Republic of Macedonia)
S. Georgijev
Sažetak
The river Vardar is the biggest potamian biotope in the central part of the Balkan Peninsula. Along the 300 km long cross that was studied, a total number 24 species were collected from the examined 12 profiles; from the total of 3019 specimens of widespread Euro-Asian species that were collected, G. gobio was among the eight most frequently found ones, and with participation of 12.5% it was placed on the third place. The research of the lent h growth was done on the scales taken from 150 samples, using the R o s a L e e method. Consequently, a correction of 25 mm was determined. The smallest exemplar (1) was 42 mm long, and it was aged 1+, and the longest one was 108 mm, aged 5+. The results were calculated for both the male and the female specimens. The conclusion reached was that this cyprinid species is relatively resistant to pollution; therefore, the density of its population does not seem to be in jeopardy as it was the case with some other more sensitive native species. The length growth depends on the global climate circumstances; the Vardar River gudgeon grows as fast as the other Mediterranean populations, both lotic and limnetic, but slower than the Middle European populations.
Ključne riječi
river Vardar; G. gobio; length growth; fluent biotope; Balkan Peninsula
Hrčak ID:
14543
URI
Datum izdavanja:
5.4.2002.
Posjeta: 1.053 *