Naslov
Growth pattern of the endemic Neretvan roach, Rutilus basak (Heckel, 1843) in the Hutovo Blato wetland

Autori
Matić-Skoko, Sanja ; Tutman, Pero ; Dulčić, Jakov ; Prusina, Ivana ; Đođo, Željana ; Pavličević, Jerko ; Glamuzina, Branko

Izvornik
Journal of Applied Ichthyology (0175-8659) 27 (2011), 3; 813-819

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
growth pattern; freshwater; endemic; Rutilus basak

Sažetak
The growth pattern of the endemic Neretvan roach, Rutilus basak from the Hutovo Blato wetland was analyzed. A total of 441 specimens ranging from 6.0 to 21.7 cm TL were obtained by electro fishing between December 2007 and November 2008. The male - female ratio for all fish combined was 0.33:1.00 ; it changed across length classes. The spawning period extended from February to April, with a peak in the first half of March. The maximum observed age was 10 years. Predominance of age classes 1 to 5 in the catch (77.0% of individuals) was noted. The length-weight relationship showed a positive allometric growth (b = 3.321 ; R2 = 0.957). The parameters of the von Bertalanffy equation were: L∞ = 20.201 cm ; K = 0.257 per year ; t0 = -1.554 year ; R2 = 0.977. This study revealed that R. basak invests energy in reproduction rather than in body size and thus has a relatively fast growth, short life span and precocious maturity. Moreover, elementary biological population parameters are provided that can be used for conservation purposes.

Izvorni jezik
Engleski

Znanstvena područja
Biologija

POVEZANOST RADA