Pregled bibliografske jedinice broj: 164871
Growth and condition of endemic trout Salmothymus obtusirostris in a Dalmatian river Jadro
Growth and condition of endemic trout Salmothymus obtusirostris in a Dalmatian river Jadro // Reconciling Fisheries with Conservation: The Challenge of Managing Aquatic Ecosystems / The David and Lucile Packard fundation (ur.).
Vancouver: British Columbia, 2004. (poster, međunarodna recenzija, sažetak, znanstveni)
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Naslov
Growth and condition of endemic trout Salmothymus obtusirostris in a Dalmatian river Jadro
Autori
Treer, Tomislav ; Aničić, Ivica ; Safner, Roman ; Odak, Tea ; Piria, Marina
Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni
Izvornik
Reconciling Fisheries with Conservation: The Challenge of Managing Aquatic Ecosystems
/ The David and Lucile Packard fundation - Vancouver : British Columbia, 2004
Skup
4 th World Fisheries Congress
Mjesto i datum
Vancouver, Kanada, 02.05.2004. - 06.05.2004
Vrsta sudjelovanja
Poster
Vrsta recenzije
Međunarodna recenzija
Ključne riječi
Soft-muzzled trout; river Jadro; growth
Sažetak
Soft-muzzled trout (Salmothymus obtusirostris) is the endemic species in the Dalmatian division of Euro-Mediterranean sub region. Its endangered subspecies S.o. salonitana inhabits only two short rivers – the Jadro, which is the original habitat, and the Žrnovnica, where it was transferred about 25 years ago. The growth and condition of this fish during the post-spawning period in the Jadro river was studied. The specimens caught ranged from 8 to 29 cm in standard length and from 9 to 350 g in weight. The growth in standard length could be expressed by the following expression: Lt = 34.99 (1-e-0.3467 (t-0.0041)). The overall growth performance was 6.06, which is very similar to other populations of this species, indicating the reliability of the growth curve, as this parameter has minimum variance within the same species. The length - weight relationship expectedly showed negative allometric growth with a low b-value of 2, 76 (W=0.03.L2, 76 ; r=0.994 ; p<0.01) and also negative relationship between condition factor and standard length (CF=1.964– 0.023 SL ; r =-0.537 ; p<0.05). The fish from this river grew somewhat smaller in length and weight than in the other river Žrnovnica. That is probably a consequence of the fact that the river Jadro flows through very urban suburb of the Dalmatian largest city Split, where the most of the river’ s bed is regulated. There is also higher fish species competition in this river. Hence, the protection of this endangered endemic species is of the utmost importance.
Izvorni jezik
Engleski
Znanstvena područja
Poljoprivreda (agronomija)
POVEZANOST RADA
