Naslov
Report on ichthyological survey on Hutovo Blato wetlands

Autori
Glamuzina, Branko ; Tutman, Pero ; Conides, Alexis

Izvornik
Institut za oceanografiju i ribarstvo, Dubrovnik, Split

Vrsta, podvrsta
Ostale vrste radova, elaborat/studija

Godina
2001

Ključne riječi
ichthyofauna; Hutovo Blato wetlands; qualitative and quantitative composition; introduced; native and migratory species

Sažetak
As a part of Life Third County project “ Development of a new management strategy for the Hutovo Blato wetlands, B&H” survey on characteristics of fish community was performed. Important habitats were chosen based on their characteristics and great differences in ecological characteristics. Special attention was given to endemic and under-researched native species such as Neretvanian nase, Chondrostoma kneri and dentex trout, Salmo dentex. Reports on characteristics of these two species offer first results on their spawning, length-weight relationship, diet and distribution, and present major scientific value of this survey. This is accompanied with finding of new species from small gobid genus Knipowitcshia, which description is not finished yet, and will be presented in the final report of the project achievements. Composition of specific wetland habitats was evaluated quantitatively and qualitatively. This shows that abundance of introduced species is on critical level, especially in the Svitava and Deran Lake. The greatest threat is pumpkinseed, Lepomis gibossus, which today present second fish in number, after native roach, Rutilus basak. In general, all shallow and warmer lakes are dominated with introduced species, such as tench, Tinca tinca or goldfish, Carassius auratus auratus. Native species still dominate in the colder water bodies, such as Jelim and Škrka Lake and small colder streams. The most abundant native species is roach. The most valued species for fishery is tench, which is especially abundant in Deran Lake and has strong population structure. In conclusions we gave recommendations for future management of these wetlands considering habitat protection and species conservation and enhancement.

Izvorni jezik
Engleski

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