COMPARATIVE ANALYSIS OF SELECTED TISSUES OF BROWN TROUT FROM THE FISH POND AND RIVER PLIVA, BOSNIA AND HERZEGOVINA

Autor: Pajčin, Radojka, Roljić, Rajko, Ružić, Zoran, Nikolić, Vera, Marković, Zoran, Paraš, Smiljana
Jazyk: angličtina
Rok vydání: 2022
Předmět:
Zdroj: Croatian Journal of Fisheries : Ribarstvo
Volume 80
Issue 4
ISSN: 1848-0586
1330-061X
Popis: Potočna pastrva česta je vrsta ribe koja se uzgaja u otvorenim, protočnim ribogojilištima u konzumne svrhe na rijekama Bosne i Hercegovine. Lokalitet Pljeva na rijeci Plivi u srednjoj Bosni idealan je za uzgoj pastrve te uzgajivači ovih područja imaju dugu tradiciju uzgoja u otvorenim - protočnim ribogojilištima. U cilju sagledavanja morfoloških i histoloških obilježja pastrva iz ovih ribnjaka u usporedbi s onima izvan ribnjačkog uzgoja provedena je ova studija kroz tri sezone: proljeće, ljeto i jesen, kako bi se vidjela potpuna slika stanja odabranih tkiva i kondicije potočnih pastrva. Analizirana su fizičko-kemijska obilježja vode iz rijeke Plive kod Pljeve i iz ribogojilišta koji se bavi intenzivnim uzgojem potočnih pastrva. Ove analize su pokazale da ne postoje velika odstupanja u kvaliteti vode i da je voda u ribogojilištu dobre kvalitete. Izlovljeno je ukupno 90 jedinki kroz sve tri sezone i analizirane su morfometrijske karakteristike na deset parametara. Nakon disekcije provedena je histološka i stereološka analiza s ciljem komparacije tkiva jetre, želuca, škrga i mišića. Ove analize su pokazale značajne razlike u histoarhitekturi odabranih tkiva pastrva iz ribnjaka u odnosu na rijeku. Tkivo jetre bilo je s izmijenjenim oblikom hepatocita i prisustvom adipocita; tkivo želuca bilo je s jačom mukozom i slabijim mišićnim slojem; tkivo škrga imalo je niže respiratorne lamele, dok je mišićno tkivo imalo znatno prisustvo masnog tkiva kod pastrva iz ribogojilišta u odnosu na one iz rijeke. Sve promjene su posljedica kvalitete komercijalne hrane kao i nemogućnosti slobodnog kretanja.
Brown trout is a common type of fish grown for consumption in open and flowing fish ponds on the rivers of Bosnia and Herzegovina. We conducted this study during three seasons (spring, summer and autumn) to obtain a complete picture of the morphological and histological characteristics of selected trout tissues. The physicochemical characteristics of the water from the Pliva River near Pljeva and the fish pond where intensive breeding of trout is carried out were analyzed. These analyses have shown that there are no major deviations in water quality and that the water in the pond is of excellent quality. A total of 90 trout were harvested during all three seasons and their morphometric characteristics were determined by analyzing ten parameters. After the dissection of all individuals, histological and stereological analysis was performed to compare the tissues of the liver, stomach, gills and muscles. These analyses showed significant differences in the histoarchitecture of selected trout tissues from the pond compared to the river. Liver tissue had altered hepatocyte shape and presence of adipocytes; stomach tissue had stronger mucosa and weaker muscle layer; gill tissue had lower respiratory lamellae; while muscle tissue had a significant presence of adipose tissue in brown trout living in the fish pond compared to those in the river. All these changes are due to the quality of commercial feed and the inability to move freely.
Databáze: OpenAIRE
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