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Analysis of the presence of microplastics in the common pandora (Pagellus erythrinus) from the Northern Adriatic
Summary
Researchers investigated microplastic contamination in the common pandora fish (Pagellus erythrinus) collected from the Northern Adriatic, examining gastrointestinal contents to characterise the types, sizes, and polymer compositions of ingested plastic particles. The findings confirm microplastic uptake in a commercially important marine species, raising concerns about the transfer of plastic contaminants through the seafood supply chain.
Problem mikroplastike u morima prepoznat je kao problem globalnih razmjera. Razgradnjom većih plastičnih predmeta nastaje mikroplastika koja, iako je ljudskom oku nevidljiva, ne nestaje razgradnjom, već postaje prijetnja morskim organizmima. U tom obliku, ona vrlo lako dospijeva u probavni sustav organizama odnosno u cjelokupni hranidbeni lanac nanoseći pri tome štetu svakoj jedinki. Svjesnost o prijetnjama mikroplastike za život svih organizama, a naročito organizama u morima, polazna je osnova provedenog istraživanja na jedinkama arbuna (P. erythrinus) s područja Medulinskog zaljeva na jugu Istarskog poluotoka. Istraživanjem je obuhvaćen 31 uzorak probavila arbuna u kojem je laboratorijskom obradom izolirano 67 mikroplastičnih čestica. Među izoliranim česticama, obzirom na oblik mikroplastike, dominantni su oblici vlakana, a prema kriteriju boje, vrijednosno najzastupljenije su čestice plave boje (42,0 %). Analizom je utvrđen i udio filamenata po jedinki po mjesecu ulova čime je izveden zaključak o korelaciji između broja pronađenih mikroplastičnih niti prema razdoblju mrijesta i prema temperaturi mora u ovisnosti o godišnjem dobu. Rezultati provedenog istraživanja ukazuju na prisutnost filamenata mikroplastike u jedinkama arbuna iz Medulinskog zaljeva kao i na potencijalnu onečišćenost spomenutog akvatorija što može biti uzrokovano različitim izvorima onečišćenja. Svakako, pri tumačenju rezultata istraživanja, treba uzeti u obzir i mogućnost kontaminacije uzoraka putem zraka tijekom laboratorijske obrade. Opisano upućuje na potrebu provođenja daljnjeg istraživanja, ali i na nužnost kontinuiranog monitoringa kako Medulinskog zaljeva tako i ostalih zaštićenih morskih područja.
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