Short communication, Note
https://doi.org/10.2478/cjf-2019-0015
THE IMPACT OF TREATED WASTEWATERS ON FISH BACTERIAL FLORA: A PUBLIC HEALTH PERSPECTIVE
Natalija Topić Popović
orcid.org/0000-0002-8897-0014
; Laboratory for Aquaculture Biotechnology, Rudjer Bošković Institute, Zagreb, Croatia
Slavko Kepec
; Virkom d.o.o., Public Water Supply and Wastewater Services, Virovitica, Croatia
Snježana P. Kazazić
; Laboratory for Mass Spectrometry, Rudjer Bošković Institute, Zagreb, Croatia
Josip Barišić
; Laboratory for Aquaculture Biotechnology, Rudjer Bošković Institute, Zagreb, Croatia
Ivančica Strunjak-Perović
orcid.org/0000-0002-6791-7513
; Laboratory for Aquaculture Biotechnology, Rudjer Bošković Institute, Zagreb, Croatia
Sanja Babić
; Laboratory for Aquaculture Biotechnology, Rudjer Bošković Institute, Zagreb, Croatia
Rozelindra Čož-Rakovac
; Laboratory for Aquaculture Biotechnology, Rudjer Bošković Institute, Zagreb, Croatia
Abstract
Wastewaters from a treatment plant discharging into a canal harboring fish may present sources of microbiological hazard for wild fish. Such fish, inhabiting microbiologically polluted bodies of water, can be contaminated by human pathogens and, if used for human consumption, may pose a risk to public health. Hence, in this work the aim was to identify tested strains from tissues of wild fish living in the receiving water bodies, captured fromlocations up to 12 km from the point of discharge of treated water of town Virovitica in order to assess the bacterial threat of the WWTP on fish and potentially on public health. A rather rich diversity of bacterial genera wasisolated from gill tissues and internal organs. The most frequent isolate was Aeromonas hydrophila which has gained public health recognition as an opportunistic pathogen. Vibrio cholerae, an indicator bacterium for aquatic contamination, was retrieved from all investigated tissues. Opportunistic human pathogens as well as some zoonotic agents were also retrieved from fish tissues (Enterobacter amnigenus, Acinetobacter spp., Ochrobactrum anthropi, Pseudomonas aeruginosa, Flavimonas (Pseudomonas) oryzihabitans, Shewanella putrefaciens and others). Public health hazard is particularly pronounced regarding local recreational fishermen who fish out, handle and consume fish from respective waters.
Keywords
bacteria; fish; wastewater treatment
Hrčak ID:
225888
URI
Publication date:
30.9.2019.
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