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Okadaic acid as a major problem for the seafood safety (Mytilus galloprovincialis) and the dynamics of toxic phytoplankton in the Slovenian coastal sea (Gulf of Trieste, Adriatic Sea)
ID Henigman, Urška (Avtor), ID Mozetič, Patricija (Avtor), ID Francé, Janja (Avtor), ID Knific, Tanja (Avtor), ID Grebenc, Stanka (Avtor), ID Dolenc, Jožica (Avtor), ID Kirbiš, Andrej (Avtor), ID Biasizzo, Majda (Avtor)

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Izvleček
This article presents the first results on shellfish toxicity in the Slovenian sea (Gulf of Trieste, Adriatic Sea) since the analytical methods for the detection of biotoxins (PSP, ASP, DSP and other lipophilic toxins) in bivalve molluscs were included in the national monitoring program in 2013. In addition to toxins, the composition and abundance of toxic phytoplankton and general environmental characteristics of the seawater (surface temperature and salinity) were also monitored. During the 2014–2019 study period, only lipophilic toxins were detected (78 positive tests out of 446 runs), of which okadaic acid (OA) predominated in 97 % of cases, while dinophysistoxin-2 and yessotoxins only gave a positive result in one sampling event each. The number of samples that did not comply with the EC Regulation for the OA group was 17 or 3.8 % of all tests performed, all of which took place from September to November, while a few positive OA tests were also recorded in December, April, and May. This toxicity pattern was consistent with the occurrence pattern of the five most common DSP-producing dinoflagellates, which was supported by the development of warm and thermohaline stratified waters: Dinophysis caudata, D. fortii, D. sacculus, D. tripos and Phalacroma rotundatum. The strong correlation (r = 0.611, p < 0.001) between D. fortii, reaching abundances of up to 950 cells L$^{−1}$, and OA suggests that D. fortii is the main cause of OA production in Slovenian waters. Strong interannual variations in OA and phytoplankton dynamics, exacerbated by the effects of anthropogenic impacts in this coastal ecosystem, reduce the predictability of toxicity events and require continuous and efficient monitoring. Our results also show that the introduction of the LC-MS/MS method for lipophilic toxins has improved the management of aquaculture activities, which was not as accurate based on mouse bioassays.

Jezik:Angleški jezik
Ključne besede:biotoxins, okadaic acid, toxic phytoplankton, LC-MS/MS, toxicity, Adriatic Sea, hydrobiology, marine biology, shellfish poisoning
Vrsta gradiva:Članek v reviji
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:VF - Veterinarska fakulteta
Status publikacije:Objavljeno
Različica publikacije:Objavljena publikacija
Leto izida:2024
Št. strani:13 str.
Številčenje:Vol. 135, art. 102632
PID:20.500.12556/RUL-158170 Povezava se odpre v novem oknu
UDK:574
ISSN pri članku:1568-9883
DOI:10.1016/j.hal.2024.102632 Povezava se odpre v novem oknu
COBISS.SI-ID:195397123 Povezava se odpre v novem oknu
Datum objave v RUL:27.05.2024
Število ogledov:107
Število prenosov:22
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Gradivo je del revije

Naslov:Harmful algae
Založnik:Elsevier
ISSN:1568-9883
COBISS.SI-ID:512209945 Povezava se odpre v novem oknu

Licence

Licenca:CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
Povezava:http://creativecommons.org/licenses/by/4.0/deed.sl
Opis:To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.

Sekundarni jezik

Jezik:Slovenski jezik
Ključne besede:biotoksini, okadaična kislina, toksični fitoplankton, toksičnost, Jadransko morje, hidrobiologija, morska biologija

Projekti

Financer:Drugi - Drug financer ali več financerjev
Program financ.:Administration of the Republic of Slovenia for Food Safety, Veterinary Sector and Plant Protection, National monitoring program for toxic marine phytoplankton and biotoxins in shellfish growing areas in the Slovenian sea

Financer:ARIS - Javna agencija za znanstvenoraziskovalno in inovacijsko dejavnost Republike Slovenije
Številka projekta:P1-0237
Naslov:Raziskave obalnega morja

Financer:ARIS - Javna agencija za znanstvenoraziskovalno in inovacijsko dejavnost Republike Slovenije
Številka projekta:P4-0092
Naslov:Zdravje živali, okolje in varna hrana

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