Naslov
The concentration of tetrodotoxin (TTX) in invasive species Lagocephalus sceleratus (Gmelin 1789) in the Adriatic Sea (Croatia)

Autori
Ujević, Ivana ; Roje Busatto, Romana ; Dulčić, Jakov ; Pralija, Anka ; Dragičević Branko

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
ICHA The 17th International Conference on Harmful Algae Brazil 2016, Abstract book / ICHA - Florianopolis : ICHA, 2016, 127-128

Skup
The 17th International Conference on Harmful Algae

Mjesto i datum
Florianópolis, Brazil, 09.10.2016. - 14.10.2016

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
tetrodotoxin; invasive species; Adriatic Sea

Sažetak
Silver-cheeked toadfish, Lagocephalus sceleratus (Gmelin, 1789), a poisonous marine pufferfish that has reached the Mediterranean from the Red Sea through the Suez Canal (Lessepsian migration) where it soon established its own ecological niche due to its exceptional biological features such as rapid growth, high fecundity and fertility. There are indications that this fish species had managed to establish its population in the Adriatic Sea, but these findings still need to be confirmed by the presence of its early developmental stages. Recent surveys located the adult specimens in the southern and central part, but it is possible that the temperature is still a limiting factor for invasion of the northern part of the Adriatic Sea. It is known that L. sceleratus contains a potent neurotoxin, tetrodotoxin (TTX) that blocks sodium channels necessary for the muscle contractions. Therefore the skin, muscle, liver and gonads were analysed from the two specimens caught in the central Adriatic Sea. Tetrodotoxin was quantified in 1% acetic methanol extracts on LC-MS/MS in MRM positive mode. Among the four tissue samples analysed, the highest average toxin level was found in gonads (48.7 mg kg-1) and the lowest average was in muscle tissue (0.8 mg kg-1). The average TTX concentration in skin was (1.5 mg kg-1) slightly higher than in the muscle tissue, while in liver it was 30.6 mg kg-1.

Izvorni jezik
Engleski

Znanstvena područja
Geologija, Kemija

POVEZANOST RADA