Tetrodotoxin in Invasive Silver-cheeked Toadfish Lagocephalus sceleratus (Gmelin, 1789) in the Adriatic Sea
It is commonly thought that toxic compounds come only from anthropogenic sources; however, toxic compounds can be of natural origin; hence, we call them natural toxins. In the marine environment, some molluscs and crabs contain natural toxins produced by
- PDF / 500,496 Bytes
- 9 Pages / 439.37 x 666.142 pts Page_size
- 9 Downloads / 140 Views
nts 1 Introduction 2 The Entry of Invasive Species into the Mediterranean Sea 3 Pufferfish Toxicity 3.1 Analysis of Tetrodotoxin in Pufferfish Tissue of the Adriatic Sea Specimens 4 Conclusions References
Abstract It is commonly thought that toxic compounds come only from anthropogenic sources; however, toxic compounds can be of natural origin; hence, we call them natural toxins. In the marine environment, some molluscs and crabs contain natural toxins produced by symbiotic bacteria. Shellfish in addition to the accumulation of natural toxins (biotoxins) may produce toxic secondary metabolites. Some species of phytoplankton are known to produce potent natural toxins, which is also the case with some species of fish, especially pufferfish. The main feature of such toxins is thermostability, meaning they do not get destroyed through thermal food processing at any temperature and their toxicity remains unchanged. Here are presented the results of tetrodotoxin investigations in silver-cheeked toadfish Lagocephalus sceleratus (Gmelin, 1789) from the Adriatic Sea. It is a poisonous marine pufferfish that has reached the Mediterranean from the Red Sea through the Suez Canal (Lessepsian migration). Owing to its exceptional biological features such as rapid growth, high reproduction potential and lack of natural predators, it soon established large self-sustainable populations mostly in the Eastern Mediterranean Sea. This species has also been recorded in the Adriatic Sea; however, its presence is still of periodic nature, and currently there is no evidence which would suggest
I. Ujević, R. Roje-Busatto (*), B. Dragičević, and J. Dulčić Institute of Oceanography and Fisheries, Split, Croatia e-mail: [email protected]; [email protected]; [email protected]; [email protected] Danijela Joksimović, Mirko Đrurović, Igor S. Zonn, Andrey G. Kostianoy, and Aleksander V. Semenov (eds.), The Montenegrin Adriatic Coast: Marine Chemistry Pollution, Hdb Env Chem, DOI 10.1007/698_2020_683, © Springer Nature Switzerland AG 2020
I. Ujević et al.
permanent population establishment. Tetrodotoxin is a very potent toxin that has been detected in organs such as the skin, muscle, liver and gonads of the pufferfish specimens collected in the Adriatic Sea. Keywords Adriatic Sea, Invasive species, LC-MS, Pufferfish, Tetrodotoxin
1 Introduction Phenomenon of Lessepsian migration, an influx of species from the Red Sea to the Mediterranean Sea through the Suez Canal, has been reshaping the ecosystem of the Mediterranean Sea for over a century. Effects of such migrations have particularly affected the area of the Eastern Mediterranean where some of the Lessepsian species have established large populations threatening its native ecosystems [1]. In the recent years, the Adriatic Sea is also being invaded by the Lessepsian species whose effects are still not evaluated, but it can be expected that in the case of establishment of certain species, it could have severe consequences [2]. Some of such species are extreme predators and thus can directly affect the food web in the
Data Loading...
