POLYBROMINATED FLAME RETARDANTS (PBDES) TOXICOLOGICAL TESTS ON THE APPLE SNAIL (Pomacea canaliculata, Caenogastropoda, Ampullariidae)

KOCH, EDUARDO; ARRIGONI, PAULA; ALTAIRANO, JORGELINA; CIOCCO, NÉSTOR

San Miguel de Tucuman

Congreso; 3ra Reunion Conjunta de Sociedades de Biología de la República Argentina; 2015

Sociedades de Biología de la Republica Argentina

Polybrominated diphenyl ethers (PBDEs) are a group of industrial chemicals belonging to the family of brominated flame retardants comprising 209 congeners depending on the number and position of bromines partners. PBDEs are added to the polymers present in the electronic boards, computers, televisions, automobiles and aircraft, among others, to inhibit or delay the onset and spread of fire. Congener BDE-209 is the most widely used and its production is regulated by the Stockholm Convention. The apple sanil, Pomacea canaliculata, has been proposed as a biomarker of PBDEs. The aim of this work was to explore the toxic effects of BDE-209 on the species mentioned. P. canaliculata individuals, placed in aquaria were exposed, for 42 days, to diets enriched with congener BDE-209 at three different concentrations (400 (C1), 4700 (C2) and 8300 (C3) g-1 mg lipid). All animals survived the treatment. An increase, not statistically significant, in the frequency of copulation in C3 treatment was recorded. The percentage of embryonated eggs showed no significant differences between treatments for any of the tested concentrations. However, spawning register showed a significant decrease in the concentration C2 group, with alteration in the eggs? color, registered using a spectroradiometer. No differences between treatments were observed in the histology of the gonads. The results are encouraging to explore possible detoxification mechanisms to protect P. canaliculata BDE-209.