The exposure to water with cigarette residue changes the anti-predator response in female Swiss albino mice
2018
Cardoso, LetíciaSilva | Estrela, FernandaNeves | Chagas, ThalesQuintão | da Silva, WellingtonAlves Mizael | Costa, DenysRibeiro de Oliveira | Pereira, Igor | Vaz, BoniekGontijo | Rodrigues, AlineSueli de Lima | Malafaia, Guilherme
Recent studies have shown that cigarette consumption affects much more than human health. Smoked cigarette butt (SCB) disposal into the environment can bring little-known negative biological consequences to mammals, since it contains many organic and inorganic toxic chemical constituents. Thus, we aim at assessing whether the ingestion of water with leached SCB for 60 days by female Swiss mice changes their defensive behavioral response to potential predators (cats and snakes). We worked with the following groups of animals: control (pollutant-free water), water with environmental concentration of SCB (1.9 μg/L of nicotine), and concentration 1000 times higher (EC1000×). Our data show that the treatments did not cause locomotor, visual, auditory, and olfactory deficit in the animals. However, we observed that the animals exposed to the pollutants did not present behavioral differences in the test session with or without the snake. On the other hand, animals in all groups showed defensive behavior when the test was conducted with the cat in the apparatus. However, female mice presented weaker response than the control. Thus, our data point towards the potential neurotoxic damage caused to mice who have ingested water with SCB residues, even at low concentrations.
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