Physiological and Ethological Disruptions Induced by a Mixture of Saccharose/Sucralose 99.5/0.5 - A Study on Ants as Models


  • Universite Libre de Bruxelles, Faculte des Sciences, Bruxelles, 1050, Belgium
  • Universite Libre de Bruxelles, Bruxelles, 1070, Belgium


Experiments made on ants as biological models revealed that a marketed 1.3g saccharose/sucralose 99.5/0.5 mixture increased sugared water consumption, decreased general activity, precision of reaction, audacity, brood caring, cognition and ability in acquiring visual conditioning (short term memory), induced aggressiveness against nestmates, and slightly reduced tactile perception. It may not change the speed of locomotion and did not affect middle and long term memory. The adverse effects may be related to the strong sugared taste of the mixture (in presence of saccharose and the mixture, the ants slightly preferred the latter) though containing 4.7 times less sugar than an amount of saccharose providing equivalent sweetness, and to the toxic chloropropanols sucralose may produce. When ants consumed again sugar instead of a saccharose/sucralose mixture, their aggressiveness rapidly decreased during eight hours and entirely vanished in 29 hours.


Aggressiveness, Cognition, Conditioning, Food Consumption

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