Antidepressants Modify Cryptic Behavior in Juvenile Cuttlefish at Environmentally Realistic Concentrations

Apolline Chabenat (1, 2, 3) , Thomas Knigge (3) , Cécile Bellanger (1, 2)

1 UNICAEN - Université de Caen Normandie
2 EthoS - Ethologie animale et humaine
3 SEBIO - Stress Environnementaux et BIOsurveillance des milieux aquatiques

Contamination of the marine environment by antidepressants may affect neurophysiological processes in nontarget organisms, such as the common cuttlefish, Sepia officinalis. The present study tested whether environmentally realistic concentrations of antidepressants, that is, fluoxetine alone (5 ng L-1) or cumulated with venlafaxine (2.5 or 5 ng L-1), affect camouflage in newly hatched cuttlefish. The results show that antidepressants improved uniform body patterns, whereas disruptive body patterns were not affected.

Mots clés: Development; Fluoxetine; Venlafaxine; Camouflage; Body color changes; Cephalopod; Sepia officinalis

Domaines: Toxicologie; Chimie; Sciences de l'environnement

Apolline Chabenat, Thomas Knigge, Cécile Bellanger. Antidepressants Modify Cryptic Behavior in Juvenile Cuttlefish at Environmentally Realistic Concentrations. Environmental Toxicology and Chemistry, 2021, 40 (9), pp.2571-2577. ⟨10.1002/etc.5149⟩. ⟨hal-03331873⟩