[MARMAM] New publication on olfactory abilities in California sea lions

Isabelle Charrier isabelle.charrier at cnrs.fr
Thu Apr 15 08:19:51 PDT 2021

Dear Colleagues,

My collaborators and I are pleased to announce our new publication in 
Physiology & Behavior entitled "Odor discrimination in terrestrial and 
aquatic environments in California sea lions (Zalophus californianus) 
living in captivity". https://doi.org/10.1016/j.physbeh.2021.113408 

The paper can be found online 
<https://authors.elsevier.com/a/1csCI7Gm%7EFGif>, or you can contact me 
for the pdf.

_*Abstract: *_Pinnipeds, as any mammal species, use multimodal signals, 
including olfactory ones, to ensure vital functions. Thus, some pinniped 
species seem able to use olfaction in both social and foraging contexts 
and to discriminate between different odors in air including both 
natural and artificial odors, but studies on that topic remain scarce. 
Here, we studied the olfactory capabilities of California sea lions 
living in captivity at La Flèche Zoo (France) in both terrestrial and 
aquatic environments. We used two categories of odors: social odors 
(from familiar individuals of the same group, unfamiliar individuals 
from another Zoo, animal zookeepers and a terrestrial carnivore) and 
non-social odors (food and odors identified as repellents in certain 
vertebrates). Several behavioral parameters were measured and analyzed 
as the number and duration of contact with the odor, mouth openings, 
vocalizations (air only) and air bubble production (water only). Our 
results, although limited by the low number of animals monitored 
(/n/ = 5), suggest that California sea lions are able to discriminate 
between different odors both in the air and under water. In the aquatic 
environment, the process allowing the perception of odors remains to be 
characterized. Applications to this work could be considered in captive 
conditions as well as in the wild.

Best regards,
Isabelle Charrier

Acoustic Communications Team, Department Cognition & Network Neuroscience
Institut des Neurosciences Paris Saclay (NeuroPSI), UMR 9197
Université Paris Sud, Bat.446, 91405 Orsay, FRANCE
Tel:+33 (0)	Fax:+33 (0)
Email: isabelle.charrier at cnrs.fr

Team website: http://www.cb.u-psud.fr



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