Olfactory sensitivity of spider monkeys (Ateles geoffroyi) for six structurally related aromatic aldehydes
Independent thesis Advanced level (degree of Master (Two Years)), 40 credits / 60 HE creditsStudent thesis
For many years, primates have been considered to be animals with a poorly developed sense of smell. However, in recent years several studies have shown that at least some primate species have a high olfactory sensitivity for a variety of odorants. The present study used a two-choice instrumental conditioning paradigm to test the olfactory sensitivity for six aromatic aldehydes in four spider monkeys (Ateles geoffroyi). With helional, cyclamal,canthoxal and lilial all animals discriminated concentrations below 1 ppm from the odorless solvent, with single individuals even scoring better. With 3-phenyl-propionic aldehyde all animals detected concentrations below 2 ppb, and with bourgeonal even below 0.3 ppb. The detection thresholds of the odorants changed systematically with molecular structure. Addition of a dioxo or methoxy group to the benzene ring led to an increase in threshold values,while the absence of a methyl group close to the aldehyde moiety was linked to a low threshold value for the odorant. The study shows that spider monkeys have a well developed olfactory sensitivity for aromatic aldehydes.
Place, publisher, year, edition, pages
2009. , 20 p.
Aromatic aldehydes, olfactory detection thresholds, spider monkeys
IdentifiersURN: urn:nbn:se:liu:diva-18796ISRN: LiTH-IFM-Ex--09/2133--SEOAI: oai:DiVA.org:liu-18796DiVA: diva2:221305
Laska, Matthias, Professor
Jensen, Per, Professor