Showing posts with label Research. Show all posts
Showing posts with label Research. Show all posts

Friday, March 31, 2017

Giving the underserved the care they deserve

Nobody likes strong smells coming from other human beings. It's just that social convention: you are nice, if you smell nice, and you are a monster - like Shakespeare's Caliban - if you smell bad.

But it could be the brunt of the genetic or environmental misfortune



Wednesday, July 28, 2010

Hormonal Manipulation of Olfactory Cues, or How to Lose a Guy in 10 days

This post was chosen as an Editor's Selection for ResearchBlogging.org
Ring-tailed Lemur (Lemur catta) at Berenty Pri...Image via Wikipedia
Body odors are important cues used for social and sexual discrimination. As was shown many times, animals can easily smell age-, health- and genetics-related  differences.  Recent study of our large-eyed relatives, ring-tailed lemurs, demonstrate that drugs can alter body scents and change behavior.

Researchers examined changes in endocrine and  semiochemical profiles of sexually mature female lemurs treated with hormonal contraceptives during their breeding season. Genetic diversity and kinship were estimated using 11–14 microsatellite loci and pairwise genetic distances. Gas chromatography-mass spectrometry (GCMS) was used to detect the volatile compounds in odor. A rater blind to the treatments scored lemur male behavior in regards to female odors. 

The conclusion? Contraceptives change chemical ‘signature’, minimizing distinctiveness and genetic fitness cues. No more can the males determine which females are genetically and physically beautiful. All contracepted females lost their individuality and started to smell funny.  

What about hormones and chemicals in our food?  Maybe one day humans will wake up and realize that something is lost? May it will happen  sooner rather than later...

For those interested in helping with our research of human environmental malodor - check our studies or this call for collaboration.   

ResearchBlogging.org

Jeremy Chase Crawford,, Marylène Boulet,, & Christine M. Drea (2010). Smelling wrong: hormonal contraception in lemurs alters critical female odour cues Proc. R. Soc. B published online before print July 28, 2010


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