Navigation Links
Love at first smell

Why do some males smell better than others? Scientists at Cardiff University, in collaboration with colleagues at Max-Plank Society, Germany ?and the help of stickleback fish - have identified the chemical responsible.

The researchers found in a study of sticklebacks, that males with body odour that is particularly attractive to females produce small protein fragments (known as "peptides").

To prove this, the researchers produced a synthetic "perfume" containing a mixture of protein fragments. By manipulating the combination of fragments in the perfume, the sexual attractiveness of males could be increased. In the experiment none of the females being tested could see the males. Even males previously rejected by females were rendered irresistible after the synthetic perfume had been applied.

Smell is important when choosing a partner, not only for humans but also fish. To fight disease, the body's Major Histocompatibility Complex (MHC) molecules identify a disease as a foreign invader. Different MHC molecules fight different diseases, so it's important to have a mix of MHC types. Females use smell to identify partners with suitable MHC molecules: choosing only males with the correct mix of immune genes critical for the survival of future offspring.

In the experiment females were fooled by the protein fragments into believing that males with insufficient MHC molecules would provide offspring with the ideal number of MHC types. However, when the perfume was added to males that already had the ideal range of MHC molecules, females could also be fooled into believing that these males smelled repulsive: having too many immune genes for offspring.

Dr Siân Griffiths, Cardiff School of Biosciences said: "Since sticklebacks use the same molecules to communicate information about their immune system as other vertebrates, this experiment can be assumed to be important for many animals, including humans. Humans have used perfumes for thousa nds of years. However, it seems that our choice of perfume should depend on our MHC genes. Perhaps these results explain why some perfumes smell good on some people and terrible on others."

Professor Thomas Boehm, Max-Plank Society said: "The new results raise the question of whether humans can also gather information about MHC on the basis of peptides."


'"/>

Source:Cardiff University


Related biology news :

1. A genes first kiss sets off that affair known as puberty
2. Worlds largest rainforest drying experiment completes first phase
3. PCRM develops worlds first cruelty-free insulin assay
4. Expression Project for Oncology (expO) completes first phase of standardized gene expression analyses
5. World-first Living Donor Islet Cell Transplant A Success; Procedure Offers Promise For Diabetics
6. DuPonts first biologically derived polymer receives global recognition
7. Anti cancer virotherapy well tolerated in first human administration, research finds
8. Unlike other mammals, newborn dolphins and orcas stay active 24/7 during first months of development
9. The first impact factor for PLoS Biology ?13.9
10. Moffitt-USF head toward first human trials of anti-cancer drug that targets protein AKT
11. Researchers find first evidence of venom system in extinct mammal
Post Your Comments:
*Name:
*Comment:
*Email:


(Date:4/28/2016)... BANGALORE, India , April 28, 2016 /PRNewswire/ ... product subsidiary of Infosys (NYSE: INFY ), and ... global partnership that will provide end customers with ... banking and payment services.      (Logo: http://photos.prnewswire.com/prnh/20130122/589162 ... area for financial services, but it also plays a fundamental ...
(Date:4/26/2016)... 2016 Research and Markets has ... Market 2016-2020"  report to their offering.  , ,     ... The analysts forecast the global multimodal biometrics market ... the period 2016-2020.  Multimodal biometrics is ... as the healthcare, BFSI, transportation, automotive, and government ...
(Date:4/15/2016)... DUBLIN , April 15, 2016 ... of the,  "Global Gait Biometrics Market 2016-2020,"  report ... http://photos.prnewswire.com/prnh/20160330/349511LOGO ) , ,The global gait ... CAGR of 13.98% during the period 2016-2020. ... movement angles, which can be used to compute ...
Breaking Biology News(10 mins):
(Date:6/23/2016)... NEWPORT BEACH, Calif. , June 23, 2016 /PRNewswire/ ... offering new biological discoveries to the medical community, has ... and co-founder Matthew Nunez . "We ... provide us with the capital we need to meet ... funding will essentially provide us the runway to complete ...
(Date:6/23/2016)... , June 23, 2016 On ... session at 4,833.32, down 0.22%; the Dow Jones Industrial Average ... 500 closed at 2,085.45, down 0.17%. Stock-Callers.com has initiated coverage ... INFI ), Nektar Therapeutics (NASDAQ: NKTR ), Aralez ... Inc. (NASDAQ: BIND ). Learn more about these ...
(Date:6/23/2016)... ... June 23, 2016 , ... Regulatory Compliance ... consulting, provides a free webinar on Performing Quality Investigations: Getting to ... 12pm CT at no charge. , Incomplete investigations are still a major concern ...
(Date:6/23/2016)...  Amgen (NASDAQ: AMGN ) today announced ... life sciences incubator to accelerate the development of new ... at QB3@953 was created to help high-potential life science ... early stage organizations - access to laboratory infrastructure. ... two "Amgen Golden Ticket" awards, providing each winner with ...
Breaking Biology Technology: