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:1/6/2017)... , Jan. 5, 2017  Delta ID Inc., a ... scanning technology for automotive at CES® 2017. Delta ID ... ) to demonstrate the use of iris scanning as ... authenticate the driver in a car, and as a ... driving experience. Delta ID and Gentex will ...
(Date:12/22/2016)... SuperCom (NASDAQ:   SPCB ... Safety, HealthCare, and Finance sectors announced today that Leaders in Community ... and deploy a community-based supportive services program to reduce recidivism in ... expanding its presence in the state. ... This new program, which is expected to commence ...
(Date:12/16/2016)... , Dec 16, 2016 Research and Markets ... Market - Global Forecast to 2021" report to their offering. ... The biometric ... grow at a CAGR of 14.06% from 2016 to 2021. The ... is projected to reach 854.8 Million by 2021. The growth of ...
Breaking Biology News(10 mins):
(Date:1/13/2017)... ... January 13, 2017 , ... ... demand that it has found among its diverse customer base. The latest entry ... in most brands electroporators including BTX and Bio-Rad. FireflySci is introducing three distinct ...
(Date:1/12/2017)... ... January 12, 2017 , ... ... of performing routine electrochemical biosensing has increased dramatically. Primarily driven by the ... and quantification of various analytes in complex samples. , Screen-printed ...
(Date:1/12/2017)... 2017   Protein Sciences Corporation , a ... Flublok Influenza Vaccine ®, announced today that its ... safety results and induced strong neutralizing antibodies against ... is expected to advance into human clinical trials ... Institute of Technology in Immunobiologicals of the Oswaldo ...
(Date:1/11/2017)... ... January 11, 2017 , ... Phase 1 clinical trial ... of the investigational anti-cancer agent tucatinib (formerly ONT-380) against HER2+ breast cancer. The ... percent of these heavily pretreated patients saw clinical benefit from the drug, with ...
Breaking Biology Technology: