HOME >> BIOLOGY >> NEWS
Male susceptibility to disease may play role in evolution of insect societies

A pair of scientists has proposed a new model for behavioral development among social insects, suggesting that a higher male susceptibility to disease has helped shape the evolution of the insects' behavior.

What might be called the "sick-male" theory has been proposed by animal behaviorists Sean O'Donnell of the University of Washington and Samuel Beshers of the University of Illinois at Urbana-Champaign, and appears in the current issue of Proceedings Biological Sciences, published by the Royal Society of London.

Among behaviors possibly affected are the division of labor between males and females and the relative social isolation experienced by males in many social insect colonies.

The researchers looked at Hymenoptera, an order of insects, including bees, ants and wasps, some of which have highly complicated societies and an unusual genetic makeup. These insects are called haplodiploids because males and females have a different number of sets of chromosomes. The females, like most animals, including humans, are diploid and have two sets of chromosomes, one from each parent. Hymenopteran males, however, hatch from unfertilized eggs and are haploids with just one set of chromosomes.

"Disease and infections are a very powerful and ongoing force in natural selection, and natural selection should favor individuals that possess forms of genes, or alleles, that make them more resistant to infection," said O'Donnell, a UW associate professor of psychology. "In some cases, an individual that has more than one form of a gene can ward off more parasites. In humans, for example, there are different forms of a blood gene that can help ward off malaria parasites. People with two different alleles for this gene are more resistant to malaria."

Because they are haploid, Hymenopteran males can't have alternate forms of any genes, or in other words, individual males have no genetic variability. This, O'Donnell and Beshers contend, puts males at
'"/>

Contact: Joel Schwarz
joels@u.washington.edu
206-543-2580
University of Washington
24-May-2004


Page: 1 2 3

Related biology news :

1. Gene clusters predict atherosclerosis severity, susceptibility
2. Study helps explain island populations susceptibility to exotic diseases
3. Protein may reduce susceptibility to autoimmune disease
4. Gene variants may increase susceptibility to type 2 diabetes
5. Gene differences may alter susceptibility to multiple sclerosis
6. Breast cancer susceptibility genes play role in DNA repair
7. Three genes linked to psoriasis susceptibility identified on chromosome 17
8. OHSU scientists uncover key protein for Fanconi anemia, cancer susceptibility
9. Gene that controls susceptibility to tuberculosis discovered
10. TSRI scientists show that rare genetic mutations increase susceptibility to sepsis
11. Alcohol abuse may increase susceptibility to HIV infection

Post Your Comments:
(Date:11/4/2014)... death at the right time might actually help boost ... could help in understanding animal populations, pest control and ... in the journal Trends in Ecology and Evolution ... that the kind of positive population effect an overall ... depends on the size and developmental stage of the ...
(Date:11/4/2014)...   3D scanner developer targets ... Fuel3D , a developer of 3D scanning solutions, today announced ... (£4 million). This funding builds on the company,s initial $2.6 ... the way for the commercial launch of the company,s consumer ... led by Chimera Partners and will be used to ramp-up ...
(Date:11/3/2014)... A University of Colorado Cancer Center study ... Academy of Sciences describes the activity of a ... Interleukin 37 or IL-37. It has been known to ... in the adaptive immune system: IL-37 inhibits the ability ... antigens. , "Knowing this mechanism that underlies IL-37,s effect ...
Breaking Biology News(10 mins):When less is more: Death in moderation boosts population density in nature 2Fuel3D Secures $6.4 Million in Expansion Funding 2Fuel3D Secures $6.4 Million in Expansion Funding 3PNAS: From HIV to cancer, IL-37 regulates immune system 2
(Date:11/18/2014)... Sarasota, FL (PRWEB) November 17, 2014 ... novel point-of-care diagnostic tests – today announces its ... Control and Prevention’s (CDC) Get Smart About Antibiotics ... Antibiotics Week is a national campaign designed to ... local health departments, and non-profit and for-profit partners ...
(Date:11/18/2014)... (PRWEB) November 18, 2014 American ... Australia) recently formed a partnership with researchers at ... University of Technology, and the USDA’s Forest Products ... reinforced with nanocellulose. Nanocellulose is a rapidly emerging ... of the project is to replace heavy steel ...
(Date:11/18/2014)... MENLO PARK, Calif. , Nov. 18, 2014 ... leading biotechnology company in the emerging field of ... clinical program, AST-OPC1 (oligodendrocyte progenitor cells) for complete ... as one of ten "Top Advanced Therapies Projects ... "We are delighted to receive this significant industry ...
(Date:11/16/2014)... 17, 2014 The “Fluid Management ... fluid visualization systems market with an analysis and ... & irrigation, dialyzes, fluid warming and waste management. ... the fluid visualization systems by applications and regions ... market was valued at $19,285.5 million in 2013 ...
Breaking Biology Technology:RPS Again Partners with the CDC in Support of the 2014 Get Smart About Antibiotics Week 2RPS Again Partners with the CDC in Support of the 2014 Get Smart About Antibiotics Week 3American Process Inc. Announces Partnership to Develop Ultra-Strong, Lightweight Automotive Components Using Nanotechnology from Nature 2American Process Inc. Announces Partnership to Develop Ultra-Strong, Lightweight Automotive Components Using Nanotechnology from Nature 3Asterias Biotherapeutics Named as a "Top Advanced Therapies Projects to Watch" and Will Present at the Therapeutic Area Partnerships Conference 2Asterias Biotherapeutics Named as a "Top Advanced Therapies Projects to Watch" and Will Present at the Therapeutic Area Partnerships Conference 3Fluid Visualization Systems Market poised to reach $25,908.4 Million by 2018 - New Research Report by MarketsandMarkets 2Fluid Visualization Systems Market poised to reach $25,908.4 Million by 2018 - New Research Report by MarketsandMarkets 3Fluid Visualization Systems Market poised to reach $25,908.4 Million by 2018 - New Research Report by MarketsandMarkets 4
Cached News: