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:
*Name:
*Comment:
*Email:


(Date:3/22/2017)... Calif. , March 21, 2017 ... analytics company serving law enforcement agencies, announced today the ... as director of public safety business development. ... diversified law enforcement experience, including a focus on the ... In his most recent position, Mr. Sheridan served as ...
(Date:3/9/2017)... , Australia , March 9, 2017 ... data at the prestigious World Lung Imaging Workshop at ... Andreas Fouras , was invited to deliver the latest ... medicine. This globally recognised event brings together leaders at ... the latest developments in lung imaging. ...
(Date:3/2/2017)... , March 2, 2017 Summary This ... Perrigo and its partnering interests and activities since 2010. ... Read the ... and Alliance since 2010 report provides an in-depth insight into ... sciences companies. On demand company reports are prepared ...
Breaking Biology News(10 mins):
(Date:3/22/2017)... ALBANY, New York , March 22, 2017 /PRNewswire/ ... market is largely fragmented, states a research report by ... Sanofi S.A., Pfizer Inc., Amgen Inc., and AbbVie Inc., ... market in 2015. The prominent players in this market ... to expand their product portfolio, which is likely to ...
(Date:3/22/2017)... March 22, 2017   VWR ... of product and service solutions to laboratory ... has acquired EPL Archives, Inc., an international ... the entire regulated product research, development and ... storage and ancillary services. EPL Archives is ...
(Date:3/22/2017)... ... March 21, 2017 , ... Benchworks CEO ... Executive Officer Forum on March 23-24 in San Diego. The event is a ... diagnostic industries. , Benchworks Vice President Christian Meyer will also participate in the ...
(Date:3/22/2017)... ... March 21, 2017 , ... Functional near-infrared spectroscopy (fNIRS), an optical ... as a way to track the brain’s response to acute pain in adults and ... pressor test ,” published today in the journal Neurophotonics , by SPIE, ...
Breaking Biology Technology:
Cached News: