Navigation Links
Genetic study of house dust mites demonstrates reversible evolution
Date:3/8/2013

ANN ARBORIn evolutionary biology, there is a deeply rooted supposition that you can't go home again: Once an organism has evolved specialized traits, it can't return to the lifestyle of its ancestors.

There's even a name for this pervasive idea. Dollo's law states that evolution is unidirectional and irreversible. But this "law" is not universally accepted and is the topic of heated debate among biologists.

Now a research team led by two University of Michigan biologists has used a large-scale genetic study of the lowly house dust mite to uncover an example of reversible evolution that appears to violate Dollo's law.

The study shows that tiny free-living house dust mites, which thrive in the mattresses, sofas and carpets of even the cleanest homes, evolved from parasites, which in turn evolved from free-living organisms millions of years ago.

"All our analyses conclusively demonstrated that house dust mites have abandoned a parasitic lifestyle, secondarily becoming free-living, and then speciated in several habitats, including human habitations," according to Pavel Klimov and Barry OConnor of the U-M Department of Ecology and Evolutionary Biology.

Their paper, "Is permanent parasitism reversible?Critical evidence from early evolution of house dust mites," is scheduled to be published online March 8 in the journal Systematic Biology.

Mites are arachnids related to spiders (both have eight legs) and are among the most diverse animals on Earth. House dust mites, members of the family Pyroglyphidae, are the most common cause of allergic symptoms in humans, affecting up to 1.2 billion people worldwide.

Despite their huge impact on human health, the evolutionary relationships between these speck-sized creatures are poorly understood. According to Klimov and OConnor, there are 62 different published hypotheses arguing about whether today's free-living dust mites originated from a free-living ancesto
'/>"/>

Contact: Jim Erickson
ericksn@umich.edu
734-647-1842
University of Michigan
Source:Eurekalert

Page: 1 2 3 4

Related biology news :

1. Genetics Society of Americas Genetics journal highlights for March 2013
2. U of M researchers utilize genetically corrected stem cells to spark muscle regeneration
3. Genetic risk factors for common eye disorder come into focus
4. U of M researchers identify genetic variation behind acute myeloid leukemia treatment success
5. Geneticist Svante Pääbo receives the $500,000 Gruber Genetics Prize
6. Genetic signs of alcoholism in women studied for the first time
7. Researchers in Manchester find genetic key to preventing spine tumors
8. When It Comes To Genetic Code, Researchers Prove Optimum Isnt Always Best
9. Life experiences put their stamp on the next generation: New insights from epigenetics
10. Cleveland Clinic develops clinical screening program for no.1 genetic cause of colon cancer
11. Epigenetics shapes fate of brain vs. brawn castes in carpenter ants
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:9/18/2014)... cycles of carbon and nitrogen comprise all spheres ... environmental systems have caused imbalances and perturbations that ... (GHGs). Increased GHGs result in climate changes which ... oceans and the atmosphere. Understanding these feedback mechanisms ... of environmental science during the past three decades. ...
(Date:9/18/2014)... up to 400 kilometres in search of a home, which ... Clownfish spend their entire adult lives under the protection of ... open ocean, says study co-author, Dr Hugo Harrison from the ... at James Cook University. , "In the past we haven,t ... rare glimpse into how far they can swim, crossing large ...
(Date:9/17/2014)... engineering professor and his doctoral student have designed a ... water collected from fog and dew., The device could ... deserts around the globe., Cheng Luo, professor in the ... candidate in the same College of Engineering department, published ... of ACS, (American Chemical Society) Applied Materials ...
Breaking Biology News(10 mins):Greenhouse gas research enters a new era 2Nemo's epic journey to find a new home 2Shorebird's beak inspires UT Arlington research on water collection 2
... The majority of rare diseases are hereditary. But despite ... exact cause remains unclear. The discovery of the underlying ... diagnosis and the development of innovative approaches to their ... Genetics and the Institute of Medical Genetics at the ...
... The incidence of psychotic disorders varies greatly ... course, and treatment response across individuals. High rates ... cannabis users, and traumatised individuals reflect the causal ... progress in the area of molecular genetics, has ...
... the environment specifically to creatures that live in water ... Carolina State University toxicologists. In a study published in ... NC State researchers show that water fleas take up nitrates ... fertilizers and convert those chemicals into nitric oxide. Nitric ...
Cached Biology News:All genes in 1 go 2Developmental gene-environment interactions: A model for psychosis 2Developmental gene-environment interactions: A model for psychosis 3Developmental gene-environment interactions: A model for psychosis 4Developmental gene-environment interactions: A model for psychosis 5Developmental gene-environment interactions: A model for psychosis 6Fertilizer chemicals linked to animal developmental woes 2
(Date:9/18/2014)... , Sept. 18, 2014  Health Enhancement Products, Inc. (OTCQB: ... early-stage algae bioactive compounds and metabolic processes, is pleased to ... board of directors. Ms. Nola E. Masterson , a ... joined the board effective September 17, 2014. ... to join our board," states Andrew Dahl , President ...
(Date:9/18/2014)... 2014 Research and Markets ... N-acetylcysteine Industry Report 2014" report to their ... Report 2014 is a professional and in-depth study ... industry. The report provides a basic ... and industry chain structure. The N-acetylcysteine market analysis ...
(Date:9/18/2014)... -- MEI Pharma, Inc. (Nasdaq: MEIP ), an oncology ... cancer, announced today that Daniel P. Gold , Ph.D., ... NewsMakers in the Biotech Industry conference on Friday, September ... Broadway Hotel & Conference Center in New York ... accessed at www.meipharma.com . A replay will be available ...
(Date:9/18/2014)... OMICS Group International invites researchers, authors and academicians ... Access Week’ by actively contributing their research outcome ... from 20-26th October, 2014. , Pharmaceutical Sciences ... with a tremendous speed to provide improved medical ... is gearing with innovation and technological revolution to ...
Breaking Biology Technology:Health Enhancement Announces New Board Member In Advance Of Annual Shareholder Meeting 2Global N-acetylcysteine Industry Report 2014 2MEI Pharma To Present At BioCentury's NewsMakers Conference 2MEI Pharma To Present At BioCentury's NewsMakers Conference 3Pharma and Omics Journals to Address Global Challenges during Open Access Week 2Pharma and Omics Journals to Address Global Challenges during Open Access Week 3
... Tips for Better Blood ... Sugar Management, BRIDGEWATER, N.J., ... with diabetes, Emmy nominated actress and,Broadway star Aida Turturro is teaming up ... diabetes to reach,better levels of blood sugar control. Ms. Turturro,s personal story ...
... security guards, police officers and armed forces into Robocops, repelling ... in carbon nanotechnology however could give those in the line ... of damage. , A research paper published in ... Centre for Advanced Materials Technology at the University of Sydney ...
... Dragon Pharmaceutical Inc.,(TSX: DDD; OTCBB: DRUG; BBSE: ... 7ACA production has been successfully implemented on ... validates the Company,s research,and development efforts to ... immediate benefits to production operations by,increasing production ...
Cached Biology Technology:Actress Aida Turturro Tells Americans to Start Now to Talk With Their Healthcare Provider About Taking Control of Their Diabetes 2Actress Aida Turturro Tells Americans to Start Now to Talk With Their Healthcare Provider About Taking Control of Their Diabetes 3Actress Aida Turturro Tells Americans to Start Now to Talk With Their Healthcare Provider About Taking Control of Their Diabetes 4Using nanotech to make Robocops 2Dragon Announces R&D Achievement in Biotech Manufacturing Process 2Dragon Announces R&D Achievement in Biotech Manufacturing Process 3
Collected from sexually mature, mixed sex, mixed breed dogs. Serum from specific breeds available by request....
... EPS 301 Power Supply, 1. ... maximum.Constant voltage or constant current modes.Single-unit ... precision and reproducibility.Suitable for submarine, mini ... as well as semidry and mini ...
Mouse Serpin F1/PEDF MAb (Clone 199315)...
Mouse MMP-24 (MT5-MMP) MAb (Clone 143908)...
Biology Products: