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

estion may result in broad practical applications," he said. "Knowing phylogenetic relationships of house dust mites may provide insights into allergenic properties of their immune-response-triggering proteins and the evolution of genes encoding allergens."

The project started in 2006 with a grant from the National Science Foundation. The first step was to obtain specimens of many free-living and parasitic mitesno simple task given that some mite species are associated with rare mammal or bird species around the world.

The research team relied on a network of 64 biologists in 19 countries to obtain specimens. In addition, Klimov and OConnor conducted field trips to North and South America, Europe, Asia and Africa. On one occasion, it took two years to obtain samples of an important species parasitizing African birds.

A total of around 700 mite species were collected for the study. For the genetic analysis, the same five nuclear genes were sequenced in each species.

How might the ecological shift from parasite to free-living state have occurred?

There is little doubt that early free-living dust mites were nest inhabitantsthe nests of birds and mammals are the principal habitat of all modern free-living species in the family Pyroglyphidae. Klimov and OConnor propose that a combination of several characteristics of their parasitic ancestors played an important role in allowing them to abandon permanent parasitism: tolerance of low humidity, development of powerful digestive enzymes that allowed them to feed on skin and keratinous (containing the protein keratin, which is found in human hair and fingernails) materials, and low host specificity with frequent shifts to unrelated hosts.

These features, which occur in almost all parasitic mites, were likely important precursors that enabled mite populations to thrive in host nests despite low humidity and scarce, low-quality food resources, according to Klimov and OConno
'/>"/>

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:8/29/2014)... of marine phytoplankton, such as the prolific bloomer ... (thiamine), researchers have discovered. The finding contradicts the common ... eukaryotic microbes depend on scarce supplies of thiamine in ... way to think about the ocean," says CIFAR Senior ... ISME Journal paper with CIFAR fellows John ...
(Date:8/28/2014)... Entomological Society of America (ESA) is pleased to announce ... Member of the Society. Honorary Membership acknowledges those who ... significant involvement in the affairs of the Society that ... are selected by the ESA Governing Board and then ... be honored at the Awards Ceremony at Entomology 2014, ...
(Date:8/28/2014)... FASEB MARC (Maximizing Access to Research Careers) Program has ... of Human Genetics from October 18 22, 2014 ... to promote the entry of students, post doctorates and ... basic science community and to encourage the participation of ... This year MARC conferred 16 awards totaling $29,600., ...
Breaking Biology News(10 mins):Not all phytoplankton in the ocean need to take their vitamins 2Not all phytoplankton in the ocean need to take their vitamins 3Fred Baxendale selected as Honorary Member of the Entomological Society of America 2
... evidence that Parkinson,s disease may have an infectious or ... is associated with late-onset sporadic Parkinson,s disease" appears online ... conducted by the NeuroGenetics Research Consortium, an international team ... the New York State Department of Health Wadsworth Center. ...
... State University have developed a method for predicting the ... the human body. Their work could have implications for ... of nanomaterials, as well as applications for drug delivery. ... Distinguished Professor of Pharmacology and director of the ...
... SALT LAKE CITY, July 26 Wall Street Communications ... Media, a world leader in content identification solutions, to ... a presence for the company in broadcast, government, and ... Media, based in Darmstadt, Germany, is a spinoff of ...
Cached Biology News:Researchers discover genetic link between immune system, Parkinson's disease 2Probing the nanoparticle: Predicting how nanoparticles will react in the human body 2Wall Street Communications Retained by iPharro Media 2
(Date:8/29/2014)... NY (PRWEB) August 29, 2014 Local ... Hills Veterinary Hospital are seeking candidates to participate in ... with osteoarthritis. The ultimate goal of this study ... stem cells into one or two arthritically affected joints ... joints. , Candidates for the current investigational study ...
(Date:8/29/2014)... (PRWEB) August 29, 2014 A major ... the biotech start-up dense realm of Boston-Cambridge, is gaining ... able investors. James Sherley, the Director of Boston’s Adult ... the local and national visibility of his company an ... 2013. , In addition to a social media marketing ...
(Date:8/28/2014)... Nevada City, CA (PRWEB) August 28, 2014 ... and sanitation products for the food processing industry, is ... conducting a side-by side comparison of the E2 soap ... Q E2 Sanitizing Foam Soap . Hand hygiene ... pathogens in the food processing environment. Six key criteria ...
(Date:8/28/2014)... A new research platform uses a laser ... structures undergoing stress and heating, an approach ... for microelectronics and batteries., This new technique, ... how heating and the surface stress of ... have discussed the merits of surface-stress influence ...
Breaking Biology Technology:Burnt Hills Veterinary Hospital Seeks Candidates for an Investigational Study of Stem Cells for Dogs with Arthritis 2The Adult Stem Cell Technology Center, LLC Participates in Multiple Stem Cell and Regenerative Medicine Conferences Before Year End 2The Adult Stem Cell Technology Center, LLC Participates in Multiple Stem Cell and Regenerative Medicine Conferences Before Year End 3The Adult Stem Cell Technology Center, LLC Participates in Multiple Stem Cell and Regenerative Medicine Conferences Before Year End 4Best Sanitizers, Inc. Asks Food Industry Professionals: With Fall Harvest On the Way, Is Your E2 Hand Soap Up to the Task? 2New analytical technology reveals 'nanomechanical' surface traits 2New analytical technology reveals 'nanomechanical' surface traits 3
... ... ... var shortURL = ... need to grab the first one. for (var r in data.results) { first_result = data.results[r]; break; } for (var ...
... TRIANGLE PARK, N.C., Nov. 16, 2010 Scientists ... data demonstrating that the company,s lipid-conjugated drugs, ... human Organic Anion Transporters (hOATs) and thus have ... mechanism.  These data, presented at the International Pharmaceutical ...
... American presence ... ... ... Results are keyed by longUrl, so we need to grab the first one. for (var r in data.results) { ...
Cached Biology Technology:Intel Corporation acquires Toronto start-up CognoVision 2Intel Corporation acquires Toronto start-up CognoVision 3Intel Corporation acquires Toronto start-up CognoVision 4Intel Corporation acquires Toronto start-up CognoVision 5Intel Corporation acquires Toronto start-up CognoVision 6Intel Corporation acquires Toronto start-up CognoVision 7Chimerix's PIM Conjugate Technology Reduces Risk of Nephrotoxicity for CMX001 and CMX157 2Chimerix's PIM Conjugate Technology Reduces Risk of Nephrotoxicity for CMX001 and CMX157 3Chimerix's PIM Conjugate Technology Reduces Risk of Nephrotoxicity for CMX001 and CMX157 4Enerkem adds two new executive roles to growing North American presence 2Enerkem adds two new executive roles to growing North American presence 3Enerkem adds two new executive roles to growing North American presence 4Enerkem adds two new executive roles to growing North American presence 5Enerkem adds two new executive roles to growing North American presence 6Enerkem adds two new executive roles to growing North American presence 7
... Description: ,Kit containing Dermal Fibroblasts (Mouse/BalbC) ... as a long-term culture, and is guaranteed ... continuous growth from the date supplied, when ... Dermis, mouse/BalbC, embryonic day 18.5 ,Applications: ...
...
... Immunogen: Synthetic Peptide: M(1) E F ... G P P T M D L E(19) ... mouse cells.,PA1-072 has been successfully used in Western ... detects an ~86 kDa protein representing Mint3 from ...
... (AR) Competitor Assay Kits provide a sensitive ... potential AR ligands using fluorescence polarization (FP). ... domain protein tagged with His and GST ... androgen ligand (Fluormone AL Green in the ...
Biology Products: