HOME >> BIOLOGY >> NEWS
How lice and bird feathers stick together

people worldwide in a 2003 outbreak, is caused by a coronavirus that is believed to have jumped to humans from civets, which are nocturnal, cat-shaped creatures. The West Nile virus is spread from birds and mosquitoes to humans.

While the new study is not immediately relevant to SARS and West Nile, "if we know why parasites use some hosts and not other hosts, then we can begin to predict what hosts may get hit in the future by a given parasite," Clayton says.

Genealogy for lice and birds

In one part of the study, the researchers analyzed genetic material from 19 species of lice and 24 species of pigeons and doves. That allowed them to construct evolutionary family trees for the lice and the birds, showing how each species was related to or descended from other species during the last 30 million years.

Those evolutionary trees revealed that louse species evolved in concert with various species of pigeons and doves they infest. As a result, "big birds have big lice, small birds have small lice," says Bush.

"We have shown that something as simple as the changing size of a parasite's environment the bird feather can cause new species of lice to form," Clayton says.

"Our research suggests that humans don't pick up lice from chimps and baboons because those lice evolved to hang onto to coarser hair. On an even broader level, the study suggests size matters in terms of what parasites infest a host. Size is one of the most fundamental properties of all living organisms. Something as simple as size even may be dictating what cells can be invaded by parasites like those that cause malaria."

Experiments to learn why bird size matters to lice

After making measurements to confirm bigger birds have bigger feathers and smaller birds have smaller feathers, the researchers conducted three sets of experiments to learn why big lice could only survive on birds with big feathers.

Five
'"/>


8-Dec-2003


Page: 1 2 3 4 5

Related biology news :

1. Isotopes from feathers reveal bird migration
2. Bronx Zoo feathers help save rare birds half a world away
3. First dinosaur found with its body covering intact; displays primitive feathers from head to toe
4. Ancient fossil shows earliest feathers, may end argument about birds origin
5. Scientists discover new intricacies in how ulcer bugs stick to stomach
6. Fish, FRAMES and sticky chemicals net technology award for Pacific Northwest National Laboratory
7. Study shows prions stick around in certain soils
8. Atomic force microscope used to measure how well live bacteria stick
9. A switch that makes a blood clot sticky found within the platelet membrane
10. A closer look yields new clues to why bacteria stick to things
11. Walking sticks lost wings, then re-evolved them

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:8/14/2019)... ... ... Dr. Julie Reck of Veterinary Medical Center of Fort Mill has recently begun ... patient, her own geriatric Australian Shepherd, Simon, was treated in June 2019 for osteoarthritis in ... his body was weak, and he struggled to play fetch and other games with his ...
(Date:8/6/2019)... ... August 05, 2019 , ... Keck Graduate Institute (KGI) President Sheldon Schuster has ... Sciences (SPHS). , “Dean Zdanowicz is highly regarded as an innovative leader who prioritizes ... is a great choice to build on the success of the KGI School of ...
(Date:8/4/2019)... PRINCETON, N.J. (PRWEB) , ... August 02, 2019 ... ... expertise to assist the life science industry in advancing the development of medical ... has been recognized by PharmaVOICE magazine as one of the “100 Most Inspiring ...
Breaking Biology News(10 mins):
(Date:7/30/2019)... ... July 30, 2019 , ... The summer ... cooking events company. Not only has the company already hosted many of its ... Cooking Parties to its guests. , With Lajollacooks4u’s Private Cooking Parties, guests prepare ...
(Date:7/23/2019)... ... July 22, 2019 , ... While today ... in the fields of 3D tissue imaging , digital pathology , ... started back in 2013 as a products company. These products are focused on ...
(Date:7/19/2019)... ... July 18, 2019 , ... ... Everest,” will be joining forces with California-based charity Coalition Duchenne for its 9th ... Coalition Duchenne raises awareness and funding for Duchenne muscular dystrophy and was founded ...
(Date:7/17/2019)... , ... July 16, 2019 ... ... long-term strategic agreement for the development and manufacturing of Zolgensma® (onasemnogene abeparvovec-xioi), ... this collaboration, AveXis, a Novartis company, will have dedicated manufacturing space at ...
Breaking Biology Technology:
Cached News: