HOME >> BIOLOGY >> NEWS
This party doesn't start until the hosts arrive

Disease causing organisms can be present in some areas where their hosts are not. If their hosts arrive, novel disease outbreaks may result. In the first comprehensive genetic analysis of an invasive marine host and its parasites, researchers trace invasion pathways of snails and trematodes from Japan to North America.

Their results, published in the Proceedings of the National Academy of Sciences, have broad implications for identifying and mitigating spreading disease in a global economy. Simultaneously understanding the invasion pathways of disease-causing organisms and their hosts will be key in limiting future disease outbreaksin humans, agriculture and wildlife.

Invasive populations of Asian mud snails, Batillaria attramentaria, probably arrived in North America with Pacific oysters, Crassostrea gigas, imported from northern Japan in the early 1900's. Genetic research by Osamu Miura, Tohoku University, and colleagues from the Smithsonian Institution and UC Santa Barbara confirmed this. "We saw a lot of genetic variation among snail populations in Japan but the North American snails are genetically most similar to those from northern Japan, the source of the imported oysters," Miura reports.

Of the eight species of trematode parasites that plague the snails in Japan, only the most common, Cercaria batillariae, has arrived in America. Luckily for the researchers, gene sequencing showed that this single species actually consisted of several genetically distinct cryptic species in its home range in Japan. In North America, they commonly found two of the cryptic species. One parasite shows much less genetic diversity in America than in Japan, whereas the other parasite is equally diverse in both regions.

"Genetic evidence suggests that while one cryptic parasite species experienced a bottleneck and probably came with the snails, the other was probably historically dispersed by migratory birds and could only establish i
'"/>

Contact: Mark Torchin
torchinm@si.edu
202-786-2094 ext. 8713
Smithsonian Tropical Research Institute
18-Dec-2006


Page: 1 2

Related biology news :

1. Train your brain to hear your friends at a party
2. Heart intervention doesnt outweigh medicine in study
3. Failed experiment yields a biocontrol agent that doesnt trigger antibiotic resistance
4. High BMI doesnt always spell obesity, Jackson Laboratory researchers show
5. Acetaminophen safe to use after heart attack but doesnt protect the heart
6. In stretching, pain doesnt equal gain; but if NO isnt producing, stretching wont help
7. Study finds evolution doesnt always favor bigger animals
8. If oxytocin eating role doesnt mature at birth, what other situations affect its impact?
9. Size doesnt matter
10. To sea or not to sea: When it comes to salmon sex, size sometimes doesnt matter
11. What the eye doesnt see

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


(Date:9/3/2020)... NEW YORK (PRWEB) , ... September 03, 2020 ... ... for real world data, today announced that an extensive third-party assessment of the ... secure and compliant when measured against federal security regulations. The comprehensive evaluation reviewed ...
(Date:8/23/2020)... ... August 21, 2020 , ... ... has been published and is now available on the company’s global website. ... the X-ray analysis community, presenting current news and crystallographic research. , The ...
(Date:8/12/2020)... SOUTHFIELD, Mich. (PRWEB) , ... August 11, 2020 ... ... Janssen R&D subsidiary based in Princeton, NJ, have entered into license agreements with ... discovery and development. Both Roche and J&J have annual Research and Development ...
Breaking Biology News(10 mins):
(Date:8/15/2020)... (PRWEB) , ... August 13, 2020 , ... True ... the creation of its Scientific Advisory Board (SAB) to research the medical potential of ... can be enhanced when combined with terpenes. The board is focused on expanding the ...
(Date:8/12/2020)... ... August 11, 2020 , ... The FSHD Society announced today ... Clinical Trial Research Network (FSHD CTRN), with consideration of follow-on funding ... of academic research centers in the United States and Europe with expertise in ...
(Date:8/12/2020)... ... August 12, 2020 , ... ... (EMMA International), a global leader in FDA compliance consulting has been named on ... private companies. The list represents a unique look at the most successful companies ...
(Date:8/3/2020)... ... August 03, 2020 , ... ERT, the global ... has been named one of the 100 most inspiring individuals in the life-sciences ... are selected based on how they have inspired their colleagues and affected positive ...
Breaking Biology Technology:
Cached News: