Navigation Links
Patterns of antibiotic-resistant bacteria found in Galapagos reptiles
Date:1/23/2012

CHAMPAIGN, Ill. Land and marine iguanas and giant tortoises living close to human settlements or tourist sites in the Galpagos islands are more likely to harbor antibiotic-resistant bacteria than those living in more remote or protected sites on the islands, researchers report in a new study.

Feces collected at several different sites from free-living reptiles harbored Escherichia coli bacteria that were resistant to ampicillin, doxycycline, tetracycline, and trimethoprin/sulfamethoxazole. Another bacterial species collected from the feces, Salmonella enterica, was found to be only mildly resistant or not resistant at all to the same antibiotics, most likely because of the differing ecology of these two bacterial species in the gut, researchers said.

The study results are reported in the Journal of Wildlife Diseases.

This is not the first study to find that wild animals living near humans or affected by tourism can obtain antibiotic-resistant bacteria from that exposure, said University of Illinois animal sciences professor Roderick Mackie, who led the study. But it does offer researchers and wildlife managers a way to determine which vulnerable animal species are most at risk of exposure to human pathogens.

"Oceanic island systems such as the Galpagos archipelago are ideal for studying patterns and processes of ecology and evolution, such as antibiotic resistance," Mackie said. "Although the data are interesting, we don't have enough data to identify the likely source of antibiotic exposure and origin of the resistance genes, or to draw conclusions about transmission direction."

Also, it is not yet clear "to what extent this potential exposure translates to ongoing exchange of bacterial strains or bacterial traits," the researchers wrote. Further studies are needed "to understand better how human associations influence disease risk in endemic Galpagos wildlife."

The work was carried out by Emily Wheeler as part of her doctoral studies in Mackie's lab, and was supported by a U.S. Environmental Protection Agency STAR Fellowship and a student research grant from the Conservation Medicine Center of Chicago. Postdoctoral researcher Pei-Ying Hong and field biologist Lenin Cruz Bedon, of Isla Santa Cruz, Galpagos, are co-authors on the study.

Mackie also is an affiliate of the Institute for Genomic Biology at Illinois.


'/>"/>

Contact: Diana Yates
diya@illinois.edu
217-333-5802
University of Illinois at Urbana-Champaign
Source:Eurekalert  

Related biology news :

1. Tool enables scientists to uncover patterns in vast data sets
2. Researchers link patterns seen in spider silk, melodies
3. Researcher finds key to ancient weather patterns in Floridas caves
4. Controlled disorder -- scientists find way to form random molecular patterns
5. Predators drive the evolution of poison dart frogs skin patterns
6. Contrasting patterns of malaria drug resistance found between humans and mosquitoes
7. Patterns of new DNA letter in brain suggest distinct function
8. West Nile virus transmission linked with land-use patterns and super-spreaders
9. Flight patterns reveal how mosquitoes find hosts to transmit deadly diseases
10. Scientists probe Indian Ocean for clues to worldwide weather patterns
11. Decade-long study reveals recurring patterns of viruses in the open ocean
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Patterns of antibiotic-resistant bacteria found in Galapagos reptiles
(Date:12/12/2016)... , Dec. 12, 2016  Researchers at ... possibilities for graphene by combining the material with ... highly sensitive pressure detector able to sense pulse, ... a small spider.  The research ... can be read here:  http://science.sciencemag.org/content/354/6317/1257 ...
(Date:12/7/2016)... 7, 2016 According to a new market research report ... (Facial Expression, Voice Recognition), Service, Application Area, End User, And Region - Global ... from USD 6.72 Billion in 2016 to USD 36.07 Billion by 2021, at ... Continue Reading ... MarketsandMarkets Logo ...
(Date:12/7/2016)...   Veridium , a leader in biometrics-based ... CEO James Stickland . Stickland, a seasoned ... has served in senior executive roles for HSBC, ... expanding a pipeline of venture capital and accelerating ... served as managing director of U.K.-based fintech firm ...
Breaking Biology News(10 mins):
(Date:1/12/2017)... ... January 12, 2017 , ... ... short response times capable of performing routine electrochemical biosensing has increased dramatically. ... provide fast, sensitive detection and quantification of various analytes in complex samples. ...
(Date:1/12/2017)... Conn. , Jan. 12, 2017   ... company and maker of Flublok Influenza Vaccine ... Zika vaccine candidate had good safety results and ... in preclinical studies. The product is expected to ... few months.  In addition, the Institute of Technology ...
(Date:1/11/2017)... Colo. (PRWEB) , ... January 11, 2017 , ... ... the journal Clinical Cancer Research show early promise of the investigational anti-cancer agent ... despite a median 5 previous treatment regimens. Twenty-seven percent of these heavily pretreated ...
(Date:1/11/2017)...  Brian Mehling, M.D., world-renowned stem cell researcher, board-certified ... (BHI), will be attending the 47th Annual World Economic ... January 17-20, 2017. This will be Dr. Mehling,s fifth ... of this year,s forum is Responsive and Responsible Leadership; ... strategies for fostering greater social inclusion and human development. ...
Breaking Biology Technology: