U.S. flagAn official website of the United States government
                    Here's how you know **Official websites use .gov**
                            
                            A **.gov** website belongs to an official government organization in the United States.
 **Secure .gov websites use HTTPS**
                            
                            A **lock** (                            
                              A locked padlock                                                      
                            
                            ) or **https://** means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.


Menu Agricultural Research Service
						
                    U.S. DEPARTMENT OF AGRICULTURE
 close



Research
                Research Home
                            National Programs
                            Research Projects
                            Scientific Manuscripts
                            International Engagement
                            Scientific Software/Models
                            Databases and Datasets
                            Office of Scientific Quality Review
            Media
                News & Features
                            Multimedia
                            Briefing Room
                            Down on the Farm
                            Press Room
                            Science in Your Shopping Cart
                            Scientific Discoveries
                            Tellus
                            Under the Microscope
            About ARS
                About ARS Home
                            Staff Directory
                            Labs and Research Centers (Map)
                            Headquarter Offices
                            Organizational Chart
                            Employee Services (REE Employees Only)
                            Office of Outreach, Diversity, and Equal Opportunity
            Work With Us
                Work With Us Home
                            ARS Vacancies at USAJOBS
                            Careers at ARS Information
                            Scientific Collaborations
                            Extramural Agreements
                            1890 Faculty Research Sabbatical ProgramSearch small
                    Search
            
            ARS Home
                                About ARS
                                Contact Us




ARS Home Research Publications at this Location





- ARS National Programs
- Search for a scientific manuscript
- Search for a research project
- ARS Software
- Programs and Projects
- Collaborations
- Subjects of Investigation
- Publications

Title:   Author  item
                                            Meikle, Williamitem
                                            MERCADIER, GUY - USDA-ARS-EBCLitem
                                            KIRK, ALAN - USDA-ARS-EBCLitem
                                            DEROUANÉ, FRANCK - USDA-ARS-EBCLitem
                                            ROSENGAUS, REBECCA - NORTHEASTERN UNI, BOSTONitem
                                            HE, YURONG - SOUTH CHINA AG UNI
  Submitted to: Society for Invertebrate Pathology Annual Meeting
                                    Publication Type: Other
                                    Publication Acceptance Date: 6/1/2004
                                    Publication  Date: 8/1/2004
                                    Citation: Meikle, W.G., Mercadier, G., Kirk, A., Derouané, F., Rosengaus, R.B., He, Y. 2004. Laboratory bioassays of paecilomyces fumosoroseus on coptotermes formosanus:  the effects of termite separation and spore concentrations on termite survival. Society for Invertebrate Pathology Annual Meeting.Interpretive Summary:
                                Technical Abstract: As part of a larger USDA-ARS project on the management of Formosan subterranean termites, Coptotermes formosanus, exploration for natural enemies of termites, either parasitoids or pathogens, was conducted in six countries by a team from the European Biological Control Laboratory.  A total of 99 isolates were obtained, including an isolate of Paecilomyces fumosoroseus from C. formosanus collected in southern China, that was selected for further study. Using C. formosanus shipped from China, experiments were conducted to 1) quantify the density of spores recovered from a termite after treatment in a Potter tower using aqueous suspensions of different P. fumosoroseus conidial concentrations; and 2) compare the treatment of termites with the P. fumosoroseus isolate to a commercial American fungal strain of Metarhizium anisopliae (BioBlast®).  With respect to experiment 1), analysis showed that termites treated at 5x106 spores per ml had, received on average between 73 and 116 spores each, while at 5x107 spores per ml the termites received on average between 600 and 733 spores each. With respect to experiment 2), the fungi were compared with respect to their effects on the median survivorship of C. formosanus in petri dishes kept either alone or with other treated termites. Among termites in the control treatments (treated with a blank suspension), termites kept alone had significantly lower survivorship than those kept in groups.  In pairwise comparisons of the two fungi at different concentrations, it was found that treatment with the M. anisopliae strain caused significantly lower survivorship among termites kept alone than did the P. fumosoroseus at both 5x105 and 5x106 spores per ml, but the P. fumosoroseus isolate caused significantly lower survivorship among grouped termites, at the same spore concentrations, than did M. anisopliae. These results suggest that there may be desirable characteristics present in pathogens obtained directly from target pests, such as termites, that recommend them as candidate agents for biopesticides.


Return to top


Connect with ARS Sign up


ARS Home
                            USDA.gov
                            Plain Writing
                            Policies & Links
                            Civil Rights Statements
                            FOIA
                            Accessibility Statement
                            Privacy Policy
                            Non-Discrimination Statement
                            Quality of Information
                            USA.gov
                            WhiteHouse.gov