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
 Animal Parasitic Diseases Laboratory: Beltsville, MD
 close



    Research

                    Research Projects
                                    Publications
                                    Collaborations
                                    News
                People

                    Staff Listing
                                    Careers


        


                    Resources
                        Our ScientistsSearch small
                    Search
            
            ARS Home
                                About ARS
                                Contact Us




ARS Home Northeast Area Beltsville, Maryland (BARC) Beltsville Agricultural Research Center Animal Parasitic Diseases Laboratory 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
                                            CALER-BERNAL, RAFAEL - Non ARS Employeeitem
                                            VAN WILPE, EMA - University Of Pretoriaitem
                                            WHITE, KEVIN - Alaska Department Of Fish And Gameitem
                                            VERMA, SHIV - Non ARS Employeeitem
                                            CERQUEIRA-CEZAR, CAMILA - Non ARS Employeeitem
                                            Dubey, Jitender
  Submitted to: Parasitology Research
                                    Publication Type: Peer Reviewed Journal
                                    Publication Acceptance Date: 3/25/2015
                                    Publication  Date: 10/29/2015
                                    Citation: Caler-Bernal, R., Van Wilpe, E., White, K., Verma, S., Cerqueira-Cezar, C., Dubey, J.P. 2015. Sarcocystis oreamni n. sp. from the mountain goat (oreamnos americanus). Parasitology Research. 114:4135-4141.Interpretive Summary: Coccidian parasites in the phylum Apicomplexa include myriad parasites that are transmitted when a definitive host consumes the infected tissue of an intermediate host, or when an intermediate host consumes water or food contaminated with the feces of a definitive host. Toxoplasma gondii is an important zoonotic parasite that compromises food safety by infecting tissues of food animals and by contaminating produce. This parasite is difficult to distinguish from many similar parasites that cause no known risk to human health. Among these are parasites in the genus Sarcocystis known to cause encephalitis in a variety of mammalian and avian hosts. Here we describe 2 species of Sarcocystis in mountain goat, to remove the existing confusion in literature. When species names are applied to organisms lacking meticulously described attributes and lacking voucher reference materials, imprecise scientific communication and incorrect diagnoses result.”
This paper should be of interest to biologists, parasitologists, and veterinarians.
                                Technical Abstract: Numerous species of Sarcocystis have been reported from wild ruminants but none has been named from the Rocky Mountain goat
(Oreamnos americanus). Mature sarcocysts were found in frozen muscle samples of 3 of 7 mountain goats from Alaska, USA. Two
morphological types of sarcocysts were found; 1 had Sarcocystis cornagliai-like sarcocysts, previously named from the Alpine ibex (Capra ibex) from Europe. Two other goats were infected with a new species, Sarcocystis oreamni. Sarcocystis oreamni sarcocysts were
microscopic with 2 μm thick sarcocyst wall. By transmission electron microscopy, the sarcocyst wall had 1.7 μm-thick with unusual molar tooth-like villar protusions (vp). The vp had electron dense core and 2 disc-shaped plaques at the tip with fine microtubules. Bradyzoites were 8.6-9.1 μm long. Single nucleotide polymorphism (SNP) identified in 18S rRNA, and 28S rRNA loci of rDNA regions that suggested S. oreamni molecularly apart from related species. The phylogenetic analysis based 18S rRNA, and 28S rRNA sequences suggested S. oreamni is related with Sarcocystis species that employ member of Canidae family as their definitive host mainly S. capracanis, S. tarandivulpes, and S. tenella.


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