| an ixodes minor and borrelia carolinensis enzootic cycle involving a critically endangered mojave desert rodent. | microtus californicus scirpensis is an endangered, isolated subspecies of california vole. it requires water pools and riparian bulrush (schoenoplectus americanus) and occupies some of the rarest habitat of any north american mammal. the minimally vegetated, extremely arid desert surrounding the pools is essentially uninhabitable for ixodes species ticks. we describe an enzootic cycle of borrelia carolinensis in ixodes minor ticks at a site 3500 km distant from the region in which i. minor is kn ... | 2014 | 25035799 |
| prevalence and potential impact of toxoplasma gondii on the endangered amargosa vole (microtus californicus scirpensis), california, usa. | we investigated the prevalence of toxoplasma gondii in 2011-15 to assess its potential threat on the endangered amargosa vole ( microtus californicus scirpensis) in california, us. surveillance was simultaneously performed on populations of syntopic rodent species. we detected antibodies to t. gondii in sera from 10.5% of 135 wild-caught amargosa voles; 8% of 95 blood samples were pcr-positive for the t. gondii b1 gene, and 5.0% of 140 sympatric rodent brain samples were pcr-positive. exposure t ... | 2017 | 27690194 |
| pathogen infection and exposure, and ectoparasites of the federally endangered amargosa vole (microtus californicus scirpensis), california, usa. | abstract we surveyed pathogens and ectoparasites among federally endangered amargosa voles (microtus californicus scirpensis) and sympatric rodents in tecopa hot springs, inyo county, california, december 2011-november 2012. we aimed to assess disease and detect possible spillover from or connectivity with other hosts within and outside the amargosa ecosystem. we assessed 71 individual voles and 38 individual sympatric rodents for current infection with seven vector-borne zoonotic pathogens and ... | 2014 | 25121407 |
| severe ulceronecrotic dermatitis associated with mite infestation in the critically endangered amargosa vole (microtus californicus scirpensis). | the entire range of the critically endangered amargosa vole (microtus californicus scirpensis) consists of less than 20 km(2) of riparian habitat in the amargosa river drainage of the mojave desert in southern california. in september 2010, deformities on ears and chiggers on the ears and genitalia were detected, with some individuals so severely affected that they were missing ear pinnae altogether. follow-up trapping was performed to document the presence of mites and mite-associated disease, ... | 2013 | 23458565 |
| histopathology and risk factors associated with neotrombicula microti infestation in the endangered amargosa vole (microtus californicus scirpensis). | the amargosa vole (microtus californicus scirpensis) is a profoundly endangered rodent found only in the central mojave desert, inyo county, california, us. in 2010, severe cases of trombiculiasis, caused by larval neotrombicula microti mites, were discovered among voles and sympatric small mammals. we evaluated amargosa voles and sympatric rodents for infestation with n. microti december 2011-november 2012 and evaluated histopathology of ear tissue from 13 actively n. microti-infested amargosa ... | 2015 | 25919470 |
| ameloblastoma of the jaw in three species of rodent: a domestic brown rat (rattus norvegicus), syrian hamster (mesocricetus auratus) and amargosa vole (microtus californicus scirpensis). | ameloblastoma is a locally aggressive tumour derived from the odontogenic epithelium of the developing tooth germ. this uncommon odontogenic tumour is generally considered benign, but rarely, both distant metastasis and cytological atypia occur and this malignant version is referred to as malignant ameloblastic carcinoma. here we document a spontaneous malignant ameloblastic carcinoma in a rat (rattus norvegicus) with metastasis to the submandibular lymph node. we also describe ameloblastomas in ... | 2017 | 28942297 |