| arthropod and filarioid parasites associated with wild rodents in the northeast marshes of buenos aires, argentina. | during 1995, 16 species of arthropods and 2 species of filarioids, totaling 1 287 specimens were collected from 64 wild rodents captured in the hudson natural reserve, buenos aires, argentina. infestation parameters and indexes were analyzed. host specific richness was s = 6, diversity h = 1.48, and relative density rdi = 40%. high values of parasite species richness and diversity were found on oligoryzomys delticola (s = 9; h = 1.40), oxymycterus rufus (s = 9; h = 1.37), and oligoryzomys flaves ... | 2003 | 12973536 |
| prevalence of infection with hantavirus in rodent populations of central argentina. | we studied hantavirus seroprevalence and virus variability in rodent populations in diego gaynor, northwest of buenos aires province, argentina. rodent samplings were conducted in railroads and cropfield borders in march and july 1999, september and december 2000, and march 2001. antibody detection was performed by an enzyme link immunosorbent assay (elisa), using the recombinant nucleoprotein of andes (and) virus as antigen. tissue samples were taken from positive antibody individuals in order ... | 2003 | 14595446 |
| redescription of trichuris laevitestis (nematoda: trichuridae) from akodon azarae and scapteromys aquaticus (sigmodontinae: cricetidae) in buenos aires province, argentina. | trichuris spp. have a cosmopolitan distribution; the species are typically identified by features related to the reproductive system. trichuris laevitestis was described on the basis of specimens collected from rodents captured in punta lara, buenos aires province, argentina. here, t. laevitestis is redescribed considering new and relevant morphological features of diagnostic importance such as arrangement of spines on the spicular sheath, spicule length, length and shape of proximal cloacal tub ... | 2006 | 17152950 |
| a new species of liniscus (nematoda: trichuridae) from oxymycterus rufus and akodon azarae (cricetidae: sigmodontinae) in buenos aires province, argentina. | liniscus diazae n. sp. (nematoda: trichuridae) is described from the urinary bladder of oxymycterus rufus and akodon azarae (cricetidae: sigmodontinae) from buenos aires province, argentina. liniscus diazae can be differentiated from its congeners by having a much longer spicule and without an elevated vulva. in addition, l. diazae can be distinguished from l. incrassatus and l. himizu by having a longer body length. males are similar in posterior width to l. papillosus and l. himizu, but thinne ... | 2008 | 18576745 |
| bot fly parasitism (rogenhofera bonaerensis) (diptera, cuterebridae) in the pampean grassland mouse (akodon azarae), in argentina. | seasonality and impact of parasitism by the larvae of rogenhofera bonaerensis (diptera: cuterebridae) in pampean grassland mouse (akodon azarae, rodentia, cricetidae) populations were studied in grasslands and cropfield borders near diego gaynor (buenos aires province, argentina), from november 1985 to december 1986. trapped mice infections ranged from one larva (77%) to four (4%) per host; larvae occurred on tails (75.7%), backs (17.1%), thighs (5.7%), and abdomen (1.4%). prevalence of larvae o ... | 1990 | 2406466 |
| the parasitism of immature stages of ixodes loricatus (acari: ixodidae) on wild rodents in argentina. | ixodes loricatus has long been considered with strict-total specificity to new world marsupials. however, frequent findings of its immature stages on rodents suggest that these vertebrates play an important role in the tick's life cycle. aspects dealing with the ecology of sigmodontinae rodents infestation by i. loricatus are unknown. to contribute to the knowledge of the ecology of this tick species, environmental factors, as well as host species, sex and age, were evaluated to find association ... | 2005 | 16082931 |
| interrelationship between ectoparasites and wild rodents from northeastern buenos aires province, argentina. | infestation parameters and indices of mites, ticks and fleas associated with wild rodents from northeastern buenos aires province, argentina, were studied. host species similarity was also analyzed in relation to their ectoparasites. fifty-five rodents were captured from january 2000 to march 2001. in total, 1,022 ectoparasites were collected and three ectoparasite-host associations were new records. however, this is the first study on craneopsylla minerva wolffhuegeli infesting parameters. ecto ... | 2003 | 12700861 |
| two new species of nippostrongylinae (nematoda: trichostrongylina: heligmonellidae) from the grey leaf-eared mouse graomys griseoflavus (sigmodontinae) in argentina. | two new species of nippostrongylinae, hassalstrongylus puntanus n. sp., and stilestrongylus franciscanus n. sp. are described from the intestine of the grey leaf-eared mouse graomys griseoflavus (waterhouse, 1837) (sigmodontinae) from the province of san luis, argentina. hassalstrongylus puntanus n. sp. is distinguished from the most closely related species h. dollfusi (díaz-ungría, 1963), a parasite of mus musculus from venezuela by longer rays 2, shorter rays 4, proximal half of the dorsal ray ... | 2003 | 12669346 |