| leishmaniasis in brazil. 3. cutaneous leishmaniasis in an opossum, marmosa murina (marsupialia, didelphidae) from the lower amazon region. | | 1969 | 5368004 |
| (t2ag3)n telomeric sequence hybridization suggestive of centric fusion in karyotype marsupials evolution. | it has been suggested that the karyotype of the marsupials derived from a low diploid number (2n = 14) which originated, through fissions of biarmed chromosomes, the karyotypes with a higher 2n. the telomeric sequence (t2ag3)n was in situ hybridized to the chromosomes of gracilinanus microtarsus and g. emiliae, micoureus demerarae and marmosa murina, species with 2n = 14, in monodelphis sp., m. domestica, m. kunsi and m. brevicaudata with 2n = 18, and in lutreolina crassicaudata, didelphis albiv ... | 2000 | 11294606 |
| seroprevalence of toxoplasma gondii in wild marsupials and rodents from the atlantic forest of pernambuco state, northeastern region, brazil. | felids are important in the epidemiology of toxoplasma gondii because they are the only hosts that can excrete the environmentally resistant oocysts in their feces. cats acquire t. gondii infection in nature by ingesting tissues of small mammals and birds. serum samples of 223 feral marsupials and 174 feral rodents captured in 7 segments of the atlantic forest of the state of pernambuco, northeastern region of brazil, and in urban areas of the municipality of recife were examined for antibodies ... | 2013 | 23829204 |
| the araguaia river as an important biogeographical divide for didelphid marsupials in central brazil. | the riverine barrier model suggests that rivers play a significant role in separating widespread organisms into isolated populations. in this study, we used a comparative approach to investigate the phylogeography of 6 didelphid marsupial species in central brazil. specifically, we evaluate the role of the mid-araguaia river in differentiating populations and estimate divergence time among lineages to assess the timing of differentiation of these species, using mitochondrial dna sequence data. t ... | 2015 | 26249652 |
| functional-adaptive anatomy of the forelimb in the didelphidae, and the paleobiology of the paleocene marsupials mayulestes ferox and pucadelphys andinus. | an attempt to determine the locomotor activities of mayulestes ferox (borhyaenoidea) and pucadelphys andinus (didelphoidea) from the early paleocene site of tiupampa (bolivia) is presented. the functional anatomy of the forelimbs of these south american marsupials is compared to that of some living didelphids: caluromys philander, micoureus demerarae, marmosa murina, didelphis marsupialis, monodelphis brevicaudata and metachirus nudicaudatus. deductions from bone morphology to myology and locomo ... | 2001 | 11124686 |
| the relationships of marsupial-dwelling viannaiidae and description of travassostrongylus scheibelorum sp. n. (trichostrongylina: heligmosomoidea) from mouse opossums (didelphidae) from french guiana. | the trichostrongylid nematode travassostrongylus scheibelorum sp. n. from the linnaeus' mouse opossum, marmosa murina (linnaeus) (type host), and the woolly mouse opossum, marmosa demerarae (thomas), from french guiana is described. the nematodes have a synlophe with ridges frontally oriented from right to left, six dorsal and six ventral, at midbody; seven dorsal and seven ventral posterior to the vulva, and two cuticular thickenings within the lateral spaces; a long dorsal ray and a pointed cu ... | 2014 | 25065130 |
| development and evaluation of a duplex taqman qpcr assay for detection and quantification of trypanosoma cruzi infection in domestic and sylvatic reservoir hosts. | a question of epidemiological relevance in chagas disease studies is to understand trypanosoma cruzi transmission cycles and trace the origins of (re)emerging cases in areas under vector or disease surveillance. conventional parasitological methods lack sensitivity whereas molecular approaches can fill in this gap, provided that an adequate sample can be collected and processed and a nucleic acid amplification method can be developed and standardized. we developed a duplex qpcr assay for accurat ... | 2019 | 31783770 |
| eimeria spp. (apicomplexa: eimeriidae) of marsupials (mammalia: didelphimorphia) in southern bahia, brazil. | the occurrence of eimeria schneider, 1875 in mammals of the order didelphimorphia indicates the infection-predisposition of these animals, which in turn is mainly determined for their eating habits. the objective of this work was to evaluate the parasitism of eimeria spp. in marsupials of the atlantic forest of the southern region of bahia. fecal samples were collected from marsupials captured in the regions of ilhéus, una, belmonte and mascote, with traps of the sherman model (23 × 8 × 9 cm), t ... | 2019 | 30427519 |
| new host records of ixodes luciae (acari: ixodidae) in the state of para, brazil. | the aim of this paper is to record new hosts for ixodes luciae sénevet in the state of para, brazil, and present a case of malformation (teratogeny) in a nymph of this species. the new host records are marmosa murina (parasitized by females) and philander opossum (parasitized by nymphs). one of these nymphs showed malformation in the posterior margin of the opisthosoma resulting in a heart shaped posterior end. | 2013 | 24252962 |
| revision of the family listropsoralgidae fain, 1965 (acariformes: sarcoptoidea)-skin parasites of marsupials and rodents. | the family listropsoralgidae fain, 1965 (acariformes: sarcoptoidea) is represented by the permanent skin ectoparasites associated with the south american and australian marsupials (12 species) and the south american rodents of the family echimyidae (1 species). the phylogenetic relationships of these mites (12 ingroup and 2 outgroup species) are reconstructed on the basis of the maximum parsimony (mp) and bayesian analyses (ba) of 76 morphological characters. mp analysis confirmed monophyly of t ... | 2013 | 24699778 |
| didelphidae marsupials (mammalia, didelphimorphia) from the late pleistocene deposit of the gruta dos moura cave, northern brazil. | the present study acknowledges the diversity of fossil marsupials from the gruta dos moura cave, as well as environmental and climatic aspects during the quaternary. the results show that this is the largest diversity of pleistocene marsupials recorded in a single cave: didelphis albiventris, d. aurita, gracilinanus agilis, g. microtarsus, marmosa murina, monodelphis brevicaudata, m. domestica and sairadelphys tocantinensis. furthermore, the described specimens are also part of the only fossil a ... | 2015 | 25806985 |
| mapping the distribution of the interstitial telomeric (ttaggg)n sequences in eight species of brazilian marsupials (didelphidae) by fish and the correlation with constitutive heterochromatin. do its represent evidence for fusion events in american marsupials? | the c-band pattern and the distribution of the (ttaggg)(n) sequence after fluorescence in situ hybridization (fish), were studied in eight species of didelphidae marsupials: four species with 2n = 14 (marmosops parvidens, marmosops incanus, marmosa murina and metachirus nudicaudatus), two species with 2n = 18 (monodelphis domestica and m. americana), and two with 2n = 22 (didelphis marsupialis and lutreolina crassicaudata). the hybridization signals were observed at both termini telomeres of all ... | 2002 | 12826754 |
| comparison of the heterochromatin and telomeric sequences distribuition in chromosomes of 11 species of amazonian marsupials (didelphimorphia; didelphidae). | in recent decades the diploid numbers recorded in the new world marsupials have been widely discussed in the context of the processes of karyotype evolution in these mammals. while interstitial telomeric sequences (its) have long been interpreted as remnants of chromosomal fusion, the biological role of these features, together with their intraspecific variation, has raised a number of questions. in the present study, we analyzed the karyotype of 11 species of amazonian didelphids, comparing the ... | 2020 | 32396598 |
| comparative cytogenetics of some marsupial species (didelphimorphia, didelphidae) from the amazon basin. | we investigated the karyotype of 18 didelphid species captured at 13 localities in the brazilian amazon, after conventional staining, c-banding, ag-nor and fluorescentin situhybridization (fish) using the 18s rdna probe. variations were found in the x chromosome, heterochromatin distribution and the 18s rdna sequence. the main variation observed was in the position of the centromere in the x chromosome ofcaluromys philanderlinnaeus, 1758 andmarmosa murinalinnaeus, 1758. for both species, the x c ... | 2017 | 29114362 |