| effect of inbreeding on juvenile mortality in some small mammal species. | in breeding records for 12 species of small mammals from 9 families in 3 orders, individuals with an inbreeding coefficient of 0 were classified as non-inbred, those with inbreeding coefficients greater than 0 as inbred. juvenile mortality was defined as all deaths prior to 1/2 of the age of sexual maturity for each species. it was significantly higher for inbred than for noninbred animals in 11 of the 12 species using a 1-tailed sign test, and by fisher's exact test in 3 species. monodelphis do ... | 1982 | 7043080 |
| pcr-based diagnosis for detection of leishmania in skin and blood of rodents from an endemic area of cutaneous and visceral leishmaniasis in brazil. | the technique of polymerase chain reaction (pcr) associated to hybridization was used to screen 123 samples collected from wild and synanthropic rodents captured in a cutaneous and visceral leishmaniasis endemic area in the state of minas gerais, brazil. the detection of leishmania spp in naturally infected rodents is of fundamental importance for incriminating them as possible reservoir hosts of the diseases in minas gerais. a total of 62 specimens belonging to wild (thrichomys apereoides, oryz ... | 2005 | 15845276 |
| domestic, peridomestic and wild hosts in the transmission of trypanosoma cruzi in the caatinga area colonised by triatoma brasiliensis. | the role played by different mammal species in the maintenance of trypanosoma cruzi is not constant and varies in time and place. this study aimed to characterise the importance of domestic, wild and peridomestic hosts in the transmission of t. cruzi in tauá, state of ceará, caatinga area, brazil, with an emphasis on those environments colonised by triatoma brasiliensis. direct parasitological examinations were performed on insects and mammals, serologic tests were performed on household and out ... | 2014 | 25410992 |
| domestic, peridomestic and wild hosts in the transmission of trypanosoma cruzi in the caatinga area colonised by triatoma brasiliensis. | the role played by different mammal species in the maintenance of trypanosoma cruzi is not constant and varies in time and place. this study aimed to characterise the importance of domestic, wild and peridomestic hosts in the transmission of t. cruzi in tauá, state of ceará, caatinga area, brazil, with an emphasis on those environments colonised by triatoma brasiliensis. direct parasitological examinations were performed on insects and mammals, serologic tests were performed on household and out ... | 2014 | 25165976 |
| molecular phylogenetic position of endangered wilfredomys within sigmodontinae (cricetidae) based on mitochondrial and nuclear dna sequences and comments on wiedomyini. | wilfredomys, a monotypic genus of endangered sigmodontine rats, was historically related to the tribe thomasomyini or considered "incertae sedis". given no molecular data is available for wilfredomys, the phylogenetic position of this taxon is uncertain in relation to modern, molecular hypotheses of sigmodontine relationships. we investigate the phylogeny of wilfredomys to provide a hypothesis of its position within sigmodontinae based on nuclear and mitochondrial dna sequences. bayesian and max ... | 2015 | 26250197 |
| tick-borne pathogens in dogs, wild small mammals and their ectoparasites in the semi-arid caatinga biome, northeastern brazil. | caatinga is a biome exclusive to the semiarid zone of brazil, where studies on ticks and tick-borne diseases are scarce. herein, we investigated the occurrence of rickettsia, ehrlichia, and coxiella in wild mammals, domestic dogs and their ectoparasites using molecular and serological techniques. during 2014-2016, blood samples and ectoparasites were collected from 70 small mammals (51 rodents, 18 marsupials, 1 wild canid) and 147 domestic dogs in three areas of the caatinga. through serological ... | 2020 | 32111546 |