| [triatomine fauna of the state of bahia, brazil. iv. triatoma melanocephala neiva and pinto, 1923]. | | 1980 | 6755157 |
| trypanosoma cruzi strains from triatomine collected in bahia and rio grande do sul, brazil. | collection of triatomines in domestic, peridomestic and sylvatic environments in states of bahia and rio grande do sul, northeastern and southern brazil respectively, and isolation of trypanosoma cruzi strains. | 2014 | 24897051 |
| synanthropic triatomines (hemiptera, reduviidae) in the state of pernambuco, brazil: geographical distribution and natural trypanosoma infection rates between 2006 and 2007. | the present study shows a descriptive analysis of triatomine occurrence and its natural trypanosoma infection rates in the state of pernambuco, brazil, between 2006 and 2007. | 2012 | 22370830 |
| distribution of constitutive heterochromatin in species of triatomines with fragmentation of sex chromosomes x. | cytogenetic analyses of triatomines are considered to be important taxonomic tools. thus, we analyzed the pattern of constitutive heterochromatin in 7 species of triatomine with fragmentation of the sex chromosome x, focusing on the cytotaxonomy of these triatomines. the species analyzed included triatoma vitticeps, triatoma melanocephala, triatoma tibiamaculata, triatoma protracta, meccus pallidipennis, panstrongylus megistus, and panstrongylus lignarius. the seminiferous tubules of the adult m ... | 2014 | 25501239 |
| distribution of constitutive heterochromatin in triatoma melanocephala (hemiptera, triatominae). | in principle, triatoma melanocephala was included in the brasiliensis subcomplex on the basis of morphological parameters and geographical layout, since there were no other relevant data available in the literature. on the basis of karyotype, it has been proposed to exclude t. melanocephala, as well as of t. vitticeps and t. tibiamaculata, from the subcomplex, which shows fragmentation of the x sex chromosomes, thereby approaching the species of north america. therefore, the present study aimed ... | 2014 | 25299104 |
| spermatogenesis in triatoma melanocephala (hemiptera: triatominae). | triatoma melanocephala is a rare species of hemiptera. it belonged to the brasiliensis subcomplex and presents morphological characteristics very close to those of triatoma vitticeps. we investigated spermatogenesis of t. melanocephala and compared it with that of t. vitticeps in order to determine whether these organisms have similar cytogenetic characteristics. lacto-acetic orcein staining was used to observe all stages of meiosis. these two species were found to have the same karyotype (2n = ... | 2013 | 24301754 |
| karyotype of triatoma melanocephala neiva and pinto (1923). does this species fit in the brasiliensis subcomplex? | triatoma melanocephala is a rare species of hemiptera that belongs to the brasiliensis subcomplex. this subcomplex is composed of cryptic species, and the basic number of chromosomes for triatomines of this subcomplex is 2n = 22; however, t. melanocephala showed a karyotype of 2n = 24 (20a + x(1)x(2)x(3)y). thus, this study allowed us to describe the karyotype of the species and, more specifically, to propose the exclusion of t. melanocephala, as well as t. vitticeps and t. tibiamaculata, which ... | 2012 | 22760157 |
| triatoma vitticeps subcomplex (hemiptera, reduviidae, triatominae): a new grouping of chagas disease vectors from south america. | triatomines have been grouped into complexes and subcomplexes based largely on morphological and geographical distribution. although these groupings are not formally recognised as taxonomic ranks, they are likely monophyletic. however, recent studies have demonstrated that some subcomplexes from south america did not form monophyletic groups, and reorganisations have been suggested. one suggested reorganisation is to exclude triatoma vitticeps, t. melanocephala, and t. tibiamaculata from the t. ... | 2017 | 28407782 |
| multiple mitochondrial genes of some sylvatic brazilian triatoma: non-monophyly of the t. brasiliensis subcomplex and the need for a generic revision in the triatomini. | multiple fragments of mitochondrial dna genes (cytochrome b, cytochrome oxidase i, and 16s rdna) were used to evaluate the phylogenetic relationships among triatoma melanocephala, triatoma tibiamaculata, triatoma vitticeps, and other members of triatoma brasiliensis subcomplex under a bayesian framework and maximum parsimony criterion. with the addition of new sequences of t. tibiamaculata and t. vitticeps, triatoma juazeirensis, triatoma melanica and the newly sequenced t. melanocephala, the th ... | 2014 | 24508245 |
| biological, morphological and morphometric studies of triatoma melanocephala neiva & pinto, 1923 (hemiptera: reduviidae: triatominae). | triatoma melanocephala neiva & pinto is found in the brazilian states of bahia, paraíba, pernambuco, rio grande do norte, and sergipe. in addition to the species' specific description, eight other articles on this insect were found in the literature. in this study, data was obtained on the morphology, morphometry, and life cycle of t. melanocephala, since this vector is of epidemiological and taxonomic importance. the specimens studied were obtained from a colony that has been kept at the triato ... | 2015 | 26623872 |