| triatoma patagonica (hemiptera, reduviidae), a new host for triatoma virus. | previous authors demonstrated that triatoma virus (trv) is able to infect several species of triatomines when injected with viral inoculum obtained from its original host, t. infestans. both vertical (transovarian) and horizontal (faecal-oral) mechanisms of viral transmission were also described. in this paper we report the experimental trv infection of a wild species from southern argentina, t. patagonica. the inoculum consisted of clarified gut contents of infected t. infestans rubbed on the c ... | 2002 | 12048578 |
| feeding and defaecation behaviour of triatoma patagonica (del ponte, 1929) (hemiptera: reduviidae). | among the vectors of chagas disease, triatoma patagonica is a species in the process of adaptation to the human environment being recently registered in urban and suburban zones. however, its importance as a vector of chagas disease is unknown. the aim of this work was to evaluate two aspects of vectorial competence: the feeding behaviour and the defaecation pattern. these processes were studied in females of t. patagonica fed ad libitum on a restrained pigeon. the results showed that the blood ... | 2002 | 12471437 |
| ecological characteristics of triatoma patagonica at the southern limit of its distribution (chubut, argentina). | this study aimed at identifying the ecological characteristics of triatoma patagonica del ponte 1929 (hemiptera: reduviidae) and evaluating the epidemiological importance of this species at its southernmost distribution limit. we carried out two surveys in the province of chubut, in summer and in spring, 1998. in each survey, we interviewed local health care agents for triatomine recognition and reports of the bugs, followed by entomological searches in houses and peridomestic and silvatic bioto ... | 2004 | 15068002 |
| comparison of feeding and defecation patterns between fifth-instar nymphs of triatoma patagonica (del ponte, 1929) and triatoma infestans (klug, 1934) under laboratory conditions. | among the vectors of chagas disease, triatoma patagonica is a species in the process of adaptation to the human environment. however, its vector competence is not well known. this study had the aim of evaluating and comparing feeding and defecation patterns among fifth-instar nymphs of triatoma patagonica and triatoma infestans that were fed ad libitum. the results showed that nymphs of triatoma patagonica had a feeding pattern similar to that of triatoma infestans. sixty nine percent and 58% of ... | 2008 | 18853002 |
| cholinesterase activity during embryonic development in the blood-feeding bug triatoma patagonica. | triatoma patagonica del ponte (hemiptera: reduviidae), a vector of chagas' disease, is widely distributed in argentina and is found in sylvatic and peridomiciliary ecotopes, as well as occasionally in human dwellings after the chemical control of triatoma infestans. anti-cholinesteratic products can be applied in peridomiciliary areas and thus knowledge of cholinesterase activity during embryonic development in this species might contribute further information relevant to effective chemical cont ... | 2011 | 21671969 |
| effect of feeding frequency on the reproductive efficiency of two species of triatoma with different epidemiological importance. | in triatominae, reproductive efficiency is an important factor influencing population dynamics, and a useful parameter in measuring a species' epidemiological significance as a vector of trypanosoma cruzi (chagas, 1909). the reproductive efficiency of triatomines is affected by food availability; hence, we measured and compared the effects of feeding frequency on the reproductive parameters of triatoma patagonica (del ponte, 1929) and triatoma infestans (klug, 1934), and the effects of starvatio ... | 2014 | 25229282 |
| effects of blood meal source on food resource use and reproduction in triatoma patagonica del ponte (hemiptera, reduviidae). | triatoma patagonica (del ponte, 1929) (hemiptera-reduviidae) is a peridomestic vector of chagas disease that has been frequently found colonizing peridomestic structures in several localities in argentina. studying relationships between feeding and reproductive factors is important because these traits regulate population density and define vectorial capacity. since t. patagonica can circulate among peridomestic structures taking blood from both bird and mammal hosts, we evaluated the extent to ... | 2013 | 23701617 |
| morphological and genetic differentiation within the southernmost vector of chagas disease: triatoma patagonica (hemiptera - reduviidae). | the epidemiological importance of chagas disease vectors largely depends on their spreading ability and adaptation to domestic habitats. triatoma patagonica is a secondary vector of chagas disease endemic of argentina, and it has been found colonizing domiciles and most commonly peridomiciliary structures in several argentine provinces and morphological variation along its distribution range have been described. to asses if population differentiation represents geographic variants or true biolog ... | 2016 | 28005972 |
| morphometric variability among the species of the sordida subcomplex (hemiptera: reduviidae: triatominae): evidence for differentiation across the distribution range of triatoma sordida. | the sordida subcomplex (triatominae) comprises four species, triatoma garciabesi, t. guasayana, t. patagonica and t. sordida, which differ in epidemiological importance and adaptations to human environments. some morphological similarities among species make taxonomic identification, population differentiation and species delimitation controversial. triatoma garciabesi and t. sordida are the most similar species, having been considered alternatively two and a single species until t. garciabesi w ... | 2017 | 28877741 |
| the cuticular hydrocarbons of the triatoma sordida species subcomplex (hemiptera: reduviidae). | the cuticular hydrocarbons of the triatoma sordida subcomplex (hemiptera: reduviidae: triatominae) were ana-lysed by gas chromatography and their structures identified by mass spectrometry. they comprised mostly n-alkanes and methyl-branched alkanes with one-four methyl substitutions. n-alkanes consisted of a homologous series from c21-c33 and represented 33-45% of the hydrocarbon fraction; n-c29 was the major component. methyl-branched alkanes showed alkyl chains from c24-c43. high molecular we ... | 2013 | 24037201 |
| changes related to gender, geographic population and habitat in the antennal phenotype of triatoma patagonica del ponte, 1929 (hemiptera: reduviidae). | triatomines undergo morphological changes as an adaptive response to different habitats (wild, peridomestic, domestic, laboratory). the characterization of the antennal phenotype provides information on intraspecific variation caused by geographical origin and/or habitat. triatoma patagonica del ponte, 1929 is known to occur in peridomiciles of rural areas in argentina, where it also invades non-colonized dwellings. here we describe and compare the antennal phenotype of t. patagonica in populati ... | 2013 | 23178218 |