| fine-scale predictions of distributions of chagas disease vectors in the state of guanajuato, mexico. | one of the most daunting challenges for chagas disease surveillance and control in mexico is the lack of community level data on vector distributions. although many states now have assembled representative domestic triatomine collections, only two triatomine specimens had been collected and reported previously from the state of guanajuato. field personnel from the state's secretaría de salud conducted health promotion activities in 43 of the 46 counties in the state and received donations of a t ... | 2005 | 16465750 |
| human infection and risk of transmission of chagas disease in hidalgo state, mexico. | new zones with risk of infection for chagas disease were reported in san antonio tezoquipan, caltimacan, and el ahorcado in the hidalgo state of mexico. antibodies to trypanosoma cruzi were detected by enzyme-linked immunosorbent assay and indirect hemagglutination assay in human serum samples. study subjects were also given an electrocardiogram. trypanosoma cruzi was isolated from triatomines collected and its virulence was determined in balb/c mice. seropositive persons were found in the three ... | 2007 | 17297042 |
| influence of temperature and humidity on the biology of triatoma mexicana (hemiptera: reduviidae: triatominae) under laboratory conditions. | several biological parameters related to the triatoma mexicana life-cycle were evaluated in this study. three cohorts were maintained under different combinations of temperature and relative humidity (rh): 25 degrees c/50% rh; 25 degrees c/75% rh; and 30 degrees c/75% rh. observed hatching rates varied from 49-57.5% whereas the average time of hatching varied from 19.5-22.7 days. in the three cohorts studied, the mean time-lapse between presentation of the blood meal and the beginning of feeding ... | 2008 | 19057824 |
| biological and genetic aspects of crosses between phylogenetically close species of mexican triatomines (hemiptera: reduviidae). | reproductive isolation between triatoma mexicana (herrich-scaeffer) and the six species of the phyllosoma complex, belonging to the genus meccus, was examined by analyzing the fertility of experimental hybrids. the percentage of couples with offspring was highest in the set of crosses between meccus phyllosomus (burmeister) and t. mexicana, and lowest in those between meccus pallidipennis (st├ñl) and meccus bassolsae (alejandre-aguilar, nogueda-torres, cort├®s-jim├®nez, jurberg, galv├úo, and car ... | 2011 | 21661335 |
| atlas of mexican triatominae (reduviidae: hemiptera) and vector transmission of chagas disease. | chagas disease is one of the most important yet neglected parasitic diseases in mexico and is transmitted by triatominae. nineteen of the 31 mexican triatomine species have been consistently found to invade human houses and all have been found to be naturally infected with trypanosoma cruzi. the present paper aims to produce a state-of-knowledge atlas of mexican triatomines and analyse their geographic associations with t. cruzi, human demographics and landscape modification. ecological niche mo ... | 2015 | 25993505 |
| genetic variation of north american triatomines (insecta: hemiptera: reduviidae): initial divergence between species and populations of chagas disease vector. | the triatomines vectors of trypanosoma cruzi are principal factors in acquiring chagas disease. for this reason, increased knowledge of domestic transmission of t. cruzi and control of its insect vectors is necessary. to contribute to genetic knowledge of north america triatominae species, we studied genetic variations and conducted phylogenetic analysis of different triatomines species of epidemiologic importance. our analysis showed high genetic variations between different geographic populati ... | 2013 | 23249692 |
| nuclear rdna pseudogenes in chagas disease vectors: evolutionary implications of a new 5.8s+its-2 paralogous sequence marker in triatomines of north, central and northern south america. | a pseudogene, paralogous to rdna 5.8s and its-2, is described in meccus dimidiata dimidiata, m. d. capitata, m. d. maculippenis, m. d. hegneri, m. sp. aff. dimidiata, m. p. phyllosoma, m. p. longipennis, m. p. pallidipennis, m. p. picturata, m. p. mazzottii, triatoma mexicana, triatoma nitida and triatoma sanguisuga, covering north america, central america and northern south america. such a nuclear rdna pseudogene is very rare. in the 5.8s gene, criteria for pseudogene identification included le ... | 2014 | 24239656 |
| natural infection and distribution of triatomines (hemiptera: reduviidae) in the state of querétaro, mexico. | chagas disease is present in mexico but data on the presence of its vectors are not known for all the states. we conducted an epidemiological study to ascertain the presence of bedbugs in 23 communities of seven municipalities in the state of querétaro, mexico. sampling was performed within and outside dwellings, using the technique of one person searching per hour per house. four triatomine species were found: triatoma mexicana (94%), tri. dimidiata (3%), tri. gerstaeckeri (2%) and tri. pallidi ... | 2008 | 18589465 |
| triatoma mexicana (hemiptera: reduviidae) in guanajuato, mexico: house infestation and seasonal variation. | triatoma mexicana was described by herrich-schaeffer in 1848. in 1940, a male specimen was found in hidalgo. in 1970, this species was recorded in the state of queretaro. later, it was registered in guanajuato and san luis potosi. in the present paper we performed an investigation in 545 dwellings from three counties in the state of guanajuato, mexico, from march 2003 to may 2004. the search and capture of triatomines were seasonally performed indoors and outdoors. entomological indexes were cal ... | 2007 | 18060318 |