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Biologic Development of Triatoma mexicana (Herrich-Schaeffer 1848) (Hemiptera: Reduviidae: Triatominae) under Laboratory Conditions
M.A. Becerril-Flores,A. Aguilar-Hernandez,J.L. Imbert-Palafox
International Journal of Tropical Medicine , 2012,
Abstract: Triatoma mexicana is one of the triatomine species whose biologic development is yet unknown, but it is frequently reported to be infected by Trypanosoma cruzi. In this research, we explore the life cycle and reproductive and feeding patterns of T. mexicana under laboratory conditions. Ten female and 12 male insects were collected to make up a artificial colony. The deposited eggs were maintained in the laboratory under 3 different conditions: 27 C and 66% humidity, 26 C and 35% humidity and 19 C and 45% humidity (these last were room temperature and humidity). Nymph and adult insects were fed on CD-1 mice and chicken once a week in order to study the alimentary preference of this triatomine species. Our observations were that 71.5% of successful hatching took place at 27 C and 66% humidity, therefore were the better environmental conditions for T. mexicana. Out of successfully hatched ones, 8% survived till adulthood, in which 2.5% were males and 5.5% were females, at the end of 338.66 35.38 days. In the adult phase, the insects survived between 100 and 190 days. In 1st to 4th instars, T. mexicana was fed for 1-3 times; in 5th instar for 1-4 times and in adulthood for 3-7 times. Each feeding occurred at an interval of 15-34 days. The morphologic characteristics of every instar phase are described by photographs. Through this research, biologic cycle and survival conditions of T. mexicana were explored for the first time.
Glandular areas associated with the male genitalia in Triatoma rubrofasciata (Triatominae, Reduviidae, Hemiptera) and other Reduviidae
Weirauch, Christiane;
Memórias do Instituto Oswaldo Cruz , 2003, DOI: 10.1590/S0074-02762003000600011
Abstract: in this paper, glandular areas associated with the phallus in triatoma rubrofasciata are described and illustrated for the first time. the glandular areas lie in the membrane surrounding the articulatory apparatus. in order to unambiguously define the locality of the respective glandular areas, some features of the pygophore-phallus connection are redescribed. a possible functional context of the gland secretions is discussed. a preliminary study of several other reduviidae implies that the described glandular areas occur in a wider range of taxa in this group.
Glandular areas associated with the male genitalia in Triatoma rubrofasciata (Triatominae, Reduviidae, Hemiptera) and other Reduviidae  [cached]
Weirauch Christiane
Memórias do Instituto Oswaldo Cruz , 2003,
Abstract: In this paper, glandular areas associated with the phallus in Triatoma rubrofasciata are described and illustrated for the first time. The glandular areas lie in the membrane surrounding the articulatory apparatus. In order to unambiguously define the locality of the respective glandular areas, some features of the pygophore-phallus connection are redescribed. A possible functional context of the gland secretions is discussed. A preliminary study of several other Reduviidae implies that the described glandular areas occur in a wider range of taxa in this group.
Chromosome numbers in the Triatominae (Hemiptera-Reduviidae): a review
Panzera, Francisco;Pérez, Ruben;Hornos, Sonia;Panzera, Yanina;Cestau, Rosario;Delgado, Verónica;Nicolini, Paula;
Memórias do Instituto Oswaldo Cruz , 1996, DOI: 10.1590/S0074-02761996000400021
Abstract: the chromosome numbers of 46 out of the 122 currently recognized species of triatominae (hemiptera, reduviidae) are summarized. we present the number of autosomes, the sex mechanism and the first reference for each karyotype.
Why are the subfamily relationships of Triatominae (Hemiptera: Reduviidae) important?
Schaefer, Carl W.;
Entomología y Vectores , 2005, DOI: 10.1590/S0328-03812005000100002
Abstract: why are the subfamily relationships of triatominae (hemiptera: reduviidae) important?-this question is really two: is triatominae a phylogenetically valid monophyletic subfamily; and, if it is, to what other reduviid subfamilies is it most closely related? if the answer to the first question is yes, then what one knows about one member of triatominae may be true for other members; if the answer is no, then no such prediction can be made. because many members of triatominae are of medical importance, such predictions are vitally (literally) important. for the same reason, knowledge of the subfamily relatives of medically important triatomines is important: for here too predictions about one related member can be based on knowledge of others. these points are discussed here, and the evidence for and against (especially against) monophyly of triatominae is also discussed. the status of linshcosteus, the only old world genus of triatominae, is also discussed.
Eratyrus mucronatus (Stal, 1859) (Hemiptera, Reduviidae, Triatominae): primer registro para el estado Anzoátegui (Venezuela)
Morocoima,Antonio; Chique,José; Herrera,Leidi; Urdaneta-Morales,Servio;
Boletín de Malariología y Salud Ambiental , 2010,
Abstract: the authors report the presence of eratyrus mucronatus (stal, 1859) (hemiptera, reduviidae, triatominae) infected with trypanosoma cruzi, in an urban peridomiciliar area (universidad de oriente, núcleo de anzoátegui, anzoátegui state, venezuela), what represents, to our knowledge, the first report of the species for this state. the epidemiological importance of this finding is emphasized.
Hermanlentia n. gen. da tribo Triatomini, com um rol de espécies de Triatominae (Hemiptera, Reduviidae)
Memórias do Instituto Oswaldo Cruz , 1997, DOI: 10.1590/S0074-02761997000200009
Abstract: hermanlentia n. gen. of tribe triatomini, with a list of species of triatominae (hemiptera, reduviidae) - hermanlentia n. gen. was established in the tribe triatomini, based on differences of external morphology, phallic structures and chromatic characters of triatoma matsunoi fernandez-loayza 1989, in relation to other species of triatoma. the head is long with disproportionally small eyes 1:0,16; the relation of the head and the pronotum is 1: 0,4; and the coloration of the hemelytron is whitish. characters of the male genitalia that distinguish the new genus are the articulatory apparatus with twice the size of the aedeagus, phallosoma with fingerlike apex, 1 + 1 dorsal conjuntive processes with the inner edge toothed, and absence of endosoma process and vesica
Hermanlentia n. gen. da tribo Triatomini, com um rol de espécies de Triatominae (Hemiptera, Reduviidae)  [cached]
Jurberg José,Galv?o Cleber
Memórias do Instituto Oswaldo Cruz , 1997,
Abstract: Hermanlentia n. gen. of Tribe Triatomini, with a List of Species of Triatominae (Hemiptera, Reduviidae) - Hermanlentia n. gen. was established in the tribe Triatomini, based on differences of external morphology, phallic structures and chromatic characters of Triatoma matsunoi Fernandez-Loayza 1989, in relation to other species of Triatoma. The head is long with disproportionally small eyes 1:0,16; the relation of the head and the pronotum is 1: 0,4; and the coloration of the hemelytron is whitish. Characters of the male genitalia that distinguish the new genus are the articulatory apparatus with twice the size of the aedeagus, phallosoma with fingerlike apex, 1 + 1 dorsal conjuntive processes with the inner edge toothed, and absence of endosoma process and vesica
Hemolymphatic components in vectors of Trypanosoma cruzi: study in several species of the subfamily Triatominae (Hemiptera: Reduviidae)
Canavoso, Lilián Etelvina;Rubiolo, Edilberto René;
Revista do Instituto de Medicina Tropical de S?o Paulo , 1993, DOI: 10.1590/S0036-46651993000200003
Abstract: the members of the subfamily triatominae (hemiptera : reduviidae) comprise a great number of species of medical importance in the transmission of the t. cruzi (american trypanosomiasis). the aim of this study was to contribute to the knowledge about the chemical composition in proteins, lipids, lipoproteins, and carbohydrates of vectors of chagas' disease corresponding to twelve members of the subfamily triatominae. this study was carried out in ninphs of the fifth instar and adult males of the species: t. delpontei, t. dimidiata, t. guasayana, t. infestans, t. mazzotti, t. pallidipennis, t. patagonica, t. platensis, t. rubrovaria, t. sordida of the triatoma genus, and d. maximus and p. megistus of the dipatalogaster and panstrongylus genera respectively. the results show on one hand, qualitative differences in the protein composition, and on the other hand, similarity in the lipoprotein profiles. lipids, proteins, and carbohydrates did not show significant differences between species or/and stages.
Revisión de la subfamilia Triatominae (Hemiptera: Reduviidae) en Cuba
Hernández González,Yenin; González Broche,Raúl;
Boletín de Malariología y Salud Ambiental , 2006,
Abstract: the triatominae subfamily (hemiptera: reduviidae) contains the principal and potential chagas′disease vectors present in mexico, central america and south america and represents a serious threat for the public health of many countries of the region. with the aim of encouraging the study of these insects in our country, a bibliographical revision is presented about taxonomy, biology, domestication process, and medical importance of the cuban triatomine. four species of triatomine bugs have been so far reported in cuba: bolbodera scabrosa, triatoma rubrofasciata, nesotriatoma flavida and nesotriatoma bruneri, recent molecular studies have revalidated the genus nesotriatoma usinger 1944, represented in cuba by the species n. flavida and n. bruneri, which are separated by external characters of the body, the morphology of male genitalia and mitochondrial dna. evidence of the establishment of colonies of triatomine bugs does not exist in houses nor reports of autochthonous trypanosoma cruzi, because of that the risk of vectorial transmission is low, although it is of supreme importance in clinical and serological surveillance and on possible vectors.
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