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| Otálora-Luna,Fernando; Pérez-Sánchez,Antonio J; Sandoval,Claudia; Aldana,Elis. |
| All members of Triatominae subfamily (Heteroptera: Reduviidae), potential vectors of Trypanosoma cruzi etiologic agent of the Chagas disease, feed on blood. Through evolution, these bugs have fixed special morphological, physiological, and behavioral aptations (adaptations and exaptations) adequate to feed on blood. Phylogeny suggests that triatomines evolved from predator reduvids which in turn descended from phytophagous hemipterans. Some pleisiomorphic traits developed by the reduvid ancestors of the triatomines facilitated and modeled hematophagy in these insects. Among them, mouthparts, saliva composition, enzymes, and digestive symbionts are the most noticeable. However, the decisive step that allowed the shift from predation to hematophagy was a... |
| Tipo: Journal article |
Palavras-chave: Latin America; Chagas' disease; Phylogeny; Blood-sucking habit; Triatomines. |
| Ano: 2015 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2015000100004 |
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| Atella,Georgia C.; Gondim,Katia C.; Machado,Ednildo A.; Medeiros,Marcelo N.; Silva-Neto,Mário A.C.; Masuda,Hatisaburo. |
| In triatomines, as well as in other insects, accumulation of yolk is a process in which an extra-ovarian tissue, the fat body, produces yolk proteins that are packed in the egg. The main protein, synthesized by the fat body, which is accumulated inside the oocyte, is vitellogenin. This process is also known as vitellogenesis. There are growing evidences in triatomines that besides fat body the ovary also produces yolk proteins. The way these yolk proteins enter the oocyte will be discussed. Yolk is a complex material composed of proteins, lipids, carbohydrates and other minor components which are packed inside the oocyte in an organized manner. Fertilization triggers embryogenesis, a process where an embryo will develop. During embryogenesis the yolk will... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Oogenesis; Vitellogenesis; Embryogenesis; Triatomines; Rhodnius prolixus. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652005000300005 |
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| Kopp,Rogério Luiz; Thomaz-Soccol,Vanete; Klisiowicz,Débora do Rocio; Membrive,Norberto; Barata,José Maria Soares; Jurberg,José; Steindel,Mário; Kopp,Denize Cristina Trevisan; Castro,Edilene Alcântara de; Luz,Ennio. |
| Panstrongylus megistus is an important Chagas Disease vector and is said to be one of the species that might replace Triatoma infestans as the main vector of that disease in Brazil. The different degrees of P. megistus domiciliation in Brazil and its epidemiological relevance draw forth the need for the development of genetic studies that make it possible to analyze and understand the interchange of individual and gene fluxes among different populations. Thus, the present work aimed at studying the genetic variability of P. megistus in the State of Paraná - south of Brazil- and at comparing it with populations of the same species from five other states in Brazil (SP, MG, SC, RS, SE). In order to attain the proposed objective, 25 populations were studied... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Panstrongylus megistus; Isoenzymes; Genetic variability; Triatomines. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000200012 |
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| Moraes,Aurea Maria Lage de; Junqueira,Angela Cristina Vieira; Celano,Valéria; Costa,Gisela Lara da; Coura,José Rodrigues. |
| This paper reports a study on the mycobiota in the digestive tract of four important species of triatomines: Rhodnius prolixus, R. neglectus, Diptelanogaster maximus and Panstrongylus megistus. The digestive tracts of 90 adults and 425 nymphs of these four triatomine species were studied and 365 fungal strains were isolated. The genera with the greatest number of species were Aspergillus, Penicillium (14 species in each genus), Acremonium and Cladosporium (three species in each genus), and the most frequent species, in decreasing order, were Aspergillus awamori, Penicillium corylophilum, Cladosporium herbarum and Aspergillus niger. It was concluded that, among the isolated fungi, Aspergillus niger and Penicillium corylophilum might be part of the natural... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aspergillus spp; Fungi; Insect's digestive tract; Mycoflora; Penicillium spp; Triatomines. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822004000300003 |
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