Fauna triatominae do Estado da Bahia Brasil III - notas sobre ecótopos silvestres e o gênero Psammolestes

Abstract

No estado da bahia na investigação de 531 biótopos silvestres para triatomíneos foram encontrados 12 exemplares de Triatoma lenti e Triatoma pessoai coletados em locas de mocós, e 1.043 exemplares de Psammolestes tertius coletados em ninhos de aves. É feita uma redescrição morfológica de P. tertius e mostrado a sua destribuição geográfica no Estado da Bahia.

Indicadores entomológicos de triatomíneos no Estado do Rio Grande do Norte, Brasil

“…The P. megistus species, despite being a highly dispersed agent in the Brazilian territory, with a recognized potential for infestation and colonization of households 21 and high levels of infection 21,44,45 , showed low density in the evaluated region, besides not having evidenced no positive species for T. cruzi 10,21 , differently from the State of Ceará and Bahia in the 1990s and the Federal District 10,13,46 . We would like to add that this was the only species among the ones found that did not have any nymph captured in the intradomestic environment.…”

“…The T. pseudomaculata species also showed infected captured specimens, although some studies consider that the risk for vector transmission through this species is low when compared to T. brasiliensis 41 due to its low conversion rate for metacyclic trypomastigotes 32,40,42 , the infecting form of vertebrates 32 . On the other hand, while some studies show a low natural rate of infection 13,43 , a survey carried out in the state of Bahia showed that all samples of T. pseudomaculata collected for seroprevalence responded positively to the T. cruzi test, which denotes the representativeness of this species in the transmission in regions where the presence of the vector is clear 10 .…”

“…After more than four decades of fighting Chagas' disease vector transmission in Brazil, the setting investigated still has a wide distribution of triatomines and is among the regions originally at risk for vector transmission, along the states of Alagoas, Bahia, the Federal District, Goiás, among others, a condition explained by the number of autochthonous and potentially vector species 7 , such as T. brasiliensis [4][5][6][7][8] and T. pseudomaculata 9 and the emergence of "new species", such as P. lutzi 10 , all of which are found in the field of this study.…”

Distribution of constitutive heterochromatin in two species of triatomines: Triatoma lenti Sherlock and Serafim (1967) and Triatoma sherlocki Papa, Jurberg, Carcavallo, Cerqueira & Barata (2002)

“…Triatoma lenti is an endemic species of triatomine present only in the Brazilian states of Bahia, Goiás, and Roraima (Gurgel-Gonçalves et al, 2012) and it was found to be infected by the protozoan Trypanosoma cruzi (Kinetoplastida: Trypanosomatidae) (Sherlock and Guitton, 1974). This triatomine is considered to be a potential vector of Chagas disease of secondary importance .…”

Karyotype and spermatogenesis in Triatoma lenti (Hemiptera: Triatominae), a potential Chagas vector

“…lenti is found only in Brazil and is endemic to Bahia and Goiás (Carcavallo et al, 1999), and according to Sherlock and Guitton (1974), it was found infected with the protozoan T. cruzi.…”