Influência da temperatura e umidade na biologia de Rhodnius neglectus Lent, 1954 em laboratório (Hemiptera, Reduviidae,Triatominae) / Influence of the temperature and humidity on the biology of Rhodnius neglectus Lent, 1954, in laboratory conditions (Hemiptera, Reduviidae, Triatominae)

O objetivo do presente trabalho foi observar o desenvolvimento de R. neglectus em diferentes condições de temperatura e umidade. Três grupos foram formados:33/40 (33+/- 1ºC e 40% +/-5% UR), 33/70 (33+/- 1ºC e 70% +/-5% UR), e 28/70 (28+/- 1ºC e 70% +/-5% UR). Todos os grupos foram observados diariamente para avaliação do período de incubação dos ovos, período de desenvolvimento dos estádios ninfais, percentual de mortalidade por estádio, número de repastos realizados, e período de desenvolvimento da eclosão a muda imaginal. O desenvolvimento embrionário apresentou diferenças significativas em todos os tratamentos, o grupo 33/40 apresentou o menor período de incubação. O menor número de repastos foi observado no grupo 33/40 exceto para o primeiro estádio (grupo 28/70). O período de desenvolvimento ninfal foi significativamente reduzido no grupo 33/40; entretanto, o percentual de mortalidade deste grupo foi alto, e os insetos não conseguiram realizar a muda imaginal.

The objective of the present paper was to study the development of R. neglectus in the laboratory under different conditions of temperature and humidity. Three groups were prepared: 33/40 (33+/- 1 degree C and 40% +/-5% UR), 33/70 (33+/- 1 degree C and 70% +/-5% UR), and 28/70 (28+/- 1 degree C and 70% +/-5% UR). All these groups were observed daily to evaluate the eggs' incubation period, the development period of each instar nymph, the mortality rate of each stage, the frequency of feeding and the hatching - adult ecdysis period. The embryonic development showed significant differences between the treatment given, the group 33/40 presented the lowest incubation period. The lowest bloodmeals number was observed in the group 33/40 except for the first instar (group 28/70). The period of nymphal development was significantly reduced in the group 33/40, however, the mortality was high and the specimens did not reach the adult phase.

Atlas of Chagas disease vectors in the Americas

Habitats of Triatominae bugs are important from an epidemiological point of view. Each species is related to certain environmental conditions, and its significance as a vector for Trypanosoma cruzi is often linked to its proximity to human dwellings or the infestation of houses, corrals, pigeon or chicken coops, woodpiles, and/or other peridomiciliary sites. The authors of this chapter have agreed to provide a general list of references, mostly devoted either to those publications compiling the scattered bibliography or to some specific papers where a single species was studied, giving compiled bibliography added to the original research. Despite this bibliographical condensation, the list is long enough to provide a general idea about some basic references to each species

Atlas of Chagas disease vectors in the Americas

Authors have studied most of the known species of Triatominae with Scanning Electron Microscopy (SEM) JEOL and HITACHI S-500. They were able to photograph structures in these bugs belonging to the 5 known tribes. 12 of the 14 genera existing on the American Continent and Caribbean Islands, and 98 of the 111 recognized species of the subfamily. It was not possible to study either Bolbodera or Parabelminus with SEM