Alguns aspectos da biologia de Triatoma pseudomaculata Corrêa & Espínola, 1964, em condições de laboratório (Hemiptera:Reduviidae:Triatominae)

Abstract

Biology of

Biological aspects of crosses between Triatoma maculata (Erichson, 1848) and Triatoma pseudomaculata Corrêa & Espínola, 1964 (Hemiptera: Reduviidae)

“…Previous investigations on the biology of T. pseudomaculata have shown that the average incubation period is 18 days, at temperatures 28 ± 1°C and 80% relative humidity, blood fed weekly on pigeons (Gonçalves et al 1997). These results are in accordance with ours, where temperature and relative humidity were kept at 27 ± 1°C and 65 ± 5%, respectively, with an average egg hatching time of 17.2 days.…”

“…Besides maintenance conditions, slight differences in the biology of T. maculata and T. pseudomaculata shown here, in relation to previous studies (Gonçalves et al 1997), might be due to genetic variations among the populations used, and to the length of time that colonies had been kept under laboratory conditions.…”

Dynamics of evolution and resistance to starvation of Triatoma vitticeps (Stal 1859) (Reduviidae: Triatominae), submitted to two different regimens of food deprivation

“…On the other hand, Heitzmann-Fontenelle (1972) and Gonçalves et al (1997), both working with T. pseudomaculata Corrêa & Espínola, 1964, demonstrated the requirement for more than one feeding at each stage for the successful development of this species. The present results indicate that the percentage of molted nymphs varied from 39% to 75%, at 4th and 2nd stages, respectively (Table III).…”

Comparative biology of the two sister species of Triatominae (Hemiptera: Reduviidae)

“…Several papers involve studies related to the biology of T. pseudomaculata, a triatomine species with an epidemiological role 10,11,12,13,14 . In contrast, no readily available information exists concerning the biology of T. wygodzinskyi, which is an exclusively sylvatic vector.…”

“…In fact, the study conducted by Juarez (1970) 15 on the biological cycle of T. arthurneivai actually involves misidentified populations that are currently known as T. wygodzinskyi 7,16 . In most cases, the disparities between the conditions maintained in individual insectaries, the methodologies and statistical analyses complicate the comparison of different studies relating to the same species 11 . For example, the egg to adult life cycle showed an average duration of 255 days in this work, whereas it varied from 212 to 349 days according to other authors 11,14 .…”