Triatomíneos da Amazônia. Morfometria do ovo de Rhodnius brethesi Matta, 1919 (Hemiptera: Triatominae)

Abstract

Resumo O autor mostra pela primeira vez a morfometria do ovo de Rhodnius brethesi e apresenta algumas comparações merísticas com outras espécies do mesmo gênero.

Morphobiological aspects of Rhodnius brethesi Matta, 1919 (Hemiptera:Reduviidae) from the Upper and Middle Negro River, Amazon region of Brazil: I - scanning electron microscopy

“…The first descriptions of the external morphology of R. brethesi using optical microscopy were based on adult specimens (Matta 1919(Matta , 1922. The eggs, nymph stages and life cycle were described by Mascarenhas in 1982Mascarenhas in , 1987Mascarenhas in , and 1990 Other studies related to the external morphology, including in relation to the male and female genitalia, were performed using optical microscopy by Lent (1948), Lent and Jurberg (1969), and Lent and Wygodzinky (1979).…”

“…In 1922, Matta drew attention to the fact that the palm fiber gatherers were suffering bites from these insects. This was due to the fact that these insects habitually live among the fibers of these palm trees: they are popularly known in the region as "piassaba lice" (Mascarenhas 1990(Mascarenhas , 1991. Coura et al (1994) also conducted field studies in the municipality of Barcelos and verified the attacking behavior of R. brethesi.…”

“…The first descriptions of the external morphology of R. brethesi using optical microscopy were based on adult specimens (Matta 1919(Matta , 1922. The eggs, nymph stages and life cycle were described by Mascarenhas in 1982Mascarenhas in , 1987Mascarenhas in , and 1990 Other studies related to the external morphology, including in relation to the male and female genitalia, were performed using optical microscopy by Lent (1948), Lent and Jurberg (1969), and Lent and Wygodzinky (1979).Structures like the stridulatory sulcus, buccula and rostrum were highlighted by Carcavallo et al (1996), Silva et al (2003), Ferro et al (1997Ferro et al ( , 1998 Preliminary studies on the external morphology of R. brethesi at an ultrastructural level utilizing scanning electron microscopy have been performed on the structures of the head, thorax and feet of nymphs and adults (Ferro et al 1997, Andrade et al 2002.With aim of obtaining better knowledge of R. brethesi, a morphological analysis was performed on the head (anterior ocular region, ocular-ocellar region, antennae, buccula and rostrum), thorax (stridulatory sulcus) and feet (apex of the tibia, spongy fossette, ctenidium, and tarsus) of adults of this species. …”

Ecological diversity of Trypanosoma cruzi transmission in the Amazon basin. The main scenaries in the Brazilian Amazon

“…4) (Da Matta, 1919;Mascarenhas, B.M., 1990Mascarenhas, B.M., ,1991Coura et al 1994a), which maintains a wild cycle with marsupials, rodents, primates, carnivores and bats (Table III). However, the piassava fiber gatherers also hunt these reservoirs as a food source for protein, thereby reducing the triatomines' blood meal source.…”

Hematophagous Bugs (Reduviidae, Triatominae)

“…In 1926 Uribe reported the survival of a 3rd instar nymph of Rhodnius prolixus for 5 months. The literature shows discrepancies in the survival periods of various species studied according to the methodology employed, which can show variation in the feeding sources, relative humidity, and temperature, as well as the stress the insect suffers during handling (Wood 1951 ;Friend and Smith 1977 ;Mascarenhas 1990 ;Galvão et al 2001a ;Dias-Lima andSherlock 2002 , Martínez-Ibarra et al 2003 ). Resistance to fasting can vary between and within species.…”