Results 181 to 190 of about 9,381 (218)

Ecdysone, juvenile hormone and oögenesis in Rhodnius prolixus

Journal of Insect Physiology, 1979
Oviposition and oogenesis can be inhibited in female Rhodnius prolixus by ecdysone given by the digestive tract. The inhibition is dose-dependent, and doses higher than 4.0 ng ecdysone/mg body weight drastically reduce the size and shape of the whole ovaries.
M L, Garcia, R P, Mello, E S, Garcia
openaire   +2 more sources

Salivary thiol oxidase activity of Rhodnius prolixus

Insect Biochemistry and Molecular Biology, 1996
Cysteine and other thiol compounds can accelerate the unloading of nitric oxide (NO) from salivary nitrosyl-nitrophorins of the blood sucking bug Rhodnius prolixus. The dependence of NO unloading on cysteine concentration is biphasic, showing a maximum between 0.5 and 1 mM cysteine.
openaire   +2 more sources

Hydrocarbons of Rhodnius prolixus, a Chagas disease vector

Comparative Biochemistry and Physiology Part B: Biochemistry and Molecular Biology, 2001
The surface hydrocarbons of the blood-sucking insect, Rhodnius prolixus, a major Chagas disease vector in Venezuela, Colombia and Central America, were characterized by capillary gas chromatography coupled to mass spectrometry (CGC-MS). A total of 54 single or multicomponent peaks of saturated, straight-chain and methyl-branched hydrocarbons were ...
P, Juárez, G J, Blomquist, C J, Schofield   +2 more
openaire   +2 more sources

Injury metabolism in an insect, Rhodnius prolixus

Journal of Insect Physiology, 1970
Abstract Injury of Rhodnius larvae, in which growth and development are arrested by decapitation 1 day after feeding, results in an increase in the rate of oxygen consumption to levels characteristic of fed larvae in which these processes are not interfered with. This increase occurs in the period 2 to 5 days after wounding.
openaire   +2 more sources

THE GORGING RESPONSE IN RHODNIUS PROLIXUS STĂHL

Canadian Journal of Zoology, 1965
Rhodnius prolixus nymphs confined in an artificial feeding apparatus could be induced to gorge on 0.15 M NaCl solutions at pH 7.0 containing 10−3 M concentrations of chemicals having phosphate bonds of high energy release. The di- and tri-phosphates of adenosine, guanine, inosine, cytosine, and uridine all showed high gorging factor activity.
openaire   +2 more sources

Salivary heme proteins distinguish Rhodnius prolixus from Rhodnius robustus (Hemiptera: Reduviidae: Triatominae)

Acta Tropica, 1998
Rhodnius prolixus interpopulation variability was studied based on a new approach using salivary heme proteins (nitrophorins) electrophoresis in starch gel. We compared salivary proteins profiles of R. prolixus from three different laboratory colonies from Honduras, Venezuela, Brazil and Rhodnius robustus from Venezuela, constructing a UPGMA.
R P, Soares, N F, Gontijo, A J, Romanha, L, Diotaiuti, M H, Pereira   +4 more
openaire   +2 more sources

Insulin-like immunoreactivity and molting in Rhodnius prolixus

General and Comparative Endocrinology, 1992
Two prominent cells were observed when fifth stage Rhodnius female larval brains were stained with anti-insulin serum. The staining intensity of these cells varied during the instar, being lowest on Day 1 and Days 5 and 6 after feeding. Injection of anti-insulin serum into 5th stage larvae immediately after feeding and on Days 4 and 5 in females and on
V M, Sevala, V L, Sevala, B G, Loughton, K G, Davey   +3 more
openaire   +2 more sources

Trypanosoma rangeli: Effect on excretion in Rhodnius prolixus

Journal of Invertebrate Pathology, 1971
Abstract Excretion is severely reduced in Rhodnius prolixus infected with Trypanosoma rangeli , particularly in those bugs with hemocoelic infections. Several factors probably contribute to this reduction: tissue damage, lack of diuretic hormone or the presence of a chemical inhibitor in the hemolymph, and changes in its osmotic pressure.
openaire   +2 more sources

Lipid metabolism in Rhodnius prolixus : Lessons from the genome

Gene, 2017
The kissing bug Rhodnius prolixus is both an important vector of Chagas' disease and an interesting model for investigation into the field of physiology, including lipid metabolism. The publication of this insect genome will bring a huge amount of new molecular biology data to be used in future experiments.
David Majerowicz, Gustavo M. Calderón-Fernández, Michele Alves-Bezerra, Iron F. De Paula, Lívia S. Cardoso, M. Patricia Juárez, Georgia C. Atella, Katia C. Gondim   +7 more
openaire   +3 more sources

The Later Embryology of Rhodnius prolixus

Journal of Cell Science, 1936
ABSTRACT The development of the external features of the embryo from the time at which the germ-layers are laid down until hatching is described. The fate of the embryonic membrane is followed, and the formation of a ‘cuticular’ layer round the whole embryo produced by the glands which result from the modification of the first abdominal ...
openaire   +1 more source