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Flight metabolism in Panstrongylus megistus (Hemiptera: Reduviidae): the role of carbohydrates and lipids [PDF]

Memorias Do Instituto Oswaldo Cruz, 2003
The metabolism of lipids and carbohydrates related to flight activity in Panstrongylus megistus was investigated. Insects were subjected to different times of flight under laboratory conditions and changes in total lipids, lipophorin density and carbohydrates were followed in the hemolymph.
Lilian E Canavoso, Edilberto R Rubiolo
exaly   +5 more sources

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Kazal-type inhibitors in the stomach of Panstrongylus megistus (Triatominae, Reduviidae)

Insect Biochemistry and Molecular Biology, 2010
Triatomines inhibit the clotting of ingested blood in the stomach (anterior midgut). After verifying this phenomenon in Panstrongylus megistus using coagulation assays, a full-length cDNA encoding a Kazal-like inhibitor was amplified by PCR. The open reading frame encodes a putative precursor protein of 412 amino acid residues, which was named PmStKaz ...
Bettina Warscheid, G A Schaub, Carsten Balczun   +2 more
exaly   +4 more sources

Comparative aspects of xanthine dehydrogenase activity of Panstrongylus megistus

Comparative Biochemistry and Physiology Part B: Comparative Biochemistry, 1978
Abstract 1. 1. Organ extracts from Panstrongylus megistus were assayed for xanthine dehydrogenase (E.C. 1.2.1.37) and xanthine oxidase (E.C. 1.2.3.2) activities. 2. 2. XDH was present in the fat body, Malpighian tubes, testis and ovary, higher levels being found in the fat body. XO activity was practically absent. 3. 3.
Edna Riemke, Emilio Mitidieri, Ottília E. Affonso, Luiz P. Ribiero   +3 more
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Octosporea carloschagasi n. sp., a microsporidian associate of Trypanosoma cruzi in Panstrongylus megistus

Zeitschrift Für Parasitenkunde (Berlin, Germany), 1972
Some protozoan forms from Panstrongylus megistus that Chagas had incorporated into his original description of Trypanosoma cruzi are compared with schizogonic and sporogonic stages of the microsporidian Octosporea muscaedomesticae. On the basis of the evidence presented O. carloschagasi n. sp. is described.
exaly   +3 more sources

Aggregation behaviour in Panstrongylus megistus and Triatoma infestans: inter and intraspecific responses

Acta Tropica, 2002
We tested the aggregation response to inter and intraspecific chemical signals in Panstrongylus megistus and Triatoma infestans. As previously described for T. infestans, larvae of P. megistus significantly aggregated on papers impregnated with their own excrement and on papers marked with cuticular substances deposited on surfaces on which these ...
H H R, Pires, M G, Lorenzo, L, Diotaiuti, C R, Lazzari, A N, Lorenzo Figueiras   +4 more
openaire   +2 more sources

Anticoagulant activity of Triatoma infestans and Panstrongylus megistus saliva (Hemiptera/Triatominae)

Acta Tropica, 1996
Salivary gland extract of Triatoma infestans prolonged thrombin time, prothrombin time, and activated partial thromboplastin time, while salivary gland extract of Panstrongylus megistus delayed thrombin time and activated partial thromboplastin time. However, saliva of P.
M H, Pereira, M E, Souza, A P, Vargas, M S, Martins, C M, Penido, L, Diotaiuti   +5 more
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Blockage of Embryonic Development in Panstrongylus Megistus by Juvenile Hormone Analogues

International Journal of Tropical Insect Science, 1984
The effect of five juvenile hormone analogues (JHAs) on the embryonic development of Panstrongylus megistus, a vector of Chagas’ disease, was studied. Four compounds, N-(2,5-dich-loropheny])-3,7-dimethyl-2-6-octadienylamine, N-(5-chloro-2-rnethylphenyl)-3,7-dimethyl-2,6-octadienylamine, 3,7-dimethyl-6,7-epoxy-1-(3,4-methylenedioxyphenoxy)-2-nonene, and
A. M. Oliveira Filho, R. Pinchin, M. J. Figueiredo, C. A. Muller   +3 more
openaire   +1 more source

Experimentally Induced Heat-Shock Tolerance inPanstrongylus megistus(Hemiptera: Reduviidae)

Journal of Medical Entomology, 2001
The survival and molting incidence of fifth-instar nymphs of Panstrongylus megistus (Burmeister, 1835), a vector of Chagas' disease, were investigated following sequential heat shocks in which a mild shock (35 or 40 degrees C, 1 h) preceded a more drastic one (40 degrees C, 12 h). The shocks were separated by 8-, 18-, 24-, or 72-h periods at 28 degrees
S L, Garcia, M L, Mello, N L, Garcia, V L, Rodrigues   +3 more
openaire   +2 more sources

Vesicular inclusions in the nuclei of epithelial cells of Malpighian tubes of the hemipteran,Panstrongylus megistus

Experientia, 1978
Vesicular inclusions observed in Malpighian tubes of hemipterans have been associated with a virus-like infection rather than a lysosomal-type activity, which is the case of the identical cytoplasmic structures.
H, Dolder, M L, Mello
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Metabolic pathways for dietary lipids in the midgut of hematophagous Panstrongylus megistus (Hemiptera: Reduviidae)

Insect Biochemistry and Molecular Biology, 2004
The metabolism of dietary lipids in the anterior midgut of Panstrongylus megistus during blood digestion was studied. Fifth instar nymphs were fed a blood meal containing 7.1 +/- 0.4 mg of lipids, consisting mainly of triacylglycerol (TAG), and completed the overall process of digestion in about 20 days. Lipolysis of TAG and pathways for diacylglycerol
Lilián E, Canavoso, Silvia, Frede, Edilberto R, Rubiolo   +2 more
openaire   +2 more sources