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Digestive enzymes during development of Ceratitis capitata (Diptera:Tephritidae) and effects of SBTI on its digestive serine proteinase targets

The digestive system of Ceratitis capitata was characterized during its larval development and in the insect stage. Disaccharidases against maltose and sucrose were more evident in the 2nd and 3rd day of larval development and in the adult stage, respectively. Glycosil-hydrolyses with higher specifi...

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Published in:Insect biochemistry and molecular biology 2006-07, Vol.36 (7), p.561-569
Main Authors: Silva, Fátima C.B.L., Alcazar, Alonso, Macedo, Leonardo L.P., Oliveira, Adeliana S., Macedo, Francisco P., Abreu, Luiz R.D., Santos, Elizeu A., Sales, Mauricio P.
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container_issue 7
container_start_page 561
container_title Insect biochemistry and molecular biology
container_volume 36
creator Silva, Fátima C.B.L.
Alcazar, Alonso
Macedo, Leonardo L.P.
Oliveira, Adeliana S.
Macedo, Francisco P.
Abreu, Luiz R.D.
Santos, Elizeu A.
Sales, Mauricio P.
description The digestive system of Ceratitis capitata was characterized during its larval development and in the insect stage. Disaccharidases against maltose and sucrose were more evident in the 2nd and 3rd day of larval development and in the adult stage, respectively. Glycosil-hydrolyses with higher specific α-galactosidasic and β-galactosidasic activities were detected in the 2nd and 3rd day of the larval stage, respectively. Specific proteolytic activities against azocasein showed an increase in the 4th and 5th day of the larval stage and in the adult stage. Specific hemoglobin activities were constant between 2nd and 6th day of the larval stage. The larvae used mainly serine proteinases, such as trypsin/chymotrypsin, and the adult insects only chymotrypsin-like enzymes in their digestive process. Two serine proteinases were separated from zymogram between the 4th and 5th day of larval development and in the adult stage. Effect of soybean trypsin inhibitor (SBTI, a serine proteinase inhibitor) on development of C. capitata was examined by bioassay. C. capitata was susceptible to SBTI which affected larval mass at ED 50 3.01%.
doi_str_mv 10.1016/j.ibmb.2006.04.004
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1879-0240
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subjects Acid proteinases
Animals
Caseins - pharmacology
Ceratitis capitata
developmental stages
digestive enzymes
Diptera - enzymology
Diptera - growth & development
Disaccharidases
Electrophoresis, Polyacrylamide Gel
fruit flies
Glycoside Hydrolases - metabolism
insect development
mortality
SBTI
Serine Endopeptidases - metabolism
Serine proteinases
soybean trypsin inhibitor
Tephritidae
Trypsin Inhibitor, Kunitz Soybean - pharmacology
trypsin inhibitors
weight loss
title Digestive enzymes during development of Ceratitis capitata (Diptera:Tephritidae) and effects of SBTI on its digestive serine proteinase targets
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