Record Details

Effect of temperature on the survival and infectivity of Pseudotheraptus devastans vector

CGSpace

View Archive Info
 
 
Field Value
 
Title Effect of temperature on the survival and infectivity of Pseudotheraptus devastans vector
 
Creator Fokunang, C.
Dixon, A.
Ikotun, T.
 
Subject CASSAVA
BUGS
COREIDAE
HETEROPTERA
VECTORS
 
Description The aim of this study was to investigate under a controlled environment, the effect of temperature on the survival and infectivity of Pseudotheraptus devastans Distant, a cassava anthracnose disease vector. The insect P. devastans was collected from young cassava (Manihot esculenta Crantz) field plots, at the International Institute of Tropical Agriculture, (IITA), Ibadan, Nigeria. A mixture of the different developmental stages of eggs, first to fifth instar nymphs, and adults, were incubated in controlled environment chambers, under various constant temperatures of: 15, 17, 22, 25, 27, 30, and 35°C. Relative humidity at different temperature conditions were recorded and maintained at 90%, 85%, 80%, 75%, 70%, 65%, and 60%, respectively. A significant increase in insect survival was observed between 22 and 27°C temperature conditions while a significant decrease in survival was observed at 15°C and above 30°C. Lesion number, lesion diameter and infectivity among the insect stages varied as a function of temperature and relative humidity. Infectivity was highest at 22–25°C maintained at 75–80% RH and lowest at 15°C and above 30°C maintained respectively, at 65% RH and 90% RH. There was considerable low vector infectivity due to low survival of the insects at extreme temperatures.
Peer Review
 
Date 2019-08-21T14:12:57Z
2019-08-21T14:12:57Z
2004
 
Type Journal Article
 
Identifier Fokunang, C.N., Dixon, A. G. & Ikotun, T. (2004). Effect of temperature on the survival and infectivity of Pseudotheraptus devastans vector. Mycopathologia, 158(3), 385.
0301-486X
https://hdl.handle.net/10568/103325
 
Language en