Show simple item record

dc.contributor.authorHansen, L.S.
dc.contributor.authorSkovgard, L.
dc.contributor.authorHell, K.
dc.identifier.citationHansen, L.S., Skovgård, H. & Hell, K. (2004). Life table study of Sitotroga cerealella (Lepidoptera: Gelichiidae), a strain from West Africa. Journal of Economic Entomology, 97(4), 1484-1490.
dc.description.abstractLife table studies for the Angoumois grain moth, Sitotroga cerealella (Olivier), a pest on stored maize, Zea mays L., in West Africa, were conducted as part of the expansion of a mathematical simulation model that has been developed for two pests of stored maize. The effects of four temperatures (20, 25, 30, and 35°C) and two relative humidity levels (44 and 80%) on developmental time, age-specific survivorship and fecundity, sex ratio, and intrinsic rate of natural increase (rm) of S. cerealella were investigated. Sex ratio was close to 1:1 at all temperatures and humidity. Minimum development time occurred close to 32°C and 80% RH for both males and females, and developmental time of females was significantly shorter than that of males. Immature survivorship was highest between 25 and 30°C and 80% RH and lowest at 35°C under both humidity conditions. A similar low level was found at 20°C and 44% RH. The greatest fecundity (124 eggs per female) occurred at 20°C, 80% RH. The maximum rm value was 0.086 d−1 at 30°C and 80% RH, but the growth rate declined dramatically at 35°C. If compared with the few other life table studies conducted on this species on maize in India and North America, some variation among the strains becomes evident. A common conclusion for the current study and previous ones is that optimal population development for S. cerealella occurs at ≈30°C and at high humidity.
dc.subjectSitotroga Cerealella
dc.subjectAngoumois Grain Moth
dc.subjectLife Tables
dc.titleLife table study of Sitotroga cerealella (Lepidoptera: Gelichiidae), a strain from West Africa
dc.typeJournal Article
cg.contributor.affiliationDanish Institute of Agricultural Sciences
cg.contributor.affiliationInternational Institute of Tropical Agriculture
cg.coverage.regionWest Africa
cg.isijournalISI Journal
cg.authorship.typesCGIAR and advanced research institute
cg.iitasubjectPests Of Plants
cg.iitasubjectPlant Health
cg.iitasubjectDisease Control
cg.accessibilitystatusLimited Access
cg.reviewstatusPeer Review

Files in this item


There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record