Life table study of Sitotroga cerealella (Lepidoptera: Gelichiidae), a strain from West Africa
Life 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...
| Autores principales: | , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
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Oxford University Press
2004
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| Acceso en línea: | https://hdl.handle.net/10568/103367 |
| _version_ | 1855531064742641664 |
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| author | Hansen, L.S. Skovgard, L. Hell, K. |
| author_browse | Hansen, L.S. Hell, K. Skovgard, L. |
| author_facet | Hansen, L.S. Skovgard, L. Hell, K. |
| author_sort | Hansen, L.S. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Life 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. |
| format | Journal Article |
| id | CGSpace103367 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2004 |
| publishDateRange | 2004 |
| publishDateSort | 2004 |
| publisher | Oxford University Press |
| publisherStr | Oxford University Press |
| record_format | dspace |
| spelling | CGSpace1033672024-05-15T05:11:52Z Life table study of Sitotroga cerealella (Lepidoptera: Gelichiidae), a strain from West Africa Hansen, L.S. Skovgard, L. Hell, K. sitotroga cerealella angoumois grain moth life tables maize Life 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. 2004-08-01 2019-08-21T14:13:03Z 2019-08-21T14:13:03Z Journal Article https://hdl.handle.net/10568/103367 en Limited Access Oxford University Press Hansen, 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. |
| spellingShingle | sitotroga cerealella angoumois grain moth life tables maize Hansen, L.S. Skovgard, L. Hell, K. Life table study of Sitotroga cerealella (Lepidoptera: Gelichiidae), a strain from West Africa |
| title | Life table study of Sitotroga cerealella (Lepidoptera: Gelichiidae), a strain from West Africa |
| title_full | Life table study of Sitotroga cerealella (Lepidoptera: Gelichiidae), a strain from West Africa |
| title_fullStr | Life table study of Sitotroga cerealella (Lepidoptera: Gelichiidae), a strain from West Africa |
| title_full_unstemmed | Life table study of Sitotroga cerealella (Lepidoptera: Gelichiidae), a strain from West Africa |
| title_short | Life table study of Sitotroga cerealella (Lepidoptera: Gelichiidae), a strain from West Africa |
| title_sort | life table study of sitotroga cerealella lepidoptera gelichiidae a strain from west africa |
| topic | sitotroga cerealella angoumois grain moth life tables maize |
| url | https://hdl.handle.net/10568/103367 |
| work_keys_str_mv | AT hansenls lifetablestudyofsitotrogacerealellalepidopteragelichiidaeastrainfromwestafrica AT skovgardl lifetablestudyofsitotrogacerealellalepidopteragelichiidaeastrainfromwestafrica AT hellk lifetablestudyofsitotrogacerealellalepidopteragelichiidaeastrainfromwestafrica |