Rice weevil, Sitophilus oryzae, a cosmopolitan pest of stored cereals (including wheat and rice) is moved around inadvertently through global cereal trade. In this study, we consider the effect of strain origin and host food on the tolerance of S. oryzae to dichlorvos, a common insecticide used to protect stored grains in Nigeria. Three geographical strains of S. oryzae (Nigeria, Trinidad and Morocco) were bred separately on Ofada rice (a Nigerian local rice variety) and wheat and then exposed to dichlorvos. The data were analyzed using analysis of variance and General Linear Model, probit analysis was used to estimate LC50 and LC95 values. The strain by food combinations varied significantly in their tolerance to dichlorvos. Overall, the Nigerian strain was the least tolerant. Nonetheless, for all strains novel host food influenced their tolerance positively; wheat in the case of the Nigerian strain and Ofada rice for the exotic strains. The results were discussed in terms of varying body size among the strains and physiological effect when insects find themselves in novel environments. The risk posed to local Nigerian rice varieties is considered through the import of exotic strains of S. oryzae, especially when entering the country on wheat.
| Published in | American Journal of Entomology (Volume 3, Issue 2) |
| DOI | 10.11648/j.aje.20190302.11 |
| Page(s) | 30-35 |
| Creative Commons |
This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited. |
| Copyright |
Copyright © The Author(s), 2019. Published by Science Publishing Group |
DDVP, Ofada Rice, Exotic Strain, Insecticide Tolerance, Cereal Import, Novel Environment, Pest Management
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APA Style
Olajire Ayodele Gbaye, Emmanuel Ayobami Oyeniyi, Muyideen Folorunsho, Graham Holloway. (2019). Impact of a Local Nigerian Rice Variety and Wheat on the Tolerance of Geographical Strains of Sitophilus oryzae to Dichlorvos. American Journal of Entomology, 3(2), 30-35. https://doi.org/10.11648/j.aje.20190302.11
ACS Style
Olajire Ayodele Gbaye; Emmanuel Ayobami Oyeniyi; Muyideen Folorunsho; Graham Holloway. Impact of a Local Nigerian Rice Variety and Wheat on the Tolerance of Geographical Strains of Sitophilus oryzae to Dichlorvos. Am. J. Entomol. 2019, 3(2), 30-35. doi: 10.11648/j.aje.20190302.11
AMA Style
Olajire Ayodele Gbaye, Emmanuel Ayobami Oyeniyi, Muyideen Folorunsho, Graham Holloway. Impact of a Local Nigerian Rice Variety and Wheat on the Tolerance of Geographical Strains of Sitophilus oryzae to Dichlorvos. Am J Entomol. 2019;3(2):30-35. doi: 10.11648/j.aje.20190302.11
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Download@article{10.11648/j.aje.20190302.11,
author = {Olajire Ayodele Gbaye and Emmanuel Ayobami Oyeniyi and Muyideen Folorunsho and Graham Holloway},
title = {Impact of a Local Nigerian Rice Variety and Wheat on the Tolerance of Geographical Strains of Sitophilus oryzae to Dichlorvos},
journal = {American Journal of Entomology},
volume = {3},
number = {2},
pages = {30-35},
doi = {10.11648/j.aje.20190302.11},
url = {https://doi.org/10.11648/j.aje.20190302.11},
eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.aje.20190302.11},
abstract = {Rice weevil, Sitophilus oryzae, a cosmopolitan pest of stored cereals (including wheat and rice) is moved around inadvertently through global cereal trade. In this study, we consider the effect of strain origin and host food on the tolerance of S. oryzae to dichlorvos, a common insecticide used to protect stored grains in Nigeria. Three geographical strains of S. oryzae (Nigeria, Trinidad and Morocco) were bred separately on Ofada rice (a Nigerian local rice variety) and wheat and then exposed to dichlorvos. The data were analyzed using analysis of variance and General Linear Model, probit analysis was used to estimate LC50 and LC95 values. The strain by food combinations varied significantly in their tolerance to dichlorvos. Overall, the Nigerian strain was the least tolerant. Nonetheless, for all strains novel host food influenced their tolerance positively; wheat in the case of the Nigerian strain and Ofada rice for the exotic strains. The results were discussed in terms of varying body size among the strains and physiological effect when insects find themselves in novel environments. The risk posed to local Nigerian rice varieties is considered through the import of exotic strains of S. oryzae, especially when entering the country on wheat.},
year = {2019}
}
TY - JOUR T1 - Impact of a Local Nigerian Rice Variety and Wheat on the Tolerance of Geographical Strains of Sitophilus oryzae to Dichlorvos AU - Olajire Ayodele Gbaye AU - Emmanuel Ayobami Oyeniyi AU - Muyideen Folorunsho AU - Graham Holloway Y1 - 2019/06/10 PY - 2019 N1 - https://doi.org/10.11648/j.aje.20190302.11 DO - 10.11648/j.aje.20190302.11 T2 - American Journal of Entomology JF - American Journal of Entomology JO - American Journal of Entomology SP - 30 EP - 35 PB - Science Publishing Group SN - 2640-0537 UR - https://doi.org/10.11648/j.aje.20190302.11 AB - Rice weevil, Sitophilus oryzae, a cosmopolitan pest of stored cereals (including wheat and rice) is moved around inadvertently through global cereal trade. In this study, we consider the effect of strain origin and host food on the tolerance of S. oryzae to dichlorvos, a common insecticide used to protect stored grains in Nigeria. Three geographical strains of S. oryzae (Nigeria, Trinidad and Morocco) were bred separately on Ofada rice (a Nigerian local rice variety) and wheat and then exposed to dichlorvos. The data were analyzed using analysis of variance and General Linear Model, probit analysis was used to estimate LC50 and LC95 values. The strain by food combinations varied significantly in their tolerance to dichlorvos. Overall, the Nigerian strain was the least tolerant. Nonetheless, for all strains novel host food influenced their tolerance positively; wheat in the case of the Nigerian strain and Ofada rice for the exotic strains. The results were discussed in terms of varying body size among the strains and physiological effect when insects find themselves in novel environments. The risk posed to local Nigerian rice varieties is considered through the import of exotic strains of S. oryzae, especially when entering the country on wheat. VL - 3 IS - 2 ER -
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