Competition of Rhyzopertha dominica and Sitophilus oryzae on six sorghum varieties.
Competition
Grain infestation
Population growth
Primary colonizers
Sorghum
Journal
Environmental science and pollution research international
ISSN: 1614-7499
Titre abrégé: Environ Sci Pollut Res Int
Pays: Germany
ID NLM: 9441769
Informations de publication
Date de publication:
Nov 2023
Nov 2023
Historique:
received:
27
07
2023
accepted:
06
09
2023
medline:
8
11
2023
pubmed:
5
10
2023
entrez:
5
10
2023
Statut:
ppublish
Résumé
We tested the effect of simultaneous infestation by adults of the lesser grain borer, Rhyzopertha dominica (F.) and the rice weevil, Sitophilus oryzae (L.) on six sorghum varieties. For this purpose, vials containing sorghum and either each species alone or both species were placed at 30 °C and 65% relative humidity. After ten days, all parental adults were removed and the vials were returned to the same conditions. Five weeks later the vials were emptied, to record adult emergence, the percentage of insect damaged kernels (IDK), and frass weight. Our results indicated that progeny production capacity for both species was not affected by the simultaneous presence of R. dominica and S. oryzae, and that adult emergence was more of a variety- mediated parameter. Both species had previously shown similar preferences towards specific sorghum varieties. IDK and frass were higher in vials containing R. dominica alone rather than S. oryzae alone, but these indicators were not always related to progeny production. Specifically, the most and the least frass production was noted on Sumac and PE sorghum varieties for both species, respectively. When the two species were placed together in the same vial, the most frass production was noted in the Non-Waxy Burgundy and Sumac varieties. Our results suggest that varietal resistance in sorghum could be utilized to help reduce post-harvest infestations by S. oryzae and R. dominica.
Identifiants
pubmed: 37796352
doi: 10.1007/s11356-023-29807-9
pii: 10.1007/s11356-023-29807-9
pmc: PMC10625511
doi:
Substances chimiques
Insecticides
0
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
110805-110811Informations de copyright
© 2023. The Author(s).
Références
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