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- W2076372302 abstract "Abstract 1. 1. Cuticular hydrocarbons of adults of the rice weevil, Sitophilus oryzae (L.), maize weevil, S. zeamais Motschulsky and granary weevil, S. granarius (L.), were analyzed by gas chromatography and combined gas chromatography-mass spectrometry. n-Alkanes, methylbranched alkanes, n-alkenes, n-alkadienes and traces of n-alkatrienes were detected in each species. 2. 2. n-Alkanes composed 27.0, 26.6 and 43.3% of the hydrocarbons in S. oryzae, S. zeamais, and S. granarius, respectively. Even and odd chain components from C16 to C39 were detected in each species. n-Heptacosane, n-nonacosane, and n-hentriacontane were major components. 3. 3. Branched-chain alkanes were minor components (0.8–2.5%) of the total hydrocarbons in each species. Internally- and terminally-branched monomethylalkanes and internally-branched dimethylalkanes were identified. Internally branched dimethylalkanes with 11 (9,21-dimethyltritriacontane and 11,23-dimethylpentatriacontane) and 13 (11,25-dimethylheptatriacontane) methylenes between the branch points were identified in S. zeamais. 4. 4. n-Alkenes (C27:1 to C47:1) made up 18.5, 15.1 and 27.6% of the hydrocarbons of S. oryzae, S. zeamais, and S. granarius, respectively. n-Hentriacontene and n-tritriacontene were predominant components. Double bond positions were located primarily at 7–8 and 9–10. 5. 5. n-Alkadienes (C31:2 to C47:2) made up 53.7, 57.2 and 26.6% of the hydrocarbons of S. oryzae, S. zeamais and S. granarius, respectively. n-Tritriacontadiene, n-pentatriacontadiene and n-heptatriacontadiene were predominant components. Each GLC peak was an isomeric mixture. 6. 6. Hydrocarbon components of S. oryzae and S. zeamais were quantitatively and qualitatively very similar. However, significant differences were found between these two species and S. granarius. The use of cuticular hydrocarbons as chemotaxonomic markers in Coleoptera is briefly discussed." @default.
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- W2076372302 date "1984-01-01" @default.
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- W2076372302 title "Olefins as major components of epicuticular lipids of three Sitophilus weevils" @default.
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- W2076372302 doi "https://doi.org/10.1016/0305-0491(84)90327-4" @default.
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