Concentrations of substituted p-benzoquinones and 1-Pentadecene (cas 13360-61-7) in the flour beetles Tribolium madens (charp.) and Tribolium brevicornis (lec.) (coleoptera, tenebrionidae)

Add time:07/26/2019    Source:sciencedirect.com

1. 2-Methyl-1,4-benzoquinone (MBQ), 2-ethyl-1,4-benzoquinone (EBQ) and 1-Pentadecene (cas 13360-61-7) (PD) were identified in Tribolium madens and T. brevicornis by gas-liquid chromatography.2. MBQ, EBQ and PD were extremely low in newly eclosed adults (<2.5 μg/insect). The levels of all three compounds increased with age until 30–50 days after eclosion, after which time the concentrations were maintained or increased at a lower rate.3. Mean levels of 152–178 μg substituted p-benzoquinones and 59–63 μg PD were found in 50–75 day adult T. madens. T. brevicornis 50–75 day adults contained mean levels of 228–255 μg substituted p-benzoquinones and 105–121 μg PD.4. The odoriferous secretion of 50–75 day adults has a p-benzoquinone composition of 32% MBQ and 68% EBQ for T. madens and 36% MBQ and 64% EBQ for T. brevicornis.

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