Instituto de Investigaciones Bioquímicas de La Plata (CCT La Plata CONICET-UNLP), Facultad de Ciencias Médicas, 1900 La Plata, Argentina.
Comp Biochem Physiol B Biochem Mol Biol. 2009 Dec;154(4):381-6. doi: 10.1016/j.cbpb.2009.08.001. Epub 2009 Aug 15.
Many species of tenebrionids produce and secrete a defensive volatile blend containing mainly benzoquinones and alkenes. In this study we characterized the volatile organic compounds (VOC) of the beetle Ulomoides dermestoides (Coleoptera: Tenebrionidae). Solid phase microextraction (SPME) coupled to capillary gas chromatography-mass spectrometry (CGC-MS) analysis was used to identify methyl-1,4-benzoquinone (MBQ), ethyl-1,4-benzoquinone (EBQ), 1-tridecene (C(13:1)), and 1-pentadecene (C(15:1)), representing more than 90% of the volatile blend. We also used CGC-MS to analyze the epicuticular hydrocarbons of U. dermestoides. Saturated, unsaturated, and branched structures with chain lengths ranging from 13 to 43 carbons were detected. n-pentacosane (C(25:0)) and 9,11-pentacosadiene (9,11-C(25:2)) were the most abundant components, representing more than 40% of the cuticular hydrocarbons.
许多种拟步甲科昆虫会产生和分泌一种防御性挥发性混合物，主要包含苯醌和烯烃。在这项研究中，我们对皮蠹 Ulomoides dermestoides（鞘翅目：拟步甲科）的挥发性有机化合物（VOC）进行了表征。采用固相微萃取（SPME）与毛细管气相色谱-质谱联用（CGC-MS）分析方法，鉴定出甲基-1,4-苯醌（MBQ）、乙基-1,4-苯醌（EBQ）、1-十三烯（C(13:1)）和 1-十五烯（C(15:1)），它们占挥发性混合物的 90%以上。我们还使用 CGC-MS 分析了 U. dermestoides 的表皮碳氢化合物。检测到链长从 13 到 43 个碳原子的饱和、不饱和和支链结构。正二十五烷（C(25:0)）和 9,11-二十五碳二烯（9,11-C(25:2)）是最丰富的成分，占表皮碳氢化合物的 40%以上。
