Page Marion, Nelson Lori J, Forschler Brian T, Haverty Michael I
Pacific Southwest Research Station, Forest Service, US Department of Agriculture, P.O. Box 245, Berkeley, CA 94701, USA.
Comp Biochem Physiol B Biochem Mol Biol. 2002 Mar;131(3):305-24. doi: 10.1016/s1096-4959(01)00466-3.
Cuticular hydrocarbon mixtures can be used to discriminate insect taxa. They have utility for determining phylogenetic relationships where they are independent characters with discrete states and represent a hierarchical distribution of shared, derived characters. We report inferred degrees of relatedness among the chemical phenotypes of Reticulitermes from PAUP (phylogenetic analysis using parsimony) analyses of cuticular hydrocarbon characters. One hundred and forty-one Reticulitermes colonies collected from California, Georgia, New Mexico, Arizona and Nevada were used. Initial maximum parsimony analyses sorted the 141 colonies into 26 chemical phenotypes. Subsequent analyses, using the ancestral species Coptotermes formosanus and Heterotermes sp. as outgroups, sorted Reticulitermes taxa into three major lineages, each characterized by a different set of dominant methyl-branched or unsaturated hydrocarbon components. Reticulitermes in lineage I have cuticular hydrocarbon mixtures with a preponderance of internally branched monomethylalkanes and 11,15-dimethylalkanes. Those in lineage II are defined by a preponderance of 5-methylalkanes and 5,17-dimethylalkanes. Taxa in lineage III are characterized by the predominance of olefins and a relative paucity of n-alkanes and methyl-branched alkanes. Bootstrap analyses and decay indices provided statistical support and robustness for these chemical-based relationships.
表皮碳氢化合物混合物可用于区分昆虫类群。当它们作为具有离散状态的独立特征并代表共享的、衍生特征的层次分布时，对于确定系统发育关系具有实用性。我们报告了通过对表皮碳氢化合物特征进行PAUP（简约法系统发育分析）分析得出的网白蚁化学表型之间的推断亲缘关系程度。使用了从加利福尼亚州、佐治亚州、新墨西哥州、亚利桑那州和内华达州收集的141个网白蚁群体。最初的最大简约分析将141个群体分为26种化学表型。随后的分析，以外群物种台湾乳白蚁和异白蚁属作为外群，将网白蚁类群分为三个主要谱系，每个谱系的特征是一组不同的占主导地位的甲基支链或不饱和碳氢化合物成分。谱系I中的网白蚁表皮碳氢化合物混合物以内部支链单甲基烷烃和11,15 - 二甲基烷烃为主。谱系II中的网白蚁以5 - 甲基烷烃和5,17 - 二甲基烷烃为主。谱系III中的类群以烯烃占主导且正构烷烃和甲基支链烷烃相对较少为特征。自展分析和衰减指数为这些基于化学的关系提供了统计支持和稳健性。
