Wingless and intermorphic males in the ant Cardiocondyla venustula
Wingless and intermorphic males in the ant Cardiocondyla venustula
复制标题
DOI：
10.1007/s00040-012-0263-5
复制
发表时间：
2013-02-01
期刊：
影响因子：
1.3
通讯作者：
Schrempf, A.
中科院分区：
文献类型：
--
作者：
Heinze, J.;Aumeier, V.;Schrempf, A.
蚁属的特点是明显的雄性二型性与无翅的战斗机男性和有翅的传播男性。有翼的雄性已经在至少两个物种丰富的分支中消失了。在这里，我们描述的形态变异的男性的小venustula uThukela谷，南非。有翼的雄性似乎不存在于这个物种。然而，除了具有广泛融合的胸缝和没有单眼的无翅（“类麦角形”）雄性动物之外，还存在“内型”雄性动物，其联合收割机将无翅雄性动物的典型形态与有翅雄性动物的特征相结合，例如，更明显的胸缝、退化的单眼和退化的翅膀。类似的“异形”雄性先前已被描述为来自东南亚“卡古苏奇”复合体的几个遗传上不同的谱系之一（昆虫。Soc·52：274-281，2005）。为了确定雄性形态是否也与C. venustula中，我们测定了13个群体的工蜂线粒体DNA的631 bp片段。我们发现了六个单倍型的序列变异高达5.7%。异形和无翅的男性似乎并没有与这些血统的一个特定的殖民地内表现出相同的序列。有趣的是，两个殖民地包含不同的单倍型的工人，这表明偶尔迁移的皇后和/或工人殖民地之间。
The ant genus Cardiocondyla is characterized by a pronounced male diphenism with wingless fighter males and winged disperser males. Winged males have been lost convergently in at least two species-rich clades. Here, we describe the morphological variability of males of Cardiocondyla venustula from uThukela valley, South Africa. Winged males appear to be absent from this species. However, in addition to wingless ("ergatoid") males with widely fused thoracic sutures and without ocelli, "intermorphic" males exist that combine the typical morphology of wingless males with characteristics of winged males, e.g., more pronounced thoracic sutures, rudimentary ocelli, and vestigial wings. Similar "intermorphic" males have previously been described from one of several genetically distinct lineages of the Southeast Asian "Cardiocondyla kagutsuchi" complex (Insect. Soc. 52: 274-281, 2005). To determine whether male morphology is associated with distinct clades also in C. venustula, we sequenced a 631 bp fragment of mitochondrial DNA of workers from 13 colonies. We found six haplotypes with a sequence variation of up to 5.7 %. Intermorphic and wingless males did not appear to be associated with a particular of these lineages and within colonies showed the same sequence. Interestingly, two colonies contained workers with different haplotypes, suggesting the occasional migration of queens and/or workers between colonies.