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首页> 外文期刊>Pedobiologia >Fluctuating asymmetry of the yellow meadow ant along a metal-pollution gradient
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Fluctuating asymmetry of the yellow meadow ant along a metal-pollution gradient

机译：草地蚂蚁沿金属污染梯度的波动不对称性

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摘要

Asymmetry in the morphological traits of bilateral organisms can be induced by environmental stress. As a result of released selection pressure, traits of low functional importance should demonstrate comparatively higher asymmetry in metal-polluted areas. In the present study we measured the size of the eyes of yellow meadow ant workers Lasius flavus. The eyes of this species are typically reduced due to underground life style. The ants were sampled from 48 wild colonies originating from 16 sites located along the metal pollution gradient established in a post-mining area in Poland. We found low intra-colonial variability of the asymmetry index describing the difference in the right and left eye. As a consequence, the asymmetry index was not associated with pollution levels at the sites of origin. The results indicate that although the eyes of L. flavus are reduced, metal pollution does not increase significantly asymmetry between the right and left eye. Power analysis estimated that the accuracy of the statistical analysis would have detected 18% decrease in FA along the pollution gradient. Thus, FA in L flavus eyes should not be considered as an efficient metal-stress indicator. The mechanisms underlying the precision and symmetry between the right and left eye seem to still function during development. (C) 2015 Elsevier GmbH. All rights reserved.
机译：环境压力可引起双边生物的形态特征不对称。由于释放选择压力，功能重要性低的性状在金属污染地区应表现出相对较高的不对称性。在本研究中，我们测量了黄色草地蚂蚁工人Lasius flavus的眼睛大小。由于地下生活方式，该物种的眼睛通常会减少。这些蚂蚁是从48个野生菌落中取样的，这些菌落来自波兰采矿后地区沿金属污染梯度分布的16个地点。我们发现不对称指数的低殖民地变异性描述了左右眼的差异。结果，不对称指数与原产地的污染水平无关。结果表明，尽管黄萎病菌的眼睛减少了，但金属污染并没有明显增加左右眼之间的不对称性。功率分析估计，统计分析的准确性将检测到沿污染梯度的FA降低18％。因此，黄褐斑眼中的FA不应被视为有效的金属应激指标。在开发过程中，左右眼之间的精确度和对称性所依据的机制似乎仍然起作用。 （C）2015 Elsevier GmbH。版权所有。

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