Crypsis through disruptive coloration in an isopod
Crypsis through disruptive coloration in an isopod
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DOI：
10.1098/rspb.1998.0399
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发表时间：
1998-06-22
影响因子：
4.7
通讯作者：
Merilaita, S
中科院分区：
文献类型：
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作者：
Merilaita, S
白色的圆点的颜色改变海洋等足类动物Idotea baltica出现神秘的褐藻岩藻vesiculosus与其white-coloured体外寄生依勒克拉crustulenta和龟头improvisus。这项研究表明，这种颜色的隐蔽性是通过破坏性着色而不是通过背景匹配来实现的。背景匹配隐密要求图案元素的大小和形状与视觉背景非常接近。等足类动物身上的白斑与它们的自然背景的白斑的比较与这一预测相矛盾。破坏性色彩的目的是通过与背景部分混合来模糊动物的真实形态，并将人们的注意力从动物的轮廓转移到不必要的图案上，它预设了比背景中图案元素分布预期更多的边缘元素，以及高度可变和复杂的元素。将观察到的斑点分布与具有随机分布斑点的模拟个体进行比较表明，这些等足类动物的斑点确实比预期更频繁地接触身体轮廓。此外，斑点是高度可变和复杂的。
The white-spotted colour morph of the marine isopod Idotea baltica appears cryptic on the brown alga Fucus vesiculosus with its white-coloured epizoites Electra crustulenta and Balanus improvisus. This study shows that the crypsis of this coloration is achieved through disruptive coloration rather than through background matching. Crypsis through background matching requires that the sizes and the shapes of the pattern elements should closely resemble those of the visual background. Comparisons between the white spots of the isopods and those of their natural background contradicted this prediction. Disruptive coloration, which aims to obscure the true form of the animal by partly blending with the background and distracting the attention of the vie it er from the contour of the animal to unessential patterns, presupposes more marginal elements than expected by the pattern element distribution in the background, and also highly variable and complex elements. Comparison between the observed spot distribution and simulated individuals with randomly distributed spots showed that the spots in these isopods do indeed touch the body outline more often than expected. Furthermore, the spots were highly variable and complex.