世界的殖民和贸易路线的形成，由黏菌模拟
The World's Colonisation and Trade Routes Formation as Imitated by Slime Mould
摘要：
多头绒泡菌（Physarumpolycephalum）的原质团以原生质管网络跨越营养源而闻名。这些网络将营养物质和代谢物输送到疟原虫的全身。为了模拟一个假设的殖民世界和主要运输路线的形成，我们从排列在培养皿或三维地球表面上的琼脂板上切下大陆，用燕麦片代表选定的大都市地区的位置，并在其中一个大都市地区接种疟原虫。原质团向营养源传播，用它的原生质管网络跨越营养源，甚至跨越大陆之间的裸露基质。从实验室实验中，我们得到加权绒泡菌图，分析其结构，比较它们与基本的邻近图和广义图来自丝绸之路和亚洲公路网。
英文摘要：
The plasmodium of Physarum polycephalum is renowned for spanning sources of nutrients with networks of protoplasmic tubes. The networks transport nutrients and metabolites across the plasmodium's body. To imitate a hypothetical colonisation of the world and formation of major transportation routes we cut continents from agar plates arranged in Petri dishes or on the surface of a three-dimensional globe, represent positions of selected metropolitan areas with oat flakes and inoculate the plasmodium in one of the metropolitan areas. The plasmodium propagates towards the sources of nutrients, spans them with its network of protoplasmic tubes and even crosses bare substrate between the continents. From the laboratory experiments we derive weighted Physarum graphs, analyse their structure, compare them with the basic proximity graphs and generalised graphs derived from the Silk Road and the Asia Highway networks.
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