Opell Brent D
Department of Biology, Virginia Polytechnic Institute and State University Blacksburg, Virginia 24061.
J Morphol. 1990 Nov;206(2):211-216. doi: 10.1002/jmor.1052060207.
The book lung surface areas of representatives of six genera were measured and divided by spider prosomal and leg mass and by the product of prosomal length and width to obtain two indexes of book lung area. Both indexes are greatest in species that have the simplest tracheal systems and smallest in those with the most extensive tracheal systems. When species are ordered phylogenetically and the lung area indexes of their hypothetical ancestors computed, a transformational increase in lung area is indicated. Neither the lung area of a species nor its phylogenetic position is significantly related to the general moisture regime of its habitat. The number of leaves in a book lung is positively correlated with both spider size and total lung area. However, leaf number is not correlated with tracheal development and shows no transformational change.
测量了六个属代表的书肺表面积，并除以蜘蛛的头胸部和腿部质量以及头胸部长度与宽度的乘积，以获得两个书肺面积指数。在气管系统最简单的物种中，这两个指数最大，而在气管系统最复杂的物种中最小。当根据系统发育顺序排列物种并计算其假想祖先的肺面积指数时，表明肺面积有转化性增加。一个物种的肺面积及其系统发育位置与其栖息地的总体湿度状况均无显著相关性。书肺中的叶片数量与蜘蛛大小和总肺面积均呈正相关。然而，叶片数量与气管发育无关，也没有转化性变化。
