Opell Brent D
Department of Biology, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061-0406.
J Morphol. 1998 Apr;236(1):57-64. doi: 10.1002/(SICI)1097-4687(199804)236:1<57::AID-JMOR4>3.0.CO;2-L.
Like most spiders, members of the orb-weaving family Uloboridae have a dual respiratory system. Book lungs oxygenate the hemolymph and tracheae carry oxygen directly to tissues. Most members of the family are characterized by an extensive tracheal system that extends into the prosoma, where branches enter the legs. A comparison of both absolute and size-specific indices of these two respiratory components in six uloborid species using the independent contrast method shows that their development is inversely related and indicates that these two systems are complementary. Species that more actively monitor reduced webs have tracheae with greater cross sectional areas and book lungs with smaller areas than do orb-weaving species that less aggressively manipulate their webs. Thus, the acuteness of a spider's oxygen demands appears to influence the development of its respiratory components. As the tracheae assume more responsibility for providing oxygen the book lungs become less well developed and vice versa. J. Morphol. 236:57-64, 1998. © 1998 Wiley-Liss, Inc.
与大多数蜘蛛一样，圆蛛科络新妇属的成员拥有双重呼吸系统。书肺为血淋巴充氧，气管则将氧气直接输送到组织中。该科的大多数成员都具有广泛的气管系统，该系统延伸到前体，分支进入腿部。使用独立对比法对六种络新妇属物种的这两种呼吸成分的绝对指数和特定大小指数进行比较，结果表明它们的发育呈负相关，这表明这两个系统是互补的。与那些较少积极操纵蛛网的圆蛛物种相比，更积极监测减少的蛛网的物种具有更大横截面积的气管和更小面积的书肺。因此，蜘蛛对氧气需求的敏锐程度似乎会影响其呼吸成分的发育。随着气管承担更多提供氧气的责任，书肺的发育就会变差，反之亦然。《形态学杂志》236:57 - 64, 1998年。© 1998威利 - 利斯公司。
