Ouweneel Willem J, van der Meer Jitse M
Hubrecht Laboratory, Utrecht, Netherlands.
Wilhelm Roux Arch Entwickl Mech Org. 1973 Jun;172(2):149-161. doi: 10.1007/BF00576938.
The mature haltere disc, when implanted into a larva of the same age, undergoes metamorphosis along with the host, and produces a haltere, haltere sclerite, notum III, and pleural process. Implants ordinarily form an inverted vesicle, into which the haltere is frequently everted, usually only partly. Many "adventitious bristles" may be formed which are not foundin situ. It was found thatsc may reduce, andmwh may increase the number of sensilla.On the basis of results obtained from transplanted disc fragments an organ map of the haltere disc was constructed, which shows the presumptive haltere area to be located in the posterio-central part of the disc, while the anterio-medial part forms the thoracic structures dorsal to the haltere, and the posterio-lateral part the thoracic structures ventral to it. The anlage of the "adventitious bristles" is probably within the notum area. The haltere anlage proper is concentric; the prospective distal capitellum is located in the center, and is surrounded by the anlagen of the more proximal segments.The organ map of the haltere disc is compared with that of other discs. Organ maps seem to be basically concentric. There is a close homology between the maps of the wing and the haltere disc.
成熟的平衡棒盘植入同龄幼虫后，会与宿主一起经历变态，并发育出平衡棒、平衡棒骨片、第三背板和侧板突。植入物通常会形成一个倒置的囊泡，平衡棒常常会外翻进入其中，通常只是部分外翻。可能会形成许多“不定刚毛”，这些刚毛在原位是不存在的。研究发现，sc可能会减少，而mwh可能会增加感觉器的数量。根据移植盘片段的实验结果，构建了平衡棒盘的器官图谱，该图谱显示，推定的平衡棒区域位于盘的后中部，而前内侧部分形成平衡棒上方的胸部结构，后外侧部分形成其下方的胸部结构。“不定刚毛”的原基可能位于背板区域内。平衡棒原基本身是同心的；预期的远端小头位于中心，周围是近端节段的原基。将平衡棒盘的器官图谱与其他盘的图谱进行了比较。器官图谱似乎基本是同心的。翅盘和平衡棒盘的图谱之间存在密切的同源性。
