MORPHOGENESIS OF THE ANTENNA OF THE MALE SILKMOTH, ANTHERAEA-POLYPHEMUS .1. THE LEAF-SHAPED ANTENNA OF THE PUPA FROM DIAPAUSE TO APOLYSIS
MORPHOGENESIS OF THE ANTENNA OF THE MALE SILKMOTH, ANTHERAEA-POLYPHEMUS .1. THE LEAF-SHAPED ANTENNA OF THE PUPA FROM DIAPAUSE TO APOLYSIS
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DOI：
10.1016/0040-8166(90)90007-v
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发表时间：
1990-01-01
期刊：
影响因子：
2.6
通讯作者：
STEINER, C
中科院分区：
文献类型：
--
作者：
KEIL, TA;STEINER, C
雄性蚕蛾 Anthraea Polyphemus 的触角是一种羽毛状结构，由中央茎和约 10 根组成。 120个侧枝，总共携带约7万个嗅觉感受器。我们研究蛹期的发育情况。在滞育结束时，触角雏形由叶形的单层表皮囊组成。它通过中央主气管供给氧气，该气管发出许多细细的侧分支。它们被分段地排列成束，延伸至触角叶片的周边。当表皮从蛹角质层缩回时（脱泡；第 1 阶段），它由形态均匀的细胞组成。表皮细胞形成一个由长的、不规则的基底突起（表皮足）组成的网络，与触角腔纵横交错。在解体后的第一天（第2阶段），触角表皮分化为交替的厚“致敏”和薄“非致敏”区域，排列成与气管束平行的条纹。许多深色、细长的细胞（可能是感觉干细胞）分散在致感上皮中。在致感条纹的远端边缘发现了许多非常早期的感器，这些位置后来被毛感器占据。整个触角叶片被透明的蜕皮膜包围，蜕皮膜由蛹角质层的最内层组成，在蜕皮过程中脱落。
The antenna of the male silkmoth Anthrraea Polyphemus is a featherlike structure consisting of a central stem and ca. 120 side branches, which altogether carry about 70,000 olfactory sensilla. We investigate the development during the pupal phase. At the end of diapause, the antennal rudiment consists of a leaf-shaped, one-layered epidermal sac. It is supplied with oxygen via a central main trachea, which gives off numerous thin side branches. These are segmentally arranged into bundles which run to the periphery of the antennal blade. When the epidermis retracts from the pupal cuticle (apolysis; stage 1), it consists of cells which are morphologically uniform. The epidermal cells form a network of long, irregular basal protrusions (epidermal feet), which crisscross the antennal lumen. During the first day post-apolysis (stage 2), the antennal epidermis differentiates into alternating thick ''sensillogenic'' and thin ''non-sensillogenic'' areas arranged in stripes which run in parallel to the tracheal bundles. Numerous dark, elongated cells, which might be the sensillar stem cells, are scattered in the sensillogenic epithelium. A number of very early sensilla has been found at the distal edges of the sensillogenic stripes in positions which later will be occupied by sensilla chaetica. The whole antennal blade is enveloped by the transparent ecdysial membrane, consisting of the innermost layers of the pupal cuticle which are detached during apolysis.