Fate map of the eye-antennal imaginal disc in the stalk-eyed fly Cyrtodiopsis dalmanni
Fate map of the eye-antennal imaginal disc in the stalk-eyed fly Cyrtodiopsis dalmanni
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茎眼蝇Cyrtodiopsis dalmanni眼-触角成虫盘的命运图
DOI：
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发表时间：
2002
期刊：
影响因子：
--
通讯作者：
H. Smith
中科院分区：
文献类型：
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作者：
Imogen A. Hurley;A. Pomiankowski;Kevin Fowler;H. Smith
抽象的。在双翅目的几个科中观察到以头部被膜的侧向延伸的形式的头顶过大。一种特别极端的形式是在屈光不正的杆眼苍蝇中发现的，在这种情况下，眼睛和触角在眼柄末端都横向移位。我们研究了达马尼草这种夸张形态的发育基础。屈光度眼-触角成像盘分为前部和后部，这两部分之间有一条狭窄的中间组织的“盘柄”相连。我们通过将其切割成碎片并将其注入宿主幼虫体内进行培养，建立了这种光盘的命运图。成人眼和后头囊结构，包括眼柄和眼窝，起源于椎间盘的后部，而腹侧成人结构，如天线和掌骨，则起源于椎间盘的前部。因此，椎间盘的后部和前部都形成了成人头部广泛分离的结构。此外，成体中相邻的结构来自于椎间盘的不同区域。这些结果证实并扩展了先前基于分子标记分析得出的屈光度眼-触角视盘区域同一性的结论。
Abstract. Hypercephaly, in the form of lateral extensions of the head capsule, is observed in several families of Diptera. A particularly extreme form is found in diopsid stalk-eyed flies, in which both eyes and antennae are laterally displaced at the end of eyestalks. We have studied the developmental basis of this exaggerated morphology in Cyrtodiopsis dalmanni. Diopsid eye-antennal imaginal discs are divided into anterior and posterior portions, which are joined by a narrow "disc-stalk" of intervening tissue. We established a fate map for this disc by cutting it into fragments and culturing them in vivo by injecting them into host larvae. The adult eye and dorsal head capsule structures, including the eyestalk and the ocelli, are derived from the posterior portion of the disc, while ventral adult structures such as the antenna and the palpus are derived from the anterior portion of the disc. Thus both posterior and anterior disc portions give rise to structures that are widely separated in the adult head. Moreover, structures that are adjacent in the adult are derived from different regions of the disc. These results confirm and extend previous conclusions about regional identity in diopsid eye-antennal discs that were based on the analysis of molecular markers.
刺猬、无翅和正齿突指定了果蝇成年头部的发育。
DOI：
10.1242/dev.122.6.1849
发表时间：
1996
期刊：
Development (Cambridge, England)
影响因子：
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作者：
Royet,J;Finkelstein,R
通讯作者：
Finkelstein,R