The ultrastructure of the developing leg disk of Calliphora erythrocephala
| Autor: | Th. M. van Ruiten, Th. E. Sprey |
|---|---|
| Rok vydání: | 1974 |
| Předmět: |
Cell type
Histology Sense organ Biology Calliphora Pathology and Forensic Medicine Microtubule medicine Extracellular Animals Cilia Leg Blood Cells Diptera Cilium Metamorphosis Biological Epithelial Cells Dendrites Desmosomes Cell Biology Anatomy biology.organism_classification Epithelium Trachea medicine.anatomical_structure Larva Ultrastructure Drosophila |
| Zdroj: | Zeitschrift f�r Zellforschung und mikroskopische Anatomie. 147:373-400 |
| ISSN: | 1432-0878 0302-766X |
| DOI: | 10.1007/bf00307472 |
| Popis: | The ultrastructure of the imaginal leg disk of Calliphora has been studied at three stages of the third larval instar. Several cell types can be distinguished: epithelial cells of the disk proper, the peripodial membrane and the apodemes; cells of the new tracheal branch; promyoblasts and sense cells. Between the different parts of the disk epithelium no structural differences are found. A preliminary morphometric study reveals that nuclear size differences do occur. The apodeme cells are very long and contain numerous microtubules. The promyoblasts are characterized by dilatations of the ER. The cells of the new tracheal branch resemble those of the disk epithelium but are larger and have less lipid vacuoles. Sense cells are found in a sense organ on the last tarsal segment, in a monoscolopale organ at the dorsal side of the disk and in a polyscolopale organ in the femurotibia region. They are partially enclosed by one or more sheath cells. In the scolopale organs the dendrites form a long cilium, which at the distal end is embedded in an extracellular substance, produced by a cap cell. The dendrites of the tarsal sense organ have a characteristic sheath and run through the peripodial cavity and the stalk to the hypoderm. |
| Databáze: | OpenAIRE |
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