Ultrastructural changes of corpora allata during larval and pupal stages in the silkworm, Bombyx mori

Changes in fine structure of the corpora allata cells were observed through the larval and pupal stages of the silkworm. Basal lamina surrounding the corpora allata cells began to disappear at the beginning of the pupal stage. During this time, the axons in the cytoplasm and the basal lamina were fo...

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Veröffentlicht in:	Applied Entomology and Zoology 1986/11/25, Vol.21(4), pp.509-514
1. Verfasser:	Ura, T. (Tamana High School, Kumamoto (Japan))
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences Biological and medical sciences Bombyx mori CELLS CELLULE CELULAS Exact sciences and technology Fundamental and applied biological sciences. Psychology GLANDE GLANDS GLANDULAS GUSANO DE SEDA Insecta Invertebrates LARVAE LARVAS LARVE MITOCHONDRIA MITOCHONDRIE MITOCONDRIA Morphology. Histology. Cytology Other techniques and industries PUPAE PUPAS PUPE SILKWORMS ULTRAESTRUCTURA ULTRASTRUCTURE VER A SOIE
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Beschreibung
Zusammenfassung:	Changes in fine structure of the corpora allata cells were observed through the larval and pupal stages of the silkworm. Basal lamina surrounding the corpora allata cells began to disappear at the beginning of the pupal stage. During this time, the axons in the cytoplasm and the basal lamina were found to reduce in number. Mitochondria changed from a spherical shape into a rod one during the larval-pupal development. Lipid droplets appeared and increased after the 8th day of the 5th instar larvae. Consideration was given to the relationship between these changes and the activity of corpus allatum.
ISSN:	0003-6862 1347-605X
DOI:	10.1303/aez.21.509