Observations on the Moulting of the Silkworm and a Histological Study of the Moulting Gland During Functioning ...Stanford University, 1929 - 72ÆäÀÌÁö |
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... chitogenous or hypodermal cells . This change is very gradual and is quite marked within twenty - four to thirty - six hours of ecdysis . At this time close obser- vation shows a very slight slipping out of the tracheal lining at the ...
... chitogenous or hypodermal cells . This change is very gradual and is quite marked within twenty - four to thirty - six hours of ecdysis . At this time close obser- vation shows a very slight slipping out of the tracheal lining at the ...
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... chitogenous cells and indications around the spiracles that the old cuticula is separated from the inner cuticula of the peritreme . This is followed by the " triangle stage " during which the new head becomes visible , enlarged , and ...
... chitogenous cells and indications around the spiracles that the old cuticula is separated from the inner cuticula of the peritreme . This is followed by the " triangle stage " during which the new head becomes visible , enlarged , and ...
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THE SPINNING PERIOD BEHAVIOR OF LARVA | 5 |
THE GLOSSY STAGE FIRST INDICATIONS OF MOULTING | 8 |
THE ACTIVE STAGE MUSCULAR CONTRACTIONS | 11 |
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active stage adheres closely alimentary canal anal horn appear Bellesne beneath the old blood body begins body continues Bombyx mori ceases to feed chitinous chitogenous digestive tube DORSAL GLAND dorsal horn drawn ectoderm elongate exerted exuvial rupture Fahr fifteen pairs FIGURE IV DORSAL fixed position folds glossy stage head and thorax HISTOLOGICAL STUDY hours before ecdysis hypodermal cells insect integument Knab labium larva larva feeds larval head last half hour leaf mandibles maximum swelling ments mesothorax METATHORAX moulting fluid moulting glands mouth cavity muscle attachments muscular action neck membrane nuclear material observation Odonata oesophagus old capsule old cuticula becomes old head capsule old skin peritreme posterior segments posteriorly preceding ecdysis preceding the rupture pressure previously described process of moulting region rupture takes place Shafer silkworm slight slipped spinning period spiracle stomodaeum stretched texture thoracic cuticula threads tion tracheal linings transparency triangle stage twenty-four uplifted ventral Verson wave