Observations on the Moulting of the Silkworm and a Histological Study of the Moulting Gland During Functioning ...Stanford University, 1929 - 72페이지 |
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2 페이지
... integument but all those parts derived from the ectoderm , the stomodaeum and protodaeum and the lining of the large and small tracheal trunks , are shed at the time of the moult ; in other words , " not only the integument with its ...
... integument but all those parts derived from the ectoderm , the stomodaeum and protodaeum and the lining of the large and small tracheal trunks , are shed at the time of the moult ; in other words , " not only the integument with its ...
12 페이지
... integument takes place finally at the ends of the muscles , and as the last connections between the old and the new cuticula disappear , the larva is enabled to move forward out of the old skin in a manner to be described . When the ...
... integument takes place finally at the ends of the muscles , and as the last connections between the old and the new cuticula disappear , the larva is enabled to move forward out of the old skin in a manner to be described . When the ...
24 페이지
... INTEGUMENT When the larva is first freed from the old integ- ument and exposed to the air , it appears exceedingly moist and soft . Liquid still remains in the troughs of the sutures of the abdomen and in.certain cuticular cresses -24 ...
... INTEGUMENT When the larva is first freed from the old integ- ument and exposed to the air , it appears exceedingly moist and soft . Liquid still remains in the troughs of the sutures of the abdomen and in.certain cuticular cresses -24 ...
목차
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