カイコの大卵突然変異遺伝子による形質発現 : 4.大卵の卵殻表面構造

概要

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The surface structure of the eggshell of the Giant egg mutant (Ge) of Bombyx mori was observed by a differential intereference contrast microscope. Four spatially-differentiated surface regions, called anterior (micropyle region taking form of single flower with many petals), posterior, dorsal plus ventral, and lateral (unit of network patterns each taking shape of regular or irregular polygon which reflects boundary of follicular epithelial cell), were found on the Ge mature eggshell as on the normal eggshell. However, the size of the Ge polygon at the lateral region was smaller than that of the normal eggshell, and the number of knobs within the Ge polygon were fewer than in the normal polygon. This result suggests that the Ge egg is made by an increased number of follicle cells, each of which secretes chorion over a smaller surface area.
日本応用動物昆虫学会の論文
1993-05-25