The fine structure of the egg-shell of the medfly Ceratitis capitata has been described with light, scanning and transmission electron microscopes. In addition to a vitelline envelope, the egg-shell consists of an innermost dense layer, a trabecolate endochorion and a fibrous exochorion. At the anterior pole, the egg has a micropylar cap made up of an elaborate layer branching from the outermost endochorion and by a central large amount of exochorion. In the center of the micropylar cap the micropyle duct opens. At the posterior pole, the exochorion forms a semilunar structure.

R., D., Marchini, D., Callaini, G., Fanciulli, P.P., G., D.B., & G., M.P. (1986). The egg structure of the mediterranean fruit fly Ceratitis capitata (Diptera, Tephritidae). REDIA, 69, 313-327.

The egg structure of the mediterranean fruit fly Ceratitis capitata (Diptera, Tephritidae).

MARCHINI, DANIELA;CALLAINI, GIULIANO;FANCIULLI, PIETRO PAOLO;
1986

Abstract

The fine structure of the egg-shell of the medfly Ceratitis capitata has been described with light, scanning and transmission electron microscopes. In addition to a vitelline envelope, the egg-shell consists of an innermost dense layer, a trabecolate endochorion and a fibrous exochorion. At the anterior pole, the egg has a micropylar cap made up of an elaborate layer branching from the outermost endochorion and by a central large amount of exochorion. In the center of the micropylar cap the micropyle duct opens. At the posterior pole, the exochorion forms a semilunar structure.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11365/26418
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