STRUCTURE OF THE CHORION IN THE FALSE MELON BEETLE, ATRACHYA MENETRIESI FALDERMANN (COLEOPTERA : CHRYSOMELIDAE)

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概要

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• Structure of the chorion in Atrachya menetriesi was examined with scanning electron microscopes. The surface of the chorion is marked with hexagonal patterns which are moulded by the follicle cells in the ovariole. The micropyle is situated at the anterior end of the egg. The chorion consists of four distinct layers : the inner layer is about 1.4μ thick and very solid ; the mid-layer is about 1.4μ thick and porous ; the outer layer is about 4μ thick and traversed by aeropylar pits ; the thin extrachorion might be secreted over the outer layer in the calyx of the ovary. Many cracks appear in the extrachorion as the egg swells by absorbing water. The number of polygons on the egg surface was slightly larger in the diapause eggs than in the non-diapause ones. Both the whole eggs and cast-off chorions were significantly heavier in the former than in the latter.

• 1973-12-25

著者

• ANDO Yoshikazu

  Laboratory of Entomology. Faculty of Agriculture, Hirosaki University

• Ando Yoshikazu

  Laboratory Of Applied Entomology Faculty Of Agriculture Iwate University

• ANDO Yoshikazu

  Laboratory of Entomology, Faculty of Agriculture, Hirosaki University

関連論文

• Effects of Photoperiod on Nymphal Development, Pre-Oviposition Period and Egg Diapause in the Subtropical Rice Grasshopper, Oxya chinensis formosana SHIRAKI (Orthoptera: Catantopidae)
• Effects of crowding and photoperiod on wing morph and egg production in Eobiana engelhardti subtropica (Orthoptera: Tettigoniidae)
• The effect of temperature on embryonic development and local adaptation in the life cycle of Eobiana engelhardti subtropica Bey-Bienko (Orthoptera : Tettigoniidae)
• Geographic Variation in the Incidence of Non-diaopause Eggs of the False Melon Beetle, Atrachya menetriesi FALDERMANN (Coleoptera : Chrysomelidae)
• Egg Diapause and Ambient Oxygen Tension in the False Melon Beetle, Atrachya menetriesi FALDERMANN(Coleoptera : Chrysomelidae)
• STRUCTURE OF THE CHORION IN THE FALSE MELON BEETLE, ATRACHYA MENETRIESI FALDERMANN (COLEOPTERA : CHRYSOMELIDAE)
• Egg Diapause and Water Absorption in the False Melon Beetle, Atrachya menetriesi FALDERMANN(Coleoptera : Chrysomelidae)
• Distribution of Mercury in the Eggs of the False Melon Beetle, Atrachya menetriesi FALDERMANN (Coleoptera : Chrysomeridae), Treated with Mercuric Chloride for Breaking Diapause
• The Effect of Mercury Compounds on Breaking of Diapause in the Eggs of the False Melon Beetle, Atrachya menestriesi FALDERMANN (Coleoptera : Chrysomeridae)
• High Temperature and Diapause Termination in the Eggs of Teleogryllus commodus (Orthoptera : Gryllidae)
• Thermoperiod Reduces the Thermal Constant Required for Oviposition in the Leaf Beetle Atrachya menetriesi
• Effect of Temperature on the Termination of Prolonged Initial Diapause in Eobiana japonica (Bolivar)(Orthoptera : Tettigoniidae)
• Outbreaks and Delayed Hatching after Hibernation in the Rice Grasshopper, Oxya yezoensis SHIRAKI(Orthoptera:Catantopidae)
• Seasonal and Altitudinal Adaptations in Three Katydid Species : Ecological Significance of Initial Diapause
• Photoperiodic Control of Adult Diapause in a Subtropical Katydid, Euconocephalus pallidus REDTENBACHER(Orthoptera:Tettigoniidae)

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