Yusuf KALENDER, Selami CANDAN, Dilek DURAK, Zekiye SULUDERE

Coreus marginatus (Linneaus, 1758) (Heteroptera: Coreidae) yumurtalarının dış morfolojisi

Bu çalışmada Coreus marginatus (Linneaus, 1758)'un yumurta yapısı ışık ve taramalı elektron mikroskobu ile incelendi. Genellikle tek tek bırakılan yumurtalar yeni bırakıldıklarında altın sarısı renkte olup embriyonik gelişimle birlikte gittikçe koyu renk almaktadır. Yumurtaların uzunluğu ortalama 1.72+0.01 mm, genişliği ise 1.08+0.01 mm' dir. Yumurta yüzeyi ışık mikroskobu ile incelendiğinde düz, taramalı elektron mikroskobunda ise değişik şekildeki poligonal hücrelerle kaplı olduğu görülür. Yumurtanın anteriyor bölgesinde yer alan mikropiller, tüberküller şeklindedir ve sayıları 12-15 kadardır. Yumurta kırıcısı yumurta açılma hattının dairesel olarak açılmasını sağlar.

External morphology of the eggs of Coreus marginatus (Linneaus , 1758) (Heteroptera: Coreidae)

The eggs of Coreus marginatus (Linneaus, 1758) were observed with light and scanning electron microscopes. The females were collected from Çubuk province (Ankara, Turkey) and maintained under laboratory condition. Eggs were laid singly in cotton batting and were usually well seperated from each other. The elongated-shaped eggs are in average 1.72±0.01 mm long and 1.08+0.01 mm wide. Eggs were golden yellow color at deposition but changed to brown after embriyonic development. On the egg surface, variable shaped polygons are clearly seen by a scanning electron microscope. There is ring of widely seperated aero-micropylar tubercles round and anterior pole. These do not project inwards. The well-marked operculum intersects the ring of micropyles. They have 12-15 micropylar projections. The hatching line is cracked in a circular shape by egg burster. Key words: Eggshell, chorion, Coreus marginatus, Heteroptera, SEM

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