Selami CANDAN, Irmak YILMAZ, Zekiye SULUDERE

Poecilimon cervus Karabağ (Orthoptera: Tettigoniidae) yumurta yapısı ve ultrastrüktürel özellikleri

Bu çalışmada, bir Tettigoniidae (Orthoptera) türü olan Poecilimon cervus Karabağ yumurta yapısı taramalı elektron mikroskobu (SEM) ve geçirmeli elektron mikroskobu (TEM) kullanılarak incelenmiştir. P. cervus bireyleri Kargasekmezde, (Kızılcahamam, Ankara) bulunan meşe ormanlarından 2009 yılında toplanmış ve yumurtalar labaratuvar şartlarında elde edilmiştir. P. cervus yumurtaları yaklaşık 3,4 x 1,3 mm büyüklüğünde, bilateral simetrili ve uzamış oval yapıdadır. Yumurta üzerinde belirgin koryonik çokgen desenlenmeleri bulunmaktadır. Posterior kutba yakın bölgedeki mikropilar alanda 9-18 mikropil açıklığı bulunmaktadır. Anterior kutuptan posterior kutba kadar bir kaburga bölgesi tüm yumurtayı mikropil alanı haricinde sarmaktadır. Yumurta koryonu dıştan içe doğru ekzokoryon ve endokoryon tabakalarından oluşmaktadır. Ekzokoryon çok sayıda koryonik sütunlar ve hava odalarına sahiptir. Sütunların içerisinde ekzokoryon ve endokoryon arasındaki bağlantıyı sağlayan ince kanallar bulunmaktadır. Endokoryon tabakası por kanalları taşıyan daha sıkı bir tabakadır. Endokoryonun alt yüzeyinde tek sıralı kısa sütunlu ince bir tabaka bulunmaktadır.

Structure of the egg of Poecilimon cervus Karabağ (Orthoptera: Tettigoniidae) and ultrastructural features

In this study, the egg structure of Poecilimon cervus Karabağ, a species of Tettigoniidae (Orthoptera: Tettigoniidae) was examined using the scanning electron microscope (SEM) and the transmission electron microscope (TEM). P. cervus individuals were collected from oak forests in Kargasekmez, Kızılcahamam, Ankara in 2009 and eggs were dissected. The eggs of P. cervus are about 3,4 x 1,3 mm in size, bilateral symmetrical and elongated ovoid in shape. There are some clear chorionic polygonal patterns in patches on the egg. At the micropylar area near the posterior pole, there are 9-18 micropyle openings. A rib recumbent from anterior pole to posterior pole surrounds the whole egg except micropylar area. The egg shell is composed of clear exochorion and endochorion layers from outermost to innermost. Exochorion has many chorionic columns and air chambers. In columns there are fine canals that ensure connection between exochorion and endochorion. Endochorion is more compact layer that has numerous por canals. The underside of endochorion has a single row fine layer.

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