İlkay ÇORAK ÖCAL, Nazife YİĞİT KAYHAN, Ümmügülsüm Hanife AKTAŞ

Argiope bruennichi (Scopoli, 1772) Örümceğinin Ağ Yapısı ve Örü Aygıtının Morfolojisi

Örümcekler, omurgasız hayvanlar içinde karasal hayata en iyi şekilde uyum sağlamış gruplardan birisidir ve dünya üzerinde yaklaşık 48.000 tür ile temsil edilmektedir. Her ne kadar bütün örümcekler ağ örmeseler de örümceklerin ağları tam anlamıyla bir sanat eseridir. Örümceklerin ağ örmesindeki başlıca sebep avlanmaktır. Doğadaki bazı örümcek türleri ağlara bağımlı olarak yaşarken bazıları ağlara bağımlı olmayarak yaşamlarını sürdürürler. Temel taksonomik özellikler genellikle değişmeden kalmasına rağmen, bazı örümceklerin ağ örme aygıtları adaptif varyasyonlara uğrayabilirler. Bu çalışmada, oldukça dikkat çekici ağ örücü bir örümcek olan Argiope bruennichi’nin (Scopoli, 1772) ağ yapısı ve ağ örü aygıtının yapısal organizasyonu, taramalı elektron mikroskobu (SEM) kullanılarak incelenmiştir. A. bruennichi’nin ağ yapısı, örü memeleri özellikle posterior örü memeleri ve spigotların düzenlenmesi gösterilmiş ve elde edilen veriler literatür ışığında tartışılmıştır.

Argiope bruennichi (Scopoli, 1772) Spider's Web Structure and Morphology of the Spinneret

Spiders are one of the groups that best adapted to terrestrial life among in invertebrates and are represented by approximately 48,000 species in the world. Although all spiders do not weave webs, the webs of spiders are literally a work of art. The main reason for spider web weaving is hunting. Some spider species live in the nature dependent on the own web, while others continue to live without being dependent on the own web. Although basic taxonomic features generally remain unchanged, some spider-silk weaving apparatus may undergo adaptive variations. In this study, the web structure of the weaving web spider, Argiope bruennichi (Scopoli, 1772) and the structural organization of the web weaving apparatus was observed by using scanning electron microscopy (SEM). The web structure of A. bruennichi, spinnerets especially posterior spinneret and arrangement of its spigots are shown and discussed in the light of the literature.

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