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Issue:ISSN 1000-7083
          CN 51-1193/Q
Director:Sichuan Association for Science and Technology
Sponsored by:Sichuan Society of Zoologists; Chengdu Giant Panda Breeding Research Foundation; Sichuan Association of Wildlife Conservation; Sichuan University
Address:College of Life Sciences, Sichuan University, No.29, Wangjiang Road, Chengdu, Sichuan Province, 610064, China
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Your Position :Home->Past Journals Catalog->2010 Vol.29 No.1

Morphology, Fibrous Structure and Tensile Behavior of the Silk Left behind by Two Spiders: Argiope amoena and Nephila clavata
Author of the article:JIANG Ping1, LIU Hui-fen2*, XIAO Yong-hong1, LIAO Xin-jun1, GUO Cong2
Author's Workplace:(1. College of Life Sciences, Jinggangshan University, Ji’an, Jiangxi Province 343009, China;2. Key Laboratory of Bio-resources and Eco-environment, Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610064, China)
Key Words:spider silk; micro-morphology; tensile behavior; biological function
The silk fibers left behind by two orb spiders, Argiope amoena andNephila clavata, which contained the walking thread from N. clavata and predatory threads and web mooring thread from A. amoena, were observed by a Scanning Electronic Microscope. The results show the silk fibers left behind by the spiders presented a diversity in morphological structures and composition and diameter of the silk fiber, which consists of double, three, and four filaments and dozens of fibrilliform filaments with a large range diameters. A peculiar “s” structure similar to spring was found.The tensile behavior of the walking thread of N. clavata and the web mooring thread of A. amoenaanalyzed with an YG001A electric single-fiber tensile apparatus.The investigations demonstrate that the spider can produce diverse silk trails with different morphologies and structures correlated with the corresponding mechanical properties and biological functions conforming to the cost-benefit principle under different natural environments. It seems that the spider can adjust the composition, microstructure morphologies and fibrils diameter of its silk fibers matching it to the immediate particular requirements of individual. These investigations will were expand and improve our understanding of the relationship between the microstructure and mechanical performance of these unique biomaterials.
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