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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
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Your Position :Home->Past Journals Catalog->2018 Vol.37 No.5

Relationship Between Tensile Behaviors and Biological Function of Egg-Case Silks of Argiope bruennichi
Author of the article:JIANG Ping1, WU Lihua2, LIAO Xinjun1, LONG Wanwan1, WANG Anping1, GUO Cong3*
Author's Workplace:1. Key Laboratory for Biodiversity Science and Ecological Engineering, Institute of Eco-environment and Resources, College of Life Sciences, Jinggangshan University, Ji'an, Jiangxi Province 343009, China;
2. Business College, Jinggangshan University, Ji'an, Jiangxi Province 343009, China;
3. Key Laboratory of Bio-Resources and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610065, China
Key Words:Argiope bruennichi; egg-case silk; tensile behavior; repeated stretching; biological function
Abstract:To investigate the relationship between tensile behaviors and bio-function of egg-case silks, the scaffolding silk, inner cover silk and outer silk cover, 3 types of egg-case silks of Argiope bruennichi were examined using electronic single-fiber tensile instron and electronic scale. The results showed that compared with the scaffolding silk, the tensile behavior curve of the inner cover silk was increased in the elastic region, small extent in the yield region, and buffering state in the reinforcing region. The scaffolding silk presented good tenacity and reproducibility of tensile behavior and repeated stretching; the forces at yield and broken point of the 3 egg-case silk samples were higher than egg weights, indicating that the females will make greater investments on the protection of their offsprings. The mechanical properties (e.g. break strength, extensibility) of the inner cover silk matched to their biological or ecological functions, respectively. These findings may be helpful to guide the biomimetic design of novel fiber materials.
2018,37(5): 556-562 收稿日期:2017-04-25
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