Cobweb-weaving spiders produce different attachment discs for locomotion and prey capture

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Cobweb-weaving spiders produce different attachment discs for locomotion and prey capture.

Spiders' cobwebs ensnare both walking and flying prey. While the scaffolding silk can entangle flying insects, gumfoot silk threads pull walking prey off the ground and into the web. Therefore, scaffolding silk needs to withstand the impact of the prey, whereas gumfoot silk needs to easily detach from the substrate when contacted by prey. Here we show that spiders accomplish these divergent dem...

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Abstract Submitted for the MAR13 Meeting of The American Physical Society Cob-Weaving Spiders Design Attachment Discs Differently for Locomotion and Prey Capture1

Submitted for the MAR13 Meeting of The American Physical Society Cob-Weaving Spiders Design Attachment Discs Differently for Locomotion and Prey Capture1 VASAV SAHNI, JARED HARRIS, TODD BLACKLEDGE, ALI DHINOJWALA, The University of Akron — Spiders’ cobwebs ensnare both walking and flying prey. While the scaffolding silk can entangle flying insects, gumfoot silk threads pull walking prey off the...

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The role of granules within viscous capture threads of orb-weaving spiders.

Sticky viscous prey capture threads form the spiral elements of spider orb-webs and are responsible for retaining insects that strike a web. These threads are formed of regularly spaced aqueous droplets that surround a pair of supporting axial fibers. When a thread is flattened on a microscope slide a small, opaque granule can usually be seen within each droplet. These granules have been though...

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Adhesive recruitment by the viscous capture threads of araneoid orb-weaving spiders.

The sticky prey capture threads of orb-webs are critical to web performance. By retaining insects that strike the web, these spirally arrayed threads allow a spider time to locate and subdue prey. The viscous capture threads spun by modern orb-weaving spiders of the Araneoidea clade replaced the dry, fuzzy cribellar capture threads of the Deinopoidea and feature regularly spaced moist, adhesive...

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Composition and substrate-dependent strength of the silken attachment discs in spiders.

Araneomorph spiders have evolved different silks with dissimilar material properties, serving different purposes. The two-compound pyriform secretion is used to glue silk threads to substrates or to other threads. It is applied in distinct patterns, called attachment discs. Although ubiquitously found in spider silk applications and hypothesized to be strong and versatile at low material consum...

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ژورنال

عنوان ژورنال: Nature Communications

سال: 2012

ISSN: 2041-1723

DOI: 10.1038/ncomms2099