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First published online June 15, 2007
Journal of Experimental Biology 210, 2352-2360 (2007)
Published by The Company of Biologists 2007
doi: 10.1242/jeb.004952
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The effect of insect surface features on the adhesion of viscous capture threads spun by orb-weaving spiders

Brent D. Opell1,* and Harold S. Schwend2

1 Department of Biological Sciences, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, USA
2 College of Veterinary Medicine, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, USA


Figure 1
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  		Fig. 1. The dorsal surface of a fleshfly (Sarcophage bullata) abdomen.

 

Figure 2
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  		Fig. 2. The upper surface of a fleshfly wing.

 

Figure 3
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  		Fig. 3. The distal portion of the hemelytra of a milkweed bug (Oncopeltus fasciatus).

 

Figure 4
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  		Fig. 4. Elytra of a convergent lady beetle (Hippodamia convergens).

 

Figure 5
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  		Fig. 5. Values used in modeling the interaction between viscous threads and insect surfaces.

 

Figure 6
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  		Fig. 6. Comparison of the measured and modeled stickiness that four species' viscous threads registered on contact plates covered with four insect surfaces. Histogram bars denote measured stickiness with error bars of ±1 s.e.m. Letters denote the ranking (high to low) of each species' measured values as determined by Ryan-Einot-Gabriel-Welsch Multiple Range Tests. Dots represent stickiness values determined by the four-variable model.

 

Figure 7
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  		Fig. 7. Comparison of the relative stickiness values of viscous and cribellar threads. Error bars represent ± 1 s.e.m. Letters denote the separate rankings (high to low) of mean values of viscous and cribellar threads on each of the four insect surfaces as determined by Ryan-Einot-Gabriel-Welsch Multiple Range Tests.

 




© The Company of Biologists Ltd 2007