Spider's web. Coloured scanning electron micrograph (SEM) of threads of silk in a web of a spider. Silk is produced from silk glands in the abdomen of the spider. Inside the glands the silk is in liquid-crystalline form,but as a thread of silk is squeezed out by the spinnerets the liquid hardens to the protein fibroin. Different types and thicknesses of thread are used for different purposes. Adhesive threads are mainly used in web construction. Non-adhesive threads may be used to line burrows,wrap prey or as egg cocoons. Dragline silk,which supports the outer edge of webs,is five times stronger than steel. Magnification unknown | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Berrod, Thierry / Mona Lisa Production |
Bildgröße: | 5100 px × 3466 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: |
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