False col. SEM of spinneret silk gland of a spider
Numéro d’image : 11910708
| False-colour scanning electron micrograph of the spinneret silk-gland of the spider,Araneus sp. At the end of the abdomen on a spider many ducts of the spinning gland open on the surface. The whole gland is called a spinneret. Here,ducts open at the tips of hair-like structures which protrude through the body exoskeleton. Silk is secreted from the tips of these hairs; individual silk fibres combine,(at lower right) to form a single thread. Spiders use silk to construct a great variety of webs,cocoon-like tubes,trapdoors & trip-lines. The legs may have special structures designed for web spinning. Some males spin a sperm nets,& females spin egg-cases. Mag: x170 at 35mm | |
| Licence : | Droits gérés |
| Crédit: | Science Photo Library / Scharf, David |
| Taille de l’image : | 3478 px × 3090 px |
| Model Release : | Non requis |
| Property Release : | Non requis |
| Restrictions : |
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