Animal cells and systems

The Korean Society for Integrative Biology (한국통합생물학회)
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Silk Spinning Apparatuses in the Cribellate Spider Nurscia albofasciata (Araneae: Titanoecidae)

  • Park, Eun-Ah (Department of Biological Sciences & Institute of Basic Sciences. Dankook University) ;
  • Moon, Myung-Jin (Department of Biological Sciences & Institute of Basic Sciences. Dankook University)
  • Published : 2009.06.30
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Abstract

The fine structural characteristics of the silk spinning apparatus in the titanoecid spiders Nurscia albofasciata have been examined by the field emission scanning electron microscopy (FESEM). This titanoecid spiders have a pair of medially divided cribella just in front of the anterior spinnerets, and the surface of the cribellum is covered by hundred of tiny spigots which produce numerous cribellate silk fibrils. The cribellar silks are produced from the spigots of the sieve-like prate. and considered as a quite different sort of catching silk with dry-adhesive properties. The other types of the silk spigots were identified as follows: ampullate, pyriform and aciniform glands. Two pairs of major ampullate glands send secretory ductules to the anterior spinnerets, and another 1-2 pairs of minor ampullate glands supply the middle spinnerets. In addition, the pyriform glands send ductules to the anterior spinnerets, and two kinds of the aciniform spigots feed silk into the middle (A type) and the posterior spinnerets (both of A & B types), respectively.

Keywords

References

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