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Silk spinning apparatuses in the cribellate spider nurscia albofasciata (Araneae: Titanoecidae)

Animal Cells and Systems 2009년 13권 2호 p.153 ~ 160
박은아, 문명진,
소속 상세정보
박은아 ( Park Eun-Ah ) - Dankook University Department of Biological Sciences
문명진 ( Moon Myung-Jin ) - Dankook University Department of Biological Sciences

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.

키워드

cribellum; fine structure; silk; spider; Nurscia albofasciata

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