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Microdissection of Black Widow Spider Silk-producing Glands
Published on: January 11, 2011
The water-repellent cerotegument of whip-spiders (Arachnida: Amblypygi)
Jonas O Wolff1, Michael Seiter2, Stanislav N Gorb3
1Functional Morphology and Biomechanics, Zoological Institute, University of Kiel, Am Botanischen Garten 9, 24118, Kiel, Germany; Department of Biological Sciences, Macquarie University, Sydney, NSW, 2109, Australia.
Abstract:
The cuticle of arthropods is usually composed of layers of a chitin-protein-microcomposite, a proteinaceous epicuticle and a thin lipid coating. However, in some instances a thick cement layer (cerotegument) covers the cuticle and may produce elaborate microstructures. This has previously been described for millipedes and mites. Here we report the previously unknown presence of a superhydrophobic cerotegument in whip-spiders (Ambypygi) and reveal its variation in ultrastructure and water-repellence between species. We discuss the relevance of found micro-morphological and physical characters for taxonomy and phylogenetics of this group, and the potential biological functions.
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