Ed Tillinghast

Professor Emeritus of Zoology

Address: Department of Zoology
University of New Hampshire
Durham, NH 03824

Ph.D., Duke University

Phone: (603) 862-1791





PHYSIOLOGY AND BIOCHEMISTRY OF ANNELIDS AND ARACHNIDS

The spider and its web present an exciting model for the study of basic biological questions. Research in my laboratory is carried out at several levels of biological organization, and students are encouraged to explore the spider and its web at any level of understanding, from the molecular and cellular to that of the organism and its environment.



At the biochemical level we are using DNA methodology to deduce the primary structure of spider silk. Such information is expected to shed light upon the evolution of fibrous proteins as well as give partial explanation to the remarkable physical qualities of spider silk. In addition, we work to understand the chemical basis of the web's adhesiveness and use this as a model to understand the fundemental mechanism of biological adhesives.

On the cellular and organismal level, we are conducting studies designed to understand the neural and endocrine control of silk production. We are also examining the role of the spider's digestive enzymes in the recycling of old web into new web, as well as the nutritional requirements for web construction.















At the population level, we are interested in the cemical adaptation of the webto various environmental factors such as rainfall and humidity. Future studies will also be directed to understanding the genetic, nutritional and behavioral aspects of web construction.

While most of my research is now on the spider, I also have a longstanding interest in the physiology and metabolism of earthworms.



SELECTED PUBLICATIONS
  • Tillinghast, E.K. and E.J. Kavanagh. 1977. The akaline proteases of Argiope and their possible role in web digestion. J. Exp. Zool. 202:213-222.
  • Tillinghast, E.K. and M.A. Townley. 1986. The independent regulation of protein synthesis in the major ampullate glands of Araneus cavaticus (Keyserling). J. Insect Physiol. 32:117-123.
  • Townley, M.A., D.T. Bernstein, K.S. Gallagher, and E.K. Tillinghast. 1991. A comparative study of orb web hygroscopicity and adhesive spiral composition in the three araneid spiders. J. Exp. Zool. 259:154-165.
  • Townley, M.A. , E.K. Tillinghast, and N.A. Cherim. 1993. Moult-related changes in ampullate silk gland morphology and usage in the araneid spider Araneus cavaticus. Phil. Trans. R. Soc. Lond. B. 340:25-38.

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