1. Symbiosis and Pathogenesis: Evolution of the Microbe-Host Interaction

   • M. Steinert
   • U. Hentschel
   • J. Hacker

   REVIEW ARTICLE Pages: 1 - 11

2. Anaerobic Degradation of Phenolic Compounds

   • B. Schink
   • B. Philipp
   • J. Müller

   REVIEW ARTICLE Pages: 12 - 23

3. Sex Pheromone of the Pine Sawfly Macrodiprion nemoralis (Hymenoptera : Diprionidae): Identification of (2S,3R,7R,9S)-3,7,9-Trimethyl-2-tridecanol as the Precursor for the Active Pheromone Acetate

   • A.-B. Wassgren
   • G. Bergström
   • E. Hedenström

   SHORT COMMUNICATION Pages: 24 - 29

4. El Niño Caused Collapse of the Sábalo Fishery (Prochilodus lineatus, Pisces: Prochilodontidae) in a South American River

   • A. J. P. Smolders
   • G. van der Velde
   • M.A. Guerrero Hiza

   SHORT COMMUNICATION Pages: 30 - 32

5. Gravity-Independent Orientation of Honeycomb Cells

   • S. C. Pratt

   SHORT COMMUNICATION Pages: 33 - 35

6. Light-Dependent Magnetoreception in Birds: Does Directional Information Change with Light Intensity?

   • W. Wiltschko
   • R. Wiltschko
   • U. Munro

   SHORT COMMUNICATION Pages: 36 - 40

7. Three Ways To Be a Saber-Toothed Cat

   • L. D. Martin
   • J. P. Babiarz
   • J. Hearst

   SHORT COMMUNICATION Pages: 41 - 44

8. The Basic Mechanism of Glass Polishing

   • A. Kaller

   SHORT COMMUNICATION Pages: 45 - 47

9. NATURWISSENSCHAFTEN AKTUELL

   Pages: 48 - 50