1. The Importance of Human Ecology at the Threshold of the Next Millennium: How Can Population Growth Be Stopped?

   • W. Nentwig

   Review Article Pages: 411 - 421

2. Intra- and Intercellular Communication Systems in Ciliates

   • H.-D. Görtz
   • H.-W. Kuhlmann
   • A. Miyake

   Review Article Pages: 422 - 434

3. Effects of Serotonergic and Opioidergic Drugs on Escape Behaviors and Social Status of Male Crickets

   • V. E. Dyakonova
   • F.-W. Schürmann
   • D. A. Sakharov

   Short Communications Pages: 435 - 437

4. Heat Shielding: A Novel Method of Colonial Thermoregulation in Honey Bees

   • Philip T. Starks
   • David C. Gilley

   Short Communications Pages: 438 - 440

5. Radioluminescence Dating: A New Tool for Quaternary Geology and Archaeology

   • T. Trautmann
   • A. Dietrich
   • M. R. Krbetschek

   Short Communication Pages: 441 - 444

6. Identification of Four Distinct Subunit Types in the Unique 6×6 Hemocyanin of the Centipede Scutigera coleoptrata

   • W. Gebauer
   • J. Markl

   Short Communication Pages: 445 - 447

7. Persistence of Eclosion Rhythm in Drosophila melanogaster After 600 Generations in an Aperiodic Environment

   • V. Sheeba
   • V. K. Sharma
   • A. Joshi

   Short Communication Pages: 448 - 449

8. Rhizophora mangle (Rhizophoraceae) Triterpenoids with Insecticidal Activity

   • L. A. D. Williams

   Short Communication Pages: 450 - 452

9. He-Ne Laser Light Induced Changes in the State of Chromatin in Human Cells

   • Yury G. Shckorbatov

   Short Communication Pages: 452 - 453

10. NAWI aktuell

    Pages: 454 - 456