1. Nematicidal Activity of Quinolizidine Alkaloids and the Functional Group Pairs in Their Molecular Structure

   • Bo-Guang Zhao

   OriginalPaper Pages: 2205 - 2214

2. The Chemistry and Mineralogy of Three Savanna Lick Soils

   • Peter W. Abrahams

   OriginalPaper Pages: 2215 - 2228

3. Sex Pheromone of Ascogaster quadridentata, a Parasitoid of Cydia pomonella

   • Naomi C. DeLury
   • Gerhard Gries
   • John J. Brown

   OriginalPaper Pages: 2229 - 2245

4. The Sesterterpene Variabilin as a Fish-Predation Deterrent in the Western Atlantic Sponge Ircinia strobilina

   • Rosângela De A. Epifanio
   • Rebecca Gabriel
   • Guilherme Muricy

   OriginalPaper Pages: 2247 - 2254

5. Chemical Defenses Against Fish Predation in Three Brazilian Octocorals: 11β,12β-Epoxypukalide as a Feeding Deterrent in Phyllogorgia dilatata

   • Rosângela De A. Epifanio
   • Danielle L. Martins
   • Rebecca Gabriel

   OriginalPaper Pages: 2255 - 2265

6. Social Signals Involved in Scent-Marking Behavior by Cheek-Rubbing in Alpine Marmots (Marmota marmota)

   • M. C. Bel
   • J. Coulon
   • J. L. Clément

   OriginalPaper Pages: 2267 - 2283

7. Polymorphism in Plant Defense Against Herbivory: Constitutive and Induced Resistance in Cucumis sativus

   • Anurag A. Agrawal
   • Piotr M. Gorski
   • Douglas W. Tallamy

   OriginalPaper Pages: 2285 - 2304

8. Pheromone Components and Diel Periodicity of Pheromonal Communication in Lymantria fumida

   • Paul W. Schaefer
   • Gerhard Gries
   • David Holden

   OriginalPaper Pages: 2305 - 2312

9. Electroantennogram Responses of a Predator, Perillus bioculatus, and its Prey, Leptinotarsa decemlineata, to Plant Volatiles

   • Bernhard Weissbecker
   • Joop J. A. Van Loon
   • Marcel Dicke

   OriginalPaper Pages: 2313 - 2325

10. A Rock-Iron-Solubilizing Compound from Root Exudates of Tephrosia purpurea

    • K. K. Aggarwal
    • J. Rajiv
    • C. R. Babu

    OriginalPaper Pages: 2327 - 2336

11. Shifts in Life-History Traits as a Response to Cannibalism in Larval Long-Toed Salamanders (Ambystoma macrodactylum)

    • Erica L. Wildy
    • Douglas P. Chivers
    • Andrew R. Blaustein

    OriginalPaper Pages: 2337 - 2346

12. Allelopathic Potential and Chemical Constituents of Volatile Oil from Ageratum conyzoides

    • Chuihua Kong
    • Fei Hu
    • Yonghui Lu

    OriginalPaper Pages: 2347 - 2356

13. Sex-Related Perception of Insect and Plant Volatiles in Lygocoris pabulinus

    • Astrid T. Groot
    • Radbout Timmer
    • J. Hans Visser

    OriginalPaper Pages: 2357 - 2371

14. Cucurbitacins: A Role in Cucumber Beetle Steroid Nutrition?

    • Fathi T. Halaweish
    • Douglas W. Tallamy
    • Eva Santana

    OriginalPaper Pages: 2373 - 2383

15. Sequestration, Maintenance, and Tissue Distribution of Pyrrolizidine Alkaloid N-Oxides in Larvae of Two Oreina Species

    • Adelheid Ehmke
    • Martine Rahier
    • Thomas Hartmann

    OriginalPaper Pages: 2385 - 2395

16. Is IAA the Major Root Growth Factor Secreted from Plant-Growth-Mediating Bacteria?

    • Oz Barazani
    • Jacob Friedman

    OriginalPaper Pages: 2397 - 2406

17. Fondation Jean-Marie Delwart: Award of the Year 2000 Biology of Communication

    Announcement Pages: 2407 - 2407