1. Animal cooperation among unrelated individuals

   • Lee Dugatkin

   Review Article Pages: 533 - 541

2. Chemical interactions between amino acid and RNA: multiplicity of the levels of specificity explains origin of the genetic code

   • Hervé Seligmann
   • Nissim G. Amzallag

   Review Article Pages: 542 - 551

3. Adult flight in a water strider exposed to habitat drydown in the larval stages

   • Manabu Kishi
   • Tetsuo Harada
   • John R. Spence

   Short Communication 30 November 2002 Pages: 552 - 554

   

4. Mammalian neurohormones: potential significance in reproductive physiology of St. John's wort (Hypericum perforatum L.)?

   • Susan J. Murch
   • Praveen K. Saxena

   Short Communication Pages: 555 - 560

5. Mimicry of queen Dufour's gland secretions by workers of Apis mellifera scutellata and A. m. capensis

   • Catherine L. Sole
   • Per Kryger
   • Robin M. Crewe

   Short Communication Pages: 561 - 564

6. Seven suggestive quantitative trait loci influence hygienic behavior of honey bees

   • Keryn L. Lapidge
   • Benjamin P. Oldroyd
   • Marla Spivak

   Short Communication Pages: 565 - 568

7. Aerosols: unexpected disequilibrium phenomena between airborne radio activities of lead-210 and its progenies bismuth-210 and polonium-210

   • Gabriele Wallner
   • Axel Berner
   • Karl Irlweck

   Short Communication Pages: 569 - 574

8. The functionality of female reciprocal calls in the Iberian midwife toad (Alytes cisternasii): female-female acoustic competition?

   • Jaime Bosch

   Short Communication Pages: 575 - 578

9. Tooth hardness increases with zinc-content in mandibles of young adult leaf-cutter ants

   • Robert M. S. Schofield
   • Michael H. Nesson
   • Kathleen A. Richardson

   Short Communication 03 December 2002 Pages: 579 - 583