1. Effects of social group size on information transfer and task allocation

   • Stephen W. Pacala
   • Deborah M. Gordon
   • H. C. J. Godfray

   OriginalPaper Pages: 127 - 165

2. Fitness minimization and dynamic instability as a consequence of predator-prey coevolution

   • Peter A. Abrams
   • Hiroyuki Matsuda

   OriginalPaper Pages: 167 - 186

3. Conditions for sympatric speciation: A diploid model incorporating habitat fidelity and non-habitat assortative mating

   • Paul A. Johnson
   • F. C. Hoppensteadt
   • Guy L. Bush

   OriginalPaper Pages: 187 - 205

4. Low heritability in morphological characters of Tengmalm's owls: The role of cyclic food and laying date?

   • Harri Hakkarainen
   • Erkki Korpimäki
   • Sten Vikström

   OriginalPaper Pages: 207 - 219