1. Species-specific antipredatory behaviours: effects on prey choice in different habitats

   • B. Christensen
   • L. Persson

   OriginalPaper Pages: 1 - 9

2. Maternal care in the bromeliad crab Metopaulias depressus (Decapoda) : maintaining oxygen, pH and calcium levels optimal for the larvae

   • Rudolf Diesel
   • Martina Schuh

   OriginalPaper Pages: 11 - 15

3. Memory dynamics and foraging strategies of honeybees

   • Uwe Greggers
   • Randolf Menzel

   OriginalPaper Pages: 17 - 29

4. Costs and consequences of variation in the size of ruff leks

   • Jacob Höglund
   • Robert Montgomerie
   • Fredrik Widemo

   OriginalPaper Pages: 31 - 39

5. Sex-biased lactational duration in a human population and its reproductive costs

   • Susan W. Margulis
   • Jeanne Altmann
   • Carole Ober

   OriginalPaper Pages: 41 - 45

6. Seasonal decline in intracolony genetic relatedness in eastern tent caterpillars: implications for social evolution

   • James T. Costa III
   • Kenneth G. Ross

   OriginalPaper Pages: 47 - 54

7. The ultimate function of nuptial feeding in the bushcricket Poecilimon veluchianus (Orthoptera : Tettigoniidae : Phaneropterinae)

   • Klaus Reinhold
   • Klaus-Gerhard Heller

   OriginalPaper Pages: 55 - 60

8. Brood reduction in response to manipulated brood sizes in the common swift (Apus apus)

   • Thais L. F. Martins
   • Jonathan Wright

   OriginalPaper Pages: 61 - 70