1. Innate antipredator responses of Arctic charr (Salvelinus alpinus) depend on predator species and their diet

   • Sampsa Vilhunen
   • Heikki Hirvonen

   Original Article 27 August 2003 Pages: 1 - 10

   

2. To breed or not to breed—food competition and other factors involved in female breeding decisions in the pair-living nocturnal fork-marked lemur (Phaner furcifer)

   • Oliver Schülke

   Original Article 02 September 2003 Pages: 11 - 21

   

3. Antipredator responses of California ground squirrels to rattlesnakes and rattling sounds: the roles of sex, reproductive parity, and offspring age in assessment and decision-making rules

   • Ronald R. Swaisgood
   • Matthew P. Rowe
   • Donald H. Owings

   Original Article 16 September 2003 Pages: 22 - 31

   

4. Correlates of horn and antler shape in bovids and cervids

   • T. M. Caro
   • C. M. Graham
   • M. M. Flores

   Original Article 29 August 2003 Pages: 32 - 41

   

5. Do changes in risk-taking affect habitat shifts of sticklebacks?

   • Ulrika Candolin
   • Heinz-Rudolf Voigt

   Original Article 17 September 2003 Pages: 42 - 49

   

6. Testosterone, dominance signalling and immunosuppression in the house sparrow, Passer domesticus

   • K. L. Buchanan
   • M. R. Evans
   • A. R. Goldsmith

   Original Article 12 September 2003 Pages: 50 - 59

   

7. Fitness consequences of sexual cannibalism in female Argiope bruennichi

   • Lutz Fromhage
   • Gabriele Uhl
   • Jutta M. Schneider

   Original Article 04 July 2003 Pages: 60 - 64

   

8. A dynamic trait affects continuous pair assessment in the blue-footed booby, Sula nebouxii

   • Roxana Torres
   • Alberto Velando

   Original Article 09 August 2003 Pages: 65 - 72

   

9. Responses of female lizards, Lacerta monticola, to males' chemical cues reflect their mating preference for older males

   • Pilar López
   • Pedro Aragón
   • José Martín

   Original Article 02 September 2003 Pages: 73 - 79

   

10. Inter-sexual differences in T-cell-mediated immunity of black-headed gull chicks (Larus ridibundus) depend on the hatching order

    • Wendt Müller
    • Cor Dijkstra
    • Ton G. G. Groothuis

    Original Article 09 September 2003 Pages: 80 - 86

    

11. Effect of food location and quality on recruitment sounds and success in two stingless bees, Melipona mandacaia and Melipona bicolor

    • James C. Nieh
    • Felipe A. L. Contrera
    • Vera L. Imperatriz-Fonseca

    Original Article 16 September 2003 Pages: 87 - 94

    

12. Vocalizations and courtship intensity correlate with mounting success in marginated tortoises Testudo marginata

    • Roberto Sacchi
    • Paolo Galeotti
    • Donato Ballasina

    Original Article 09 September 2003 Pages: 95 - 102

    

13. Testosterone and helping behavior in the azure-winged magpie (Cyanopica cyanus): natural covariation and an experimental test

    • Carlos de la Cruz
    • Elena Solís
    • Gabriele Sorci

    Original Article 17 September 2003 Pages: 103 - 111

    

14. The effect of food availability on the semilunar courtship rhythm in the fiddler crab Uca lactea (de Haan) (Brachyura: Ocypodidae)

    • Tae Won Kim
    • Jae C. Choe

    Erratum 02 September 2003 Pages: 112 - 112