1. Female seed beetles, Callosobruchus maculatus, remate for male-supplied water rather than ejaculate nutrition

   • Claudia Ursprung
   • Michelle den Hollander
   • Darryl T. Gwynne

   Original Paper 28 January 2009 Pages: 781 - 788

   

2. Gunnison’s prairie dog (Cynomys gunnisoni): testing the resource dispersion hypothesis

   • J. L. Verdolin

   Original Paper 12 February 2009 Pages: 789 - 799

   

3. Male moths undertake both pre- and in-copulation mate choice based on female age and weight

   • Jin Xu
   • Qiao Wang

   Original Paper 04 February 2009 Pages: 801 - 808

   

4. Long-lasting consequences of elevated yolk testosterone levels on female reproduction

   • Wendt Müller
   • Jonas Vergauwen
   • Marcel Eens

   Original Paper 06 February 2009 Pages: 809 - 816

   

5. Repeatability and heritability of sperm competition outcomes in males and females of Tribolium castaneum

   • Tom Tregenza
   • Fathi Attia
   • Saleh Salem Bushaiba

   Original Paper 12 February 2009 Pages: 817 - 823

   

6. Peacocks orient their courtship displays towards the sun

   • Roslyn Dakin
   • Robert Montgomerie

   Original Paper 21 February 2009 Pages: 825 - 834

   

7. Sperm competition and ejaculate investment in red squirrels (Tamiasciurus hudsonicus)

   • Vanessa L. Bonanno
   • Albrecht I. Schulte-Hostedde

   Original Paper 19 February 2009 Pages: 835 - 846

   

8. Experience counts: females favor multiply mated males over chemically endowed virgins in a moth (Utetheisa ornatrix)

   • Vikram K. Iyengar

   Original Paper 26 February 2009 Pages: 847 - 855

   

9. Genetic relatedness and space use in a behaviorally flexible species of marmot, the woodchuck (Marmota monax)

   • Christine R. Maher

   Original Paper 03 March 2009 Pages: 857 - 868

   

10. Egg composition in relation to social environment and maternal physiological condition in the collared flycatcher

    • Rita Hargitai
    • Kathryn E. Arnold
    • János Török

    Original Paper 26 February 2009 Pages: 869 - 882

    

11. Intersexual food transfer among orangutans: do females test males for coercive tendency?

    • Maria A. van Noordwijk
    • Carel P. van Schaik

    Original Paper 10 March 2009 Pages: 883 - 890

    

12. A patch use model to separate effects of foraging costs on giving-up densities: an experiment with white-tailed deer (Odocoileus virginianus)

    • Guillaume Rieucau
    • William L. Vickery
    • G. Jean Doucet

    Original Paper 10 March 2009 Pages: 891 - 897

    

13. Sperm design and variation in the New World blackbirds (Icteridae)

    • Stefan Lüpold
    • George M. Linz
    • Tim R. Birkhead

    Original Paper 10 March 2009 Pages: 899 - 909

    

14. Multiple paternity and offspring quality in tree swallows

    • Peter O. Dunn
    • Jan T. Lifjeld
    • Linda A. Whittingham

    Original Paper 04 March 2009 Pages: 911 - 922

    

15. Pheromone-based female mate choice and its effect on reproductive investment in a spitting spider

    • Teck Hui Koh
    • Wee Khee Seah
    • Daiqin Li

    Original Paper 04 March 2009 Pages: 923 - 930

    

16. Sex ratio in lesser black-backed gull in relation to environmental pollutants

    • Kjell Einar Erikstad
    • Jan Ove Bustnes
    • Tone Kristin Reiertsen

    Original Paper 05 March 2009 Pages: 931 - 938

    

17. Females go where the food is: does the socio-ecological model explain variation in social organisation of solitary foragers?

    • Melanie Dammhahn
    • Peter M. Kappeler

    Original Paper Open access 10 March 2009 Pages: 939 - 952

    

18. The role of body size in early mating behavior in a simultaneous hermaphrodite, Chelidonura sandrana

    • Dennis Sprenger
    • Rolanda Lange
    • Nils Anthes

    Original Paper 04 March 2009 Pages: 953 - 958

    

19. Nitric oxide production: an easily measurable condition index for vertebrates

    • Elin Sild
    • Peeter Hõrak

    Methods 04 February 2009 Pages: 959 - 966