Female seed beetles, Callosobruchus maculatus, remate for male-supplied water rather than ejaculate nutrition Claudia UrsprungMichelle den HollanderDarryl T. Gwynne Original Paper 28 January 2009 Pages: 781 - 788
Gunnison’s prairie dog (Cynomys gunnisoni): testing the resource dispersion hypothesis J. L. Verdolin Original Paper 12 February 2009 Pages: 789 - 799
Male moths undertake both pre- and in-copulation mate choice based on female age and weight Jin XuQiao Wang Original Paper 04 February 2009 Pages: 801 - 808
Long-lasting consequences of elevated yolk testosterone levels on female reproduction Wendt MüllerJonas VergauwenMarcel Eens Original Paper 06 February 2009 Pages: 809 - 816
Repeatability and heritability of sperm competition outcomes in males and females of Tribolium castaneum Tom TregenzaFathi AttiaSaleh Salem Bushaiba Original Paper 12 February 2009 Pages: 817 - 823
Peacocks orient their courtship displays towards the sun Roslyn DakinRobert Montgomerie Original Paper 21 February 2009 Pages: 825 - 834
Sperm competition and ejaculate investment in red squirrels (Tamiasciurus hudsonicus) Vanessa L. BonannoAlbrecht I. Schulte-Hostedde Original Paper 19 February 2009 Pages: 835 - 846
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
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
Egg composition in relation to social environment and maternal physiological condition in the collared flycatcher Rita HargitaiKathryn E. ArnoldJános Török Original Paper 26 February 2009 Pages: 869 - 882
Intersexual food transfer among orangutans: do females test males for coercive tendency? Maria A. van NoordwijkCarel P. van Schaik Original Paper 10 March 2009 Pages: 883 - 890
A patch use model to separate effects of foraging costs on giving-up densities: an experiment with white-tailed deer (Odocoileus virginianus) Guillaume RieucauWilliam L. VickeryG. Jean Doucet Original Paper 10 March 2009 Pages: 891 - 897
Sperm design and variation in the New World blackbirds (Icteridae) Stefan LüpoldGeorge M. LinzTim R. Birkhead Original Paper 10 March 2009 Pages: 899 - 909
Multiple paternity and offspring quality in tree swallows Peter O. DunnJan T. LifjeldLinda A. Whittingham Original Paper 04 March 2009 Pages: 911 - 922
Pheromone-based female mate choice and its effect on reproductive investment in a spitting spider Teck Hui KohWee Khee SeahDaiqin Li Original Paper 04 March 2009 Pages: 923 - 930
Sex ratio in lesser black-backed gull in relation to environmental pollutants Kjell Einar ErikstadJan Ove BustnesTone Kristin Reiertsen Original Paper 05 March 2009 Pages: 931 - 938
Females go where the food is: does the socio-ecological model explain variation in social organisation of solitary foragers? Melanie DammhahnPeter M. Kappeler Original Paper Open access 10 March 2009 Pages: 939 - 952
The role of body size in early mating behavior in a simultaneous hermaphrodite, Chelidonura sandrana Dennis SprengerRolanda LangeNils Anthes Original Paper 04 March 2009 Pages: 953 - 958
Nitric oxide production: an easily measurable condition index for vertebrates Elin SildPeeter Hõrak Methods 04 February 2009 Pages: 959 - 966