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Biology Letters|May 22, 2009
Patterns of split sex ratio in ants have multiple evolutionary causes based on different within-colony conflictsRolf Kümmerli, Laurent KellerBiology Letters|May 26, 2009
Positive Darwinian selection results in resistance to cardioactive toxins in true toads (Anura: Bufonidae)David J Moore, Damien C T Halliday, David M Rowell, et al.Biology Letters|May 12, 2009
Stress hormone dynamics: an adaptation to migration?Anna L K Nilsson, Maria I SandellBiology Letters|May 14, 2009
Climate change and sexual size dimorphism in an Arctic spiderToke Thomas Høye, Jörg U Hammel, Thomas Fuchs, et al.Biology Letters|June 5, 2009
Plasticity in probabilistic reaction norms for maturation in a salmonid fishKentaro Morita, Jun-ichi Tsuboi, Toru NagasawaBiology Letters|June 5, 2009
Dynamic neuromodulation of aggression by vasotocin: influence of social context and social phenotype in territorial songbirdsJames L Goodson, David Kabelik, Sara E SchrockBiology Letters|June 12, 2009
Science should not be abandoned in a bid to resolve whaling disputesJustin Cooke, Russell Leaper, Vassili PapastavrouBiology Letters|June 12, 2009
Bone growth marks reveal protracted growth in New Zealand kiwi (Aves, Apterygidae)Estelle Bourdon, Jacques Castanet, Armand de Ricqlès, et al.Biology Letters|May 5, 2009
Kea (Nestor notabilis) consider spatial relationships between objects in the support problemAlice M I Auersperg, Gyula K Gajdon, Ludwig HuberPageof 442