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Volume 271(1543);  May 22, 2004
Sex causes altruism. Altruism causes sex. Maybe.
Joel R Peck
Proc Biol Sci. 2004 May 22; 271(1543): 993–1000. doi: 10.1098/rspb.2003.2650.
PMCID: PMC1691695
Occasional sex in an 'asexual' polyploid hermaphrodite.
Thomas G D'Souza, Martin Storhas, Hinrich Schulenburg, Leo W Beukeboom, and Nicolaas K Michiels
Proc Biol Sci. 2004 May 22; 271(1543): 1001–1007. doi: 10.1098/rspb.2004.2675.
PMCID: PMC1691700
Multiple mating and reproductive skew in Trinidadian guppies.
S A Becher and A E Magurran
Proc Biol Sci. 2004 May 22; 271(1543): 1009–1014. doi: 10.1098/rspb.2004.2701.
PMCID: PMC1691690
Breathing with a mouth full of eggs: respiratory consequences of mouthbrooding in cardinalfish.
Sara Ostlund-Nilsson and Göran E Nilsson
Proc Biol Sci. 2004 May 22; 271(1543): 1015–1022. doi: 10.1098/rspb.2004.2700.
PMCID: PMC1691693
Testosterone, cuckoldry risk and extra-pair opportunities in the Seychelles warbler.
Janske van de Crommenacker, David S Richardson, Ton G G Groothuis, Corine M Eising, Arjan L Dekker, and Jan Komdeur
Proc Biol Sci. 2004 May 22; 271(1543): 1023–1031. doi: 10.1098/rspb.2004.2697.
PMCID: PMC1691698
Male red-winged blackbirds distrust unreliable and sexually attractive neighbours.
Robert Olendorf, Thomas Getty, Kim Scribner, and Scott K Robinson
Proc Biol Sci. 2004 May 22; 271(1543): 1033–1038. doi: 10.1098/rspb.2004.2687.
PMCID: PMC1691689
Reduced flocking by birds on islands with relaxed predation.
Guy Beauchamp
Proc Biol Sci. 2004 May 22; 271(1543): 1039–1042. doi: 10.1098/rspb.2004.2703.
PMCID: PMC1691692
Signature-whistle production in undisturbed free-ranging bottlenose dolphins (Tursiops truncatus).
Mandy L H Cook, Laela S Sayigh, James E Blum, and Randall S Wells
Proc Biol Sci. 2004 May 22; 271(1543): 1043–1049. doi: 10.1098/rspb.2003.2610.
PMCID: PMC1691697
Acoustic monitoring on a humpback whale (Megaptera novaeangliae) feeding ground shows continual singing into late Spring.
Christopher W Clark and Phillip J Clapham
Proc Biol Sci. 2004 May 22; 271(1543): 1051–1057. doi: 10.1098/rspb.2004.2699.
PMCID: PMC1691688
Red environmental noise and the appearance of delayed density dependence in age-structured populations.
Lin Jiang and Nan Shao
Proc Biol Sci. 2004 May 22; 271(1543): 1059–1064. doi: 10.1098/rspb.2004.2689.
PMCID: PMC1691696
Evolution of the human ABO polymorphism by two complementary selective pressures.
Robert M Seymour, Martin J Allan, Andrew Pomiankowski, and Kenth Gustafsson
Proc Biol Sci. 2004 May 22; 271(1543): 1065–1072. doi: 10.1098/rspb.2004.2674.
PMCID: PMC1691687
Host heterogeneity is a determinant of competitive exclusion or coexistence in genetically diverse malaria infections.
Jacobus C de Roode, Richard Culleton, Sandra J Cheesman, Richard Carter, and Andrew F Read
Proc Biol Sci. 2004 May 22; 271(1543): 1073–1080. doi: 10.1098/rspb.2004.2695.
PMCID: PMC1691691
The evolution of phylogenetic differences in the efficiency of digestion in ruminants.
F. J. Pérez-Barberia, D. A. Elston, I. J. Gordon, and A. W. Illius
Proc Biol Sci. 2004 May 22; 271(1543): 1081–1090. doi: 10.1098/rspb.2004.2714.
PMCID: PMC1691694
Gait selection in the ostrich: mechanical and metabolic characteristics of walking and running with and without an aerial phase.
Jonas Rubenson, Denham B Heliams, David G Lloyd, and Paul A Fournier
Proc Biol Sci. 2004 May 22; 271(1543): 1091–1099. doi: 10.1098/rspb.2004.2702.
PMCID: PMC1691699
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