| | This journal provides immediate access to some articles. Expression of FGF2 in the limb blastema of two Salamandridae correlates with their regenerative capability. S Giampaoli, S Bucci, M Ragghianti, G Mancino, F Zhang, and P Ferretti Proc Biol Sci. 2003 November 7; 270(1530): 2197–2205. doi: 10.1098/rspb.2003.2439.PMCID: PMC1691501 Cooperative breeding in oscine passerines: does sociality inhibit speciation? Andrew Cockburn Proc Biol Sci. 2003 November 7; 270(1530): 2207–2214. doi: 10.1098/rspb.2003.2503.PMCID: PMC1691506 Forest fragmentation is associated with primary brood sex ratio in the treecreeper (Certhia familiaris). Petri Suorsa, Heikki Helle, Esa Huhta, Ari Jäntti, Ari Nikula, and Harri Hakkarainen Proc Biol Sci. 2003 November 7; 270(1530): 2215–2222. doi: 10.1098/rspb.2003.2490.PMCID: PMC1691495 Maternal condition, yolk androgens and offspring performance: a supplemental feeding experiment in the lesser black-backed gull (Larus fuscus). Nanette Verboven, Pat Monaghan, Darren M Evans, Hubert Schwabl, Neil Evans, Christine Whitelaw, and Ruedi G Nager Proc Biol Sci. 2003 November 7; 270(1530): 2223–2232. doi: 10.1098/rspb.2003.2496.PMCID: PMC1691499 Trans-shell infection by pathogenic micro-organisms reduces the shelf life of non-incubated bird's eggs: a constraint on the onset of incubation? Mark I Cook, Steven R Beissinger, Gary A Toranzos, Roberto A Rodriguez, and Wayne J Arendt Proc Biol Sci. 2003 November 7; 270(1530): 2233–2240. doi: 10.1098/rspb.2003.2508.PMCID: PMC1691504 Why are dengue virus serotypes so distantly related? Enhancement and limiting serotype similarity between dengue virus strains. Isao Kawaguchi, Akira Sasaki, and Michael Boots Proc Biol Sci. 2003 November 7; 270(1530): 2241–2247. doi: 10.1098/rspb.2003.2440.PMCID: PMC1691498 Defective or effective? Mutualistic interactions between virus genotypes. Miguel López-Ferber, Oihane Simón, Trevor Williams, and Primitivo Caballero Proc Biol Sci. 2003 November 7; 270(1530): 2249–2255. doi: 10.1098/rspb.2003.2498.PMCID: PMC1691503 The role of juvenile hormone in immune function and pheromone production trade-offs: a test of the immunocompetence handicap principle. Markus J Rantala, Anssi Vainikka, and Raine Kortet Proc Biol Sci. 2003 November 7; 270(1530): 2257–2261. doi: 10.1098/rspb.2003.2472.PMCID: PMC1691508 Rapid evolution and the cost of resistance to Bacillus thuringiensis in greenhouse populations of cabbage loopers, Trichoplusia ni. Alida F Janmaat and Judith Myers Proc Biol Sci. 2003 November 7; 270(1530): 2263–2270. doi: 10.1098/rspb.2003.2497.PMCID: PMC1691497 Evolutionarily labile responses to a signal of aggressive intent. Jason A Moretz and Molly R Morris Proc Biol Sci. 2003 November 7; 270(1530): 2271–2277. doi: 10.1098/rspb.2003.2510.PMCID: PMC1691502 The development of cooperative relationships: an experiment. Gilbert Roberts and James S Renwick Proc Biol Sci. 2003 November 7; 270(1530): 2279–2283. doi: 10.1098/rspb.2003.2491.PMCID: PMC1691507 Global diversification rates of passerine birds. Robert E Ricklefs Proc Biol Sci. 2003 November 7; 270(1530): 2285–2291. doi: 10.1098/rspb.2003.2489.PMCID: PMC1691496 Echolocation range and wingbeat period match in aerial-hawking bats. M W Holderied and O von Helversen Proc Biol Sci. 2003 November 7; 270(1530): 2293–2299. doi: 10.1098/rspb.2003.2487.PMCID: PMC1691500 Characterization of the primary sonic muscles in Carapus acus (Carapidae): a multidisciplinary approach. E Parmentier, V Gennotte, B Focant, G Goffinet, and P Vandewalle Proc Biol Sci. 2003 November 7; 270(1530): 2301–2308. doi: 10.1098/rspb.2003.2495.PMCID: PMC1691505 |