| | This journal provides immediate access to some articles. Antiquity of the biological sulphur cycle: evidence from sulphur and carbon isotopes in 2700 million-year-old rocks of the Belingwe Belt, Zimbabwe. N V Grassineau, E G Nisbet, M J Bickle, C M Fowler, D Lowry, D P Mattey, P Abell, and A Martin Proc Biol Sci. 2001 January 22; 268(1463): 113–119. doi: 10.1098/rspb.2000.1338.PMCID: PMC1088579 Genetic variation in a Pacific Island land snail: population history versus current drift and selection. S L Goodacre Proc Biol Sci. 2001 January 22; 268(1463): 121–126. doi: 10.1098/rspb.2000.1339.PMCID: PMC1088580 Selective extinction and rapid loss of evolutionary history in the bird fauna. F von Euler Proc Biol Sci. 2001 January 22; 268(1463): 127–130. doi: 10.1098/rspb.2000.1340.PMCID: PMC1088581 Back-casting sociality in extinct species: new perspectives using mass death assemblages and sex ratios. J Berger, S Dulamtseren, S Cain, D Enkkhbileg, P Lichtman, Z Namshir, G Wingard, and R Reading Proc Biol Sci. 2001 January 22; 268(1463): 131–139. doi: 10.1098/rspb.2000.1341.PMCID: PMC1088582 Explaining social learning of food preferences without aversions: an evolutionary simulation model of Norway rats. J Noble, P M Todd, and E Tuci Proc Biol Sci. 2001 January 22; 268(1463): 141–149. doi: 10.1098/rspb.2000.1342.PMCID: PMC1088583 Feeding behaviour of free-ranging penguins determined by oesophageal temperature. J B Charrassin, A Kato, Y Handrich, K Sato, Y Naito, A Ancel, C A Bost, M Gauthier-Clerc, Y Ropert-Coudert, and Y Le Maho Proc Biol Sci. 2001 January 22; 268(1463): 151–157. doi: 10.1098/rspb.2000.1343.PMCID: PMC1088584 Pyrazine odour makes visually conspicuous prey aversive. L Lindström, C Rowe, and T Guilford Proc Biol Sci. 2001 January 22; 268(1463): 159–162. doi: 10.1098/rspb.2000.1344.PMCID: PMC1088585 Primer effects of a brood pheromone on honeybee behavioural development. Y Le Conte, A Mohammedi, and G E Robinson Proc Biol Sci. 2001 January 22; 268(1463): 163–168. doi: 10.1098/rspb.2000.1345.PMCID: PMC1088586 Convergent evolution of worker policing by egg eating in the honeybee and common wasp. K R Foster and F L Ratnieks Proc Biol Sci. 2001 January 22; 268(1463): 169–174. doi: 10.1098/rspb.2000.1346.PMCID: PMC1088587 Male contributions to egg production: the role of accessory gland products and sperm in Drosophila melanogaster. Y Heifetz, U Tram, and M F Wolfner Proc Biol Sci. 2001 January 22; 268(1463): 175–180. doi: 10.1098/rspb.2000.1347.PMCID: PMC1088588 Indirect partner choice through manipulation of male behaviour by female fowl, Gallus gallus domesticus. T Pizzari Proc Biol Sci. 2001 January 22; 268(1463): 181–186. doi: 10.1098/rspb.2000.1348.PMCID: PMC1088589 The evolution of cooperative breeding through group augmentation. H Kokko, R A Johnstone, and T H Clutton-Brock Proc Biol Sci. 2001 January 22; 268(1463): 187–196. doi: 10.1098/rspb.2000.1349.PMCID: PMC1088590 The ontogeny of the homing pigeon navigational map: evidence for a sensitive learning period. A Gagliardo, P Ioalè, F Odetti, and V P Bingman Proc Biol Sci. 2001 January 22; 268(1463): 197–202. doi: 10.1098/rspb.2000.1350.PMCID: PMC1088591 Heritability of arrival date in a migratory bird. A P Møller Proc Biol Sci. 2001 January 22; 268(1463): 203–206. doi: 10.1098/rspb.2000.1351.PMCID: PMC1088592 The effects of testosterone on a viral infection in greenfinches (Carduelis chloris): an experimental test of the immunocompetence-handicap hypothesis. K M Lindström, D Krakower, J O Lundström, and B Silverin Proc Biol Sci. 2001 January 22; 268(1463): 207–211. doi: 10.1098/rspb.2000.1352.PMCID: PMC1088593 Long-distance interactions in Cyclopean vision. R P Kohly and D Regan Proc Biol Sci. 2001 January 22; 268(1463): 213–219. doi: 10.1098/rspb.2000.1353.PMCID: PMC1088594 |