Trophic aspects of caste determination in Halictus ligatus, a primitively eusocial sweat bee Miriam H. RichardsLaurence Packer OriginalPaper Pages: 385 - 391
Effects of predation risk and hunger on the behaviour of two species of tadpoles Peter HoratRaymond D. Semlitsch OriginalPaper Pages: 393 - 401
Paternity in naturally-occurring Utetheisa ornatrix (Lepidoptera : Arctiidae) as estimated using enzyme polymorphism Craig W. LaMunyon OriginalPaper Pages: 403 - 408
Behavioral and life-history components of division of labor in honey bees (Apis mellifera L.) Ernesto Guzmán-NovoaRobert E. Page Jr.Norman E. Gary OriginalPaper Pages: 117 - 409
New birds on the block: new neighbors increase defensive costs for territorial male willow ptarmigan Perri EasonS. J. Hannon OriginalPaper Pages: 419 - 426
Resource-holding power asymmetries, the prior residence effect, and reproductive payoffs in male northern elephant seal fights Michael P. Haley OriginalPaper Pages: 427 - 434
Operational sex ratios and behavioural sex differences in a pipefish population Amanda VincentIngrid AhnesjöAnders Berglund OriginalPaper Pages: 142 - 435
Sexual selection and the evolutionary effects of copying mate choice Mark KirkpatrickLee Alan Dugatkin OriginalPaper Pages: 443 - 449
Uganda kob mating success does not increase on larger leks James C. Deutsch OriginalPaper Pages: 451 - 459