A simple learning strategy that realizes robust cooperation better than Pavlov in Iterated Prisoners' Dilemma J. Y. WakanoN. Yamamura ARTICLE Pages: 1 - 8
Activity budgets of wild female chimpanzees in different reproductive states A. Matsumoto-OdaR. Oda ARTICLE Pages: 17 - 21
Foraging behavior of the American oystercatcher Haematopus palliatus pitanay (Murphy 1925) on the intertidal ascidian Pyura praeputialis (Heller 1878) in the Bay of Antofagasta, Chile C. J. PachecoJ. C. Castilla ARTICLE Pages: 23 - 26
Apparent decoupling of prey recognition ability with prey availability in an insular snake population K. TanakaA. MoriM. Hasegawa ARTICLE Pages: 27 - 32
Heritability of male secondary sexual traits in feral guppies in Japan K. KarinoY. Haijima ARTICLE Pages: 33 - 37
Incubation ability of the functional envelope in paper wasp nests (Hymenopteta, Vespidae, Polistes): I. Field measurements of nest temperature using paper models S. HozumiS. Yamane ARTICLE Pages: 39 - 46
Overlapping oviposition and chemical defense of eggs in two co-occurring species of ladybird predators of aphids B. K. AgarwalaH. Yasuda ARTICLE Pages: 47 - 53
Why are there feeding and nonfeeding larvae in phytoseiid mites (Acari, Phytoseiidae)? A. R. ChittendenY. Saito ARTICLE Pages: 55 - 62
Egg-depositing behavior as a predator avoidance tactic of Yezonychus sapporensis Ehara (Acari, Tetranychidae) H. YanagidaY. SaitoA. R. Chittenden ARTICLE Pages: 63 - 66