Kazuo Okanoya
List of John Benjamins publications for which Kazuo Okanoya plays a role.
2019 Copulation calls in wild Mueller’s gibbons (Hylobates muelleri): A case study Interaction Studies 20:2, pp. 362–374 | Squib
Mating activity of a wild Mueller’s gibbon group (Hylobates muelleri) was observed in the Danum Valley Conservation Area, Sabah, Malaysia. The purpose of this study was to investigate the function of copulation calls in gibbons. The female emitted copulation calls at the time of intromission and… read more
2017 Combinatory rules and chunk structure in male Mueller’s gibbon songs Interaction Studies 18:1, pp. 1–25 | Article
Understanding whether the long and elaborate songs of male gibbons (Hylobates muelleri) have syntax and hierarchical structures (chunks) is an interesting question in the evolution of language, because gibbons are near humans in the phylogenetic tree and a hierarchically organized syntax is… read more
2013 Intergroup and intragroup antiphonal songs in wild male Mueller’s gibbons (Hylobates muelleri) Interaction Studies 14:1, pp. 24–43 | Article
Mueller’s gibbons (Hylobates muelleri) sing both sex-specific and duet songs. These songs are thought to be involved in territory maintenance, as well as the maintenance of pair or family bonds. However, few observational studies have examined how gibbons interact with their neighbors through song… read more
2012 Ecological correlates of song complexity in white-rumped munias: The implication of relaxation of selection as a cause for signal variation in birdsong Interaction Studies 13:2, pp. 263–284 | Article
Male white-rumped munias sing syntactically simpler songs than their domestic counterparts, Bengalese finches. The differences in song structure may reflect differences in natural selection pressures between wild and domestic environments. Deacon (2010) proposed song simplicity of the wild strain… read more