Island and island-like effects on vocal repertoire of singing honeyeaters

Citation
Mc. Baker et al., Island and island-like effects on vocal repertoire of singing honeyeaters, ANIM BEHAV, 62, 2001, pp. 767-774
Citations number
39
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Animal Sciences","Neurosciences & Behavoir
Journal title
ANIMAL BEHAVIOUR
ISSN journal
0003-3472 → ACNP
Volume
62
Year of publication
2001
Part
4
Pages
767 - 774
Database
ISI
SICI code
0003-3472(200110)62:<767:IAIEOV>2.0.ZU;2-E
Abstract
In this study of songs of the singing honeyeater, Meliphaga virescens, we e xamined the consequences of isolation on the meme pool of syllables from wh ich songs are constructed. We sampled four populations in Western Australia , two of which were sampled 7 years earlier. One mainland sample area, with a large number of syllable types, is part of a geographically extensive po pulation whereas the other three samples with smaller syllable pools are fr om isolated island or island-like populations. The reduction in size of syl lable repertoires of the more isolated populations may have resulted from f ounder effect. Comparisons over the 7-year period indicated that the popula tion proportions of the syllable ty es did not change, significantly in eit her of the two resampled populations, although the correlation between samp le years was stronger in the mainland population than in that of the island . In the two resampled populations, we found some new syllables, but some t hat were present 7 years earlier were missing. Two new syllables appear to have been derived from ones present in the earlier sample, perhaps represen ting cultural drift. (C) 2001 The Association for the Study of Animal Behav iour.