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Prosodic analysis and Asian linguistics : to Honour R.K. Sprigg
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Sound perspectives? Speech and speaker dynamics over a century of Scottish English
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Space in Lisu
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In: Himalayan Linguistics, vol 16, iss 1 (2017)
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Space in Lisu
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In: Bradley, David. (2017). Space in Lisu. Himalayan Linguistics, 16(1). doi:10.5070/H916130216. Retrieved from: http://www.escholarship.org/uc/item/2z85b7bv (2017)
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Lahu dialects
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Bradley, David. - : Canberra : Faculty of Asian Studies in association with Australian National University Press, 2017
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The Complexity of Standing Postural Control in Older Adults: A Modified Detrended Fluctuation Analysis Based upon the Empirical Mode Decomposition Algorithm
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Local-foreign dialect discrimination and responses to mixed-dialect duets in the North Island kokako
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Abstract:
Social discrimination based on geographic variation in territorial signals is taxonomically widespread—most studies have found stronger reactions to local than to foreign signals. In birds with male-only song, this discrimination is thought to result in social exclusion and has been suggested as a behavioral barrier to interpopulation genetic exchange. However, little information exists on duetting species in this context, and nothing is known of how “mixed-dialect” pairs are perceived, despite their confirmed occurrence. We addressed these deficiencies using a duetting, endangered Passerine, the kōkako ( Callaeas wilsoni ). We used reciprocal stereo playback experiments between 2 fragmented populations to present duets from local and foreign dialects (Experiment 1). Additionally, we assessed responses to mixed-dialect pairs by synthesizing duets, a novel technique, to determine which sex contributes the most salient duet components (Experiment 2). Territorial pairs vocally responded to local duets with less delay, and produced more song phrases with a lower diversity, than they did in response to playback of foreign duets. Pairs responded to mixed-dialect duets with equal overall strength regardless of the sex of the local component. Responses to mixed and pure local duets were qualitatively similar. From an evolutionary perspective, this suggests that mixed-dialect pairs can successfully defend territories without social penalties, improving the likelihood of cross-dialect gene flow. These findings have particular importance for conservation efforts like translocation, which often involve individuals from multiple, culturally distinct populations.
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Keyword:
Research Article
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URL: https://doi.org/10.1093/beheco/ars201 http://beheco.oxfordjournals.org/cgi/content/short/24/2/570
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Local-foreign dialect discrimination and responses to mixed-dialect duets in the North Island kokako
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Post-translocation assortative pairing and social implications for the conservation of an endangered songbird
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Local-foreign dialect discrimination and responses to mixed-dialect duets in the North Island kokako
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Evolutionary Significance and Conservation Implications of Vocal Dialects in North Island Kōkako (Callaeas wilsoni)
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