Urban sparrows respond to a sexually selected trait with increased aggression in noise

Abstract Animals modify acoustic communication signals in response to noise pollution, but consequences of these modifications are unknown. Vocalizations that transmit best in noise may not be those that best signal male quality, leading to potential conflict between selection pressures. For example...

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Autores principales:	Jennifer N. Phillips, Elizabeth P. Derryberry
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2018
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/7ef1592546324390b0365b09edc28764
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spelling	oai:doaj.org-article:7ef1592546324390b0365b09edc287642021-12-02T11:40:25ZUrban sparrows respond to a sexually selected trait with increased aggression in noise10.1038/s41598-018-25834-62045-2322https://doaj.org/article/7ef1592546324390b0365b09edc287642018-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-018-25834-6https://doaj.org/toc/2045-2322Abstract Animals modify acoustic communication signals in response to noise pollution, but consequences of these modifications are unknown. Vocalizations that transmit best in noise may not be those that best signal male quality, leading to potential conflict between selection pressures. For example, slow paced, narrow bandwidth songs transmit better in noise but are less effective in mate choice and competition than fast paced, wide bandwidth songs. We test the hypothesis that noise affects response to song pace and bandwidth in the context of competition using white-crowned sparrows (Zonotrichia leucophrys). We measure male response to song variation along a gradient of ambient noise levels in San Francisco, CA. We find that males discriminate between wide and narrow bandwidth songs but not between slow and fast paced songs. These findings are biologically relevant because songs in noisy areas tend to have narrow bandwidths. Therefore, this song phenotype potentially increases transmission distance in noise, but elicits weaker responses from competitors. Further, we find that males respond more strongly to stimuli in noisier conditions, supporting the ‘urban anger’ hypothesis. We suggest that noise affects male responsiveness to song, possibly leading to more territorial conflict in urban areas.Jennifer N. PhillipsElizabeth P. DerryberryNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 8, Iss 1, Pp 1-10 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Jennifer N. Phillips Elizabeth P. Derryberry Urban sparrows respond to a sexually selected trait with increased aggression in noise
description	Abstract Animals modify acoustic communication signals in response to noise pollution, but consequences of these modifications are unknown. Vocalizations that transmit best in noise may not be those that best signal male quality, leading to potential conflict between selection pressures. For example, slow paced, narrow bandwidth songs transmit better in noise but are less effective in mate choice and competition than fast paced, wide bandwidth songs. We test the hypothesis that noise affects response to song pace and bandwidth in the context of competition using white-crowned sparrows (Zonotrichia leucophrys). We measure male response to song variation along a gradient of ambient noise levels in San Francisco, CA. We find that males discriminate between wide and narrow bandwidth songs but not between slow and fast paced songs. These findings are biologically relevant because songs in noisy areas tend to have narrow bandwidths. Therefore, this song phenotype potentially increases transmission distance in noise, but elicits weaker responses from competitors. Further, we find that males respond more strongly to stimuli in noisier conditions, supporting the ‘urban anger’ hypothesis. We suggest that noise affects male responsiveness to song, possibly leading to more territorial conflict in urban areas.
format	article
author	Jennifer N. Phillips Elizabeth P. Derryberry
author_facet	Jennifer N. Phillips Elizabeth P. Derryberry
author_sort	Jennifer N. Phillips
title	Urban sparrows respond to a sexually selected trait with increased aggression in noise
title_short	Urban sparrows respond to a sexually selected trait with increased aggression in noise
title_full	Urban sparrows respond to a sexually selected trait with increased aggression in noise
title_fullStr	Urban sparrows respond to a sexually selected trait with increased aggression in noise
title_full_unstemmed	Urban sparrows respond to a sexually selected trait with increased aggression in noise
title_sort	urban sparrows respond to a sexually selected trait with increased aggression in noise
publisher	Nature Portfolio
publishDate	2018
url	https://doaj.org/article/7ef1592546324390b0365b09edc28764
work_keys_str_mv	AT jennifernphillips urbansparrowsrespondtoasexuallyselectedtraitwithincreasedaggressioninnoise AT elizabethpderryberry urbansparrowsrespondtoasexuallyselectedtraitwithincreasedaggressioninnoise
_version_	1718395654744571904

Urban sparrows respond to a sexually selected trait with increased aggression in noise

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