Effects of lifetime exposure to artificial light at night on cricket (Teleogryllus commodus) courtship and mating behaviour

Animal Behaviour, Journal Year: 2017, Volume and Issue: 129, P. 181 - 188

Published: June 22, 2017

Language: Английский

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Global macroevolution and macroecology of passerine song

Evolution, Journal Year: 2018, Volume and Issue: 72(4), P. 944 - 960

Published: Feb. 14, 2018

Studying the macroevolution of songs Passeriformes (perching birds) has proved challenging. The complexity task stems not just from macroevolutionary and macroecological challenge modeling so many species, but also difficulty in collecting quantifying birdsong itself. Using machine learning techniques, we extracted a large citizen science dataset, then analyzed evolution, biotic abiotic predictors variation across 578 passerine species. Contrary to expectations, found few links between life‐history traits (monogamy sexual dimorphism) evolution song pitch (peak frequency) or (standard deviation frequency). However, significant support for morphological constraints on birdsong, as reflected negative correlation bird size pitch. We that broad‐scale biogeographical climate factors such net primary productivity, temperature, regional species richness were significantly associated with both present‐day distribution features. Our analysis integrates comparative spatial newly developed data cleaning curation tools, suggests evolutionary history, morphology, ecological processes shape diversity these charismatic important birds.

Language: Английский

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Acoustic adaptation to city noise through vocal learning by a songbird

Proceedings of the Royal Society B Biological Sciences, Journal Year: 2018, Volume and Issue: 285(1888), P. 20181356 - 20181356

Published: Oct. 10, 2018

Anthropogenic noise imposes novel selection pressures, especially on species that communicate acoustically. Many animals—including insects, frogs, whales and birds—produce sounds at higher frequencies in areas with low-frequency pollution. Although there is support for animals changing their vocalizations real time response to (i.e. immediate flexibility), other evolutionary mechanisms learn remain largely unexplored. We hypothesize cultural signal structures less masked by a mechanism of acoustic adaptation anthropogenic noise. test this hypothesis presenting nestling white-crowned sparrows ( Zonotrichia leucophyrs ) less-masked (higher-frequency) more-masked (lower-frequency) tutor songs either during playback (noise-tutored treatment) or different from (control treatment). As predicted, we find noise-tutored males significantly more often, whereas control show no copying preference, providing strong experimental Further, reproduce than tutor, indicating distinct increase transmission noisy environment. Notably, achieve lower performance tutors, suggesting potential costs sexual framework.

Language: Английский

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White‐crowned sparrow males show immediate flexibility in song amplitude but not in song minimum frequency in response to changes in noise levels in the field

Ecology and Evolution, Journal Year: 2017, Volume and Issue: 7(13), P. 4991 - 5001

Published: May 31, 2017

Abstract The soundscape acts as a selective agent on organisms that use acoustic signals to communicate. A number of studies document variation in structure, amplitude, or timing signal production correspondence with environmental noise levels thus supporting the hypothesis are changing their signaling behaviors avoid masking. time scale at which respond is particular interest. Signal structure may evolve across generations through processes such cultural genetic transmission. Individuals also change behavior during development (ontogenetic change) real (i.e., immediate flexibility). These not mutually exclusive mechanisms, and all must be investigated understand how selection pressures from soundscape. Previous work white‐crowned sparrows ( Zonotrichia leucophrys ) found males holding territories louder areas tend sing higher frequency songs both song have increased over (30 years) urban areas. previous findings suggest generations; however, it known if this species exhibits flexibility. Here, we conducted an exploratory, observational study ask whether minimum response changes levels. We louder, physiologically linked producing sound amplitudes, noise. territorial adjust amplitude but Our results do show flexibility frequency, although experimental manipulations needed test further. highlights need investigate multiple mechanisms adaptive soundscapes.

Language: Английский

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Song adjustments by an open habitat bird to anthropogenic noise, urban structure, and vegetation

Behavioral Ecology, Journal Year: 2016, Volume and Issue: unknown, P. arw105 - arw105

Published: July 1, 2016

Urban environments challenge animals with 2 novel impediments to communication: low-frequency anthropogenic noise, which masks vocalizations, and large sound-reflecting structures, contribute reverberation. We studied spectral temporal traits of trill songs chipping sparrows (Spizella passerina), a species historically found in open grassland habitat, understand how urban structure, vegetation affected song traits. On the basis features, males clustered into groups. Males that had lower minimum frequencies broader bandwidths increased frequency decreased increasing vegetation. higher narrower bandwidth but made no adjustments noise or structure. To maintain high vocal performance songs, should increase rates compensate for decreases bandwidth, they did not change this trait. As result, declined across all Finally, peak suggesting put more energy their possibly improve sound transmission human-built environments. Overall, both structure influenced features limited effects timing. Sound reflections from structures may have strong, underappreciated, influence on animal communication, compound challenges singing noise.

Language: Английский

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Immediate signaling flexibility in response to experimental noise in urban, but not rural, white‐crowned sparrows

Ecosphere, Journal Year: 2017, Volume and Issue: 8(8)

Published: Aug. 1, 2017

Abstract Background noise can interfere with acoustic communication. Signal modifications have the potential to increase signal‐to‐noise ratios and reduce masking effect of noise. Immediate signaling flexibility, a type vocal plasticity, allows animals modify their signal optimize transmission depending on ambient conditions. Results from previous studies provide conflicting evidence about whether expression immediate flexibility is dependent upon signaler having prior experience noisy environments. To improve our understanding we examined in white‐crowned sparrows Zonotrichia leucophrys nuttalli urban rural locations. We experimentally broadcast three different spectral profiles—city (low frequency), inverse city (high white (equal intensity at all frequencies)—successfully 107 males measured multiple features songs produced during experiment. predicted that would adjust song structure broadcast, but extent plasticity be greater noisier territories manner adjustment depend experimental broadcast. Instead, found only exhibit through which bandwidth decreases response modification did not change or territory background Although were less flexible than predicted, relative reduction birds could ratio

Language: Английский

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Using the Past to Understand the Present: Coping with Natural and Anthropogenic Noise

BioScience, Journal Year: 2020, Volume and Issue: 71(3), P. 223 - 234

Published: Dec. 9, 2020

ABSTRACT Anthropogenic noise has received significant attention in recent years, and researchers have highlighted the ways which animals might deal with these sources. However, much of our understanding animal responses to this novel source background acoustics lacks an evolutionary perspective. Natural sources predate origin hearing organs animals. Therefore, it is unlikely that only recently evolved strategies cope anthropogenic de novo but, rather, already preexisting coping mechanisms, because countless generations evolution within a naturally noisy world, on contemporary selection now likely acting. We review natural suggest more quantitative mechanistic how particular characteristics shaped populations communities past, enabling us predict effects will future.

Language: Английский

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Preliminary assessment of habitat uses and time budget by an urban group of white-footed tamarins (Oedipomidas leucopus, Callitrichidae)

Actualidades Biológicas, Journal Year: 2025, Volume and Issue: 74(122)

Published: Jan. 1, 2025

High levels of species diversity and endemism in developing countries contrast with a dramatic expansion human populations urban development. This poses challenge for wildlife their ability to adapt transformed fragmented habitats. In the Neotropics, tamarins marmosets (Primates: Callitrichidae) have established urbanized areas, including White-footed tamarin north-western Colombia, where it is prone metabolic syndrome presumably due nutritional issues reduced physical activity. We conducted an exploratory analysis habitat use activity budget group isolated forest patch Medellín, Colombia over 12-month period. applied multiple linear regressions assess 1) seasonal variation diet 2) role landscape features on available habitat. Resting was most dominant behavior. The comprised range animal plant items as well smaller proportion anthropogenic food. showed inverse relationship within-month humidity variation, indicating adaptation changes. area associated tree density abundance key that are either consumed or used part corridors. Our results suggest plasticity generalist habits may be favored adapted but food oversupply lead sedentarism compromise health fauna. Strategic planting provide sources facilitate dispersal recommended.

Language: Английский

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Ecological Impacts of Recreational Transformation and War on Bird Communities in the Siverskyi Donets River Floodplain: Diversity, Synanthropization, and Restoration Strategies

Environmental Challenges, Journal Year: 2025, Volume and Issue: unknown, P. 101144 - 101144

Published: March 1, 2025

Language: Английский

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Vocal performance is a salient signal for male–male competition in White-crowned Sparrows

Ornithology, Journal Year: 2017, Volume and Issue: 134(3), P. 564 - 574

Published: May 10, 2017

Vocal communication in songbirds is important for aggressive signaling, such that an honest signal allows receivers to assess a competitor's qualities. One aspect of song conspecifics may vocal performance. An example performance how well individual performs the trade-off between trill rate and bandwidth production repeated notes. This type (vocal deviation) thought be because male's ability maximize both limited by motor constraints on sound modification. Further, male can repeat this provide with information about signaler, own level affect strength response high-performance songs. We tested whether males each other based model species, White-crowned Sparrow (Zonotrichia leucophrys). show Sparrows respond more strongly songs than lower-performance 2 different locations, supporting hypothesis utilize competitors. also initial evidence varies among repeatable within individuals.

Language: Английский

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