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Author Arnaud Da Silva, Jelmer M. Samplonius, Emmi Schlicht, Mihai Valcu, Bart Kempenaers
Title Artificial night lighting rather than traffic noise affects the daily timing of dawn and dusk singing in common European songbirds Type Journal Article
Year 2014 Publication (up) Behavioral Ecology Abbreviated Journal
Volume 25 Issue 5 Pages 1037-1047
Keywords animal, birds, dawn chorus, dusk chorus, light intensity, light pollution, noise pollution, seasonality, songbird, weather
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Call Number LoNNe @ schroer @ Serial 1105
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Author Gil, D.; Honarmand, M.; Pascual, J.; Perez-Mena, E.; Macias Garcia, C.
Title Birds living near airports advance their dawn chorus and reduce overlap with aircraft noise Type Journal Article
Year 2015 Publication (up) Behavioral Ecology Abbreviated Journal Behavioral Ecology
Volume 26 Issue 2 Pages 435-443
Keywords Animals
Abstract Anthropogenic noise is a major pollutant for organisms that live in urban areas. City birds modify their songs in ways that can increase their communication potential in spite of noise. However, these changes cannot prevent song masking by the extremely loud noises to which some urban bird populations are exposed. Here, we show that birds near a major airport advance their dawn singing time, thus reducing overlap with periods of intense aircraft noise. This modification was stronger in species whose normal singing time was relatively late, those which overlapped the most with aircraft noise. Although suggestive of a causal relationship, this pattern does not allow us to tell apart the effect of aircraft noise from that of other variables that may correlate with dawn singing time. In order to control for such potentially confounding variables, we replicated the study in several airports at different latitudes in Spain and Germany. The results show that indeed the overlap of song chorus with aircraft noise was the key factor that influenced time advancement. Aircraft traffic time was the main predictor of song advancement: across Europe, those bird populations whose singing time overlapped the most with aircraft traffic were those that advanced their song timing to a higher extent. Our results exemplify how behavioral plasticity may allow the survival of avian populations in areas of high noise pollution. However, such an adaptation likely involves departing from optimal singing times, leading to higher energetic costs and amplifying between-species differences in competitive ability and resilience.
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ISSN 1045-2249 ISBN Medium
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Notes Approved no
Call Number LoNNe @ kyba @ Serial 1532
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Author Girard, M.B.; Kasumovic, M.M.; Elias, D.O.
Title The role of red coloration and song in peacock spider courtship: insights into complex signaling systems Type Journal Article
Year 2018 Publication (up) Behavioral Ecology Abbreviated Journal
Volume in press Issue Pages
Keywords Animals
Abstract Research on animal signaling enhances our understanding of links between sensory processing, decision making, behavior, and evolution. Studies of sexually-selected signals may be particularly informative as mate choice provides access to decision patterns in the way that courtship leads to an easily observable behavioral output in choosers, i.e., mating. Male peacock spiders have some of the most elaborate and varied courtship displays known among animals. Particularly striking to human observers is the diversity of red, orange, and yellow ornaments that males exhibit across the genus. The primary objective of our research was to investigate how these visual ornaments interact with vibratory songs to affect female mating behavior of one species, Maratus volans. Accordingly, we conducted mating trials under a series of experimentally manipulated vibratory and lighting conditions. Contrary to expectation, chromatic characteristics of longer wavelength ornaments are not driving female mate choice decisions, despite their extensive presence on male fans. Instead, our results suggest that contrast is important to females. Additionally, we found that vibratory signals were not necessary and did not increase mating rates. Our study demonstrates the intricacies inherent in complex signaling systems.
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ISSN 1045-2249 ISBN Medium
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Call Number GFZ @ kyba @ Serial 2027
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Author Clarke, J.A.
Title Moonlight's influence on predator/prey interactions between short-eared owls (Asio flammeus) and deermice (Peromyscus maniculatus) Type Journal Article
Year 1983 Publication (up) Behavioral Ecology and Sociobiology Abbreviated Journal Behav Ecol Sociobiol
Volume 13 Issue 3 Pages 205-209
Keywords Animals
Abstract This study examines the effect of moonlight intensity on deermouse (Peromyscus maniculatus) vulnerability to predation by short-eared owls (Asio flammeus).

Three nocturnal light intensities, labeled new moon, quarter moon, and full moon, were simulated in a flight chamber. Deermouse activity was observed and measured by an index of tracking intensity in the chamber's sand floor. The mice were then exposed to predation by a short-eared owl in each light intensity and search time, chase time, capture time, and the number of escapes/chase were measured.

The results reveal the adaptive significance of deermouse activity suppression in full moon light as an anti-predator response. The deermice reduced activity significantly in bright moonlight during the activity phases. During the predation phases, the owls' hunting effectiveness increased as moonlight waxed. The owls required significantly less time to search for and capture the mice as illumination increased.

The costs and benefits to both species are discussed relative to the prey's variation of activity with moonlight intensity.
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ISSN 0340-5443 ISBN Medium
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Call Number LoNNe @ christopher.kyba @ Serial 421
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Author Heiling, A.M.
Title Why do nocturnal orb-web spiders (Araneidae) search for light? Type Journal Article
Year 1999 Publication (up) Behavioral Ecology and Sociobiology Abbreviated Journal Behavioral Ecology and Sociobiology
Volume 46 Issue 1 Pages 43-49
Keywords Animals
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ISSN 0340-5443 ISBN Medium
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Notes Approved no
Call Number LoNNe @ kagoburian @ Serial 671
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