Reproduction under light pollution : maladaptive response to spatial variation in artificial light in a glow-worm

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http://hdl.handle.net/10138/318283

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Elgert , C B C , Hopkins , J , Kaitala , A L & Candolin , U 2020 , ' Reproduction under light pollution : maladaptive response to spatial variation in artificial light in a glow-worm ' , Proceedings of the Royal Society B. Biological Sciences , vol. 287 , no. 1931 , 20200806 . https://doi.org/10.1098/rspb.2020.0806

Title: Reproduction under light pollution : maladaptive response to spatial variation in artificial light in a glow-worm
Author: Elgert, Christina Barbro Cecilia; Hopkins, Juhani; Kaitala, Arja Leena; Candolin, Ulrika
Contributor organization: Organismal and Evolutionary Biology Research Programme
Tvärminne Zoological Station
Behavioural Ecology - Candolin Research Lab
Helsinki Institute of Sustainability Science (HELSUS)
Biosciences
Date: 2020-07-29
Language: eng
Number of pages: 7
Belongs to series: Proceedings of the Royal Society B. Biological Sciences
ISSN: 0962-8452
DOI: https://doi.org/10.1098/rspb.2020.0806
URI: http://hdl.handle.net/10138/318283
Abstract: The amount of artificial light at night is growing worldwide, impacting the behaviour of nocturnal organisms. Yet, we know little about the consequences of these behavioural responses for individual fitness and population viability. We investigated if females of the common glow-wormLampyris noctiluca-which glow in the night to attract males-mitigate negative effects of artificial light on mate attraction by adjusting the timing and location of glowing to spatial variation in light conditions. We found females do not move away from light when exposed to a gradient of artificial light, but delay or even refrain from glowing. Further, we demonstrate that this response is maladaptive, as our field study showed that staying still when exposed to artificial light from a simulated streetlight decreases mate attraction success, while moving only a short distance from the light source can markedly improve mate attraction. These results indicate that glow-worms are unable to respond to spatial variation in artificial light, which may be a factor in their global decline. Consequently, our results support the hypothesis that animals often lack adaptive behavioural responses to anthropogenic environmental changes and underlines the importance of considering behavioural responses when investigating the effects of human activities on wildlife.
Subject: 1181 Ecology, evolutionary biology
ALAN
environmental change
Lampyridae
mate choice
sexual selection
signal
COMPETITIVE INTERACTIONS
BEHAVIORAL-RESPONSES
NOCTILUCA L.
NIGHT
COLEOPTERA
EVOLUTION
LAMPYRIDAE
IMPACTS
TRENDS
COLOR
Peer reviewed: Yes
Rights: cc_by
Usage restriction: openAccess
Self-archived version: publishedVersion


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