Ecological light pollution affects anuran calling season, daily calling period, and sensitivity to light in natural Brazilian wetlands

Dias, Karina Soares; Dosso, Elisa Stuani; Hall, Alexander S.; Schuch, André Passaglia; Tozetti, Alexandro Marques

doi:10.1007/s00114-019-1640-y

Cited by 19 publications

(15 citation statements)

References 30 publications

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“…ALAN decreased metamorphic duration and juvenile growth in American toads (Anaxyrus americanus) [73], and reduced activity and altered energy allocation in common toads (Bufo bufo) [74]. Furthermore, a shift and shortening of the calling season of male Brazilian anurans was measured in a light-polluted wetland as compared to a similar site without light pollution [75]. Mate choice behavior was found to be unaltered under light pollution in Eastern gray treefrog (Hyla versicolor) females [76].…”

Section: Amphibiansmentioning

confidence: 93%

Light Pollution, Circadian Photoreception, and Melatonin in Vertebrates

et al. 2019

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Artificial light at night (ALAN) is increasing exponentially worldwide, accelerated by the transition to new efficient lighting technologies. However, ALAN and resulting light pollution can cause unintended physiological consequences. In vertebrates, production of melatonin—the “hormone of darkness” and a key player in circadian regulation—can be suppressed by ALAN. In this paper, we provide an overview of research on melatonin and ALAN in vertebrates. We discuss how ALAN disrupts natural photic environments, its effect on melatonin and circadian rhythms, and different photoreceptor systems across vertebrate taxa. We then present the results of a systematic review in which we identified studies on melatonin under typical light-polluted conditions in fishes, amphibians, reptiles, birds, and mammals, including humans. Melatonin is suppressed by extremely low light intensities in many vertebrates, ranging from 0.01–0.03 lx for fishes and rodents to 6 lx for sensitive humans. Even lower, wavelength-dependent intensities are implied by some studies and require rigorous testing in ecological contexts. In many studies, melatonin suppression occurs at the minimum light levels tested, and, in better-studied groups, melatonin suppression is reported to occur at lower light levels. We identify major research gaps and conclude that, for most groups, crucial information is lacking. No studies were identified for amphibians and reptiles and long-term impacts of low-level ALAN exposure are unknown. Given the high sensitivity of vertebrate melatonin production to ALAN and the paucity of available information, it is crucial to research impacts of ALAN further in order to inform effective mitigation strategies for human health and the wellbeing and fitness of vertebrates in natural ecosystems.

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Section: Amphibiansmentioning

confidence: 93%

Light Pollution, Circadian Photoreception, and Melatonin in Vertebrates

et al. 2019

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“…A total of 216 studies were identified. These studies included behavioral and physiological responses in plants [59][60][61][62][63][64][65][66][67][68][69][70][71][72][73][74][75][76][77]; arthropods, including insects and spiders [71,; fish ; amphibians [148][149][150][151][152][153][154][155][156][157][158][159]; reptiles [160][161][162][163][164][165][166][167]; birds ; and non-human mammals, including bats, primates, rodents, and marsupials [24,160,161,174,, when their habitats, aquatic or terrestrial, were artificially illuminated with direct or indirect emissions of ALAN (i.e., all light sources of artificial light). The results of our systematic review show that the most studied organism groups exposed to night-time illumination were birds (76 studies); arthropods, insects and spiders (43 studies); non-human mammals, including bats, primates, rodents, and marsupials (30...…”

Section: Impact Of Artificial Lighting On Organism Groupsmentioning

confidence: 99%

“…ALAN was reported to alter amphibian behavioral responses, including the preference for shelter [148]; attraction toward urban edges, which might lead to an altered passage choice of habitats typically visited [149,150]; altered vocalization calls [151,152]; altered detection and consumption of prey [153]; altered attempts to capture prey [154]; increased activity [155]; and mate selection and reproductive success [156].…”

Section: Amphibiansmentioning

confidence: 99%

A Systematic Review for Establishing Relevant Environmental Parameters for Urban Lighting: Translating Research into Practice

et al. 2022

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The application of lighting technologies developed in the 20th century has increased the brightness and changed the spectral composition of nocturnal night-time habitats and night skies across urban, peri-urban, rural, and pristine landscapes, and subsequently, researchers have observed the disturbance of biological rhythms of flora and fauna. To reduce these impacts, it is essential to translate relevant knowledge about the potential adverse effects of artificial light at night (ALAN) from research into applicable urban lighting practice. Therefore, the aim of this paper is to identify and report, via a systematic review, the effects of exposure to different physical properties of artificial light sources on various organism groups, including plants, arthropods, insects, spiders, fish, amphibians, reptiles, birds, and non-human mammals (including bats, rodents, and primates). PRISMA 2020 guidelines were used to identify a total of 1417 studies from Web of Science and PubMed. In 216 studies, diverse behavioral and physiological responses were observed across taxa when organisms were exposed to ALAN. The studies showed that the responses were dependent on high illuminance levels, duration of light exposure, and unnatural color spectra at night and also highlighted where research gaps remain in the domains of ALAN research and urban lighting practice. To avoid misinterpretation, and to define a common language, key terminologies and definitions connected to natural and artificial light have been provided. Furthermore, the adverse impacts of ALAN urgently need to be better researched, understood, and managed for the development of future lighting guidelines and standards to optimize sustainable design applications that preserve night-time environment(s) and their inhabiting flora and fauna.

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“…Regardless of the precise mechanisms at play, breeding activity within these “windows of opportunity” is likely to confer some adaptive benefits. Despite many studies documenting temporal shifts in communication in relation to anthropogenic sensory pollution ( Arroyo-Solís et al 2013 ; Nordt and Klenke 2013 ; Silva et al 2014 ; Dias et al 2019 ; Alquezar et al 2020 ), the potential fitness consequences of these shifts are often unclear, due to a lack of information on the costs and benefits.…”

Section: Introductionmentioning

confidence: 99%

Anthropogenic noise and light alter temporal but not spatial breeding behavior in a wild frog

2022

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Increasing urbanization has led to large-scale land-use changes, exposing persistent populations to drastically altered environments. Sensory pollutants, including low-frequency anthropogenic noise and artificial light at night (ALAN), are typically associated with urban environments and known to impact animal populations in a variety of ways. Both ALAN and anthropogenic noise can alter behavioral and physiological processes important for survival and reproduction, including communication and circadian rhythms. Although noise and light pollution typically co-occur in urbanized areas, few studies have addressed their combined impact on species’ behavior. Here, we assessed how anthropogenic noise and ALAN can influence spatial and temporal variation in breeding activity of a wild frog population. By exposing artificial breeding sites inside a tropical rainforest to multiple sensory environments, we found that both anthropogenic noise and ALAN impact breeding behavior of túngara frogs (Engystomops pustulosus), albeit in different ways. Males arrived later in the night at their breeding sites in response to anthropogenic noise. ALAN, on the other hand, led to an increase in calling effort. We found no evidence that noise or light pollution either attracted frogs to or repelled frogs from breeding sites. Thus, anthropogenic noise may negatively affect calling males by shifting the timing of sexual signaling. Conversely, ALAN may increase the attractiveness of calling males. These changes in breeding behavior highlight the complex ways that urban multisensory pollution can influence behavior and suggest that such changes may have important ecological implications for the wildlife that are becoming increasingly exposed to urban multisensory pollution.

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Ecological light pollution affects anuran calling season, daily calling period, and sensitivity to light in natural Brazilian wetlands

Cited by 19 publications

References 30 publications

Light Pollution, Circadian Photoreception, and Melatonin in Vertebrates

Light Pollution, Circadian Photoreception, and Melatonin in Vertebrates

A Systematic Review for Establishing Relevant Environmental Parameters for Urban Lighting: Translating Research into Practice

Anthropogenic noise and light alter temporal but not spatial breeding behavior in a wild frog

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