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Author Kim, K.‐N.; Sin, U.‐C.; Jo, Y.‐C.; Huang, Z.‐J.; Hassan, A.; Huang, Q.‐Y.; Lei, C.‐L.
Title Influence of green light at night on Juvenile hormone in the oriental armywormMythimna separata(Lepidoptera: Noctuidae) Type Journal Article
Year 2019 Publication Physiological Entomology Abbreviated Journal Physiol. Entomol.
Volume (up) in press Issue Pages
Keywords Animals
Abstract The oriental armyworm Mythimna separata is an agricultural insect pest in Eastern Asia. Mythimna separata moths have a high phototactic response to green (520 nm) light. The biological characteristics of insects living under light of a specific wavelength at night can change and, accordingly, Juvenile hormone (JH) levels may be influenced by this light. The present study evaluates changes in the total JH levels at different developmental stages (larvae, pupae and adults) of M. separata reared under green light with different exposure periods at night (or dark period). The results show that, when the exposure time per day of the green light at night is extended, the JH levels in the final‐instar larvae (22 days) and older age pupae (8 days) are significantly reduced, and the JH levels in earlier age pupae (4 days) and adults (3, 6 and 9 days) are significantly increased, compared with groups not exposed to green light. Additionally, the JH level of male moths significantly differs from that of the female moths. We suggest that the JH level of M. separata insects could be regulated by the green light at night (or dark period). The findings of the present study will help to explain the relationship between the light environment and biological characteristics in nocturnal moths.
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ISSN 0307-6962 ISBN Medium
Area Expedition Conference
Notes Approved no
Call Number GFZ @ kyba @ Serial 2596
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Author Horton, K.G.; Nilsson, C.; Van Doren, B.M.; La Sorte, F.A.; Dokter, A.M.; Farnsworth, A.
Title Bright lights in the big cities: migratory birds’ exposure to artificial light Type Journal Article
Year 2019 Publication Frontiers in Ecology and the Environment Abbreviated Journal Front Ecol Environ
Volume (up) in press Issue Pages
Keywords Animals
Abstract Many species of migratory birds have evolved the ability to migrate at night, and the recent and rapid expansion of artificial light at night has markedly altered the nighttime sky through which they travel. Migrating birds regularly pass through heavily illuminated landscapes, and bright lights affect avian orientation. But risks to migrating birds from artificial light are not spatially or temporally uniform, representing a challenge for mitigating potential hazards and developing action plans to catalog risks at continental scales. We leveraged over two decades of remote‐sensing data collected by weather surveillance radar and satellite‐based sensors to identify locations and times of year when the highest numbers of migrating birds are exposed to light pollution in the contiguous US. Our continental‐scale quantification of light exposure provides a novel opportunity for dynamic and targeted conservation strategies to address the hazards posed by light pollution to nocturnally migrating birds.
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ISSN 1540-9295 ISBN Medium
Area Expedition Conference
Notes Approved no
Call Number GFZ @ kyba @ Serial 2285
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Author Lundberg, L.; Sienkiewicz, Z.; Anthony, D.C.; Broom, K.A.
Title Effects of 50 Hz magnetic fields on circadian rhythm control in mice Type Journal Article
Year 2019 Publication Bioelectromagnetics Abbreviated Journal Bioelectromagnetics
Volume (up) in press Issue Pages
Keywords Animals
Abstract Artificial light and power frequency magnetic fields are ubiquitous in the built environment. Light is a potent zeitgeber but it is unclear whether power frequency magnetic fields can influence circadian rhythm control. To study this possibility, 8-12-week-old male C57BL/6J mice were exposed for 30 min starting at zeitgeber time 14 (ZT14, 2 h into the dark period of the day) to 50 Hz magnetic fields at 580 muT using a pair of Helmholtz coils and/or a blue LED light at 700 lux or neither. Our experiments revealed an acute adrenal response to blue light, in terms of increased adrenal per1 gene expression, increased serum corticosterone levels, increased time spent sleeping, and decreased locomotor activity (in all cases, P < 0.0001) compared to an unexposed control group. There appeared to be no modulating effect of the magnetic fields on the response to light, and there was also no effect of the magnetic fields alone (in both cases, P > 0.05) except for a decrease in locomotor activity (P < 0.03). Gene expression of the cryptochromes cry1 and cry2 in the adrenals, liver, and hippocampus was also not affected by exposures (in all cases, P > 0.05). In conclusion, these results suggest that 50 Hz magnetic fields do not significantly affect the acute light response to a degree that can be detected in the adrenal response. Bioelectromagnetics. 2019;9999:XX-XX. (c) 2019 Bioelectromagnetics Society.
Address Public Health England, Chilton, United Kingdom
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Language English Summary Language Original Title
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ISSN 0197-8462 ISBN Medium
Area Expedition Conference
Notes PMID:30945762 Approved no
Call Number GFZ @ kyba @ Serial 2289
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Author Saini, C.; Hutton, P.; Gao, S.; Simpson, R.K.; Giraudeau, M.; Sepp, T.; Webb, E.; McGraw, K.J.
Title Exposure to artificial light at night increases innate immune activity during development in a precocial bird Type Journal Article
Year 2019 Publication Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology Abbreviated Journal Comp Biochem Physiol A Mol Integr Physiol
Volume (up) in press Issue Pages
Keywords Animals
Abstract Humans have greatly altered Earth's night-time photic environment via the production of artificial light at night (ALAN; e.g. street lights, car traffic, billboards, lit buildings). ALAN is a problem of growing importance because it may significantly disrupt the seasonal and daily physiological rhythms and behaviors of animals. There has been considerable interest in the impacts of ALAN on health of humans and other animals, but most of this work has centered on adults and we know comparatively little about effects on young animals. We exposed 3-week-old king quail (Excalfactoria chinensis) to a constant overnight blue-light regime for 6weeks and assessed weekly bactericidal activity of plasma against Escherichia coli – a commonly employed metric of innate immunity in animals. We found that chronic ALAN exposure significantly increased bactericidal activity and that this elevation in immune performance manifested at different developmental time points in males and females. Whether this short-term increase in immune activity can be extended to wild animals, and whether ALAN-mediated increases in immune activity have positive or negative fitness effects are unknown and will provide interesting avenues for future studies.
Address School of Life Sciences, Arizona State University, Tempe, AZ 85287, United States of America. Electronic address: Kevin.McGraw@asu.edu
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Language English Summary Language Original Title
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ISSN 1095-6433 ISBN Medium
Area Expedition Conference
Notes PMID:30974186 Approved no
Call Number GFZ @ kyba @ Serial 2291
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Author Can Duman, A.; Güler, Ö.
Title Techno-economic analysis of off-grid photovoltaic LED road lighting systems: A case study for northern, central and southern regions of Turkey Type Journal Article
Year 2019 Publication Building and Environment Abbreviated Journal Building and Environment
Volume (up) in press Issue Pages
Keywords Economics; Lighting
Abstract Street lighting is one of the sectors where off-grid energy systems are used, and in the past decade interest in these systems has increased due to recent developments occurred both in LED and PV technology. This paper presents a techno-economic analysis of off-grid PV LED road lighting systems for northern, central and southern regions of Turkey. Road lighting calculations are conducted using DIALux software for M4 and M5 road lighting classes to obtain optimal LED luminaires, pole sizes, and spacings. Among the obtained LED powers, load profiles are created using real lighting hours of operation of the selected regions. And then, the required PV-battery systems are optimized using HOMER software. Finally, sensitivity analysis is performed for future projections considering possible increases in electricity prices and decreases in component cost of the PV systems. The results showed that the levelized COE of the off-grid PV LED road lighting systems vary between 0.229 and 0.362 $/kWh. for M4, and 0.254–0.359 $/kWh for M5 road lighting class, depending on the solar potential of the region. And, the total NPC of the entire lighting installation per km vary between 24296 and 29123 $ for M5, and 33225–44318 $ for M4 road lighting class. According to the results, the systems are infeasible under current conditions in Turkey. Nonetheless, they have the added benefits of contributing to the reduction of CO2 emissions. Moreover, future projections show that the systems can be feasible if the declining trend in PV system costs continues and electricity prices increase.
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Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0360-1323 ISBN Medium
Area Expedition Conference
Notes Approved no
Call Number GFZ @ kyba @ Serial 2292
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