| Records |
| Author |
Riley, W.D.; Bendall, B.; Ives, M.J.; Edmonds, N.J.; Maxwell, D.L. |
| Title |
Street lighting disrupts the diel migratory pattern of wild Atlantic salmon, Salmo salar L., smolts leaving their natal stream |
Type |
Journal Article |
| Year |
2012 |
Publication |
Aquaculture |
Abbreviated Journal |
Aquaculture |
Volume  |
330-333 |
Issue |
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Pages |
74-81 |
| Keywords |
Artificial light; Behaviour; Migration; Salmon; Smolt; Street lighting |
| Abstract |
The migratory timing and behaviour of wild Atlantic salmon smolts leaving their natal stream was determined using a passive integrated transponder (PIT) antennae system at a study site on a tributary of the River Itchen, England. Experiments compared the downstream migration of smolts under natural control conditions (2000–2006) with two years (2008 and 2009) when the main downstream exit of the study site was subject to street-lit conditions every alternate night (maximum light intensity measured at the stream surface = 14 lx). Migration of smolts under control conditions was significantly (p < 0.01, n = 170) correlated with sunset. By contrast, street lighting resulted in the timing of migration being random (p = 0.11, n = 7; p = 0.76, n = 34, respectively) with respect to time of day. Furthermore, migration of smolts was significantly (p = 0.01, n = 19) correlated with the time of sunset for fish migrating when the lamp had been off, but random (p = 0.36, n = 22) when the lamp had been on (2008 and 2009 data, combined). This alteration in migratory behaviour due to street lighting may impact fitness. |
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| ISSN |
0044-8486 |
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IDA @ john @ |
Serial |
69 |
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| Author |
Durrant, J.; Botha, L.M.; Green, M.P.; Jones, T.M. |
| Title |
Artificial light at night prolongs juvenile development time in the black field cricket, Teleogryllus commodus |
Type |
Journal Article |
| Year |
2018 |
Publication |
Journal of Experimental Zoology. Part B, Molecular and Developmental Evolution |
Abbreviated Journal |
J Exp Zool B Mol Dev Evol |
| Volume |
330 |
Issue |
4 |
Pages |
225-233 |
| Keywords |
Animals |
| Abstract |
A growing body of evidence exists to support a detrimental effect of the presence of artificial light at night (ALAN) on life-history and fitness traits. However, few studies simultaneously investigate multiple traits and the life stages at which changes manifest. We experimentally manipulated ALAN intensities, within those found in the natural environment, to explore the consequences for growth, survival, and reproductive success of the field cricket, Teleogryllus commodus. We reared crickets from egg to adult under a daily light-cycle consisting of 12 hr bright daylight (2,600 lx) followed by either 12 hr darkness (0 lx) or dim-light environments (1, 10, or 100 lx). We found egg hatch, adult survival, and reproductive measures were largely comparable for all treatments. However, juvenile development time (number of days from egg to adult) was on average 10 days (14%) longer and adults were also larger when crickets were exposed to any light at night (1, 10, or 100 lx). Our data demonstrate that chronic lifetime exposure to ALAN can modulate the timing of life-history events and may disrupt phenology to a similar extent as other abiotic factors. |
| Address |
The School of BioSciences, Faculty of Science, University of Melbourne, Victoria, Australia |
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English |
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Edition |
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| ISSN |
1552-5007 |
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| Notes |
PMID:29862646 |
Approved |
no |
| Call Number |
GFZ @ kyba @ |
Serial |
1925 |
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Mercier, A.; Ycaza, R.; Hamel, J. |
| Title |
Long-term study of gamete release in a broadcast-spawning holothurian: predictable lunar and diel periodicities |
Type |
Journal Article |
| Year |
2007 |
Publication |
Marine Ecology Progress Series |
Abbreviated Journal |
Mar. Ecol. Prog. Ser. |
| Volume |
329 |
Issue |
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Pages |
179-189 |
| Keywords |
Spawning; Periodicity; Lunar cycle; Reproductive synchrony; Holothurians; Echinoderms; Isostichopus fuscus |
| Abstract |
Annual and monthly patterns of gamete release by the sea cucumber Isostichopus fuscus on the coast of Ecuador were studied to determine the proximal spawning cue and variations in reproductive output throughout the year. Several hundred newly collected individuals were monitored nearly every month for 4 yr. I. fuscus displayed a lunar spawning periodicity: 0.7 to 34.9% of individuals consistently spawned 1 to 4 d after the new moon. Spawning mostly occurred within one evening; however, some gamete release was often recorded over 2 to 4 consecutive evenings. Individuals maintained in captivity for several months retained their spawning periodicity and timing with the lunar cycle. Conversely, newly caught individuals that were shaded from the moonlight did not spawn, thus demonstrating the apparent lack of endogenous rhythms and prevalence of lunar luminance over other cues (i.e. tidal cycle, fluctuations in barometric pressure). On a spawning night, males typically initiated gamete release around sunset; females spawned just after the peak male broadcast. The percentage of spawning individuals was higher and a greater overlap between male and female peak spawning activity was observed during clear conditions compared with overcast conditions. The gonads of individuals that did not spawn in a given month showed a variety of maturity levels, including post-spawning, growth and mature gametogenic stages. Hence, the individual reproductive cycle is apparently longer than the monthly spawning periodicity observed at the population level, enabling I. fuscus populations to be reproductive year round. |
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| ISSN |
0171-8630 |
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Approved |
no |
| Call Number |
IDA @ john @ |
Serial |
104 |
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| Author |
Rodríguez Martín, A.; Holmberg, R.; Dann, P.; Chiaradia, A. |
| Title |
Penguin colony attendance under artificial lights for ecotourism |
Type |
Journal Article |
| Year |
2018 |
Publication |
Journal of Experimental Zoology. Part A, Ecological and Integrative Physiology |
Abbreviated Journal |
J Exp Zool A Ecol Integr Physiol |
| Volume |
329 |
Issue |
8-9 |
Pages |
457-464 |
| Keywords |
Animals |
| Abstract |
Wildlife watching is an emerging ecotourism activity around the world. In Australia and New Zealand, night viewing of little penguins attracts hundreds of thousands of visitors per year. As penguins start coming ashore after sunset, artificial lighting is essential to allow visitors to view them in the dark. This alteration of the nightscape warrants investigation for any potential effects of artificial lighting on penguin behavior. We experimentally tested how penguins respond to different light wavelengths (colors) and intensities to examine effects on the colony attendance behavior at two sites on Phillip Island, Australia. At one site, nocturnal artificial illumination has been used for penguin viewing for decades, whereas at the other site, the only light is from the natural night sky. Light intensity did not affect colony attendance behaviors of penguins at the artificially lit site, probably due to penguin habituation to lights. At the not previously lit site, penguins preferred lit paths over dark paths to reach their nests. Thus, artificial light might enhance penguin vision at night and consequently it might reduce predation risk and energetic costs of locomotion through obstacle and path detection. Although penguins are faithful to their path, they can be drawn to artificial lights at small spatial scale, so light pollution could attract penguins to undesirable lit areas. When artificial lighting is required, we recommend keeping lighting as dim and time-restricted as possible to mitigate any negative effects on the behavior of penguins and their natural habitat. |
| Address |
Research Department, Phillip Island Nature Parks, Cowes, Victoria, Australia |
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English |
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Series Issue |
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Edition |
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| ISSN |
2471-5638 |
ISBN |
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| Notes |
PMID:29603671 |
Approved |
no |
| Call Number |
GFZ @ kyba @ |
Serial |
1834 |
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| Author |
Sanders, D.; Gaston, K.J. |
| Title |
How ecological communities respond to artificial light at night |
Type |
Journal Article |
| Year |
2018 |
Publication |
Journal of Experimental Zoology. Part A, Ecological and Integrative Physiology |
Abbreviated Journal |
J Exp Zool A Ecol Integr Physiol |
| Volume |
329 |
Issue |
8-9 |
Pages |
394-400 |
| Keywords |
Ecology |
| Abstract |
Many ecosystems worldwide are exposed to artificial light at night (ALAN), from streetlights and other sources, and a wide range of organisms has been shown to respond to this anthropogenic pressure. This raises concerns about the consequences for major ecosystem functions and their stability. However, there is limited understanding of how whole ecological communities respond to ALAN, and this cannot be gained simply by making predictions from observed single species physiological, behavioral, or ecological responses. Research needs to include an important building block of ecological communities, namely the interactions between species that drive ecological and evolutionary processes in ecosystems. Here, we summarize current knowledge about community responses to ALAN and illustrate different pathways and their impact on ecosystem functioning and stability. We discuss that documentation of the impact of ALAN on species interaction networks and trait distributions provides useful tools to link changes in community structure to ecosystem functions. Finally, we suggest several approaches to advance research that will link the diverse impact of ALAN to changes in ecosystems. |
| Address |
Wissenschaftskolleg zu Berlin, Institute for Advanced Study, Berlin, Germany |
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English |
Summary Language |
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2471-5638 |
ISBN |
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| Notes |
PMID:29656458 |
Approved |
no |
| Call Number |
GFZ @ kyba @ |
Serial |
1857 |
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