Dim artificial light at night affects mating, reproductive output, and reactive oxygen species inDrosophila melanogaster
| Autor: | Therésa M. Jones, Lucy Katherine McLay, Venkatesh Nagarajan-Radha, Mark P. Green |
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| Rok vydání: | 2018 |
| Předmět: |
Male
0106 biological sciences 0301 basic medicine Light Physiology Oviposition media_common.quotation_subject Zoology Biology 010603 evolutionary biology 01 natural sciences Predation Courtship Melatonin Sexual Behavior Animal 03 medical and health sciences Genetics medicine Animals Circadian rhythm Mating Molecular Biology Lighting Ecology Evolution Behavior and Systematics media_common Reproductive success Reproduction Ovary biology.organism_classification Fecundity Drosophila melanogaster 030104 developmental biology Female Animal Science and Zoology Reactive Oxygen Species medicine.drug |
| Zdroj: | Journal of Experimental Zoology Part A: Ecological and Integrative Physiology. 329:419-428 |
| ISSN: | 2471-5638 |
| DOI: | 10.1002/jez.2164 |
| Popis: | Humans are lighting the night-time environment with ever increasing extent and intensity, resulting in a variety of negative ecological effects in individuals and populations. Effects of light at night on reproductive fitness traits are demonstrated across taxa however, the mechanisms underlying these effects are largely untested. One possible mechanism is that light at night may result in perturbed reactive oxygen species (ROS) and oxidative stress levels. Here, we reared Drosophila melanogaster under either dim (10 lx) light or no light (0 lx) at night for three generations and then compared mating and lifetime oviposition patterns. In a second experiment, we explored whether exposure to light at night treatments resulted in variation in ROS levels in the heads and ovaries of six, 23- and 36-day-old females. We demonstrate that dim light at night affects mating and reproductive output: 10 lx flies courted for longer prior to mating, and female oviposition patterns differed to 0 lx females. ROS levels were lower in the ovaries but not heads, of 10 lx compared with 0 lx females. We suggest that reduced ROS levels may reflect changes in ovarian physiology and cell signaling, which may be related to the differences observed in oviposition patterns. Taken together, our results indicate negative consequences for invertebrates under more stressful, urban, lit conditions and further investigation into the mechanisms driving these changes is warranted to manage invertebrate communities in a brighter future. |
| Databáze: | OpenAIRE |
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