Artificial light at night alters diurnal and nocturnal behavior and physiology in green anole lizards.

Autor: Taylor LA; Department of Biology, Trinity University, San Antonio, Texas, 78212 United States of America; Department of Biological Sciences, University of North Texas, Denton, Texas 76203 United States of America., Thawley CJ; Department of Biological Sciences, University of Rhode Island, Kingston, Rhode Island, 02881 United States of America., Pertuit OR; Department of Biology, Trinity University, San Antonio, Texas, 78212 United States of America., Dennis AJ; Department of Biology, Trinity University, San Antonio, Texas, 78212 United States of America; Department of Biological Sciences, North Dakota State University, Fargo, North Dakota United States of America., Carson IR; Department of Biology, Trinity University, San Antonio, Texas, 78212 United States of America., Tang C; Department of Biology, Trinity University, San Antonio, Texas, 78212 United States of America; Environmental Science Programme, Beijing Normal University - Hong Kong Baptist University United International College, Zhuhai, China; Johns Hopkins University, Baltimore, Maryland, 21218 United States of America., Johnson MA; Department of Biology, Trinity University, San Antonio, Texas, 78212 United States of America. Electronic address: mjohnso9@trinity.edu.
Jazyk: angličtina
Zdroj: Physiology & behavior [Physiol Behav] 2022 Dec 01; Vol. 257, pp. 113992. Date of Electronic Publication: 2022 Oct 09.
DOI: 10.1016/j.physbeh.2022.113992
Abstrakt: Artificial light at night (ALAN) disrupts biological rhythms across widely diverse organisms. To determine how energy is allocated by animals in different light environments, we investigated the impacts of ALAN on behavior and physiology of diurnal green anole lizards (Anolis carolinensis). Two groups of 24 adult lizards (half males, half females) were maintained in a controlled lab setting for six weeks. One group was exposed to a simulated natural summer light-dark cycle; the other was exposed to ALAN that simulated urban, nocturnal light exposure. After an acclimation period, we conducted four behavioral trials. One trial examined behavioral time allocation over two 24 h periods, and three others were conducted during mid-day and mid-night: open field tests, to examine exploratory behavior; foraging trials, to examine prey consumption; and social interaction trials, to examine same-sex interactions. We then measured each lizard's snout-vent length and mass of its body, abdominal fat pads, liver, and, for males, testes. Lizards exposed to ALAN were more likely to be awake at night, using nocturnal light to explore, forage, and display to conspecifics. However, during the day, ALAN lizards were less likely to be awake, slower to move, and females displayed less frequently. ALAN lizards had heavier fat pads and testes, but ALAN did not impact body mass, liver mass, or snout-vent length. In sum, ALAN appears to cause a broad shift towards increased nocturnal activity and may alter metabolic and reproductive processes. Future work should examine the fitness consequences of these behavioral and physiological changes.
Competing Interests: Declarations of Competing Interest The authors have no relevant financial or non-financial interests to disclose.
(Copyright © 2022. Published by Elsevier Inc.)
Databáze: MEDLINE
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