Lifelong exposure to artificial light at night impacts stridulation and locomotion activity patterns in the cricket Gryllus bimaculatus

Keren Levy, Yoav Wegrzyn, Ronny Efronny, Anat Barnea, Amir Ayali

פרסום מחקרי: פרסום בכתב עתמאמרביקורת עמיתים

תקציר

Living organisms experience a worldwide continuous increase in artificial light at night (ALAN), negatively affecting their behaviour. The field cricket, an established model in physiology and behaviour, can provide insights into the effect of ALAN on insect behaviour. The stridulation and locomotion patterns of adult male crickets reared under different lifelong ALAN intensities were monitored simultaneously for five consecutive days in custom-made anechoic chambers. Daily activity periods and acrophases were compared between the experimental groups. Control crickets exhibited a robust rhythm, stridulating at night and demonstrating locomotor activity during the day. By contrast, ALAN affected both the relative level and timing of the crickets' nocturnal and diurnal activity. ALAN induced free-running patterns, manifested in significant changes in the median and variance of the activity periods, and even arrhythmic behaviour. The magnitude of disruption was light intensity dependent, revealing an increase in the difference between the activity periods calculated for stridulation and locomotion in the same individual. This finding may indicate the existence of two peripheral clocks. Our results demonstrate that ecologically relevant ALAN intensities affect crickets' behavioural patterns, and may lead to decoupling of locomotion and stridulation behaviours at the individual level, and to loss of synchronization at the population level.

שפה מקוריתאנגלית
מספר המאמר20211626
כתב עתProceedings of the Royal Society B: Biological Sciences
כרך288
מספר גיליון1959
מזהי עצם דיגיטלי (DOIs)
סטטוס פרסוםפורסם - 2021
פורסם באופן חיצוניכן

הערה ביבליוגרפית

Publisher Copyright:
© 2021 The Authors.

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