Artificial light at night has been considered an emerging threat to global biodiversity.However,the impacts of artificial light on foraging behavior in most wild animals remain largely unclear.Here,we aimed to assess ...Artificial light at night has been considered an emerging threat to global biodiversity.However,the impacts of artificial light on foraging behavior in most wild animals remain largely unclear.Here,we aimed to assess whether artificial light affects foraging behavior in Asian parti-colored bats(Vespertilio sinensis).We manipulated the spectra of light-emitting diode(LED)lighting in a laboratory.Using video and audio recording,we monitored foraging onset,total foraging time,food consumption,freezing behavior(temporary cessation of body movement),and echolocation vocalizations in triads of bats under each lighting condition.Analyses showed that the foraging activities of experimental bats were reduced under LED light.Green,yellow,and red light had greater negative effects on bats’foraging onset,total foraging time,and food consumption than white and blue light.LED light of different spectra induced increased freezing time and echolocation vocalizations in captive bats,except for the white light.The peak wavelength of light emission correlated positively with freezing time,estimated echolocation pulse rate(the number of echolocation pulses per minute),and foraging onset,but negatively with total foraging time and food consumption.These results demonstrate that artificial light disturbs foraging behavior in Asian parti-colored bats.Our findings have implications for understanding the influencing mechanism of light pollution on bat foraging.展开更多
基金supported by the National Natural Science Foundation of China(Grant Nos.32271561 and 32071492)the Natural Science Foundation of Sichuan Province(Grant No.2022NSFSC1761)the Undergraduate Innovation and Entrepreneurship Training Program of China(Grant Nos.S202210638071 and 202310638011).
文摘Artificial light at night has been considered an emerging threat to global biodiversity.However,the impacts of artificial light on foraging behavior in most wild animals remain largely unclear.Here,we aimed to assess whether artificial light affects foraging behavior in Asian parti-colored bats(Vespertilio sinensis).We manipulated the spectra of light-emitting diode(LED)lighting in a laboratory.Using video and audio recording,we monitored foraging onset,total foraging time,food consumption,freezing behavior(temporary cessation of body movement),and echolocation vocalizations in triads of bats under each lighting condition.Analyses showed that the foraging activities of experimental bats were reduced under LED light.Green,yellow,and red light had greater negative effects on bats’foraging onset,total foraging time,and food consumption than white and blue light.LED light of different spectra induced increased freezing time and echolocation vocalizations in captive bats,except for the white light.The peak wavelength of light emission correlated positively with freezing time,estimated echolocation pulse rate(the number of echolocation pulses per minute),and foraging onset,but negatively with total foraging time and food consumption.These results demonstrate that artificial light disturbs foraging behavior in Asian parti-colored bats.Our findings have implications for understanding the influencing mechanism of light pollution on bat foraging.
