Vol. 62, 2023
Effects of Different LED Light
Spectra on Growth and Immunity of the Japanese Eel (Anguilla japonica) and Giant
Mottled Eel (A. marmorata)
Lin1,§, Wei-Chun Hung1,§, Yin-Fu Yeh2,
Kuang-Mao Lu2, Ding-Hwa Cherng2, and Yu-San Han2,*
of Fisheries Science, College of Life Science, National Taiwan
University, Taipei 10617, Taiwan. *Correspondence: E-mail:
firstname.lastname@example.org (Han). Tel: +886-233663726.
E-mail: email@example.com (Lin)' firstname.lastname@example.org (Hung)
Electronics Co., LTD. No.6-8, Zhonghua Rd., Shulin Dist., New Taipei
City 23860, Taiwan. E-mail: email@example.com (Yeh),
§YTL and WCH contributed
equally to this work.
(Received 2 May 2022 / Accepted 28 April 2023 / Published 16 May 2023)
Communicated by Pung-Pung Hwang
recirculating aquaculture systems make light control possible and
enable the usage of specific coloured lights to promote the growth and
immunity of aquaculture species. Five different LED wavelengths (white
light [460 nm], red light [622 nm], green light [517 nm], blue light [467 nm],
and thedark) were used in this study to evaluate growth and immunity in
the glass eel stage of two high-valued anguillid species, Japanese eel (Anguilla japonica) and giant mottled eel (A. marmorata). There were no
significant differences in growth of the Japanese eel among the groups
after 12 weeks of feeding (p
> 0.05); the survival rate of each group was over 95%. The giant
mottled eel showed better growth in total length and body weight in the
red light and dark groups (p
< 0.05). Expression levels of immune-related genes were not
significantly different between each group of the Japanese eel and the
giant mottled eel (p >
0.05). The growth of the Japanese glass eel was not significantly
sensitive to different LED wavelengths, while the giant mottled glass
eel showed better growth under red light and dark environments. Neither
eel species showed significant differences in innate immunity under
different LED wavelengths.
Key words: Anguilla eel, Growth, Immunity,
LED, Light spectrum.
Lin YT, Hung WC, Yeh YF, Lu KM, Cherng DH, Han YS. 2023. Effects of
different LED light spectra on growth and immunity of the Japanese eel (Anguilla japonica) and giant mottled eel (A. marmorata). Zool Stud 62:28. doi:10.6620/ZS.2023.62-28.