Difference in light perception capability and spectral response between juveniles and sub-adults of the whiteleg shrimp Litopenaeus vannamei as determined by electroretinogram

• Published in: Fisheries science Vol. 76; no. 4; pp. 633 - 641
• Main Authors: Matsuda, Keishi, Wilder, Marcy N.
• Format: Journal Article
• Language: English
• Published: Japan Springer Japan 01.07.2010; Springer Nature B.V
• Subjects: Biomedical and Life Sciences; Fire protection; Fish & Wildlife Biology & Management; Fisheries; Fishery sciences; Food Science; Freshwater & Marine Ecology; Life Sciences; Light; Litopenaeus vannamei; Measurement; Minors; Original Article; Retina; Shellfish; Penaeidae; Spectral response; Compound eye; Electroretinogram
• ISSN: 0919-9268; 1444-2906
• DOI: 10.1007/s12562-010-0253-3

In this study, we determined light perception capability in juveniles and sub-adults of L. vannamei by means of electroretinogram (ERG) measurements. Eyes were assumed to be dark-adapted when the response magnitude had stabilized after 70–80 min under dark conditions. ERG responses elicited by mono-wavelength (336–694 nm) stimuli of equal intensity were determined in individual dark-adapted specimens. Relative spectral response curves determined from the amplitudes of on and off relative responses were found to be significantly different in juveniles and sub-adults. Both maximum on relative spectral response magnitudes were observed at 544 nm, but the on relative spectral response magnitudes of sub-adults to 518 nm were higher than for juveniles, and the on relative spectral response magnitudes of sub-adults to 568 nm were lower than for juveniles. The on and off relative spectral response curves of juveniles were steeper than those of sub-adults, while the on relative spectral response magnitude of juveniles was lower than that of sub-adults from 336 to 544 nm. The off relative spectral response magnitude of juveniles was higher than that of sub-adults from 518 to 597 nm.