Light perception and related alternation of physiological performance in spotted knifejaw Oplegnathus punctatus

文献类型： 外文期刊

第一作者： Wang, Jingming

作者： Wang, Jingming;Lv, Junxian;Wang, Feng;Chen, Xiatian;Jia, Yudong;Wang, Jingming;Wang, Feng;Jia, Yudong

作者机构：

关键词： Light color; Behavior; Hematology; Liver and retina; Spotted knifejaw; Oplegnathus punctatus

期刊名称：AQUACULTURE （ 影响因子：3.9； 五年影响因子：4.1 ）

ISSN： 0044-8486

年卷期： 2024 年 592 卷

页码：

收录情况： SCI

摘要： Light is one of the main environmental factors that affects the behavior and physiology of fish. In the present study, the behavioral responses, retinal histology, hematological parameters (white blood cell [WBC], red blood cell [RBC], hemoglobin [Hb] hematocrit [Hct]), hepatic antioxidant enzyme (superoxide dismutase [SOD], catalase [CAT], and glutathione peroxidase [GSH-Px]) activity, aspartate-aminotransferase (AST) and alanineaminotransferase (ALT) activities, malondialdehyde (MDA) content, histological alterations, apoptosis, and stress-related gene expression ( hsp70 , hsp90a , hsp90b ) of spotted knifejaw were investigated under different light colors. The results showed that the residence time of spotted knifejaw plants significantly decreased under red and blue light stimuli but significantly increased under green light. Moreover, a positive and negative phototaxis of the spotted knifejaw under green and red lights was observed. However, retinal structure (relative thickness, cell number, and size) remained unchanged after red and green light treatment for 12 h. WBC and RBC numbers, Hb and Hct contents, hepatic SOD, CAT, GSH-Px, ALT and AST activities, and MDA levels were significantly increased after red and green light treatment for 12 h. Moreover, red and green light treatment caused hepatocyte vacuolization and nuclear migration and significantly increased the percentage of apoptotic cells. Hepatic hsp70 , hsp90a, and hsp90b mRNA levels were significantly upregulated under red and green stimuli. Furthermore, the values of the above parameters under red light treatment were significantly greater than those under green light treatment. The aforementioned parameters nearly recovered to normal levels after the fish returned to normal light for 12 h. In conclusion, in spotted knifejaw, green light promoted attraction and red light avoidance, while red light could induce a more sensitive physiological response than green light. These findings expand the current knowledge on light perception and aid in the management of spotted knifejaw in captivity.

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