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The background adaptation of the skin color in the loach Paramisgurnus dabryanus

文献类型： 外文期刊

作者： Luo, Wei 1 ; Zhang, Shoudong 1 ; Wang, Tianzhu 2 ; Zhang, Xiaoyang 1 ; Zhang, Yibo 1 ; Chen, Pengyu 1 ; Guo, Zhonggang 3 ; Xiong, Yinlin 4 ; Xu, Zhou 5 ; Jiang, Jun 1 ; Yang, Shiyong 1 ; Yang, Song 1 ; Du, Zongjun 1 ;

作者机构： 1.Sichuan Agr Univ, Coll Anim Sci & Technol, Chengdu 611130, Peoples R China

2.Chinese Acad Trop Agr Sci, Inst Environm & Plant Protect, Haikou 571101, Peoples R China

3.Chongzhou City Agr & Rural Bur, Chengdu 610000, Peoples R China

4.Original Stock Farm Leiocassis Longirostris Sichua, Chengdu 611230, Peoples R China

5.Mianyang Acad Agr Sci, Mianyang 621023, Peoples R China

关键词： Background adaptation; Skin color; Discoloration mechanism; Paramisgurnus dabryanus

期刊名称：APPLIED ANIMAL BEHAVIOUR SCIENCE （ 影响因子：2.3； 五年影响因子：2.5 ）

ISSN： 0168-1591

年卷期： 2023 年 258 卷

页码：

收录情况： SCI

摘要： Body color change is one of the most important manifestations of fish adaptation to the environment. In this study, the body color change of two kinds of loach (Paramisgurnus dabryanus) with different body colors under five different background colors was first studied. It was found that the color of dorsal skin of gray-black loach changed more than that in the abdominal skin, and the L* value of the dorsal skin on the red, yellow and white backgrounds changed significantly (P < 0.05). Compared with the gray-black loach, the body color of golden loach changed less, and the L* value of the back skin and the abdomen skin did not change significantly (P > 0.05). Furthermore, the dynamic change characteristics and adaptive mechanism of body color in different background colors was studied in a black-white background conversion model. The results showed that the greyscale color decreased from 72.33 +/- 2.55-38.22 +/- 2.33, the melanocytes changed from dendritic to mass, and the L* value of the back skin increased significantly (P < 0.05) after transferring the loach from a black background to a white background. The concentration of plasma ATCH decreased significantly (P < 0.05), and that of MCH increased significantly (P < 0.05). When transferring the loach from a white background to a black background, these indicators showed an opposite trend. This study provides a scientific basis for healthy farming of loach and understanding the background color adaptation mechanism of fish.

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