Comparative study of hypoxic tolerance between the hybrids of white crucian carp (♀) × red crucian carp (♂) and its parents

Reproduction and breeding Pub Date : 2024-07-09 DOI:10.1016/j.repbre.2024.06.001

Kaikun Luo , Yu Deng , Lingmei Han , Shengwei Wang, Yirui Zhang, Zhonghua Pen, Ting Liu, Chang Wang, Chengxi Liu, Min Tao, Chun Zhang, Rurong Zhao, Jing Wang

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Abstract

The hybrid of female white crucian carp (Carassius auratus cuvieri, WCC) × male red crucian carp (Carassius auratus red var. RCC) (WR), combines desirable characteristics of both parents, including tender meat, rapid growth rate, and strong resistance. To test the hypoxia tolerance of WR, an experiment of exposure to hypoxic conditions was conducted on WR, RCC, and WCC. The results showed that WR and RCC exhibited stronger hypoxia tolerance capacity compared to WCC. The strong resistance to hypoxia of WR and RCC was manifested by the absence of damage to the hepatopancreas after hypoxia, and the fish can adapt to the hypoxic environment by enhancing the hematopoietic function of hematopoietic tissue, remodeling gill morphology, and activating the antioxidant system. By contrast, after hypoxia, the number of red blood cells and the concentration of hemoglobin in the blood of WCC decreased, and the hepatopancreas was seriously damaged, indicating that the WCC is not as tolerant to low oxygen conditions as RCC and WR.

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白鲫（♀）×红鲫（♂）杂交种与亲本耐缺氧性比较研究

雌性白鲫（Carassius auratus cuvieri，WCC）×雄性红鲫（Carassius auratus red var. RCC）的杂交种（WR）兼具亲本的肉质细嫩、生长速度快、抗逆性强等优良特性。为了测试 WR 的耐缺氧性，对 WR、RCC 和 WCC 进行了缺氧条件下的暴露实验。结果表明，与 WCC 相比，WR 和 RCC 表现出更强的耐缺氧能力。WR和RCC的耐缺氧能力强表现在缺氧后肝胰脏无损伤，并能通过增强造血组织的造血功能、重塑鳃的形态和激活抗氧化系统来适应缺氧环境。相比之下，缺氧后 WCC 血液中的红细胞数量和血红蛋白浓度下降，肝胰脏受损严重，表明 WCC 对低氧条件的耐受性不如 RCC 和 WR。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Reproduction and breeding

CiteScore

2.40

自引率

0.00%

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