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

Reproduction and Breeding, ISSN: 2667-0712, Vol: 4, Issue: 3, Page: 164-173
2024
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Article Description

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.

Bibliographic Details

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

Elsevier BV

Agricultural and Biological Sciences; Biochemistry, Genetics and Molecular Biology

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