气候变化领域集成服务门户(CCPortal): Selective breeding in the noble scallop (Chlamys nobilis) for low-temperature resistance to reduce overwintering losses

CCPortal

DOI	10.1016/j.aquaculture.2024.740737
	Selective breeding in the noble scallop (Chlamys nobilis) for low-temperature resistance to reduce overwintering losses
	Zhang, Chuanxu; He, Cheng; Sun, Yizhou; Zhang, Hongkuan; Ye, Ting; Liu, Faxin; Ma, Hongyu; Li, Shengkang; Zheng, Huaiping
发表日期	2024
ISSN	0044-8486
EISSN	1873-5622
起始页码	586
卷号	586
英文摘要	The noble scallop, Chlamys nobilis, is a significant species in the aquaculture bivalve in southern China. However, as a warm -water bivalve, framed scallops frequently suffer from regional mass mortality during winters and lead to substantial economic losses. To mitigate this issue, a breeding project was initiated to enhance the lowtemperature resistance of C. nobilis in the winter of 2018. The successive two generations of overwintering selection were conducted in Xiapu (XP, 120.38 degrees E, 27.67 degrees N), Fujian Province, and those cultured in Nan'ao (NA, 117.19 degrees E, 23.32 degrees N), Guangdong Province, were used as controls. Before each generation of scallops was transferred to XP for overwintering, the median lethal temperature (LT50) was estimated through a 24-h acute cold stress experiment indoors. In the present study, selective effects on low -temperature tolerance were evaluated by survival rate, 24-h median lethal temperature (LT5024h), genetic gain, and nutrition components. The survival rates of G1 and G2 generations were significantly improved compared to G0 in NA, with a notable decrease in the LT5024h from 13.13 degrees C in G0 to 12.67 degrees C in G2. The cumulative genetic gain, current genetic gain, and residual genetic gain were improved 3.50%, 1.58%, and 1.98%, respectively. Furthermore, there was a significant increase in the glycogen and crude lipid content in the adductor muscle across generations. The unsaturation of fatty acids and the content of n-3 polyunsaturated fatty acids were also found to increase across generations. Moreover, the content of essential and umami amino acids was significantly higher in the G1 and G2 generations, contributing to the enhanced nutritional quality of the noble scallop. The findings revealed the effectiveness of overwintering selection in enhancing low -temperature tolerance in scallops across generations. This study not only provides valuable insights for selective breeding targeting temperature resistance in mollusks but also facilitates the cultivation of scallops with enhanced low -temperature tolerance and superior nutritional value, thereby fulfilling the escalating demand for high -quality aquatic products.
英文关键词	Chlamys nobilis; Selective breeding; Survival rate; Median lethal temperature; Nutrient components
语种	英语
WOS研究方向	Fisheries ; Marine & Freshwater Biology
WOS类目	Fisheries ; Marine & Freshwater Biology
WOS记录号	WOS:001201739800001
来源期刊	AQUACULTURE
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/305132
作者单位	Shantou University; Shantou University; Shantou University
推荐引用方式 GB/T 7714	Zhang, Chuanxu,He, Cheng,Sun, Yizhou,et al. Selective breeding in the noble scallop (Chlamys nobilis) for low-temperature resistance to reduce overwintering losses[J],2024,586.
APA	Zhang, Chuanxu.,He, Cheng.,Sun, Yizhou.,Zhang, Hongkuan.,Ye, Ting.,...&Zheng, Huaiping.(2024).Selective breeding in the noble scallop (Chlamys nobilis) for low-temperature resistance to reduce overwintering losses.AQUACULTURE,586.
MLA	Zhang, Chuanxu,et al."Selective breeding in the noble scallop (Chlamys nobilis) for low-temperature resistance to reduce overwintering losses".AQUACULTURE 586(2024).