从“南鱼北养”到“国产良种”，山东水产全链条创新

Core Viewpoint - The article discusses the innovative developments in aquaculture in Shandong, focusing on the successful breeding and cultivation of southern fish species in northern China, particularly through the establishment of a comprehensive supply chain and advanced breeding techniques [1][2][3]. Group 1: Aquaculture Innovations - Shandong has achieved large-scale supply of high-value fish species such as East Star Grouper and Red Spotted Grouper, which have strict requirements for water temperature and quality [2][3]. - The North Breeding Base has implemented an integrated approach to breeding, raising, and promoting southern fish species in northern regions, showcasing a successful model of "southern fish bred and raised in the north" [2][3]. Group 2: Technological Advancements - The aquaculture facilities are equipped with digital systems for real-time monitoring of water quality and fish behavior, significantly enhancing the efficiency of fish farming [3][4]. - The closed-loop water recycling system developed by the company reduces water usage by 90%, energy consumption by 69%, and tailwater discharge by over 90% compared to traditional methods [3][4]. Group 3: Breeding Achievements - The company has successfully bred over 20 marine fish species, including East Star Grouper and Red Spotted Grouper, establishing a genetic foundation for the "southern fish bred in the north" initiative [5][6]. - The breeding process involves advanced techniques such as whole-genome breeding and molecular marker-assisted breeding, ensuring the development of fish with desirable traits [6][8]. Group 4: Crab Cultivation Developments - The Yellow River Delta has become a recognized high-quality production area for crabs, with local initiatives focusing on breeding superior crab varieties to enhance yield and quality [8][9]. - The "Yellow River No. 1" crab variety has been developed through modern breeding techniques, showing improved size, maturity, and stability in quality [8][9].