论文部分内容阅读
研究了石鲽 (♂ )与牙鲆 (♀ )的人工杂交 ,杂交后代经7个多月的养殖 ,许多生物学特征较牙鲆、石鲽发生了较大变异。在全长相同的情况下 ,杂交鱼的体高比牙鲆体高增加了6%、比石鲽体高增加了4.2% ,其体质量以及成活率也都分别比牙鲆、石鲽的高。其杂种优势明显。
The artificial hybridization of Japanese flounder (Japanese flounder) and Japanese flounder (Japanese flounder) was studied. After more than seven months of breeding, many biological characteristics of hybrids were more variable than those of Japanese flounder and Japanese flounder. Under the same condition, the body height of hybrid fish increased by 6% compared with that of Japanese flounder and 4.2% higher than that of Japanese flounder. The body weight and survival rate of hybrid fish were also higher than those of Japanese flounder and Japanese rock flounder. Its heterosis is obvious.