Dna detection of cherry hook salmon is endemic to Taiwan.

Taiwan's Xueba Park announced the results of its conservation research program, in which Taiwan salmon, that is, Cherry Hook salmon, has made a major breakthrough in its research. Based on DNA sequence mapping analysis, Cherry Hook Hook Salmon, which is for the first time identified as a native species endemic to Taiwan, is not evolved from the land-sealed cherry salmon introduced by Japan or the escaped salmon from the farm, but a real species endemic to Taiwan.

According to Taiwan's Dongsen News, Taiwan salmon, formerly known as Cherry Hook salmon, also known as Taiwan trout, Lishan trout, and sub-high mountain trout, is the only temperate fish in subtropical Taiwan, and it is also an endemic subspecies found only in Taiwan. Because the name of "cherry blossom hook salmon" follows the general name of the Japanese, the early fishery elder Deng Huotu advocated calling this species endemic to Taiwan as "Taiwan salmon." in recent years, it has finally been officially named Taiwan salmon. However, the appearance of Taiwan salmon is very similar to that of Japanese cherry salmon, only the detailed characteristics are different, and they both belong to the four major subspecies of Pacific salmon. Therefore, there were different views on the origin of Taiwan salmon in academic circles in the past.

In order to determine the identity of Taiwan salmon, Xueba Park commissioned the Institute of Biotechnology of Chinese Medical University to conduct research. Zhou Yizheng, an assistant professor who has studied Taiwan salmon for more than 10 years, analyzed the location of mitochondrial DNA sequences and sequenced more than 10, 000 genes of Taiwan salmon in the study on the molecular evolution of DNA growth hormone genes between Taiwan salmon and Pacific salmon species. For the first time, it has been confirmed as a native species endemic to Taiwan by scientific evidence.

Taiwan salmon, known as "glacial relict organisms", has existed since the Ice Age and was distributed throughout the Tachia River Basin in the early period. At present, it is mainly distributed in the Qijiawan River area of Wuling Farm. As scholars have collected wild Taiwan salmon for routine artificial reproduction every year, they often find that the collected species have reached the smallest mature male, but show infertility such as shrinking testicles, coupled with major natural disasters and so on. The number is about 2000 to 3000, sometimes falling to less than a thousand.

In order to enable Taiwan salmon to reappear and survive in historic streams, the Guan Xueba Park Management Office has implemented a variety of breeding methods in recent years and set up a rehabilitation center. In October this year, 250 12-15 cm salmon were released from Sijielan Creek and Nanhu Creek upstream of Dajiaxi Power Plant, hoping to expand their habitat.