Dry Conduction Method

...There are two methods for artificial egg collection: the squeezing method (where eggs are extracted by pressing them from the outside) and the incision method. The former is used for rainbow trout, char, and small fish such as sweetfish and smelt, which spawn repeatedly for several years, while the latter is used for salmon and yamame, which die after laying eggs. After artificial egg collection, artificial insemination is required, which can be done by the wet insemination method or the dry insemination method. The former is a method in which semen is added to eggs in water, while the latter is a method in which eggs and sperm are mixed in a dry container and then water is added. ...

*Some of the terminology used in reference to the "dry conduction method" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…人工採卵には搾出法(外部から手で圧して卵を出す)と切開法とがあり，前者は繰り返し何年か産卵するニジマス，イワナや，小型魚のアユ，ワカサギで行われ，後者は卵を産むと死んでしまうサケ，ヤマメなどに用いられる。人工採卵のあとには人工授精が必要であり，これには湿導法と乾導法とがある。前者は水中の卵に精液を加える方法であり，後者は乾いた容器の中で卵と精子を混合し，その後で水を加える方法である。…

※「乾導法」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報