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Artificial and natural cross breeding between Atlantic salmon and salmonids currently present in Japan |
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| Authors: | Masatoshi Ban Hiroyuki Nagoya Shunpei Sato Hirohumi Yaegashi Masaki Ichimura Nobuhiro Sato |
| Affiliation: | 1. Hokkaido National Fisheries Research Institute, Fisheries Research Agency, Sapporo, Hokkaido, 062-0922, Japan 2. National Research Institute of Aquaculture, Fisheries Research Agency, Minami-Ise, Mie, 516-0193, Japan 3. Tohoku National Fisheries Research Institute, Fisheries Research Agency, Miyako, Iwate, 027-0052, Japan 4. Shibetsu Salmon Museum, Shibetsu, Hokkaido, 086-1631, Japan 5. Sapporo Salmon Museum, Sapporo, Hokkaido, 005-0017, Japan |
| Abstract: | We evaluated the potential for hybridization between Atlantic salmon and salmonids currently present in Japan. We performed artificial and natural crosses and tested for hybridization using short interspersed elements. We documented the occurrence of hybrids and gynogenesis following artificial crossing. However, the survival rate of these offspring was low (<2 % to the fry stage). We were unable to obtain viable offspring from natural crosses of Atlantic salmon and chum salmon or masu salmon. Our results suggest that there is little risk of hybridization between Atlantic salmon and salmonids that are currently present in the wild in Japan. Furthermore, our results suggest that gynogenesis may occur naturally. |
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