Freshwater pond and hybrid population formed after the 2011 Great East Japan Earthquake (IMAGE)

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Freshwater pond and hybrid population formed after the 2011 Great East Japan Earthquake

Caption

Left: A freshwater pond formed in Otsuchi, Iwate Prefecture, by the tsunami and land subsidence associated with the 2011 Great East Japan Earthquake (Photo: Seiichi Mori).
Center: A hybrid population of threespine stickleback and Japan Sea stickleback discovered in this pond (Photo: Takuya Hosoki).
Right: Schematic illustration showing how the marine Japan Sea stickleback was carried into the freshwater pond by the tsunami, while the freshwater threespine stickleback was carried from upstream by the backwash. The two species came into contact, resulting in interspecific hybridization (Illustration: Chihiro Kinoshita).

Credit

Chihiro Kinoshita、Takuya Hosoki

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