Nineteen years later Tsukamoto and Miller are still searching the oceans for spawning eels.

十九年后，塜本胜巳和米勒仍在海洋中研究产卵的鳗鱼。

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Discharge water from the system charges a wetland for waterfowl and ultimately returns to an existing stream for spawning salmon and other wildlife habitat restoration.

系统排放的废水，最终返回到栖息地恢复现有溪流产卵的鲑鱼和其他野生动物的再利用。

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These dams blocked access to upstream spawning beds for six species of salmon on what once was one of the most productive salmon rivers in the world.

这些水坝阻断了6种鲑鱼的上游产卵地，而这条河曾是世界上鲑鱼产量最高的河流之一。

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Such flow levels were a reproductive cue for spawning fish and produced sandbars that served as vital nesting grounds for shorebirds, particularly the least tern and piping plover.

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The Purdue team, assisted by the Indiana Department of Natural Resources and the U.S. Geological Survey, collected water samples containing Asian carp eggs in 2011 from sections of the river that were much shallower and narrower than had been considered necessary for spawning, Goforth said.

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