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The Times of India
The Times of India
World
TOI World Desk

Alaska used rotenone to eliminate invasive pike from an entire lake; the pike vanished, and 6,836 Arctic char were later stocked to rebuild the native fishery

Fish Alaska Arctic

In a remote corner of Southcentral Alaska, state biologists carried out a dramatic restoration: they treated an entire lake with rotenone, a plant-derived piscicide, to wipe out an invasive population of northern pike. After the treatment, post-surveys confirmed the pike were gone. The next step was rebuilding what had been lost. In June 2013, the Alaska Department of Fish and Game (ADF&G) stocked 6,836 hatchery-reared Arctic char fingerlings into the now pike-free lake, jump-starting the recovery of a native fishery that had been pushed out by the predator. This account draws on ADF&G’s technical reports and project summaries documenting the rotenone treatment and restocking. Read on to know more:

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