Fishery collapse 'confirms Silent Spring pesticide prophecy'
Fishery collapse ‘confirms Silent Spring pesticide prophecy'
Common pesticides found to starve fish ‘astoundingly fast’ by killing aquatic insects
Damian Carrington Environment editor
https://www.theguardian.com/environment/2019/oct/31/fishery-collapse-confirms-silent-spring-pesticide-prophecy
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The Silent Spring prophecy that pesticides could “still the leaping of fish” has been confirmed, according to scientists investigating the collapse of fisheries in Japan. They say similar impacts are likely to have occurred around the world.
The long-term study showed an immediate plunge in insect and plankton numbers in a large lake after the introduction of neonicotinoid pesticides to rice paddies. This was rapidly followed by the collapse of smelt and eel populations, which had been stable for decades but rely on the tiny creatures for food.
The analysis shows a strong correlation but cannot prove a causal link between the insecticides and the collapse. However, independent scientists said other possibilities had been ruled out and that the work provided “compelling evidence”.
The research is the first to reveal the knock-on effects of insecticides on fish. Harm to bees is well known, but previous studies in Europe have linked neonicotinoids to die-offs in other freshwater species including mayflies, dragonflies and snails and also to falling populations of farmland bird that feed on insects, including starlings and swallows. The insecticide has also been shown to make migrating songbirds lose their way.
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