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Millions of Feral Pigs Invade US: Ecosystems and Farms at Risk
16 Aug
Summary
- Over 6 million feral swine infest at least 35 US states.
- Introduced by Spanish explorers in the 1500s as a food source.
- They damage crops, transmit diseases, and threaten native wildlife.
Feral swine, first introduced to the southeastern United States by Spanish explorers in the 1500s, have evolved from a practical food source into a widespread ecological challenge. These animals, now estimated at over 6 million across at least 35 states, are a complex mix of escaped domestic pigs and introduced Eurasian wild boar.
Their expansion, facilitated by natural reproduction and intentional human relocation, poses significant threats. Feral swine damage agricultural land by rooting through crops and pasture, destroying fences and water systems. They also displace native wildlife by competing for food and disturbing habitats.
Beyond environmental damage, these animals carry over 30 viral and bacterial diseases and nearly 40 parasites. These can affect livestock, pets, and humans, posing public health risks. The animals' adaptability and rapid breeding cycles make eradication difficult, continuing their impact on farms and natural ecosystems.
