Answer:
Wild pigs are not native to North America and were first introduced in California in 1769 by the Spanish missionaries at Mission San Juan Bautista. The missionaries released domestic pigs near the missions in order to take advantage of the rich natural forage resources available. Released domestic pigs that were not harvested or recaptured became feral. Feral is a term that refers to an animal or group of animals that was once domesticated but has since lost its domestic nature and become wild. In the 1920’s, Russian wild boar were introduced in Monterey County for sport hunting. Russian wild boar and domestic swine belong to the same species, Sus scrofa, and are able to interbreed without restriction. Wild pigs in California today are descendants of both the released domestic pigs and the Russian wild boar.
Wild pigs are susceptible to at least 30 transmittable livestock diseases and are hosts to over 35 types of parasites. Of the 30 diseases that wild pigs carry, 20 can be transferred to humans. Wild pigs are known to cause extensive damage to crops and rangelands. Additionally, they are known carriers of five major waterborne pathogens that can contaminate drinking water: Escherichia coli (E. coli), Campylobacter, Salmonella, Cryptosporidium, and Giardia.
Explanation:
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