Texas wildlife officials are cautioning the state’s cattle industry to be aware of the re-emergence of the flesh-eating parasite, the New World screwworm fly, which was eradicated in the US in the 1960s. The recent sighting in southern Mexico has prompted authorities in Texas to issue warnings to ranchers to be vigilant against the deadly parasite.
The screwworm fly is a parasite that can spread through flies into open wounds on animals like deer and cattle. The USDA describes how the maggots feed on living tissue, causing extensive damage and potentially leading to death in animals. Adult screwworm flies have distinct characteristics such as orange eyes, a metallic blue or green body, and three dark stripes along their backs.
Ranchers in Texas have been advised by the Parks and Wildlife Division to monitor their animals for any signs of the parasite. Stories of the devastation caused by screwworms in Texas herds are legendary, with reports of the parasite eating flesh and reproducing rapidly, ultimately leading to the death of the animal.
In response to the recent sighting, the USDA temporarily halted cattle imports from Mexico to prevent the spread of the parasite. While some ranchers believe existing safety procedures are sufficient, others are staying vigilant to protect their herds from the tiny terror. Anyone who spots the New World screwworm in Texas is encouraged to report the sighting to the state authorities.
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