The term "common cattle grub" refers to a specific type of parasitic insect species known as Hypoderma bovis. It is a member of the Oestridae family, commonly found in North America, particularly in regions with cattle populations.
Common cattle grubs are the larval stage of a botfly, and they inhabit the tissues beneath the skin of cattle. Adult female botflies lay their eggs on the hair coat of cattle, and when the eggs hatch, the larvae penetrate the skin through hair follicles or open wounds, ultimately reaching underlying tissues. The larvae then migrate through the animal's connective tissues, causing irritation, pain, and damage to the host.
Infestation of common cattle grubs can lead to a condition known as "warbles." These are raised, painful swellings on the animal's back, which can range in size from a walnut to a tennis ball. As the larvae continue their development, they eventually create a breathing hole, or "warble," through the skin, allowing them to protrude and complete their metamorphosis into adult botflies.
Common cattle grubs are considered pests as they can negatively impact the health and productivity of cattle. Their presence can result in reduced weight gain, decreased milk production, damage to hides, and secondary bacterial infections. Farmers and ranchers often use various control measures such as insecticides, mechanical removal, or vaccination to manage and prevent infestations.
