strongyle

Strongyles are a group of parasitic nematodes, commonly known as roundworms, that infect a variety of animals. The term "strongyle" is often used broadly to refer to nematodes belonging to the superfamily Strongyloidea. These parasites have a direct life cycle, meaning they do not require an intermediate host. Infective larvae are typically ingested by the host through contaminated food or water.

Once ingested, the larvae migrate through the host's body, often residing in the gastrointestinal tract, lungs, or blood vessels, depending on the specific species. Adult strongyles then mature and reproduce within the host, laying eggs that are shed in the feces. These eggs hatch into larvae in the environment, where they develop into the infective stage.

Strongyle infections can cause a range of clinical signs in animals, varying from mild gastrointestinal upset to severe anemia, weight loss, and even death. The specific symptoms and severity depend on the species of strongyle, the number of parasites present, and the health of the host animal. Diagnosis is usually made by identifying eggs or larvae in fecal samples. Treatment typically involves antiparasitic medications. Different species of strongyles have adapted to infect various hosts, including horses, cattle, sheep, pigs, and even humans, though human infections are less common and usually caused by specific species. Prevention strategies often focus on good pasture management, regular deworming, and maintaining hygiene.