Strongyles Biology and Life Cycle

Parasitic nematode infecting cattle and buffalo, known for causing nodular lesions in the small intestine.

Parasitic nematode affecting pigs, known for causing nodular lesions in the large intestine.

Parasitic nematode (gapeworm) affecting birds, particularly fowl and turkeys, causing respiratory distress due to its presence in the trachea.

Parasitic nematode affecting ducks and geese, known to inhabit the gizzard of its host.

Parasitic nematode affecting dogs, foxes, and cats, causing hemorrhagic anemia due to its presence in the small intestine.

Parasitic nematode affecting humans, causing hemorrhagic anemia due to its presence in the small intestine.

Parasitic nematode affecting sheep and goats, known to inhabit the small intestine.

A type of hookworm affecting humans, characterized by a bent anterior end.

A type of intestinal nematode that lives in the cecum and colon of horses. It is characterized by a large buccal capsule with leaf crowns and two ear-shaped teeth. The eggs "hatch" in the environment and the larvae (L3) migrate to the cranial mesenteric artery. After developing to L5, they return to the intestines to complete their lifecycle.

A type of intestinal nematode that also infects horses. It's similar to S. vulgaris but has no teeth and migrates to the liver instead of the cranial mesenteric artery.

Another strongyle that infects horses. It has a larger buccal capsule with three conical teeth and forms nodules in the intestinal wall. It's known for its longer prepatent period.

This group of strongyles is classified by their 3-pair of teeth arrangement in their subglobular buccal capsule.

A species of strongyle that infects sheep and goats, primarily residing in the cecum. The notable feature is the three tooth-like folds at the base of its buccal capsule.

A strongyle found in sheep and goats, characterized by a bell-shaped buccal capsule with two rows of papillae but no teeth. It migrates through the intestinal wall, specifically the small intestine, cecum, and colon.

This is a superfamily of roundworms that are commonly known as "strongyles". They are typically found in the intestines of various animals, including horses, sheep, and goats. They are characterized by their large buccal capsules, which are used to attach to the intestinal wall, and their ability to migrate through the host's tissues and organs.

These are a group of strongyles that infect various animals, including sheep and goats, and are commonly known as "nodular worms". One prominent species is "Oesophagostomum columbianum". They are characterized by a cylindrical buccal capsule and lack of teeth. These strongyles typically invade the intestinal mucosa during their larval stages

A small, buccal capsule with a dorsal lancet. The male bursa has a Y-shaped dorsal ray and barbed spicules. The female tail is sharply pointed, with a prominent vulval flap.

A type of nematode that primarily infects the small intestine of cattle. It is characterized by its small cephalic vesicle and transverse cuticular striations. The male's bursa is large with a dorsal ray divided into two branches. The female tail is long and tapering, with a small vulval flap.

These are slender, twisted nematodes that resemble cotton wool when in groups. The male has long, slender spicules with fused tips, and the female boasts a short, truncated tail.

A type of nematode that infects the trachea and bronchi of ruminants, causing parasitic bronchitis. It has a thread-like appearance (8-10 cm long) and has a distinct cephalic button.

A type of nematode that infects the lungs of pigs. You can differentiate it from the other nematodes by its hooked spicules.

The process where the nematode larvae develops entirely within the egg, hatching as an infective L3 stage.

The period of time between the ingestion of infective larval stages and the appearance of eggs in the feces.

The process by which an organism produces eggs containing fully developed larvae.

A type of intestinal roundworm that is found in dogs, cats, and foxes. It is typically 1-3 cm long with a hook-shaped anterior end and a buccal capsule with cutting plates. Infection occurs by skin penetration or ingestion of the L3 stage, followed by migration to the lungs and then the intestine. The prepatent period is approximately 5 weeks, and symptoms include diarrhea and skin dermatitis.

A type of intestinal roundworm that infects ruminants, specifically cattle, and causes gastritis. It is slender, reddish-brown, and up to 1 cm long. The infection occurs through ingestion of L3 larvae, which develop and mature in the abomasal glands. The prepatent period is approximately 3 weeks, and symptoms include weight loss, diarrhea, and decreased milk yield.

A type of intestinal roundworm that infects pigs and is found in the stomach. It is slender, reddish, and measures 5-8 mm long. It has a small cephalic vesicle and its spicules resemble those of Ostertagia but with only two distal branches.

A genus of intestinal roundworms that are commonly known as "barber's pole worms." They are large, bright-red, blood-sucking worms that infect ruminants, including sheep, cattle, and camels. They reside in the abomasum.

A genus of intestinal roundworms that includes species like T. axei, T. colubriformis, T. vitrinus, T. capricola, T. retortaeformis, and T. tenuis. These worms are small and hair-like, typically less than 7 mm long. They lack a prominent buccal capsule and have a distinct excretory notch in the esophageal region. Infection occurs through the ingestion of ensheathed L3 larvae, which develop and mature in the intestinal villi.

A type of intestinal roundworm that infects ruminants, including sheep and goats. It is slender and reddish-brown, and has a no buccal capsule. The cuticle has 25-35 longitudinal ridges. The infection occurs through ingestion of L3 larvae, which develop and mature in the abomasal glands. The prepatent period is approximately 3 weeks, and symptoms include weight loss, diarrhea, and decreased milk yield.

A type of intestinal roundworm that infects primarily pigs, rabbits and ruminants. These worms are known for various sizes and characteristics, but all within the Trichostrongyloidea family.