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The esophageal worm (Spirocerca lupi) is a bright red worm that causes nodules in the esophageal wall. Male worms measure about 40 mm, and female worms are about 70 mm long. Infection occurs perorally via intermediate hosts (various dung beetles) or via paratenic hosts such as chickens, reptiles, and rodents infected by eating the beetles. The ...
Helicoverpa zea larva feeding on corn [33] Helicoverpa zea earns its nickname the corn earworm for its widely known destruction of cornfields. [34] The corn earworm feeds on every part of corn, including the kernels. [34] Severe feeding at the tip of kernels allows entry for diseases and mold growth. [34]
Toxocariasis is an illness of humans caused by the dog roundworm (Toxocara canis) and, less frequently, the cat roundworm (Toxocara cati). [1] These are the most common intestinal roundworms of dogs, coyotes, wolves and foxes and domestic cats, respectively. [2]
Toxocara canis (T. canis, also known as dog roundworm) is a worldwide-distributed helminth parasite that primarily infects dogs and other canids, but can also infect other animals including humans. [ 1 ] [ 2 ] The name is derived from the Greek word toxon 'bow, quiver' and the Latin word caro 'flesh'. [ 3 ]
From Latin dīrus 'fearful; ominous' + fīlum 'thread', Dirofilaria is a genus of nematodes of the superfamily Filarioidea.The first known description of Dirofilaria may have been by Italian nobleman Francesco Birago in 1626 in his Treatise on Hunting: “The dog generates two worms, which are half an arm’s length long and thicker than a finger and red like fire.”
The dog then causes further trauma to the skin by itching and rubbing at the area, leading to a secondary bacterial infection." Acute moist dermatitis: Symptoms.
Pathology is from both the adult worms, eggs and larvae. Cardio-respiratory signs are one clinical symptom. Chronic, coughing, exercise intolerance, dyspnea and tachypnea in young dogs is due to blood vessels being blocked by adults, eggs and larvae. The parasite also causes coagulopathies.
Ancylostoma caninum is a species of nematode known as a hookworm, which principally infects the small intestine of dogs. [1] [2] [3] The result of A. caninum infection ranges from asymptomatic cases to death of the dog; better nourishment, increasing age, prior A. caninum exposure, or vaccination are all linked to improved survival.