The laboratory diagnosis of parasitism
While this technique will detect the eggs and larvae of most nematodes, cestodes and coccidia, it will not demonstrate trematode eggs, which have a higher specific density. For these, a…
Parasites of ungulates
Superfamily: Trichostrongyloidea Hosts: Fallow deer (Dama dama), roe deer (Capreolus capreolus) Spiculopteragia spiculoptera Synonym: Ostertagia spiculoptera, Spiculopteragia bohmi Predilection site: Abomasum Parasite class: Nematoda Superfamily: Trichostrongyloidea Hosts: Red deer (Cervus…
Parasite taxonomy and morphology
Trichostrongylus, Ostertagia, Dictyocaulus, Haemonchus etc. Buccal capsule small. Life cycle direct; infection by L3 Strongyloidea Strongylus, Syngamus etc. Buccal capsule well developed; leaf crowns and teeth usually present….
Facultative ectoparasites and arthropod vectors
Sub-order: Ixodida (Metastigmata) Family: Argasidae Description: The unfed adult is reddish brown turning slate blue when fed. The female is about 8 mm in length and the male about 5…
Parasites of horses
Clinical signs: The presence of adult worms in the stomach causes very little clinical disturbance. Cutaneous habronematidosis presents as intense itching of the affected skin. Non-healing granulomatous lesions, raised above…
Parasites of laboratory animals
Life cycle: There are five merogony stages. The first-generation meronts are in the glands of the lower small intestine, the second-to fifth-generation meronts are in the caecum and colon. The…
Parasites of poultry and gamebirds
Clinical signs: Light infections of less than 100 worms may cause poor weight gains and lowered egg production. Heavy infections often induce inappetence and emaciation. Diagnosis: Because of the non-specific…
Parasites of dogs and cats
Tetratrichomonas felistomae Predilection site: Mouth Parasite class: Zoomastigophorasida Family: Trichomonadidae Description: The body is piriform, 6–11 × 3–4 μm, (mean 8 × 3 μm). There are four anterior flagella, which…
Parasites of cattle
Pathology: The immature flukes are embedded in the mucosa of the upper ileum and duodenum and are plug feeders, and this can result in severe erosion of the duodenal mucosa….
Parasites of pigs
Pathology: During the course of larval development there is dilation of infected gastric glands and hyperplasia of the glandular epithelium of both infected and neighbouring glands. The lamina propria is…
