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Questions and Answers
What is the common anatomical structure found in the buccal capsule of Strongylus vulgaris?
What is the common anatomical structure found in the buccal capsule of Strongylus vulgaris?
Which species of the Strongylidae family migrates to the liver as part of its life cycle?
Which species of the Strongylidae family migrates to the liver as part of its life cycle?
Which life cycle characteristic is associated with Oesophagostomum?
Which life cycle characteristic is associated with Oesophagostomum?
What symptom is commonly associated with infection by Trichonematidae?
What symptom is commonly associated with infection by Trichonematidae?
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What is the prepatent period for Strongylus vulgaris?
What is the prepatent period for Strongylus vulgaris?
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What distinguishes Oesophagostomum from Chabertia ovina?
What distinguishes Oesophagostomum from Chabertia ovina?
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Which species is characterized by a large buccal capsule with three tooth-like folds?
Which species is characterized by a large buccal capsule with three tooth-like folds?
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Which of the following hosts is associated with Strongylus equinus?
Which of the following hosts is associated with Strongylus equinus?
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Which parasite is commonly associated with respiratory distress in galliform birds?
Which parasite is commonly associated with respiratory distress in galliform birds?
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What is the primary habitat for Amidostomum anseris in its host?
What is the primary habitat for Amidostomum anseris in its host?
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How does Ancylostoma caninum primarily infect its host?
How does Ancylostoma caninum primarily infect its host?
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What is a common clinical sign of infection with Oesophagostomum species in pigs?
What is a common clinical sign of infection with Oesophagostomum species in pigs?
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What is the prepatent period for Syngamus trachea?
What is the prepatent period for Syngamus trachea?
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Which characteristic describes the buccal capsule of Ancylostoma species?
Which characteristic describes the buccal capsule of Ancylostoma species?
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What is one of the key symptoms of infection with the gizzard worm, Amidostomum anseris?
What is one of the key symptoms of infection with the gizzard worm, Amidostomum anseris?
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What type of eggs does Syngamus trachea produce, and where does development occur?
What type of eggs does Syngamus trachea produce, and where does development occur?
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What is the primary symptom caused by the bursate helminths that leads to anemia?
What is the primary symptom caused by the bursate helminths that leads to anemia?
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Which species of Cooperia is predominantly associated with cattle?
Which species of Cooperia is predominantly associated with cattle?
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What is the correct prepatent period for Dictyocaulus viviparus in cattle?
What is the correct prepatent period for Dictyocaulus viviparus in cattle?
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What developmental stage does the L3 larvae of Nematodirus undergo before entering the intestinal mucosa?
What developmental stage does the L3 larvae of Nematodirus undergo before entering the intestinal mucosa?
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Which symptom is not typically associated with Cooperia infections in calves?
Which symptom is not typically associated with Cooperia infections in calves?
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Which type of diagnostic test is not used for detecting the presence of bursate helminths?
Which type of diagnostic test is not used for detecting the presence of bursate helminths?
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The female of which genus has a pointed tail and a small vulval flap?
The female of which genus has a pointed tail and a small vulval flap?
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What is the primary anatomical site of infection for Nematodirus in sheep and goats?
What is the primary anatomical site of infection for Nematodirus in sheep and goats?
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What is the prepatent period for Uncinaria trigonocephalum in dogs, cats, and foxes?
What is the prepatent period for Uncinaria trigonocephalum in dogs, cats, and foxes?
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What symptoms are associated with Trichostrongylus infections in ruminants?
What symptoms are associated with Trichostrongylus infections in ruminants?
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How does Ostertagia ostertagi develop and migrate to the abomasum?
How does Ostertagia ostertagi develop and migrate to the abomasum?
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What is the distinguishing feature of Haemonchus species in ruminants?
What is the distinguishing feature of Haemonchus species in ruminants?
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Which of the following symptoms is primarily associated with Ostertagia infections?
Which of the following symptoms is primarily associated with Ostertagia infections?
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What is the main method of transmission for Trichostrongylus species?
What is the main method of transmission for Trichostrongylus species?
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What is the size range for Uncinaria trigonocephalum?
What is the size range for Uncinaria trigonocephalum?
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What is a common feature of Trichostrongylus species found in ruminants?
What is a common feature of Trichostrongylus species found in ruminants?
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Study Notes
Strongyles
- Family: Strongylidae
- Genus: Strongylus, Triodontophorus, Chabertia, Oesophagodontus, Trichonema, Oesophagostomum, Syngamus, Amidostomum
- Species: Several species exist within each genus, each with specific characteristics
- Hosts: Primarily equines (horses, donkeys), ruminants (sheep, goats), and pigs
- Location: Different species target different parts of the GI tract, like cecum, colon, trachea, bronchi, and gizzard
- Morphology: Range in size from 1.5 to 5 cm; some have leaf-like crowns and teeth, others are cylindrical or hook-shaped, with a buccal capsule. Variation in tooth and papillae structure is characteristic for each species
- Life Cycle: Non-migratory or migratory; involves development of larvae (L3) in tissues, returning to intestine or moving to lungs, various migration patterns. Specific prepatent periods (time until eggs appear in feces) exist
- Pathogenesis: Varies by species, but can cause significant damage to the GI tract (ulcers, nodules, anemia).
- Diagnosis: Typically involves fecal examination.
Other Nematodes
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Family: Trichostrongylidae
- Genus: Trichostrongylus, Ostertagia, Hyostrongylus, Haemonchus, Cooperia, Nematodirus, Dictyocaulus, Metastrongylus
- Hosts: Predominantly ruminants, and pigs
- Habitat: Abomasum, small intestine (often migrating to rumen or lungs).
- Morphology: Smaller, hair-like worms with varying sizes and structures; some with prominent buccal capsules or cuticular ridges; key morphological differences between species
- Life Cycle: Direct or indirect, including stages of development in lungs. Variation in prepatent periods exist. Ingestion of L3 larvae or eggs containing various stages of larval development.
- Pathogenicity: Cause gastritis, enteritis and other respiratory conditions. Symptoms include weight loss, diarrhea, and decreased milk yield. Damage varies depending on the infection intensity
- Diagnosis: Fecal examination, larval culture often used to aid in diagnosis
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Description
Explore the fascinating world of strongyles, a family of parasitic worms affecting various hosts such as horses, sheep, and pigs. This quiz delves into their morphology, life cycle, and the pathogenesis associated with different species. Test your knowledge on their characteristics and impacts on host organisms.
