Veterinary Parasitology
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Questions and Answers

What is the main goal of studying veterinary parasitology?

  • To promote food safety
  • To become fluent in the language of veterinary parasitology (correct)
  • To prevent and control zoonotic diseases
  • To understand the human-animal bond

    • What is the term for a parasite that has a different host for different stages of its life cycle?

  • Facultative parasite
  • Euryxenous parasite (correct)
  • Monoxenous parasite
  • Homoxenous parasite

    • What is the term for a parasite that lives on the outside of its host?

  • Aberrant parasite
  • Endoparasite
  • Incidental parasite
  • Ectoparasite (correct)

    • What is the term for the relationship between two organisms in which one benefits and the other is harmed?

    <p>Parasitism</p> Signup and view all the answers

    What is the outermost layer of a nematode's body?

    <p>Cuticle</p> Signup and view all the answers

    What is the function of the somatic muscular layer in a nematode?

    <p>To enable movement</p> Signup and view all the answers

    What is the term for the process of using the Linnaean classification scheme to identify organisms?

    <p>Classification scheme</p> Signup and view all the answers

    What is the purpose of the cervical alae?

    <p>To modify the external cuticle</p> Signup and view all the answers

    What is the term for a chemical used to kill fungi?

    <p>Fungicides</p> Signup and view all the answers

    What is the name of the structures associated with the copulatory bursa?

    <p>Spicules</p> Signup and view all the answers

    What is the term for the process of infesting a host with parasites?

    <p>Infestation</p> Signup and view all the answers

    What is the term for the relationship between two organisms in which one benefits and the other is not affected?

    <p>Commensalism</p> Signup and view all the answers

    What is the layer beneath the cuticle responsible for?

    <p>Secreting the cuticle</p> Signup and view all the answers

    What is the shape of some species of nematodes?

    <p>Spherical</p> Signup and view all the answers

    What is the name of the structures that project from the copulatory bursa?

    <p>Bursal rays</p> Signup and view all the answers

    What is the function of the hypodermis?

    <p>To secrete the cuticle</p> Signup and view all the answers

    What is the kingdom that contains platyhelminths, nematodes, acanthocephalans, and arthropods?

    <p>Kingdom: Animalia</p> Signup and view all the answers

    Which phylum does the dog belong to?

    <p>Phylum: Chordata</p> Signup and view all the answers

    What is the purpose of the tables provided in the book?

    <p>To view parasites by their hosts</p> Signup and view all the answers

    What is the name of the classification scheme used to organize living organisms?

    <p>Linnaean classification scheme</p> Signup and view all the answers

    What is the primary concern of veterinary parasitology?

    <p>True parasites of domesticated animals</p> Signup and view all the answers

    How many species of warm-blooded vertebrates can Toxoplasma gondii infect?

    <p>Over 300 species</p> Signup and view all the answers

    What is the only host where the sexual stages of Toxoplasma gondii occur?

    <p>Felines</p> Signup and view all the answers

    Which kingdom contains protozoans?

    <p>Kingdom: Protista</p> Signup and view all the answers

    Which of the following kingdoms includes fungi?

    <p>Fungi</p> Signup and view all the answers

    What is the term for the study of parasites?

    <p>Parasitology</p> Signup and view all the answers

    What is the class of the species 'Canis familiaris'?

    <p>Mammalia</p> Signup and view all the answers

    Which of the following is a characteristic of a parasite?

    <p>Lives in a host in which it does not normally live</p> Signup and view all the answers

    What is the term for a parasite that wanders into an organ in which it does not normally live?

    <p>Phoresis</p> Signup and view all the answers

    What is the purpose of learning the scientific names, common names, hosts, and key identifying features of parasites?

    <p>To build a greater proficiency in veterinary parasitology</p> Signup and view all the answers

    What is the significance of the classification scheme in veterinary parasitology?

    <p>It is a framework for building a greater proficiency in veterinary parasitology</p> Signup and view all the answers

    What is the role of veterinary technicians in veterinary parasitology?

    <p>To continually improve professional knowledge and competence</p> Signup and view all the answers

    What is the characteristic of the egg type of Ancylostoma caninum, the hookworm of dogs?

    <p>Contains a morula stage within the eggshell</p> Signup and view all the answers

    What is the name of the nematode egg type produced by Toxocara canis?

    <p>Ascaroid type</p> Signup and view all the answers

    Which type of nematode larva is characterized by a kinked-tail shape?

    <p>Lungworm</p> Signup and view all the answers

    What is the reproductive strategy of an adult female nematode?

    <p>Oviparous</p> Signup and view all the answers

    What is the characteristic of whipworm eggs?

    <p>Produced every third day</p> Signup and view all the answers

    What is the name of the nematode egg type produced by Haemonchus contortus?

    <p>Trichostrongyle type</p> Signup and view all the answers

    Which type of nematode larva is also known as the prelarval stage?

    <p>Microfilariae</p> Signup and view all the answers

    Why is it important to consider the size and composition of nematode eggs and larvae?

    <p>To render a diagnosis</p> Signup and view all the answers

    Study Notes

    The Language of Veterinary Parasitology

    • Veterinary parasitology is concerned with two kingdoms: Animalia and Protista.
    • The kingdom Animalia contains platyhelminths (flatworms), nematodes (roundworms), acanthocephalans (thorny-headed worms), annelids (leeches), and arthropods (insects, mites, ticks, spiders, and other creatures with jointed appendages).
    • The kingdom Protista contains protozoans (unicellular organisms).

    Classification Scheme

    • The Linnaean classification scheme is used to classify organisms.
    • The scheme includes the following taxonomic ranks: Kingdom, Phylum, Subphylum, Class, Order, Family, Genus, and Species.
    • The classification scheme for the dog is: Kingdom: Animalia, Phylum: Chordata, Subphylum: Vertebrata, Class: Mammalia, Order: Carnivora, Family: Canidae, Genus: Canis, Species: familiaris.

    Terminology

    • Aberrant parasite: a parasite that wanders into an organ in which it does not normally live.
    • Ectoparasite: a parasite that lives on the external surface of the host.
    • Endoparasite: a parasite that lives inside the host.
    • Erratic parasite: a parasite that does not have a specific host species.
    • Facultative parasite: a parasite that can live freely but can also parasitize a host.
    • Homoxenous parasite: a parasite that undergoes its entire life cycle in one host species.
    • Incidental parasite: a parasite that is not specific to a particular host species.
    • Infection: the presence of a parasite in or on a host.
    • Infestation: the presence of a parasite on the surface of a host.

    Nematodes

    • Nematodes are covered by a thin cuticle that covers the exterior body surface and extends into all body openings.
    • The cuticle is secreted by the hypodermis, a thin layer beneath the cuticle.
    • Nematodes have spindle-shaped muscle fibers that enable movement.
    • Female nematodes can produce thousands of eggs or larvae each day.
    • Nematode eggs vary greatly in size and composition, and differ in larval stages.

    Nematode Egg Types

    • Ascaroid (ascaris) type (e.g., Toxocara canis)
    • Trichostrongyle (strongyle, hookworm) type (e.g., Ancylostoma caninum)
    • Spiruroid (spirurid) type (e.g., Spirocerca lupi)
    • Trichinelloid (trichuroid) type (e.g., Trichuris vulpis, Capillaria spp.)

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    Test your knowledge of veterinary parasitology, including types of parasites, symbiosis, life cycles, and classification schemes.

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