Veterinary Entomology Quiz
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Questions and Answers

Which of the following is a larvicide that interferes with natural growth hormones in mosquito larvae?

  • Methoprene (correct)
  • Paris green
  • DEET
  • Synthetic pyrethroids

    • Which of the following arthropod families is associated with myiasis?

  • Amblyomma, Dermacentor, Ixodes
  • Argas, Ornithodoros, Otobius
  • Calliphora, Lucilia, Chrysomya (correct)
  • Haematopinus, Linognathus, Trichodectes

    • What is the main purpose of using pyrethroids in mosquito control?

  • To promote insect growth
  • To create a breeding ground for larvae
  • To kill adult mosquitoes on contact (correct)
  • To enhance crop growth

    • Which compound is commonly mixed with pyrethroids to enhance their effectiveness?

    <p>Piperonyl butoxide</p> Signup and view all the answers

    What characteristic defines the Phylum Arthropoda?

    <p>Segmented bodies and jointed legs</p> Signup and view all the answers

    Which of the following organisms is classified as a hard tick?

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

    What characteristic of DEET makes it an effective mosquito repellent?

    <p>It provides protection against multiple biting insects.</p> Signup and view all the answers

    In what conditions is spraying insecticides not recommended?

    <p>In fresh water sources</p> Signup and view all the answers

    What is the primary focus of veterinary entomology and acarology?

    <p>Investigation of insecticide resistance</p> Signup and view all the answers

    Which arthropod is not a vector for diseases affecting animals?

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

    What is the lifespan for the entire lifecycle of the haematophagous species discussed?

    <p>7 to 12 days</p> Signup and view all the answers

    What is a direct effect of blood-sucking flies on their hosts?

    <p>Anaemia in young animals</p> Signup and view all the answers

    Which of the following is NOT a disease transmitted mechanically by Musca?

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

    Which type of diseases can Musca act as a mechanical vector for?

    <p>Bacterial, viral, and protozoan diseases</p> Signup and view all the answers

    What is the role of vomit drops in the feeding method of the species discussed?

    <p>To make solid foods fluid for suction</p> Signup and view all the answers

    Which of the following is an intermediate host for certain parasitic species mentioned?

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

    Which disease is specifically mentioned as being mechanically transmitted by Musca?

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

    Which of the following diseases is NOT mechanically transmitted by Musca?

    <p>Fungal infections</p> Signup and view all the answers

    What are the primary symptoms observed in sheep affected by nasal flies?

    <p>Frequent sneezing and nasal discharge</p> Signup and view all the answers

    Which of the following is a potential treatment for sheep affected by nasal flies?

    <p>Rafoxanide drench</p> Signup and view all the answers

    What condition can arise if second stage larvae from nasal flies move towards the brain?

    <p>False gid</p> Signup and view all the answers

    Why is the nasal region of affected sheep described as having a dirty appearance?

    <p>Due to secretion of mucous exudates</p> Signup and view all the answers

    How can sheep be effectively controlled from nasal fly infestations?

    <p>Feeding from narrow troughs smeared in tar</p> Signup and view all the answers

    What is a complication that can occur if larvae are deposited on humans?

    <p>Ocular abrasions and irritation</p> Signup and view all the answers

    What role does tobacco powder play in treating sheep affected by nasal flies?

    <p>It induces sneezing to remove larvae</p> Signup and view all the answers

    What is the common name for Hypoderma bovis?

    <p>Northern Cattle grub</p> Signup and view all the answers

    What characterizes the eggs produced by female fleas?

    <p>They can be sticky or dry depending on species.</p> Signup and view all the answers

    How many larval stages do fleas undergo before pupation?

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

    What triggers a pupa to emerge from its cocoon?

    <p>The bark of a dog or footfall of a host.</p> Signup and view all the answers

    Which of the following morphological characters is NOT associated with Ctenocephalides species?

    <p>Lack of thoracic development.</p> Signup and view all the answers

    What type of feeding behavior do flea larvae exhibit?

    <p>They are semipredatory and can attack adults.</p> Signup and view all the answers

    In what environment do flea eggs typically fall after being produced?

    <p>On bedding or floors.</p> Signup and view all the answers

    Which flea species is known as the human flea?

    <p>Pulex irritans.</p> Signup and view all the answers

    What is the main size range for flea larvae?

    <p>4-10 mm.</p> Signup and view all the answers

    What is the duration of the warble stage of infection in cattle?

    <p>30 days</p> Signup and view all the answers

    Which characteristic leads to the production of greenish yellow tracts in infected cattle due to larvae?

    <p>Migration of second and third stage larvae</p> Signup and view all the answers

    What causes gadding in cattle affected by ox warble flies?

    <p>Persistent buzzing noise of the adult fly</p> Signup and view all the answers

    Which of the following conditions can result from larval entry through the skin in cattle?

    <p>Myiasis-Cutaneous myiasis</p> Signup and view all the answers

    What is the consequence of the first and second stage larvae being present in the oesophageal region of cattle?

    <p>Stenosis of the oesophagus</p> Signup and view all the answers

    Which type of infection can occur as a result of the larvae migrating through the host's tissues?

    <p>Bacterial infection and abscess formation</p> Signup and view all the answers

    What potential risk is associated with the accidental rupture of warbles in infected cattle?

    <p>Anaphylactic shock</p> Signup and view all the answers

    What is the recommended effective insecticide for controlling ox warble flies?

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

    What types of beef can be affected by the presence of larvae in cattle?

    <p>The affected beef is called ‘licked beef’</p> Signup and view all the answers

    Which is NOT a typical effect of adult ox warble flies on cattle?

    <p>Increased feed intake</p> Signup and view all the answers

    Study Notes

    Arthropods of Veterinary Importance

    • Arthropods are a group of invertebrates, including insects, crustaceans, and arachnids.
    • They are significant vectors for various animal diseases.
    • Morphological features, general bionomics, life cycle, and vector potential of various arthropods impacting animals and birds are essential to study.
    • Some of the arthropods studied include bugs (e.g., Cimex), biting midges, black flies, sandflies, mosquitoes, horse flies, warbles, stomach bots, nasal bots, bottle flies, lice, fleas, arachnids (ticks, mites), and mites.
    • Understanding their life cycles and control measures is crucial in veterinary practice.
    • Insecticide and acaricide resistance are important considerations.

    Phylum Arthropoda

    • Arthropoda is a Greek word meaning "joint" (arthros) and "leg" (podos).
    • Arthropods' defining characteristic is the presence of jointed appendages.
    • Further characteristics include Bilateral symmetry, segmented body, chitinous exoskeleton, jointed legs, and a haemocoel.

    External Anatomy of Insects

    • The insect body is divided into three segments: head, thorax, and abdomen.
    • The head bears antennae, eyes, and various mouthparts.
    • The thorax bears three pairs of legs used for locomotion.
    • The abdomen is the posteriormost segment.
    • Wings are an optional feature.

    Mouthparts

    • Various types of mouthparts exist among insects, each adapted for a specific feeding strategy.
    • These can be Prognathous, Hypognathous, or Opisthognathous.
    • Specific mouthparts types are found in insect species; these are important to know in veterinary practice.

    Antennae

    • Antennae are sensory structures in insects, varying in shape and structure, reflecting different species.
    • There are different types of antennae.
    • These antennae aid in various functions (smelling, hearing, feeling)

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    Arthropods Theory Notes 22.10.2021 PDF

    Description

    Test your knowledge on the key concepts of veterinary entomology and acarology. This quiz covers various topics including mosquito control, arthropod classification, and effective repellents. Challenge yourself to identify important characteristics and applications in the field.

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