Aquatic Animal Diseases and Vaccines
40 Questions
0 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the route of entry of Vibriosis in fish?

  • Through the gill (correct)
  • Through the skin
  • Through the intestine
  • Through the eyes

    • What is the ideal temperature range for Ichthyophthiriasis?

  • 30-35°C
  • 40-45°C
  • 20-26°C (correct)
  • 10-15°C

    • What is the effect of dipping in the vaccine without hyperosmotic shock on antibody titre?

  • Increases antibody titre
  • Depends on the type of vaccine
  • Has no effect on antibody titre
  • Decreases antibody titre (correct)

    • Which of the following methods of immunization is most stressful to fish?

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

    What is the function of Lactobacillus in the gut?

    <p>Produces lactic acid that inhibits putrefactive microbes</p> Signup and view all the answers

    What is the spectrum of Lactococcus bacteriocins?

    <p>Narrow spectrum, only against Gram-positive bacteria</p> Signup and view all the answers

    What is the most effective method of immunization against Ichthyophthiriasis?

    <p>Topical application</p> Signup and view all the answers

    What is the titre of fish injected with homogenized trophozoite preparation without adjuvant?

    <p>1:2560</p> Signup and view all the answers

    In indirect immunofluorescence, the antibody specific for the antigen is?

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

    What is the purpose of ELISA?

    <p>to detect the presence of antigens or antibodies</p> Signup and view all the answers

    What is the effect of c.FK-565 on leucocytes?

    <p>It activates leucocytes in vitro</p> Signup and view all the answers

    What is the purpose of bioassay?

    <p>to detect the presence of toxins</p> Signup and view all the answers

    What is the purpose of nucleic acid-based diagnostics?

    <p>to identify the molecule of interest from a complex mixture</p> Signup and view all the answers

    What is the effect of Vitamin C on immune response in fish?

    <p>It enhances antibody production and complement activity</p> Signup and view all the answers

    What is the purpose of PCR?

    <p>to amplify specific DNA sequences</p> Signup and view all the answers

    What is the effect of Vitamin E on immune response in mammals?

    <p>It enhances both humoral and cellular immune responses</p> Signup and view all the answers

    What is the major benefit of using a drug delivery system?

    <p>improving efficiency of drug under treatment</p> Signup and view all the answers

    What is the effect of exogenous Growth Hormone on lymphocytes in fish?

    <p>It has mitogenic activity on lymphocytes</p> Signup and view all the answers

    Which of the following β-glucans is known for its high water solubility?

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

    What is the source of the immunopotentiator Glycyrrhizin?

    <p>Unknown plant source</p> Signup and view all the answers

    What is another benefit of using a drug delivery system?

    <p>improving bioavailability</p> Signup and view all the answers

    What is the effect of Prolactin on leucocytes in rainbow trout?

    <p>It increases the production of superoxide anion</p> Signup and view all the answers

    What is another benefit of using a drug delivery system?

    <p>improving therapeutic outcome</p> Signup and view all the answers

    What is the effect of Melanin stimulating hormone and Melanin concentrating hormone on head kidney leucocytes?

    <p>They stimulate phagocytosis</p> Signup and view all the answers

    What is the function of Thymosin (28 amino acids)?

    <p>Enhances the production of IL and causes receptors for IL to be displayed on the T lymphocytes</p> Signup and view all the answers

    What is the source of the peptide that activates head kidney leucocytes of salmon?

    <p>Enzymatic hydrolysate of cod protein</p> Signup and view all the answers

    What is the function of cytokines?

    <p>They are involved in the transmission of signals between leukocytes</p> Signup and view all the answers

    What is the effect of EF 203 on kidney leucocytes?

    <p>It increases NBT reduction</p> Signup and view all the answers

    What is the function of Chitin?

    <p>Acts like an unspecific irritant of the leucocytes</p> Signup and view all the answers

    What is the source of the immunopotentiator Laminaran?

    <p>Sublittoral brown algae</p> Signup and view all the answers

    What is the function of FK-156 (Lipopeptide)?

    <p>Enhances resistance to microbial infections in warm-blooded animals</p> Signup and view all the answers

    Which bacterium is reported to produce BLIS, which is antagonistic to Aeromonads and Vibrio spp.?

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

    What is the source of the immunopotentiator Glycans?

    <p>Echinacea purpurea</p> Signup and view all the answers

    What is the mechanism of action of Saccharomyces boulardii against diarrheal infections?

    <p>Removal of toxin receptors by protease activity</p> Signup and view all the answers

    What is the antifungal compound produced by Alteromonas sp.(strain 1-2)?

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

    What is the source of the immunostimulant Macrogard?

    <p>Saccharomyces cerevisiae</p> Signup and view all the answers

    What is the effect of Macrogard on haemocytes in prawns?

    <p>Induces degranulation and activates prophenol oxidase system</p> Signup and view all the answers

    Which immunostimulant is derived from the basidiomycete, Coriolus versicolor?

    <p>Krestin (PSK)</p> Signup and view all the answers

    What is the effect of Lentinan on kidney leucocytes in fishes?

    <p>Increases phagocytic activity</p> Signup and view all the answers

    Which immunostimulant induces the formation of cytotoxic macrophages and generates antitumour activity in humans?

    <p>Schizophyllan (Sizofiran)</p> Signup and view all the answers

    More Like This

    Use Quizgecko on...
    Browser
    Open
    Browser
    Browser