Test 2: fish

Question 1

stress cause fish to produce

Answer 1

catecholamines and cortisol

Question 2

aeromonas salmonicida cause

Answer 2

lesions in the spleen
skin ulcer/ furunculosis

bacteria

Question 3

A. salmonicidia virulence factors

Answer 3

A layer protein
extracellular products such as toxins and proteases

bacteria

Question 4

treatment for A. salmonicida

Answer 4

oxytetracycline and vaccine

meds can lead to resistance
vaccines do not cover all strains

bacteria

Question 5

enteric red mouth disease is caused by

Answer 5

Yersinia Ruckeri
gram - bacteria

salmonoid

Question 6

Yersinina Ruckeri infect

Answer 6

small fish
mostly salmonid species

enteric red mouth disease

gram - bacteria

Question 7

Yersinia ruckeri cause

Answer 7

heamorrhagic staining in mouth and visera - enteric red mouth disease

gram negative bacteria

Question 8

virulence factor for yersinia ruckeri

Answer 8

plasmid

gram - bacteria
enteric red mouth disease

Question 9

columnaris diesease is caused by

Answer 9

flavobacterium columnaris
gram - bacteria
lesions surrounded by hyperaemic zones

Question 10

Flavobacterium columnaris cause

Answer 10

Columnaris disease
gram - bacteria
lesions on dorsal surface surrounded by hyperaemic zone
patchy white skin

Question 11

enteric septicemia of catfish is caused by

Answer 11

edwarsiella ictaluri
gram - bacteria

Question 12

edwarsiella ictaluri infect

Answer 12

catfish
cause enteric septicemia of catfish

gram - bacteria

Question 13

acute form of Edwarsiella ictaluri cause necrosis in the —

Answer 13

spleen and liver

enteric septicemia of catfish

Question 14

chronic form of Edwarsiella ictaluri cause

Answer 14

typical nasal ulcer

enteric septicemia of catfish
gram - bacteria

Question 15

treatment for edwarsiella ictaluri

Answer 15

Vaccine available (bath vaccine), but works very poorly.
Bacteria susceptible to CCP.

enteric septicemia of catfish
gram - bacteria

Question 16

treatment for Flavobacterium columnaris

Answer 16

Treatment of the disease with antibiotics. No vaccine available

Bacteria is susceptible to CCP but not to the ACP

Columnaris disease
gram - bacteria

Question 17

Renibacterium Salmonimarum cause —

Answer 17

bacterial kidney disease (BKD)
pin-pount hemorrage
granulomas throughout spleen and kidney

gram + bacteria

Question 18

host species for Renibacterium Salmonimarum

Answer 18

Salmonid species are the primary hosts, although the disease has been induced in non-salmonid species.

bacterial kidney disease
gram + bacteria

Question 19

—- is very harmful. Induces haemolytic, proteolytic, exotoxin, catalase and DNAse activities.

Answer 19

Renibacterium Salmonimarum

gram + bacteria

bacterial kidney disease (BKD)

Question 20

virulent factor for renibacterium salmonimarum

Answer 20

p57- promotes intracellular invasion of leucocytes and inducing immunosuppression.

bacterial kidney disease (BKD)
gram + bacteria

Question 21

treatment for Renibacterium Salmonimarum

Answer 21

no vaccine

bacterial kidney disease (BKD)
gram + bacteria

Question 22

Vibrio anguilarm and vibrio salmonicida cause

Answer 22

vibriosis
lesions and external hemorrhage

gram - bacteria

Question 23

— secrete very virulent (lethal) ECPs, that agglutinates fish RBC.

Answer 23

V. anguillarum

Vibriosis
gram -

Question 24

treatment for Vibrio anguilarum

Answer 24

vaccine

Question 25

Piscirickettsia salmonis cause

Answer 25

Piscirickettsiosis white/yellow systemic ulcers, kidney necrosis, anemia | gram - nonmotile bacterium, non-encapsulated

Question 26

how to get Piscirickettsia salmonis

Answer 26

Enters through gills and skin and or infected preys -Horizontal and vertical transmission | salmon disease gram - bacteria

Question 27

Piscirickettsia salmonis uses --- as vectors. Will infect --- and spread and evade host

Answer 27

isopod macrophages | gram - bacteria

Question 28

why does kidney injury cause anemia in fish

Answer 28

no bone marrow blood products made in the kidney

Question 29

Infectious haematopoietic necrosis virus cause

Answer 29

thick trailing fecal cast hemorrage necrosis

Question 30

what animals are infected by IHNV

Answer 30

Infectious haematopoietic necrosis virus salmon fry little fish

Question 31

treatement for IHNV

Answer 31

No commercial vaccines available. Immunization of fish with IHNV induces neutralizing antibodies.

Question 32

the "ebola" of fish viruses

Answer 32

Infectious haematopoietic necrosis virus IHNV

Question 33

Viral Haemorrhagic Septicaemia Virus (VHSV) cause

Answer 33

giant eyes hemorrage in swim bladder and fatty tissue septicemia kidney necrosis- anemia

Question 34

--- causes marked kidney necrosis. Loss of haemopoietic cells. Deadly especially in infected fry.

Answer 34

VHSV

Question 35

treatment for VHSV

Answer 35

-No commercial vaccines available. Immunization of fish with VHSV induces neutralizing antibodies | Viral Haemorrhagic Septicaemia Virus

Question 36

Koi herpesvirus causes

Answer 36

-lethargy, -erratic swimming behaviour -increased mucus production -haemorrhaging within the liver -gill necrosis

Question 37

oomycetes

Answer 37

water molds fungal disease

Question 38

--- usually infects fish that are already diseased (secondary infections) and/or fish that are immunosuppressed.

Answer 38

-Fungi

Question 39

Many fungi, especially the ---- induce lymphocytopenia, and impairment of the haematopoietic organs

Answer 39

oomycetes ## Footnote fungus

Question 40

treatment for oomycetes

Answer 40

malachite green, 0.5% NaCl. ## Footnote fungi