IRIDOVIRIDAE

Question 1

Iridoviridae infect what type of animals?

Answer 1

1. Arthropods
2. Fish
3. Amphibians
4. Reptiles

Question 2

Give the 3 genera under Iridoviridae.

Answer 2

1. Ranaviruses
2. Lymphocystiviruses
3. Megalocytivirus

Question 3

Ranaviruses causes what disease in amphibians and reptiles?

Answer 3

Severe hemorrhagic disease

Question 4

This viral genera is a potential factor in global decline of amphibian populations and is a concern to survival of endangered populations.

Answer 4

Ranaviruses

Question 5

Transmission of Ranaviruses is via?

Answer 5

Waterborne exposure and cannibalism

Question 6

This genera causes large wart-like nodules on the skin of fish.

Answer 6

Lymphocystivirus

Question 7

This viral genera is benign and self-limiting disease described in a broad range of freshwater and marine fish species.

Answer 7

Lymphocystiviruses

Question 8

This genera is highly virulent causing systemic disease in fish (grouper, sea bass, and tilapia).

Answer 8

Megalocytivirus

Question 9

Give the transmission mode of Megalocytivirus.

Answer 9

Waterborne; horizontal spread

Question 10

Megalocytivirus has an emerging and significant impact on the commercial production of both ____ and ____ fish.

Answer 10

food, ornamental

Question 11

Give the virion properties of Iridovirdae.

Answer 11

Icosahedral symmetry; double stranded; cytoplasmic replication

Question 12

Give the diagnostic methods for Iridoviridae.

Answer 12

1. PCR
2. Electron microscopy
3. Histopathology for inclusion bodies
4. Virus isolation