Crustacean Aquaculture II: Prawns

Question 1

describe the life cycle of prawns

Answer 1

Question 2

What are the main disease agents in prawn aquaculture?

Answer 2

Epicommensal
organisms
Fungi
Bacteria
Viruses

Question 3

What is the future practice of broodstock maturation?

Answer 3

Question 4

Compare the growth rate of pond, raceway and tanks for prawns

Answer 4

Question 5

What is GAV?

Answer 5

Gill-associated virus

• Primarily infects Penaeus monodon
• Closely related to yellow head virus (YHV)
• Can exist as lifelong unapparent infection
• Transmitted from broodstock to progeny
• Present in >96% broodstock

Question 6

What is MoV?

Answer 6

Mourylian Virus

• Endemic in East Coast Penaeus monodon
• Causes mortalities in Kuruma prawns
• Detected in East Coast Banana prawns
• Can exist as a lifelong unapparent infection

Question 7

What are the next steps for improving the health of food stocks?

Answer 7

• Develop and maintain SPF breeding stocks
• Genetic selection for enhanced resistance (SPR)
• Determine re-infection rates of East Coast Stocks