IA. Origin of Microflora

Question 1

• Shrimp die soon after harvesting and bacteria on the shrimp surface originate from the marine environment or contamination during handling and washing.
• Molluscan shellfish’s microflora depend on the quality of water in which they reside

Answer 1

• Pseudomonas species, Shewanella putrefaciens, Acinetobacater, and Moraxella cause spoilage of shellfish.

Question 2

• may produce histamine during low-temperature storage.

Answer 2

Photobacterium phosphoreum

Question 3

• Tuna, mackerel, and skipjack can lead to the generation of toxic levels of
histamine.

Answer 3

Morganella morganii

Question 4

• can be found on fish taken from subtropical and tropical waters.

Answer 4

Bacillus, Coryneforms, and Micrococcus

Question 5

• dominate on fish and shellfish taken from temperate waters.

Answer 5

• Acinetobacter, Aeromonas, Cytophaga,
Flavobacterium, Moraxella, Pseudomonas,
Shewanella, and Vibrio

Question 6

• are associated with the feathers.

Answer 6

Acinetobacter and Moraxella

Question 7

• can be found on the hide.

Answer 7

Staphylococcus, Micrococcus, and Pseudomonas