Aquatic veterinary public health Flashcards
Food poisoning from fish is most likely from what source
Shellfish more common
Fish are poikilotherms what does that mean
Autolysis and multiplication of spoilage organisms occur at a range of relatively low temps.
What is taint
A flavour or odour foreign to the product
Unnatural – chemical pollutant – often petroleum based
‘Natural’ – bacterial or algal – ‘earthy’ flavours particularly in trout and catfish due to chemicals released by cyanobacteria and phytoplankton
What is the Most frequently reported seafood-toxin illness in the world
Ciguatera Poisoning – from carnivorous reef fish such as Grouper and Snapper
Scombroid poisoning is normally from what fish
Mackerel and Tuna
What is the most common cause of zoonotic parasites when eating fish
Mostly from eating raw or lightly cooked fish harbouring larval stages
3 important zoonotic parasites
- Gardia
2 flukes (Trematodes) - Opisthorchis sinensis or the Chinese liver fluke (20 million)
- Opisthorchis viverrini or the Southeast Asian liver fluke (9 million)
man may also be infected by F. hepatica through the ingestion of ________?
contaminated vegetation such as watercress
What is the most common cause/source of infection for parasites
Fish being cultured in small cages situated in urban wastewater systems . Sewage being pumped into a pond as a source of organic fertiliser.
Anisakis simplex is a small white worm, up to 1 cm long but always coiled very tightly and can be very difficult to see in muscle. What is the most common cause of humans contracting it
by eating raw or undercooked fish such as sashimi, ceviche or rollmops
What is creeping disease and what parasite causes it
Human gnathostomiasis is infection by the migrating third-stage larvae of Gnathostoma nematodes.
Shellfish accumulate biotoxins released from plankton
Biotoxins cause PSP, DSP, ASP. What do they mean
Diarrhoeic food poisoning (DSP)
Paralytic shellfish poisoning (PSP)
Amnesic shellfish poisoning (ASP)
