Chapter 5 -- Algae Flashcards Preview

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Flashcards in Chapter 5 -- Algae Deck (9)
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1
Q

Pyrrophyta

A

algae, dinoflaggellate – cause of “red tide” – they spin in the water due to flagella – give off toxins that cause food poisoning with neurological symptoms – 48 hours after red tide is gone the shellfish should be safe to consume

2
Q

Misc

A

protist – photosyntheic organisms, may or may not have flagella, contains chloroplasts, cell wall composition varies, most are free living in water, mostly non pathogenic

3
Q

Diatoms

A

glassy

4
Q

Gelidium

A

red marine algae used to make agar

5
Q

Alexandrium (aka Gonyaulax)

A

dinoflagellate, produces SAXITOXIN that causes PSP paralytic shellfish poisoning – if cooked well its safe

6
Q

Saxotoxin

A

produced by Alexandrium, causes PSP paralytic shellfish poisoning, safe if cooked well

7
Q

Gambierdiscus

A

mostly in New England/Caribbean – dinoflaggelate, produces cigua toxin in game fish like grouper & red snapper, causes disease CIGUATERA, toxin not inactivated by cooking – death likely

8
Q

CIGUA

A

produced CIGUATERA, not inactiviated by cooking. In game fish, mostly carribean and new england – produced by gambierdiscus

9
Q

Pfiesteria

A

dinoflagellate that produced 2 toxins – waterborne (causes itching and rash) and airborne (brain damage) : attracted to fish feces