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Dinoflagellates. Dinoflagellates - . Kingdom Protista Belong to the division Dinophyta Phylum dinoflagellata Are part of phytoplankton Of the 12,000 species most are marine and photosynthetic but a few ingest bits of food (heterotrophic) Primary production is second only to diatoms

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dinoflagellates1
Dinoflagellates -
  • Kingdom Protista
  • Belong to the division Dinophyta
  • Phylum dinoflagellata
  • Are part of phytoplankton
  • Of the 12,000 species most are marine and photosynthetic but a few ingest bits of food (heterotrophic)
  • Primary production is second only to diatoms
  • Sometimes more abundant than diatoms
  • Unicellular eukaryotes
slide3
One flagella encircles the cell in groove and the other is free. The two unequal flagella cause a spiraling swimming motion.
most cells are armored with plates tabulation which may have spine pores and other ornaments
Most cells are armored with plates (tabulation), which may have spine, pores, and other ornaments.
slide7
“Blooms” - buildup neurotoxins in food chain - Biomagnification = “red tides” effect nervous system and lung function. Can kill fish and shell fish and even humans. Saxitoxin (100,000 x more potent then cocaine) and Brevitoxin are examples. Shell fish should be eaten in months with “R” in them - not May thru August.
slide15
Some species are bioluminescent - light is released when luciferin is broken down and the energy is released as light.
slide27

Video-Marine Bioluminescence:

Secret lights in the Sea

slide28

Ostracod Crustacean Demo!

Luciferin is a pigment that is catalyzed by the enzyme Luciferase to generate light.

slide29

Bioluminescing ostracod crustaceans are native to the Sea of Japan.The crustaceans live on the bottom during the day then come to the surface to feed at night. During WWII Japanese soldiers used the dried ostracods to read maps at night.

slide30
Dinoflagellates like zooxanthellae have symbiotic mutualistic relationships with: Coral, Sponges, and Anemones