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Chapter 6 marine microbes
- 1. Chapter 6 Marine Microbes (organisms invisible to the naked eye)
- 2. Include viruses, one-celled organisms, and fungi. Microbes play many different roles in marine ecosystem. (structure leads to function) Phytoplankton-planktonic algae Zooplankton-larvae of small animals-ex fish, jellyfish We will discuss 3 of these in detail that you will be accountable for Diatoms Dinoflagellates Forams
- 3. Diatoms Most distinctive of plankton samples Low latitudes-occur in coastal waters Phytoplankton-Contributed to most of primary productivity of an area.
- 4. Diatom Structure Glassy Cell wall 2 valves- 1 large, 1 small Visible geometrically shaped pattern-(helps distinguish between species) Size: 2 micrometers to 4 millimeters
- 5. Reproduction Asexually by fission When cells divides, each daughter gets one of the 2 valves Eventually daughter that inherited smaller valve will reproduces sexually
- 7. Dinoflagellates- structure Globular, single-celled organisms 2 flagella that lie in groves on the center of surface Larger of phytoplankton Look similar to soccer ball under microscope
- 8. Reproduction Asexually by fission Split cell into two Can happen at a rate of one division per day Sexual in some species by gametes If you had two species of Dinoflagellates and species A produced asexually while species B produced sexually, which species to you expect to survive throughout time longer and why?
- 9. Zooxanthellae are collections of dinoflagellates They lack flagella like most species Mutualistic relationships with corals, jellyfish, and mollusks. Some species are responsible for Red Tide algae bloom-large quick population boom Produce toxins, usually cannot eat fish during this time http://www.youtube.com/watch?v=auEePWRqj7Y&safety_mode=true&persist_safety_mode=1&safe=active
- 10. Goodby’s Creek in Mandarin during last Algae Bloom
- 12. Forams Have a pseudopod-organelle that is an extension of the cell surface Used for locomotion and food capture Have a shell deep as Marianas Trench members of zooplankton
- 13. Foram Reproduction Asexual fission most species Sexual reproduction-some species
- 15. Exit Slip Using you knowledge and distinguish between phytoplankton and zooplankton Compare and contrast- Diatoms, Dinoflagellates, and Forams
Editor's Notes
- #5: Left is how appear, right is how their probably appear through our microscopes