1. HAPTOPHYTES 21

2. Flagella, Haptonema 14 15

3. Haptonema Function
Obstacle Avoidance
2) Adhesion
3) Phagocytosis 8

4. External Covering
2) Organic Scales
1) Naked 24 1

5. Organic Scale Formation
Figs. 10.7, 10.8 in Graham et al. 2008

6. External Covering
3) Coccoliths 5 3
“Coccospheres”

7. Heterococcolith Formation
Fig in Graham et al. 2008

8. Holococcolith Formation
Figs. 10.9, in Graham et al. 2008

9. Coccolith Function Focusing Light Limit Access by Bacteria, Viruses
3) Retard Herbivory
4) Buoyancy Regulation
Fig in Graham et al. 2008

10. Chloroplast Structure
Fig in Graham et al. 2008

11. Haptophyte Chloroplast Origin

12. Cell Division
Fig in Graham et al. 2008

13. Haptophyte Asexual and Sexual Reproduction25 26
Prymnesium Species A (n)
Prymnesium Species B (2n)
Holococcoliths (n)
Heterococcoliths (2n)

14. Evidence for Holococcolith (n) as Gametes,
Heterococcoliths (2n) as Zygotes

15. Haptophyte Significance28
Isochrysis
Pavlova lutheri 29

16. Haptophyte Significance10
Phaeocystis Colony 11
Phaeocystis is a Haptophyte. It forms a gelatinous colony. It is believed
that their decaying remains are the cause of the foam on the sea shore.

17. Haptophyte Significance27
Chrysochromulina 26
Prymnesium parvum

18. Haptophyte Significance
Phaeocystis Colony
DMS (Volatile) Production
Emiliania 22
Fig in Graham et al. 2008

19. Haptophyte Significance6
Oceans = 2/3 of Earth’s Surface
Carbonate Deposits = ½ of Ocean Floor
Haptophytes Contribute ¼ of Carbonate
on Ocean Floor 7

20. Haptophyte Significance30
Haptophytes Contribute at least 25% of Vertical Carbon Transport
to Ocean Floor (Graham et al. 2008)

21. Haptophyte Significance12 17
Isle of Wight Chalk Cliffs 13

22. Haptophyte Phylogeny

23. 1 http://img.search.com/thumb/d/d1/Emiliania_huxleyi_3.jpg/
250px-Emiliania_huxleyi_3.jpg 2 3 4 5 6
sediments-facies.jpg
7 Graham and Wilcox 2000
8 Fig in Graham and Wilcox 2000

24. 15 http://www.jochemnet.de/fiu/hapto1.gif9
CDIAC_glob_c_cycle.gif 10
phaeocystis450.jpg 11 12
lrg625/ _Akaroa_Bay-NZ-coccolith_of_Gephyrocapsa_oceanica-
Apr-05_m05-2.jpg
13 Fig in Wilcox and Graham 2000 14 15
16 Fig in Wilcox and Graham 2000 17

25. 18 http://web.mit.edu/esgbio/www/lm/sugars/cellulose.GIF19 20
20carbonate%20crystals.jpg 21 22 23 24 25 26
images/p_parvumbuzan.jpg 27 28

26. 29 http://www.lib.noaa.gov/korea/korean_aquaculture/algal.files/
microalgal002.gif 30