Post on 29-Dec-2015
18Silica (SiO2, Silicon Dioxide)
19
• Abundant in Water
• Inert to Enzymatic Attack
• pH buffer; maintains Carbonic Anhydrase Activity
Raphe, Central Nodule, Polar Nodules
Fig. 12-25 in Graham and Wilcox 2000
Fig. 13.1 in Lee 1998 Fig. 13.3 in Lee 1999
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40
MOTILITY A)Shuffling (Mucilage)B)Coordinated Movement (Raphe, Polysaccharide Rods,
Mictotubules, Kinesin, Dynein)
Cell Division(Ploidy Level)
Fig. 12.20 in Graham et al. 2008
Silica Deposition Vesicle
Fig. 12.23 in Graham et al. 2008
Multicellular or Colonial?40 41
MelosiraAsteroniella
42 Licmophora Tabellaria 43
44
Chaetoceros
Skeletonema
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Pennate Sex(Meiosis, Isogamy, Active Gamete, Passive Gamete, Auxospore)
Fig. 12.26 in Graham et al. 2008
Sexual Behavior
1) Synchronous (Favorable)
2) Synchronous (Unfavorable Conditions)
3) Asynchronous (Favorable)
4) Asynchronous (Unfavorable)
1 http://www.daviddarling.info/images/diatoms.jpg
2 http://www.bhikku.net/archives/03/img/diatoms.JPG
3 http://www.zarzora.com/albums/Great-Sand-Sea/silica.jpg
4 http://mynasadata.larc.nasa.gov/images/upwelling.gif
5 http://library.thinkquest.org/5194/picts/ocean%20map.JPEG
6 http://www.islandnet.com/~see/weather/graphics/photos0506/ laketurnover.gif
7 http://www.mholmer.biology.sdu.dk/grafik/snapshot/Pelagic% 20trap.JPG
8 http://dept.bio.unipd.it/~casellato/research/foto/benthic1.jpg
9 http://home.hiroshima-u.ac.jp/fishlab/Dhaku/epizoic%20diatom/Falcula %20hyalina/1st%20ante%20em.jpg
11 http://fce.lternet.edu/publications/presentations/FCEslides/images/Slide17.jpg
12 http://www.epa.vic.gov.au/water/coasts/contentpix/shore.jpg
13 http://www.fbs.leeds.ac.uk/gradschool/BCMSc/graphics/wifs.gif
14 http://hjs.geol.uib.no/marinemicro/maps/0-0-2-map-sediments-facies.jpg
15 http://www.arpa.emr.it/daphne/progetto_mare/images/im_ Pseudo_nitzschia_seriata.jpg
16 http://www.astrographics.com/GalleryPrints/Display/GP2131.jpg
17 http://www.ualg.pt/adiac/intro/frustule.GIF
18 http://www.microscope-microscope.org/applications/sand/LakePowell3.jpg
19 http://wwwdelivery.superstock.com/WI/223/1597/PreviewComp/SuperStock_1597-27246.jpg
20 http://www.astrographics.com/GalleryPrints/Display/GP2131.jpg
21 http://www.priweb.org/ed/pgws/systems/images/diatom.jpg
22 http://www.priweb.org/ed/pgws/systems/images/diatom.jpg
23 http://www.microscopy-uk.org.uk/mag/imgapr02/db2sa.jpg
24 http://www-biol.paisley.ac.uk/bioref/Chromista/Vaucheria_epiphytes.jpg
25 http://www.scienceprogress.org/wp-content/uploads/2008/10/plankton_591.jpg
26 http://courses.bio.psu.edu/fall2005/biol110/tutorials/tutorial30_files/ diatomaceous_earth.jpg
27 http://www.holocaust-history.org/auschwitz/zyklonb/Sample3-diatomaceousearth.jpg
28 http://www.carolina.com/images/en_US//local/products/altview_large/152940_lp.jpg
29 http://www.glerl.noaa.gov/seagrant/GLWL/Protozoa/Ochromonas2.jpg
31 http://www.marlin.ac.uk/imgs/Species/Chromophycota/ o_lamhyp.jpg
32 http://herbarium.biosci.ohio-state.edu/Diatom.jpg
33 http://botit.botany.wisc.edu/toms_fungi/images/saprolegnia.jpg
34 http://myweb.dal.ca/jmarchib/pic.secondary-endo.jpg
35 http://www.gpmatthews.nildram.co.uk/microscopes/diatom1x400.JPG
36 http://www.keweenawalgae.mtu.edu/ALGAL_IMAGES/bacillariophyceans/ Nitzschia_jason3_hcp1_402.jpg
37 http://ww1.prweb.com/prfiles/2008/02/18/278946/MeetFucoPolaroid.jpg
38 http://www.21food.com/userImages/qingdaopengyuan/qingdaopengyuan $928171531.jpg
39 http://www.grs.sund.ac.uk/bsrg_website/staffdet.cfm?Staff=8
40 http://arch.ced.berkeley.edu/kap2/php/Hidden_Ecologies/wp-content/uploads/2006/08/hh_060822%20newsite-1%20melosira_vg%20056-txt-s.JPG
41 http://www.hsu.edu/uploadedImages/Biology/asterionella.jpg
43 http://www.glerl.noaa.gov/seagrant/GLWL/Algae/Diatoms/Images/ MTUTabellaria_fenestrata.jpg
44 http://www.hib.no/avd_al/naturfag/plankton/english/plankton/plankton-algae/diatoms/chaetoceros_concavicornis_300.jpg
45 http://www.dnr.state.md.us/bay/cblife/algae/diatom/skeletonema_costatum _large.jpg