EUKARYOTES — having a true nucleus Chromophyta - containing chlorophyll a and c
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Transcript of EUKARYOTES — having a true nucleus Chromophyta - containing chlorophyll a and c
Coscinodiscus waelesiiPhytopia CD-ROMBigelow Laboratory
EUKARYOTES — having a true nucleusChromophyta - containing chlorophyll a and c
EUKARYOTES (continued): Division Chromophyta Class Cryptophyceae
• Motile • Contain phycobiliproteins• Can be recognized by size and fluorescence (flow cytometry)
Cryptomonashttp://mac2031.fujimi.hosei.ac.jp/PDB/Images/Mastigophora/Cryptomonas/Cryptomonas.jpgwww.unex.es/botanica/ clases.htm
EUKARYOTES (continued): Division Chromophyta Class Bacillariophyceae (Diatoms)
• Cannot swim; Can regulate buoyancy (some can migrate)
• Require silicon; Encased in Pill-box shaped silica frustule
• Important in coastal areas and spring blooms
http://www1.tip.nl/~t936927/art_deco.html www.oregonbd.org/Class/Chap2.htm
Diatoms
P. Roger Sweet, Indiana University
www.coastalstudies.org/stellwagen/phyto.htm
Diatoms
Looking Down on the Valve
New
Side View
epitheca
hypotheca
pennate
centric
Images from http://www.microscopy-uk.org.uk/mag/wimsmall/diadr.html
pennate
pennate
centric
Silica frustule
EUKARYOTES (continued): Division Chromophyta Class Pyrrophyta (Dinoflagellates)
• Motile; Can migrate vertically• “Red tides” and shellfish poisoning• There are autotrophic and heterotrophic species
www.jochemnet.de/fiu/phaeocystis.gif
Dinoflagellates: Some are bioluminescent
http://www.microscopy-uk.org.uk/mag/art98/nocti.html
Noctiluca Noctiluca bloom
www.redtide.whoi.edu/hab/rtphotos/rtphotos.html
EUKARYOTES (continued): Division Chromophyta
Class Prymnesiophyceae (Haptophyceae) Coccolithophores
• CaCO3 skeletal plates• pCO2 increases• DMS production
Near-real-colour SeaWiFS image of a coccolithophore bloom in the Bering Sea, April 1998.earthguide.ucsd.edu/demo/zalaska/08_03_1999a.html
Emiliania huxleyi earthguide.ucsd.edu/images/eg/img/ehuxleyi.gif
www.oregonbd.org/Class/Chap2.htm
EUKARYOTES (continued): Division Chromophyta Class Prymnesiophyceae (Haptophyceae)
Phaeocystis• Jelly-like colonies clog nets and cause big
problems on beaches in Europe• Food-web alterations • DMS producer• Common in Antarctic
www.jochemnet.de/fiu/phaeocystis.gif
http://www.icbm.de/~mathmod/pages/projects/questionnaire/figure/phaeocystis.gif
http://www.coastalstudies.org/stellwagen/phyto.htm www.bio.uva.nl/Lesbrieven/TomTahey/bovenbouwtekst3.htm
EUKARYOTES (continued): Division Chromophyta Class Chrysophyceae
Silicolagellates, Pelagomonas, Aureococcus• Aureococcus brown tides
http://techcenter.southampton.liu.edu/~cgobler/BrownTide.htm
EUKARYOTES (continued): Division Chromophyta Class Raphidophyceae
Chattonella, Fibrocapsa, Heterosigma• toxic or harmful blooms
http://www.uio.no/miljoforum/natur/fj_hav/img/chat_0.gif
Chattonella marina
Chattonella antiqua
www.marine.kais.kyoto-u.ac.jp
Cells of Chattonella marina showing different forms (ovoid, pointed-end and sausage-shaped) and a temporary cyst.www.niwa.cri.nz/pgsf/MarineBiodiversity/images/algae6.jpg