===== Bioluminescence - visual signaling - bioluminescent signaling ===== * through chemical reactions or bacteria (eg. dinoflagelates emit light when agitated): * absorb light * emit light * scatter light * all energy is transferred into light (no heat emission) -- energy aquired from the sun or food * used for: * finding food * attracting mates * defense/camouflage * light organs: systems of lenses, mirrors, irises, light guides , color filters and shutters * organs: suckers (shallow water) - light organs (deep ocean) -- both used for communication * interensting transformations in the following organisms: * luminous responses in gelatinous species (jellies): http://lifesci.ucsb.edu/~biolum/organism/photo.html -- The hydromedusa Aequorea victoria is probably the most famous bio luminescent marine organism. Calcium-activated photoprotein and green-fluorescent protein (GFP) were first discovered and cloned from this cnidarian. * octopus * squid * cuttlefish * bact. Vibrio fisceri does not emit light until the population of cells has reached a concentrated culture: * population density influences light emission * population can sense its own concentration * [[quorum sensing]] + cell to cell communication: * a. send: cell announcing their existence to their neighbours +determining whether many cells are present (through a signal molecule) * b. receive message * c. translate message * d. act upon message (emit light) ==== general info ==== * introduction to bioluminescence: http://www.bio.cmu.edu/courses/03441/TermPapers/97TermPapers/lux/bioluminescence.html * symposia, stories, references, images... http://www.lifesci.ucsb.edu/~biolum/ * resources: http://siobiolum.ucsd.edu/Biolum_web.html * "glow in the dark organisms (bacteria, funghi, plants, insects): http://www.luxgene.com/ ==== creatures ==== * the mysterious firefly squid > http://www.city.uozu.toyama.jp/en/htrk/index.html) ==== images ==== * http://scilib.ucsd.edu/sio/nsf/fguide/annelida.html * http://biology.fullerton.edu/courses/biol_403/Web/zoobookmarks.html * http://www.imagequest3d.com/pages/current/pictureoftheweek/stomatopod/stomatopod.htm * http://www.imagequest3d.com/catalogue/larvalforms/index.htm ==== catalog information ==== * http://www.imagequest3d.com/stock/tearsheets/index.htm ==== fun with bioluminescent bacteria ==== Here are all the instructions you will need for growing temperate-tropical dinoflagellates in a lab (or at home) -> http://lifesci.ucsb.edu/~biolum/organism/dinohome.html from the 'interesting organism" section -> http://lifesci.ucsb.edu/~biolum/organism/ * related topics: * bioIridescence (counter illumination) * morphology of bioluminescent tissues * cell to cell interactions: http://salmon.mbio.co.jp/mbi/english/shimizu/program/celltocell/celltocell.html * general interests in marine organisms: http://siobiolum.ucsd.edu/Res_interests.html * fungal cell biology group @ uni edinbougough: http://crinan.bch.ed.ac.uk/research/read/fungalcell/ * gelatinous molluscs: http://fp.redshift.com/pelagia/molluscs.htm * microscopic organisms (images): * http://www.pbrc.hawaii.edu/bemf/microangela/ * http://www.earthwindow.com/zoo.html