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diatomeas euglenida keren canales diciembre 2011

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bacillariophyta bacillariophyta ii diatomeas gomphoneis melosira pinnularie surirella eunotia rimoportula Índice euglenida euglenida ii euglena euglena anatomía fisión binaria peranema peranema trichophorum referencias

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protoctista bacillariophyta nombre común diatomeas son organismos pinados y céntricos tienen pared de silicio tienen dos barbas http labotanicadelosbiologos.wikispac es.com/file/view/diatomeas4.jpg

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protoctista bacillariophyta secretan mucilago para pegarse o deslizarse en el substrato abundante en agua salada y dulce almacenan crisolaminaria pigmentos clorofila a y b beta-caroteno fucoxantina

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diatomeas http www.bio.miami.edu/dana/pix/diatoms.jpg diatomeas gomphoneis melosira pinnularie surirella eunotia

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valves clavate symmetrical to the apical axis septae and pseudoseptae present genus comprised of two morphologically distinct groups valves in group 1 with stigmata longitudinal lines and multiseriate striae valves in group 2 with 0-4 stigmata longitudinal lines absent gomphoneis http www.ohio.edu/plantbio/vi slab/algaeimage/jpegs/gomphone ma.jpg http westerndiatoms.colorado.edu/genera letter/g

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melosira valve wall uniform in structure little external ornamentation frustules lack costae septae and spines frustules may form colonies http westerndiatoms.colorado.edu/genera/letter/m http biology.missouristate.edu/phycology/be aver/melosira-w.jpg

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striae chambered may form longitudinal lines external proximal raphe ends dilated bent slightly distal raphe ends deflected http westerndiatoms.colorado edu/genera/letter/p http arts.monash.edu.au/ges/research/cpp/viridis1.gif pinnularie

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surirella frustules isopolar or heteropolar raphe positioned along entire valve margin raphe located within a canal which may be raised above valve surface http westerndiatoms.colorado.edu/ge nera/letter/s http westerndiatoms.colorado.edu/images/sized/i mages/genus_representative_images/surirella_iconic _copy_copy-150x150.jpg

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eunotia se asocia en ambientes de aguas ácidas tiene presencia de rimoportulae labiate processes tiene forma rectangular la valva es asimétrica en el eje apical http www.glerl.noaa.gov/seagrant/glwl /algae/diatoms/images/oueunotia.jpg http protist.i.hosei.ac.jp/pdb/images/heterokontophyta /raphidineae/eunotia/eunotia.jpg

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rimoportula 1 valves with a short raphe 2 raphe extends from valve mantle onto valve face 3 striae uniserate 4 one rimoportula usually present at valve apex http westerndiatoms.colorado.edu/taxa/genus/eunotia

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protoctista euglenida existen aprox 1,400 especies son organismos unicelulares generalmente son células alargadas que poseen uno o dos flagelos tienen película

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protoctista euglenida tienen una vacuola contráctil viven en agua dulce salobre y salada autótrofos heterótrofos o parásitos vida libre o sésil

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euglenida euglena organismo unicelular autótrofo y heterótrofo tiene una mancha ocular tiene película pellicle http bio.rutgers.edu/euglena/euglenas/euglenas.h tg/e_acus15.jpg

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