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BERGER Helmut Consulting Engineering Office for Ecology 5020 Salzburg, Austria

SIL, XXXII Congress Budapest, 4-9 August 2013. Monograph of the Hypotricha (Ciliophora), a treatise dealing with a major group of limnetic protists. BERGER Helmut Consulting Engineering Office for Ecology 5020 Salzburg, Austria www.protozoology.com.

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BERGER Helmut Consulting Engineering Office for Ecology 5020 Salzburg, Austria

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  1. SIL, XXXII Congress Budapest, 4-9 August 2013 Monograph oftheHypotricha (Ciliophora), a treatisedealingwith a majorgroupoflimneticprotists BERGER Helmut Consulting Engineering Office for Ecology 5020 Salzburg, Austria www.protozoology.com SupportedbytheAustrian Science Fund (FWF): Project P-23415-B17

  2. SIL, XXXII Congress Budapest, 4-9 August 2013 Hypotrichs arespirotrichousciliatesandthesister-group ofthemainlypelagicoligotrichs spirotrichousciliates hypotrichs (e.g., Stylonychia, Oxytricha, Urostyla) oligotrichs (e.g., Tintinnidium, Strobilidium) euplotids (Euplotes, Aspidisca) Aspidisca Oxytricha Strobilidium Berger H, Monograph oftheHypotricha (Ciliophora), Poster 24

  3. SIL, XXXII Congress Budapest, 4-9 August 2013 Main morphologicalfeaturesofhypotrichousciliates • Body length 50–800 µm, mostspeciesaround 80–200 µm • Body usuallyflatteneddorsoventrally • Prominent oral apparatus (adoral zoneof membranelles and 2 undulatingmembranes) • Cirri (bundlesofcilia) on ventral side • Bristlesrows on dorsal side • 2 ormore macronuclear nodules • Contractilevacuole on leftcellmargin contractilevacuole Note: manynewspeciesarepermanentlydiscovered, forexample, Oxytricha acidotoleransin an acidmininglake in Lower Austria From Weisse, Moser, Scheffel, Stadler, Berendonk, Weithoff & Berger (2013) Berger H, Monograph oftheHypotricha (Ciliophora), Poster 24

  4. SIL, XXXII Congress Budapest, 4-9 August 2013 Biologyandecologyof hypotrichs • Asexual reproductionis, as in mostotherciliates, bytransversedivision • Most limneticspeciesarebenthic, fewpelagic • Somespecies form a lorica, andsomehavesymbioticalgae • Hypotrichs feed on bacteria, flagellates, algae, ciliates, andsometimes on smallmetazoans (e.g., rotifers) • About 800 valid speciesof hypotrichs areknown at present, about 300 ofthemoccur in freshwater;theremainingspeciesinhabittheseaandterrestrialhabitats Stichotricha • Hypotrichs arepresent in almost all non-pelagicsamplesfromlakes, ponds, runningwaters; they also occur in highlysalinewaters (cladotrichids) andsewagetreatmentplants (rare) Berger H, Monograph oftheHypotricha (Ciliophora), Poster 24

  5. SIL, XXXII Congress Budapest, 4-9 August 2013 The Monograph oftheHypotricha (Ciliophora) • Volumes 1–4 alreadyavailable; vols 5 and 6 appear in 2014; publishedby Springer in MonographiaeBiologicae • Interestingfeaturesforlimnologistsandecologists • Unified descriptionsofspecies • Easy tousekeysto all species • Verydetailedecologysection, including all publishedrecordsanddata on generation time, biomass, food, etc • Two-sidedsystematicindex (e.g., Holosticha pullasterandpullaster, Holosticha) Berger H, Monograph oftheHypotricha (Ciliophora), Poster 24

  6. SIL, XXXII Congress Budapest, 4-9 August 2013 Acknowledgements Formoreinformation, seePoster 24 andexhibits(pleasedon‘ttakeaway) The “Monograph oftheHypotricha” was andissupportedby: Austrian Science Fund (FWF) Project P-14778-B06 Project P-20569-B17 Project P-23415-B17 Austrian Academy ofSciences APART, Project 10940 Springer Wilhelm Foissner, University of Salzburg, Austria Berger H, Monograph oftheHypotricha (Ciliophora), Poster 24

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