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Species:
Colurella obtusa (Gosse, 1886) 		Valid Name:
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Parent taxa:             Genus / Family / Order / Superorder / Subclass / Class
Colurella: Lepadellidae: Ploima: Pseudotrocha: Monogononta: Eurotatoria 		Taxonomic / nomenclatural notes:
• ?Colurella uncinata (Müller) after Dujardin (1841) [Ref.17194]
not Colurella obtusa (Gosse) after Pejler (1962 partim:figs.56,57) [Ref.11691] [=Colurella tesselata (Glascott)]; Pejler (1962 partim:fig.61) [Ref.11691] [=C. uncinata (Müller)]
• Taxonomic status of this polymorphic species and a number of infraspecific taxa included therein require further investigation. It probably represents a complex of cryptic species with narrower geographic ranges and/or ecological tolerances.
Nomenclatural status:
name in current use 		Species group name declinable:
yes 		Validity:
valid 		Taxon Rank:
Species 		Availability:
available
Original Combination:
Colurus obtusus 		Original Spelling:
Colurus obtusus 		Latest Revision:
Koste, W (1978): Rotatoria. Die Rädertiere Mitteleuropas. Ein Bestimmungswerk, begründet von Max Voigt. Überordnung Monogononta. 673, 234 pls.
Page last modified on: 10.05.2016 by C.D. Jersabek
Original description
 
Hudson, C T;P H Gosse (1886): The Rotifera; or wheel-animalcules, both British and foreign. I+II
v.2, p.103, pl.26, fig.3
Hudson, C T;P H Gosse (1886): The Rotifera; or wheel-animalcules, both British and foreign. I+II v.2, p.103, pl.26, fig.3
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Literature documentations
 
Dujardin, M F (1841): Histoire naturelle des zoophytes. Infusoires, comprenant la physiologie et la classification de ces animaux, et la manière de les étudier à l'aide du microscope.
(?) sub Colurella uncinata (Müller)
Dujardin, M F (1841): Histoire naturelle des zoophytes. Infusoires, comprenant la physiologie et la classification de ces animaux, et la manière de les étudier à l'aide du microscope.
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Observation images
 
Image courtesy of ANSP (Jersabek et al. 2003) [Ref.15798]; female, lateral view
Image courtesy of ANSP (Jersabek et al. 2003) <a href='../../Reference/Index/15798' target='_blank'>[Ref.15798]</a>; female, lateral view
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Althaus, B, 1957 Wissenschaftliche Zeitschrift der Martin-Luther-Universität Halle-Wittenberg6 
Baribwegure, D;H Segers, 2001 Hydrobiologia446/447
Battish, S K, 1992 Freshwater zooplankton of India.  
Buhmann, D, 1981 Institut für Zoologie  
Carlin, B, 1939 Meddelanden Lunds Universitets Limnologiska Institution2 
Dagne, A A;A Herzig;C D Jersabek;Z Tadesse, 2008 International Review of Hydrobiology92Colurella obtusa (Gosse, 1886)
De Smet, W H, 1989 Biologisch Jaarboek (Dodonaea)56 
De Smet, W H, 1989 Natuurwetenschappelijk Tijdschrift69 
De Smet, W H, 1990 Biologisch Jaarboek (Dodonaea)57 
De Smet, W H;J M Bafort, 1990 Biologisch Jaarboek (Dodonaea)58 
Donner, J, 1970 Archiv für Hydrobiologie, Supplement36Colurella obtusa (Gosse, 1886)
Dujardin, M F, 1841 Histoire naturelle des zoophytes. Infusoires, comprenant la physiologie et la classification de ces animaux, et la manière de les étudier à l'aide du microscope.  
Godske Björklund, B, 1972 Acta Zoologica Fennica135 
Hauer, J, 1924 Zoologischer Anzeiger59 
Hauer, J, 1936 Beiträge zur naturkundlichen Forschung in Südwestdeutschland1 
Hauer, J, 1952 Beiträge zur naturkundlichen Forschung in Südwestdeutschland11 
Hudson, C T;P H Gosse, 1886 The Rotifera; or wheel-animalcules, both British and foreign.I+II
Jersabek, C D, 1996 Berichte der naturwissenschaftlich-medizinischen Vereinigung Salzburg11Colurella obtusa obtusa (Gosse, 1886)
Jersabek, C D, 1996 Berichte der naturwissenschaftlich-medizinischen Vereinigung Salzburg11Colurella obtusa (Gosse, 1886)
Jersabek, C D, 2003 Bishop Museum Occasional Papers74Colurella obtusa (Gosse, 1886)
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Colurella obtusa f. aperta Hauer, 1936 junior subjective synonym of nominotypical taxon
Colurella obtusa f. clausa Hauer, 1936 junior subjective synonym of nominotypical taxon
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Colurella obtusa f. aperta Hauer, 1936 junior subjective synonym of nominotypical taxonFormaavailable
Colurella obtusa f. clausa Hauer, 1936 junior subjective synonym of nominotypical taxonFormaavailable
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IUILocality(sorted ascending)
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Ka Wai a Pele (Green Lake)
Macrophytes (Elodea) / Crater lake, freshwater01.05.2001Expedition, Literature / - / Published Information1
L
cf.
Kahakuloa Stream
Moss (submersed) / Stream, freshwater (lowland)04.04.2001Expedition, Literature / - / Published Information4
L
cf.
Kahakuloa Stream
Stream bottom: periphyton, and POM / Stream, freshwater (lowland)04.04.2001Expedition, Literature / - / Published Information4
L
 
Kladensky, swimming pond
Open water / Pond, freshwater15.09.1999CJ unpubl. / - / Unpublished Information, own observations (CJ)1
F
 
Kleinelendbach-KE1
Stream bottom: POM (sand, gravel, mud) / Stream, freshwater (alpine)01.07.2010EX_Gletscherbäche / 2010 / Austria, Hohe Tauern (Alps)1
F
 
Kleinelendbach-KE3
Stream bottom: POM (sand, gravel, mud) / Stream, freshwater (alpine)01.08.2010EX_Gletscherbäche / 2010 / Austria, Hohe Tauern (Alps)1
F
 
Kleiner Feichtauer See
Macrophytes / Pond, freshwater (subalpine)23.08.1990Literature / - / Published Information2
L
 
Krottensee bei Gmunden
Bottom sediments / Pond, freshwater (eutrophic)08.11.1994CJ unpubl. / - / Unpublished Information, own observations (CJ)1
F
 
Krottensee bei Gmunden
Bottom sediments / Pond, freshwater (eutrophic)31.07.1994CJ unpubl. / - / Unpublished Information, own observations (CJ)1
F
 
Krottensee bei Gmunden
Macrophytes (Utricularia, Nymphaea) / Pond, freshwater (eutrophic)31.07.1994CJ unpubl. / - / Unpublished Information, own observations (CJ)1
F
 
Leqinat Lake
Littoral microhabitats / Lake, freshwater (subalpine)02.08.2019CJ in litt. / - / Unpublished Information, in correspondence1
F
 
Limahuli Stream
Moss (submersed, in swift flowing water) / Stream, freshwater (lowland)21.03.2001Expedition, Literature / - / Published Information1
L
 
Limahuli Stream
Periphyton (roots of terrestrial vegetation) / Stream, freshwater (lowland)21.03.2001Expedition, Literature / - / Published Information1
L
 
Limahuli Stream
Stream bottom: POM (cobble, gravel, sand), and filamentous algae / Stream, freshwater (lowland)21.03.2001Expedition, Literature / - / Published Information1
L
 
Lungötz-Annaberg, Waldbad
Open water / Pond, freshwater17.08.2012CJ unpubl. / - / Unpublished Information, own observations (CJ)1
F
 
Mernigsee
Littoral microhabitats / Lake, freshwater (alpine)20.08.1996Literature / - / Published Information1
L
 
Millstätter See
Open water (tychoplanktonic) / Lake, freshwater28.11.2018CJ unpubl. / - / Unpublished Information, own observations (CJ)1
F
 
Minocqua, not further specified
- / -01.01.1916Collection / - / Specimen preparations2048
C
 
Mitterastensee
Macrophytes / Pond, freshwater (alpine pastureland)04.08.1990Literature / - / Published Information2
L
 
Mühlpointhof Lofer, Swimming Pond (old)
Open water / Pond, freshwater (artificial)05.07.2011CJ unpubl. / - / Unpublished Information, own observations (CJ)1
F
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ANSP 0753 Colurella obtusa (Gosse, 1886)
Orig.Id.: Colurella obtusa (Gosse, 1886) 		 females11 
ANSP 1185 Colurella obtusa (Gosse, 1886)
Orig.Id.: Colurella obtusa (Gosse, 1886) 		 females4 
ANSP 1186 Colurella obtusa (Gosse, 1886)
Orig.Id.: Colurella obtusa (Gosse, 1886) 		 female1 
ANSP 1187 Colurella obtusa (Gosse, 1886)
Orig.Id.: Colurella obtusa f. clausa Hauer, 1936 		 female1 
ANSP 1188 Colurella obtusa (Gosse, 1886)
Orig.Id.: Colurella obtusa (Gosse, 1886) 		 females4 
ANSP 1189 Colurella obtusa (Gosse, 1886)
Orig.Id.: Colurella obtusa (Gosse, 1886) 		 females3 
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Geographical Range:
Cosmopolitan, including Antarctic and Pacific regions.
Macrohabitat:
Crater lake, freshwater; Crater lake, freshwater (tropical); Crater lake, oligosaline (tropical); Drainage ditch, freshwater; Lake, freshwater; Lake, freshwater (alpine); Lake, freshwater (dystrophic); Lake, freshwater (mesotrophic); Lake, freshwater (oligotrophic); Lake, freshwater (subalpine); Lake, freshwater (tropical); Marsh, freshwater (montane); Pond, freshwater; Pond, freshwater (alpine pastureland); Pond, freshwater (alpine); Pond, freshwater (alpine, ultraoligotrophic); Pond, freshwater (artificial); Pond, freshwater (eutrophic); Pond, freshwater (subalpine); Pond, freshwater (tropical); Pond, peat bog (alpine); Pool, freshwater (alpine pastureland); Puddle, freshwater; River, freshwater; River, freshwater (lowland); Stream backwater, fresh; Stream, freshwater; Stream, freshwater (alpine); Stream, freshwater (lowland); Taro cultivation pond (lo'i kalo );
Microhabitat:
Algae, benthic; Bottom sediments; Bottom sediments (littoral sand, cobble, gravel); Bottom sediments (predominantly anorganic); Bottom sediments (shallow littoral); Bottom sediments, and POM; Eichhornia crassipes (water hyazinth), interrhizon; Littoral microhabitats; Littoral vegetation (Macrophytes and partly emersed terrestrial plants); Macrophytes; Macrophytes (Ceratophyllum, Potamogeton); Macrophytes (Elodea); Macrophytes (Myriophyllum, Potamogeton, Ranunculus); Macrophytes (Myriophyllum, Utricularia); Macrophytes (Utricularia, Nymphaea); Mixed sample: open water, and periphyton; Moss; Moss (Sphagnum, peat moss); Moss (submersed); Moss (submersed, in swift flowing water); Moss (submersed, semi-emersed); Mud surface; Open water; Open water (littoral); Open water (tychoplanktonic); Periphyton (littoral vegetation); Periphyton (littoral vegetation, roots of terrestrial vegetation); Periphyton (roots of terrestrial vegetation); Reed belt, open water between and periphyton on reed stems; Stream bottom: periphyton, and POM; Stream bottom: POM (cobble, gravel, sand), and filamentous algae; Stream bottom: POM (gravel, stones); Stream bottom: POM (sand, gravel); Stream bottom: POM (sand, gravel, mud); Water fern interrhizon (Azolla sp.), and bottom sediments; Water ferns (Salvinia molesta, Azolla sp.), and water lenses (Lemna spp.), interrhizon;
Temperature:
6.00°C to 32.60°C, avg=19.01°C, n=65 		Redox:
-118.00mV to -27.00mV, avg=-84.00mV, n=7
Oxygen:
0.70mg/l to 14.60mg/l, avg=8.31mg/l, n=26 		Conductivity:
9.00µs/cm to 1946.00µs/cm, avg=204.69µs/cm, n=61
Saturation:
9.00% to 165.00%, avg=101.39%, n=25 		TDS:
56.00mg/l to 458.00mg/l, avg=189.90mg/l, n=10
PH:
4.20 to 9.70, avg=7.77, n=64 		Salinity:
0.00ppt to 0.40ppt, avg=0.18ppt, n=11
Ecology summary:
Eurytopic in stagnant and running freshwater, in perennial and temporary habitats; also in athalassic saline and coastal brackish waters; eurythermic, euryhaline, pH-tolerant (Jersabek & Bolortsetseg, 2010) [Ref.18457].
Food:
 
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Afrotropis- n.s. -- n.s. -- n.s. -- n.s. -- n.s. -
AfrotropisE1 East AfricanAfricaEthiopiaOromiaOromia - n.o.s. -
Antarctis- n.s. -- n.s. -- n.s. -- n.s. -- n.s. -Ant: Dartnall 2003, S.Georgia
Australis- n.s. -- n.s. -- n.s. -- n.s. -- n.s. -
Nearctis- n.s. -- n.s. -- n.s. -- n.s. -- n.s. -
NearctisNA3 Rocky MountainNorth AmericaUnited States of AmericaUtahUtah - n.o.s. -
NearctisNA4 AlleghanyNorth AmericaUnited States of AmericaNew JerseyAtlantic Co.
NearctisNA4 AlleghanyNorth AmericaUnited States of AmericaPennsylvaniaMonroe Co.
NearctisNA4 AlleghanyNorth AmericaUnited States of AmericaWisconsinOneida Co.
Neotropis- n.s. -- n.s. -- n.s. -- n.s. -- n.s. -
Orientalis- n.s. -- n.s. -- n.s. -- n.s. -- n.s. -
OrientalisO3 Indo-ChineseAsiaThailandThailand - n.o.s. -Thailand - n.o.s. -
Pacific- n.s. -- n.s. -- n.s. -- n.s. -- n.s. -
PacificHawaiianPacific (Oceania)United States of America (Hawaii)HawaiiHawaii Co.
PacificHawaiianPacific (Oceania)United States of America (Hawaii)HawaiiKauai Co.
PacificHawaiianPacific (Oceania)United States of America (Hawaii)HawaiiMaui Co.
PacificHawaiianPacific (Oceania)United States of America (Hawaii)HawaiiOahu Co.
PacificPolynesianPacific (Oceania)French PolynesiaTahitiTahiti - n.o.s.
PacificPolynesianPacific (Oceania)TongaHa'apaiTofua
PacificPolynesianPacific (Oceania)VanuatuPénamaAmbae (Aoba)
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