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Great Lakes Water Life Photo Gallery
Zooplankton
Rotifers
Family Brachionidae

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Class Monogononta - Order Ploima
Family Brachionidae

Image Link Scientific Name Lake Superior Lake Michigan

Lake Huron

Lake Erie Lake Ontario Habitat
Subfamily Brachioninae            
  Anuraeopsis spp.   x x x    

Anuraeopsis fissa courtesy of Michael Plewka

Anuraeopsis fissa   x x x   Warm waters in late spring, summer and early fall.
Anuraeopsis navicula
Anuraeopsis navicula       x    
  Brachionus spp.   x x x x Littoral moving to open lake during algal blooms. Present April through October.
Brachionus angularis courtesy of Michael Plewka
Brachionus angularis x x x x x  
B. bidentatus
Brachionus bidentata     x      
B. budapestinensis
Brachionus budapestinensis       x    
Brachionus calcyflorus courtesy of M Plewka
Brachionus calyciflorus x x x x x  
  Brachionus caudatus   x x x    
B. diversicornis
Brachionus diversicornis         x May have been confused with B. havanaensis.

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Brachionus havanaensis
Brachionus havanaensis   x x   x  
Brachionus quadridentatus courtesy of M Plewka
Brachionus quadridentatus   x x x x .
B. rubens
Brachionus rubens         x Also reported for Lake St. Clair.
  Brachionus urceolaris   x x   x  
B. variabilis
Brachionus variabilis     x      
Dipleuchlanis propatula
Dipleuchlanis propatula            
  Epiphanes spp.       x    
E. clavulata
Epiphanes clavulata       x    
E. pelagica
Epiphanes pelagica       x    
  Euchlanis spp.   x x x x Littoral, occassionally nearshore limnetic. Great Lakes species found May through November.
E. alata female
Euchlanis alata       x    
E. calpidia
Euchlanis calpidia            

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E. deflexa
Euchlanis deflexa       x    
Euchlanis dilatata courtesy of M Plewka
Euchlanis dilatata   x x x x  
  Euchlanis lyra            
E. meneta
Euchlanis meneta x     x    
  Euchlanis oropha           Reported Lake St. Clair
  Euchlanis parva       x    
  Euchlanis pellucida            
  Euchlanis proxima       x    
  Euchlanis pyriformis            
Euchlanis triquetra
Euchlanis triquetra       x    
  Kellicottia spp.   x x x x  
Kellicottia bostoniensis
Kellicottia bostoniensis     x   x Nutrient-enriched embayments and river mouths.
Kellicottia longispina courtesy of M Plewka
Kellicottia longispina x x x x x Found throughout the year, peak May through August. Metalimnetic during stratification.
  Keratella spp.   x x x x The most common limnetic freshwater rotifer genus.
Keratella cochlearis
Keratella cochlearis x x x x x  
Keratella crassa
Keratella crassa x x x x x Some authors believe this species is a variety of K. cochlearis.

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Keratella earlinae
Keratella earlinae x x x x x Some authors believe this species is a variety of K. cochlearis.
Keratella hiemalis
Keratella hiemalis x x x x x Most prevalent in winter.
  Keratella irregularis         x Invasive? Easily confused with K. earlinae.
K. mixta
Keratella mixta           Inland lakes of the Great Lakes region.
Keratella quadrata
Keratella quadrata x x x x x Present throughout the year.
Keratella serrulata
Keratella serrulata curvicornis           Common to the shallow, weedy hard-water inland lakes of Michigan. Adventitious to the Great Lakes.
Keratella taurocephala
Keratella taurocephala         x Common to acid bogs, adventitious in the Great Lakes plankton.
Keratella testudo
Keratella testuda           Inland lakes of the Great Lakes region.
  Keratella ticinensis           Inland lakes of the Great Lakes region.
Keratella valga
Keratella valga tropica   x     x Many varieties and forms. Rare in the Great Lakes.
  Lophocharis spp.     x x   Littoral.

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L. oxysternon
Lophocharis oxysternon       x    
Lophocharis salpina courtesy of M Plewka
Lophocharis salpina     x      
Macrochaetus spp.       x    
Macrochaetus collinsi courtesy of PA Academy of Natural Sciences
Macrochaetus collinsi       x    
Macrochaetus sericus
Macrochaetus sericus       x    
Macrochaetus subquadratus
Macrochaetus subquadratus       x    
  Manfredium eudactylotum            
M. chlaena
Microcodides chlaena       x    
  Mytilina spp.       x   Littoral. All uncommon.
M. macrocera
Mytilina macrocera            
  Mytilina trigona       x    
Mytilina ventralis courtesy of M Plewka Mytilina ventralis       x    
  Mytilina ventralis brevispina       x    
  Mytilina ventralis macracantha            
  Notholca spp.   x x x x Cold stenotherms, primary components of the winter rotifer assemblage.

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Notholca acuminata
Notholca acuminata   x x x x Common inshore during winter and spring.
  Notholca acuminata extensa         x  
Notholca caudata
Notholca caudata   x x     Largest and rarest member of the genus in the Great Lakes. Possible glacial relict and/or ballast water invader. Found only in the Straits of Mackinac.
Notholca foliacea
Notholca foliacea x x x x x Peak abundance in early spring, hypolimnion during the summer.
Notholca labis courtesy of M Plewka
Notholca labis           Uncommon spring limnetic species.
Notholca laurentiae
Notholca laurentiae x x x x x Peak abundance in early spring, hypolimnion during the summer.
Notholca michiganensis
Notholca michiganensis           Michigan inland lakes, not reported for Great Lakes.
Notholca squamula courtesy of M Plewka
Notholca squamula x x x x x Peak abundance in early spring, hypolimnion during the summer. Large form appears in spring at nearshore areas.
  Platyias spp.   x x x x Uncommon, littoral in summer.
  Platyias patulus   x x x x  
Platyias quadricornis courtesy of M Plewka
Platyias quadricornis x x x x    

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  Trichotria spp.   x x x    
  Trichotria pocillum x     x   Littoral.
T. tetractis
Trichotria tetractis x x x x   Littoral, sporadically limnetic spring-fall.
W. spinifera
Wolga spinifera       x    
Subfamily Colurinae            
  Colurella spp.       x    
  Colurella bicuspidata       x    
C. obtusa
Colurella obtusa       x    
  Colurella uncinata       x    

Lepadella spp.   x x x   Littoral, uncommon in the limnetic zone.
Lepadella acuminata courtesy of M Plewka Lepadella acuminata       x    
L. aspida
Lepadella aspida       x    
L. cristata
Lepadella cristata           Pond species.
L. ehrenbergi
Lepadella ehrenbergi       x    
Lepadella ovalis courtesy of M Plewka
Lepadella ovalis   x   x    
Lepadella patella courtesy of M Plewka
Lepadella patella   x x x    
L. rhomboides
Lepadella rhomboides       x    
Lepadella triptera courtesy of M Plewka
Lepadella triptera       x    
  Squatinella spp.       x    
Squatinella mutica courtesy of M Plewka
Squatinella mutica       x    
Squatinella rostrum
Squatinella rostrum       x    

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Based on: A Guide to the Rotifers of the Laurentian Great Lakes. RS Stemberger. 1979. U.S. EPA. EPA-600.
with additions from:
Globe icon indicates link to a non-NOAA site.A Lakewide Comparison of Zooplankton Biomass and Its Species Composition in Lake Erie, 1983-87. Makarewicz, Joseph C.J. Great Lakes Res. 19(2):275-290. 1993.
Globe icon indicates link to a non-NOAA site.A Decade of Predatory Control of Zooplankton Species Composition of Lake Michigan. Makarewicz, Joseph C., Bertram, Paul, Lewis, Theodore, and Brown, Jr., Edward H. J. Great Lakes Res. 21(4):620-640. 1995.
Globe icon indicates link to a non-NOAA site.Feasibility of Shoreside Monitoring of the Great Lakes. Makarewicz, Joseph C. J. Great Lakes Res. 17(3):344-360. 1991.
Globe icon indicates link to a non-NOAA site.Lake Huron Rotifer and Crustacean Zooplankton, APRIL-JULY, 1980. Evans, Marlene S. J. Great Lakes Res. 12(4):281-292. 1986.
Globe icon indicates link to a non-NOAA site.Seasonal Abundance of Planktonic Rotifers in a Nearshore Area of Central Lake Michigan. Duffy, Walter G., and Liston, Charles R. J. Great Lakes Res. 4(1):46-49. 1978.
Globe icon indicates link to a non-NOAA site.Lake Superior: an invasion coldspot? 2003. Igor A. Grigorovich, Alexei V. Korniushin, Derek K. Gray, Ian C. Duggan, Robert I. Colautti& Hugh J. MacIsaac. Hydrobiologia 499: 191-210.

 

Subfamily Brachioninae

Anuraeopsis fissa

Anuraeopsis fissa

Globe icon indicates link to a non-NOAA site.Michael Plewka

Globe icon indicates link to a non-NOAA site.An Image-Based Key To The Zooplankton Of The Northeast (USA)

Profile: Feeds on detritus and bacteria. 90-120um.

More photos and information:

Globe icon indicates link to a non-NOAA site.Information provided with the permission of The Academy of Natural Sciences, Philadelphia, PA

Anuraeopsis navicula

Anuraeopsis navicula

Globe icon indicates link to a non-NOAA site.An Image-Based Key To The Zooplankton Of The Northeast (USA)

Profile: Bacterivorous. 70-100um.

More photos and information:

Globe icon indicates link to a non-NOAA site.Information provided with the permission of The Academy of Natural Sciences, Philadelphia, PA

Brachionus angularis

Brachionus angularis courtesy of M Plewka

Globe icon indicates link to a non-NOAA site.Michael Plewka

Globe icon indicates link to a non-NOAA site.Information provided with the permission of The Academy of Natural Sciences, Philadelphia, PA

Brachionus caudatus=B. angularis var. caudatus

Profile: Brachionus species are indicators of eutrophy.
Detritivore. Bacterivorous. 71-150um

Brachionus bidentata

B. bidentatus

Globe icon indicates link to a non-NOAA site.Information provided with the permission of The Academy of Natural Sciences, Philadelphia, PA

Profiles: Brachionus species are indicators of eutrophy.

B. bidentata - 175-578um.

Brachionus budapestinensis

B. budapestinensis

Globe icon indicates link to a non-NOAA site.Information provided with the permission of The Academy of Natural Sciences, Philadelphia, PA

Profiles: Brachionus species are indicators of eutrophy.

115-170um

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Brachionus calyciflorus

Brachionus calcyflorus

Globe icon indicates link to a non-NOAA site.Michael Plewka

Globe icon indicates link to a non-NOAA site.An Image-Based Key To The Zooplankton Of The Northeast (USA)

Alternative Names: Brachionus calyciflorus=B. pala

Profiles: Brachionus species are indicators of eutrophy. Feed on Chlorella and bacteria, possibly yeast or fungi as well. 180-570um

Brachionus caudatus

 

 

Alternative Names: Brachionus caudatus=B. angularis var. caudatus

Profiles: Brachionus species are indicators of eutrophy. 136-265um

Brachionus diversicornis

B. diversicornis

Globe icon indicates link to a non-NOAA site.Information provided with the permission of The Academy of Natural Sciences, Philadelphia, PA

Profiles: Brachionus species are indicators of eutrophy. Bacterivorous.

Brachionus havanaensis

Brachionus havanaensis

Globe icon indicates link to a non-NOAA site.An Image-Based Key To The Zooplankton Of The Northeast (USA)

Alternative Names: Brachionus havanaensis=Schizocerca diversicornis

Profiles: Brachionus species are indicators of eutrophy. Bacterivorous. 135-350um.

Additional Photos and Information:

Globe icon indicates link to a non-NOAA site.Information provided with the permission of The Academy of Natural Sciences, Philadelphia, PA

Brachionus quadridentatus

 

Brachionus quadridentatus

Globe icon indicates link to a non-NOAA site.Michael Plewka

Globe icon indicates link to a non-NOAA site.Information provided with the permission of The Academy of Natural Sciences, Philadelphia, PA

 

Alternative Names: Brachionus quadridentatus=B. capsuliflorus, B. bakeri, B. tuberculus, & B. tuberculatus

Profiles: Brachionus species are indicators of eutrophy. 188-418um

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Brachionus rubens

B. rubens

Globe icon indicates link to a non-NOAA site.Information provided with the permission of The Academy of Natural Sciences, Philadelphia, PA

Profiles: Brachionus species are indicators of eutrophy.

Brachionus urceolaris

 

 

Profiles: Brachionus species are indicators of eutrophy. 185-280um

Brachionus variabilis

B. variabilis

Globe icon indicates link to a non-NOAA site.Information provided with the permission of The Academy of Natural Sciences, Philadelphia, PA

Profiles: Brachionus species are indicators of eutrophy. 268-376um.

Dipleuchlanis propatula

Dipleuchlanis propatula

Globe icon indicates link to a non-NOAA site.Information provided with the permission of The Academy of Natural Sciences, Philadelphia, PA

 

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Epiphanes clavulata

E. clavulataE. clavulata

Globe icon indicates link to a non-NOAA site.Information provided with the permission of The Academy of Natural Sciences, Philadelphia, PA

 

Epiphanes pelagica

E. pelagica

Globe icon indicates link to a non-NOAA site.Information provided with the permission of The Academy of Natural Sciences, Philadelphia, PA

Alternative Names: Epiphanes pelagica=Notops pelagicus.

Euchlanis alata

E. alata femaleE. alata male

Globe icon indicates link to a non-NOAA site.Information provided with the permission of The Academy of Natural Sciences, Philadelphia, PA

Profile: Found May through November. 260-280um.

Euchlanis calpidia

E. calpidia

Globe icon indicates link to a non-NOAA site.Information provided with the permission of The Academy of Natural Sciences, Philadelphia, PA

Alternative Names: Euchlanis calpidia=Dapidia calpidia

Profile: Found May through November. 280um.

Euchlanis deflexa

E. deflexa

Globe icon indicates link to a non-NOAA site.Information provided with the permission of The Academy of Natural Sciences, Philadelphia, PA

Profile: Found May through November.

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Euchlanis dilatata

Euchlanis dilatata

Globe icon indicates link to a non-NOAA site.Michael Plewka

Globe icon indicates link to a non-NOAA site.An Image-Based Key To The Zooplankton Of The Northeast (USA)

Profile: Found May through November. Eutrophic indicator. Feeds on bacteria, green algae and diatoms. 200-270um.

Additional Information and Photos:

Globe icon indicates link to a non-NOAA site.Information provided with the permission of The Academy of Natural Sciences, Philadelphia, PA

Euchlanis lyra

 

 

Profile: Found May through November.

Euchlanis meneta

E. menetaE. meneta

Globe icon indicates link to a non-NOAA site.Information provided with the permission of The Academy of Natural Sciences, Philadelphia, PA

Profile: Found May through November. 120-140um.

Euchlanis oropha

 

 

Profile: Found May through November.

Euchlanis parva

 

 

Profile: Found May through November. 140um.

Euchlanis pellucida

 

Profile: Found May through November. 300-500um.

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Euchlanis proxima

 

Profile: Found May through November.

Euchlanis pyriformis

 

Profile: Found May through November.

Euchlanis triquetra

Euchlanis triquetra

Globe icon indicates link to a non-NOAA site.An Image-Based Key To The Zooplankton Of The Northeast (USA)

Profile: Found May through November. 210-270um.

Kellicottia bostoniensis

Kellicottia bostoniensis

Globe icon indicates link to a non-NOAA site.An Image-Based Key To The Zooplankton Of The Northeast (USA)

Profile: 360um

More photos and information:

Globe icon indicates link to a non-NOAA site.Information provided with the permission of The Academy of Natural Sciences, Philadelphia, PA

Kellicottia longispina

Kellicottia longispina

Globe icon indicates link to a non-NOAA site.Michael Plewka

Globe icon indicates link to a non-NOAA site.An Image-Based Key To The Zooplankton Of The Northeast (USA)

Alternative Names: Kellicottia longispina=K. longicornis

Profile: Feeds on Mallomonas, Dinobryon, Crysochromulina and Stichococcus. Bacterivorous. 400-860um

More photos and information:

Globe icon indicates link to a non-NOAA site.Information provided with the permission of The Academy of Natural Sciences, Philadelphia, PA

Globe icon indicates link to a non-NOAA site.The Homepage of Ruediger Rudolf

Keratella cochlearis

Keratella cochlearis

Globe icon indicates link to a non-NOAA site.An Image-Based Key To The Zooplankton Of The Northeast (USA)

Alternative Names: Keratella cochlearis = K.c.cochlearis, K.c. tecta, K.c. faluta, K.c. hispida, K.c. robusta, Anuraea cochlearis, A.c. tecta, A tecta, A. stipitata

Some authors consider K. crassa and K. earlinae to be mere varieties of K. cochlearis.

Profile: The most common limnetic freshwater rotifer genus. Three or more species frequently co-occur in the Great Lakes at any time. At least three varieties and many forms. Feeds on particles up to 12um in diameter (detritus, bacteria, small algae, small protozoans). 89-320um.

More photos and information at:

Globe icon indicates link to a non-NOAA site.Information provided with the permission of The Academy of Natural Sciences, Philadelphia, PA

Keratella crassa

Keratella crassa

Globe icon indicates link to a non-NOAA site.An Image-Based Key To The Zooplankton Of The Northeast (USA)

Profile: The most common limnetic freshwater rotifer genus. Three or more species frequently co-occur in the Great Lakes at any time. Some authors believe this species is a variety of K. cochlearis. 140-244um.

More information and photos at:

Globe icon indicates link to a non-NOAA site.Information provided with the permission of The Academy of Natural Sciences, Philadelphia, PA

Keratella earlinae

Keratella earlinae

Globe icon indicates link to a non-NOAA site.An Image-Based Key To The Zooplankton Of The Northeast (USA)

Profile: The most common limnetic freshwater rotifer genus. Three or more species frequently co-occur in the Great Lakes at any time. Some authors believe this species is a variety of K. cochlearis. 152-244um.
K. hiemalis - 149-200um.

More photos and information:

Globe icon indicates link to a non-NOAA site.The Academy of Natural Sciences, Philadelphia, PA

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Keratella hiemalis

Keratella hiemalis

Globe icon indicates link to a non-NOAA site.An Image-Based Key To The Zooplankton Of The Northeast (USA)

Profile: The most common limnetic freshwater rotifer genus. Three or more species frequently co-occur in the Great Lakes at any time. 149-200um.

Keratella irregularis

 

 

 

 

Profile: The most common limnetic freshwater rotifer genus. Three or more species frequently co-occur in the Great Lakes at any time. May be a recent invader, though it is difficult to be certain as it is easily confused with K. earlinae. 152-212um.

Keratella mixta

K. mixta
Globe icon indicates link to a non-NOAA site.The Academy of Natural Sciences, Philadelphia, PA

Profile:

Keratella quadrata

Keratella quadrata

Globe icon indicates link to a non-NOAA site.An Image-Based Key To The Zooplankton Of The Northeast (USA)

 

Alternative Names: Keratella quadrata = K. quadrata canadensis, Anuraea aculeata

Profile: The most common limnetic freshwater rotifer genus. Three or more species frequently co-occur in the Great Lakes at any time. Bacterivorous. 224-385um.

More photos and information:

Globe icon indicates link to a non-NOAA site.The Homepage of Ruediger Rudolf

Keratella serrulata curvicornis

Keratella serrulata

Globe icon indicates link to a non-NOAA site.An Image-Based Key To The Zooplankton Of The Northeast (USA)

Alternative Names: Keratella serrulata curvicornis = Anuraea serrulata

Profile: The most common limnetic freshwater rotifer genus. Three or more species frequently co-occur in the Great Lakes at any time. Adventitious to the Great Lakes. 187-218um.

More photos and information:

Globe icon indicates link to a non-NOAA site.Information provided with the permission of The Academy of Natural Sciences, Philadelphia, PA

Keratella taurocephala

Keratella taurocephala

Globe icon indicates link to a non-NOAA site.An Image-Based Key To The Zooplankton Of The Northeast (USA)

Profile: The most common limnetic freshwater rotifer genus. Three or more species frequently co-occur in the Great Lakes at any time. Adventitious to the Great Lakes. 182-270um.

More photos and information:

Globe icon indicates link to a non-NOAA site.Information provided with the permission of The Academy of Natural Sciences, Philadelphia, PA

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Keratella testuda

Keratella testudo

Globe icon indicates link to a non-NOAA site.An Image-Based Key To The Zooplankton Of The Northeast (USA)

 

Keratella valga tropica

Keratella valga

Globe icon indicates link to a non-NOAA site.An Image-Based Key To The Zooplankton Of The Northeast (USA)

Alternative Names: Keratella valga tropica = K. v. t. monospina

Profile: The most common limnetic freshwater rotifer genus. Three or more species frequently co-occur in the Great Lakes at any time. Many varieties and forms. Rare in the Great Lakes. 162-286um.

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Lophocharis oxysternon

L. oxysternon

Globe icon indicates link to a non-NOAA site.Information provided with the permission of The Academy of Natural Sciences, Philadelphia, PA

Alternative Names: Lophocharis oxysternon = Metopidia oxysternumProfile: 120um.

Lophocharis salpina

Lophocharis salpina

Michael Plewka

Globe icon indicates link to a non-NOAA site.Information provided with the permission of The Academy of Natural Sciences, Philadelphia, PA

Alternative Names: Lophocharis salpina = Metopidia salpina

Profile: L. salpina - 120-136um.

Macrochaetus collinsi

Macrochaetus collinsi

Globe icon indicates link to a non-NOAA site.Information provided with the permission of The Academy of Natural Sciences, Philadelphia, PA

Alternative Names: Macrochaetus = Polychaetus

Macrochaetus sericus

Macrochaetus sericus

Globe icon indicates link to a non-NOAA site.Information provided with the permission of The Academy of Natural Sciences, Philadelphia, PA

Alternative Names: Macrochaetus = Polychaetus

Macrochaetus subquadratus

Macrochaetus subquadratus

Globe icon indicates link to a non-NOAA site.Information provided with the permission of The Academy of Natural Sciences, Philadelphia, PA

Alternative Names: Macrochaetus = Polychaetus

Manfredium eudactylotum

 

 

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Microcodides chlaena

M. chlaenaM. chlaena

Globe icon indicates link to a non-NOAA site.Information provided with the permission of The Academy of Natural Sciences, Philadelphia, PA

Alternative Names: Microcodides chlaena = M. dubius, M. orbiculodiscus, Stephanops chlaena, Microdides orbiculodiscus.

Mytilina spp.

Mytilina ventralis

Globe icon indicates link to a non-NOAA site.Michael Plewka

Globe icon indicates link to a non-NOAA site.Information provided with the permission of The Academy of Natural Sciences, Philadelphia, PA

 

Great Lakes Species: M. macrocera, M. trigona, M. ventralis, M. ventralis brevispina, M. ventralis macracantha

Alternative Names: Mytilina macrocera = Salpina macrocera, Mytilina ventralis = Salpina ventralis, Mytilina ventralis brevispina = Salpina brevispina

Profile: Littoral. All uncommon.

M. ventralis brevispina - 176-215um

M. ventralis macracantha - 250-350um

Notholca acuminata

Notholca acuminata

Globe icon indicates link to a non-NOAA site.An Image-Based Key To The Zooplankton Of The Northeast (USA)

also N. acuminata extensa

Profile: Cold stenotherms, primary components of the winter rotifer assemblage. Feeds on small centric diatoms. 210-350um

N. acuminata extensa - 350-450um

More photos and information:

Globe icon indicates link to a non-NOAA site.Information provided with the permission of The Academy of Natural Sciences, Philadelphia, PA

Notholca caudata

Notholca caudata

Globe icon indicates link to a non-NOAA site.An Image-Based Key To The Zooplankton Of The Northeast (USA)

Profile: Cold stenotherms, primary components of the winter rotifer assemblage. Largest and rarest member of the genus in the Great Lakes. Possible glacial relict and/or ballast water invader. ~400um.

Notholca foliacea

Notholca foliacea

Globe icon indicates link to a non-NOAA site.An Image-Based Key To The Zooplankton Of The Northeast (USA)


Alternative Names: Notholca foliacea = Argonotholca foliacea

Profile: Cold stenotherms, primary components of the winter rotifer assemblage. 140-190um.

More photos and information:

Globe icon indicates link to a non-NOAA site.Information provided with the permission of The Academy of Natural Sciences, Philadelphia, PA

Notholca labis

Notholca labis

Globe icon indicates link to a non-NOAA site.Michael Plewka

Globe icon indicates link to a non-NOAA site.An Image-Based Key To The Zooplankton Of The Northeast (USA)

Profile: Cold stenotherms, primary components of the winter rotifer assemblage. 160-200um.

Notholca laurentiae

Notholca laurentiae

Globe icon indicates link to a non-NOAA site.An Image-Based Key To The Zooplankton Of The Northeast (USA)

Alternative Names: Notholca laurentiae = N. striata, N. scapha

Profile: Cold stenotherms, primary components of the winter rotifer assemblage. 192-250um.

Notholca michiganensis

Notholca michiganensis

Globe icon indicates link to a non-NOAA site.An Image-Based Key To The Zooplankton Of The Northeast (USA)

Profile: Cold stenotherms, primary components of the winter rotifer assemblage. 180-220um

Notholca squamula

Notholca squamula

Globe icon indicates link to a non-NOAA site.Michael Plewka

Globe icon indicates link to a non-NOAA site.An Image-Based Key To The Zooplankton Of The Northeast (USA)

Alternative Names: Notholca squamula = N. striata, N. scapha, N. squamula incertae sedis

Profile: Cold stenotherms, primary components of the winter rotifer assemblage. 112-160um.

N. squamula incertae sedis - Large form, which may be a separate species, appears in spring at nearshore areas. 152-196um.

More photos and information:

Globe icon indicates link to a non-NOAA site.Information provided with the permission of The Academy of Natural Sciences, Philadelphia, PA

Platyias spp.

Platyias quadricornis

Globe icon indicates link to a non-NOAA site.Michael Plewka

Globe icon indicates link to a non-NOAA site.Information provided with the permission of The Academy of Natural Sciences, Philadelphia, PA

Great Lakes Species: P. patulus, P. quadricornis

Alternative Names: Platyias patulus = Brachionis patulus, B. militaris; Platyias quadricornis = Noteus quadricornis

Profile:
P. patulus - May be a detritivore, but can be cultured on Chlorella. 150-265um.
P. quadricornis - 174-360um

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Trichotria spp.

T. tetractis

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Great Lakes Species: T. pocillum, T. tetractis

Alternative Names: Trichotria = Dinocharis

Profile:
T. pocillum - 200-350um.
T. tetractis - 218-380um.

Wolga spinifera

W. spinifera

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Great Lakes Species: Wolga spinifera

Alternative Names: Wolga spinifera = Trichotria spinifera, Distyla spinifera

Subfamily Colurinae

Colurella spp.

C. obtusa

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Great Lakes Species: C. bicuspidata, C. obtusa, C. uncinata

Alternative Names: Colurella obtusa = Colurus obtusus; Colurella uncinata = C. u. bicuspidata, C.u. deflexa, Colurus bicuspidatus, Colurus deflexus

Profile:
C. obtusa - 65um.
C. uncinata - 77-100um.

Lepadella acuminata

Lepadella acuminata

Globe icon indicates link to a non-NOAA site.Michael Plewka

 

Alternative Names: Lepadella acuminata = Metopidia acuminata

Profile: 92-110um.

Lepadella aspida

L. aspida

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Profile:

Lepadella ehrenbergi

 

L. ehrenbergi

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Alternative Names: Lepadella ehrenbergi = Notogonia ehrenbergi, Metopidia ehrenbergi

Profile: 70-94um.

Lepadella ovalis

Lepadella ovalis

Globe icon indicates link to a non-NOAA site.Michael Plewka

Globe icon indicates link to a non-NOAA site.Information provided with the permission of The Academy of Natural Sciences, Philadelphia, PA

Alternative Names: Lepadella ovalis = Metopidia lepadella;

Profile: 93-155um.

Lepadella patella

Lepadella patella

Globe icon indicates link to a non-NOAA site.Michael Plewka

Globe icon indicates link to a non-NOAA site.Information provided with the permission of The Academy of Natural Sciences, Philadelphia, PA

Alternative Names: Lepadella patella = Metopidia bractea

Profile: 90-108um.

Lepadella rhomboides

L. rhomboides

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Alternative Names: Lepadella rhomboides = Metopidia rhomboides

Profile: 110-120um.

Lepadella triptera

Lepadella triptera

Globe icon indicates link to a non-NOAA site.Michael Plewka

Globe icon indicates link to a non-NOAA site.Information provided with the permission of The Academy of Natural Sciences, Philadelphia, PA

 

Alternative Names: Lepadella triptera = Metopidia triptera.

Profile: 65-100um.

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Lepadella cristata

L. cristataL. cristata

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Profile:

Squatinella mutica

Squatinella mutica

Globe icon indicates link to a non-NOAA site.Michael Plewka

Globe icon indicates link to a non-NOAA site.Teichlebewesen: Rädertiere (Rotatoria)

Alternative Names: Squatinella mutica = Stephanops muticus

Squatinella rostrum

Squatinella rostrum

Globe icon indicates link to a non-NOAA site.Teichlebewesen: Rädertiere (Rotatoria)

Alternative Names: Squatinella rostrum = Stephanops lamellaris

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