Copepoda taxon details
Diacyclops thomasi (Forbes S.A., 1882)
356812 (urn:lsid:marinespecies.org:taxname:356812)
accepted
Species
Acanthocyclops thomasi (Forbes S.A., 1882) · unaccepted
Cyclops bicuspidatus thomasi Forbes S.A., 1882 · unaccepted
Cyclops thomasi Forbes S.A., 1882 · unaccepted
Diacyclops bicuspidatus thomasi (Forbes S.A., 1882) · alternative representation
(of Cyclops thomasi Forbes S.A., 1882) Forbes, S.A. (1882). On some Entomostraca of Lake Michigan and adjacent waters. American Naturalist 16:537-543, 640-650, figs. (vii-1882), available online at https://doi.org/10.1086/273120 [details] 
Walter, T.C.; Boxshall, G. (2025). World of Copepods Database. Diacyclops thomasi (Forbes S.A., 1882). Accessed at: https://www.marinespecies.org/copepoda/aphia.php?p=taxdetails&id=356812 on 2026-05-08
Date
action
by
original description
(of Cyclops bicuspidatus thomasi Forbes S.A., 1882) Forbes, S.A. (1882). On some Entomostraca of Lake Michigan and adjacent waters. American Naturalist 16:537-543, 640-650, figs. (vii-1882), available online at https://doi.org/10.1086/273120 [details]
original description (of Cyclops thomasi Forbes S.A., 1882) Forbes, S.A. (1882). On some Entomostraca of Lake Michigan and adjacent waters. American Naturalist 16:537-543, 640-650, figs. (vii-1882), available online at https://doi.org/10.1086/273120 [details]
additional source Baud, A., C. Cuoc & V. Alekseev. (2004). Ultrastructure of the digestive tract of Diacyclops thomasi (Cyclopoida, Copepoda) during different stages of encystment during a summer diapause. Acta Zoologica Copenhagen 85(3):181-189., available online at https://doi.org/10.1111/j.0001-7272.2004.00169.x [details] Available for editors
[request]
additional source Bowers, J.A. (1986). Phosphorus regeneration by the predatory copepod Diacyclops thomasi. Canadian Journal of Fisheries and Aquatic Sciences 43(2):361-365. (English and French), available online at https://doi.org/10.1139/f86-046 [details] Available for editors [request]
additional source Dobberfuhl, D.R., R. Miller & J.J. Elser. (1997). Effects of a cyclopoid copepod (Diacyclops thomasi) on phytoplankton and the microbial food web. <em>Aquatic Microbial Ecology.</em> 12(1):29-37., available online at https://doi.org/10.3354/ame012029 [details] Available for editors [request]
additional source Franke, U. (1989). Katalog zur Sammlung limnischer Copepoden von Prof. Dr. Friedrich Kiefer (Mit einem Gesamtverzeichnis seiner Publikationen). [Catolog of the freshwater copepods of Dr. Friedrich Kiefer.]. <em>Carolinea Beiheft, Karlsrühe.</em> 5:1-433, figs. 1-2.
note: Catalog vial number(s): 3186, 3202, 387 [details] Available for editors [request]
additional source Kiefer, F. (1929). Crustacea Copepoda. 2. Cyclopoida Gnathostoma. <em>Das Tierreich, Berlin und Leipzig.</em> 53:1-102. [German].
page(s): 59-60 [details] Available for editors [request]
additional source Kiefer, F. (1978). Zur Kenntnis des Diacyclops thomasi (S.A. Forbes, 1882) (Copepoda Cyclopoida). [On the knowledge of Diacyclops thomasi (S.A. Forbes, 1882) (Copepoda Cyclopoida).]. <em>Crustaceana (Leiden).</em> 34(2):214-216, figs. 1-2. (19-v-1978)., available online at https://doi.org/10.1163/156854078x00745 [details] Available for editors [request]
additional source Marsh, C.D. (1895). On the Cyclopidae and Calanidae of Lake St. Clair, Lake Michigan, and certain of the inland lakes of Michigan. <em>Bulletin of the Michigan Fish Commission, Lansing.</em> 5:1-24, pls. 1-9. (completed volume in 1897)., available online at https://doi.org/10.5962/bhl.title.40461
note: provided a synonymy, figures, and comments, including the contrasting habitats mentioned in the key couplet on page 13, which clearly establish that he was dealing with Diacyclops thomasi (S.A. Forbes...
[details]
additional source LeBlanc, J.S., W.D. Taylor & O.E. Johannsson. (1997). The feeding ecology of the cyclopoid copepod Diacyclops thomasi in Lake Ontario. Journal of Great Lakes Research 23(3):369-381., available online at https://doi.org/10.1016/s0380-1330(97)70919-5 [details] Available for editors [request]
additional source Nalepa, T.F. (1985). Occurrence of a resting stage in cyclopoid and harpacticoid copepods in nearshore Lake Michigan. Journal of Great Lakes Research 11(1):59-66, figs. 1-4, tab. 1., available online at https://doi.org/10.1016/s0380-1330(85)71744-3 [details] Available for editors [request]
additional source Reed, E.B. & J.G. Aronson. (1989). Seasonal variation in length of copepodids and adults of Diacyclops thomasi (Forbes) in two Colorado montane reservoirs (Copepoda). Journal of Crustacean Biology 9(1):67-76., available online at https://doi.org/10.2307/1548448 [details] Available for editors [request]
additional source Stemberger, R.S. (1985). Prey selection by the copepod Diacyclops thomasi. Oecologia 65(4): 492-497, fig. 1, tabs. 1-6. (iii-1985)., available online at https://doi.org/10.1007/bf00379662 [details] Available for editors [request]
additional source LeBlanc, J.S. (1992). The feeding ecology of the cyclopoid copepod, Diacyclops thomasi, in Lake Ontario. M.Sc. Thesis, University of Waterloo, Ontario, Canada. 77 pp. [details]
additional source Chang, C.Y. & G.S. Min. (2005). Key to the Korean freshwater cyclopoid copepods and their DNA taxonomy. Jung-haeng-Sa Publishing Co., Seoul. 153 pp. [details] Available for editors [request]
additional source Couture, S., C. Hudon, P. Gagnon, Z.E. Taranu, B. Pinel-Alloul, D. Houle, L. Aldamman, C. Beauvais & M. Lachapelle. (2021). Zooplankton communities in Precambrian Shield lakes (Quebec, Canada): responses to spatial and temporal gradients in water chemistry and climate. <em>Canadian Journal of Fisheries and Aquatic Sciences.</em> 78 (5):567 - 579., available online at https://doi.org/10.1139/cjfas-2020-0139 [details] Available for editors [request]
additional source Taranu, Z.E., P. Legendre, E. Cusson & B. Pinel Alloul. (2023). Riverscale distribution of zooplankton in the St. Lawrence River in relation to hydrological networks, hydroperiods and local environmental gradients. <em>Hydrobiologia.</em> 850(21):4779-4800., available online at https://doi.org/10.1007/s10750-023-05259-7 [details] Available for editors [request]
additional source Schell, J.M., C.J. Santos-Flores, P.E. Allen, B.M. Hunker, S. Kloehn, A. Michelson, R.A. Lillie & S.I. Dodson. (2001). Physical-chemical influences on vernal zooplankton community structure in small lakes and wetlands of Wisconsin, U.S.A. <em>Hydrobiologia.</em> 445:37-50., available online at https://doi.org/10.1023/A:1017574316867 [details] Available for editors [request]
additional source Cobbaert, D.D. (2012). Factors driving switches in the primary producer communities of shallow lakes of the Boreal Plains, Alberta, Canada. <em>Ph.D. Thesis, University of Alberta, Edmonton, Alberta, Canada.</em> 196 pp., available online at https://doi.org/10.7939/R3M902B6R [details] Available for editors [request]
additional source Loewen, C.J. (2017). Stressor response and spatial dynamics of mountain lake communities. <em>Ph.D. Thesis, University of Alberta, Edmonton, Alberta, Canada.</em> 178 pp., available online at https://doi.org/10.7939/R3H12VN4D [details] Available for editors [request]
additional source MacLennan, M.M. (2015). Cumulative Impacts of Multiple Stressors on Aquatic Communities: Novel Fish Predators in Warming Mountain Lakes. <em>Ph.D. Thesis, University of Alberta, Edmonton, Alberta, Canada.</em> 199 pp. [details] Available for editors [request]
additional source Pinel-Alloul, B. & A. Patoine. (2000). Comparative Impact of Natural Fires and Forest Logging on Zooplankton Communities of Boreal Lakes. <em>Sustainable Forest Management Network Final Report.</em> 39 pp., available online at https://doi.org/10.7939/R30F4V [details] Available for editors [request]
additional source Chiapella, A.M., H. Grigel, H. Lister, A. Hrycik, B. O'Malley & J.D. Stockwell. (2021). A day in the life of winter plankton: under-ice community dynamics during 24 h in a eutrophic lake. <em>Journal of Plankton Research.</em> 43(6):865-883., available online at https://doi.org/10.1093/plankt/fbab061 [details] Available for editors [request]
additional source Dupuis, A.P. & B.J. Hann. (2009). Warm spring and summer water temperatures in small eutrophic lakes of the Canadian prairies: potential implications for phytoplankton and zooplankton. <em>Journal of Plankton Research.</em> 31(5):489-502., available online at https://doi.org/10.1093/plankt/fbp001 [details] Available for editors [request]
additional source Rollwagen-Bollens, G., S.M. Bollens, A. Gonzalez, J. Zimmerman, T. Lee & J. Emerson. (2013). Feeding dynamics of the copepod Diacyclops thomasi before, during and following filamentous cyanobacteria blooms in a large, shallow temperate lake. <em>Hydrobiologia.</em> 705:101-118., available online at https://doi.org/10.1007/s10750-012-1385-5 [details] Available for editors [request]
additional source Howeth, J.G., J.J. Weis, J. Brodersen, E.C. Hatton & D.M. Post. (2013). Intraspecific phenotypic variation in a fish predator affects multitrophic lake metacommunity structure. <em>Ecology and Evolution.</em> 3(15):5031-5044., available online at https://doi.org/10.1002/ece3.878 [details] Available for editors [request]
additional source Mohammed, A.Z., M. Musa, F.O. Arimoro, Y.I. Auta, P.O. Samuel & B.S. Adama. (2023). Effects of some environmental factors on temporal distribution of zooplankton in Lapai-Gwari stream, Niger State, Nigeria. <em>Annals of Technology Education Practitioners Association of Nigeria (ATEPAN).</em> 6(4):29-39. [details] Available for editors [request]
additional source Redmond, L.E., C.J.G. Loewen & R.D. Vinebrooke. (2018). A functional approach to zooplankton communities in Mountain Lakes stocked with non-native sportfish under a changing climate. <em>Water Resources Research.</em> 54:2362-2375., available online at 10.1002/ 2017WR021956 [details] Available for editors [request]
additional source Symons, C.C., M.T. Pedruski, S.E. Arnott & J.N. Sweetman. (2014). Spatial, Environmental, and Biotic Determinants of Zooplankton Community Composition in Subarctic Lakes and Ponds in Wapusk National Park, Canada. <em>Arctic, Antarctic, and Alpine Research.</em> 46(1):159–190., available online at https://doi.org/10.1657/1938-4246-46.1.159 [details] Available for editors [request]
additional source Ledgerwood, R.D., S.S. Pool, L.G. Gilbreath, S.J. Grabowski & D.A. Smith. (2000). Limnology of selected shallow-water habitats in Lower Granite Reservoir, 1994-95. <em>NOAA (National Oceanic and Atomospheric Administration), National Marine Fisheries Service, Northwest Fisheries Science Center, Seattle, Washington.</em> 121 pp., available online at https://repository.library.noaa.gov/view/noaa/56208 [details] Available for editors [request]
original description (of Cyclops thomasi Forbes S.A., 1882) Forbes, S.A. (1882). On some Entomostraca of Lake Michigan and adjacent waters. American Naturalist 16:537-543, 640-650, figs. (vii-1882), available online at https://doi.org/10.1086/273120 [details]
additional source Baud, A., C. Cuoc & V. Alekseev. (2004). Ultrastructure of the digestive tract of Diacyclops thomasi (Cyclopoida, Copepoda) during different stages of encystment during a summer diapause. Acta Zoologica Copenhagen 85(3):181-189., available online at https://doi.org/10.1111/j.0001-7272.2004.00169.x [details] Available for editors
[request]additional source Bowers, J.A. (1986). Phosphorus regeneration by the predatory copepod Diacyclops thomasi. Canadian Journal of Fisheries and Aquatic Sciences 43(2):361-365. (English and French), available online at https://doi.org/10.1139/f86-046 [details] Available for editors
[request]additional source Dobberfuhl, D.R., R. Miller & J.J. Elser. (1997). Effects of a cyclopoid copepod (Diacyclops thomasi) on phytoplankton and the microbial food web. <em>Aquatic Microbial Ecology.</em> 12(1):29-37., available online at https://doi.org/10.3354/ame012029 [details] Available for editors
[request]additional source Franke, U. (1989). Katalog zur Sammlung limnischer Copepoden von Prof. Dr. Friedrich Kiefer (Mit einem Gesamtverzeichnis seiner Publikationen). [Catolog of the freshwater copepods of Dr. Friedrich Kiefer.]. <em>Carolinea Beiheft, Karlsrühe.</em> 5:1-433, figs. 1-2.
note: Catalog vial number(s): 3186, 3202, 387 [details] Available for editors
[request]additional source Kiefer, F. (1929). Crustacea Copepoda. 2. Cyclopoida Gnathostoma. <em>Das Tierreich, Berlin und Leipzig.</em> 53:1-102. [German].
page(s): 59-60 [details] Available for editors
[request]additional source Kiefer, F. (1978). Zur Kenntnis des Diacyclops thomasi (S.A. Forbes, 1882) (Copepoda Cyclopoida). [On the knowledge of Diacyclops thomasi (S.A. Forbes, 1882) (Copepoda Cyclopoida).]. <em>Crustaceana (Leiden).</em> 34(2):214-216, figs. 1-2. (19-v-1978)., available online at https://doi.org/10.1163/156854078x00745 [details] Available for editors
[request]additional source Marsh, C.D. (1895). On the Cyclopidae and Calanidae of Lake St. Clair, Lake Michigan, and certain of the inland lakes of Michigan. <em>Bulletin of the Michigan Fish Commission, Lansing.</em> 5:1-24, pls. 1-9. (completed volume in 1897)., available online at https://doi.org/10.5962/bhl.title.40461
note: provided a synonymy, figures, and comments, including the contrasting habitats mentioned in the key couplet on page 13, which clearly establish that he was dealing with Diacyclops thomasi (S.A. Forbes...
provided a synonymy, figures, and comments, including the contrasting habitats mentioned in the key couplet on page 13, which clearly establish that he was dealing with Diacyclops thomasi (S.A. Forbes, 1882), the common cyclopoid in Great Lakes plankton, not Diacyclops navus.
additional source LeBlanc, J.S., W.D. Taylor & O.E. Johannsson. (1997). The feeding ecology of the cyclopoid copepod Diacyclops thomasi in Lake Ontario. Journal of Great Lakes Research 23(3):369-381., available online at https://doi.org/10.1016/s0380-1330(97)70919-5 [details] Available for editors
[request]additional source Nalepa, T.F. (1985). Occurrence of a resting stage in cyclopoid and harpacticoid copepods in nearshore Lake Michigan. Journal of Great Lakes Research 11(1):59-66, figs. 1-4, tab. 1., available online at https://doi.org/10.1016/s0380-1330(85)71744-3 [details] Available for editors
[request]additional source Reed, E.B. & J.G. Aronson. (1989). Seasonal variation in length of copepodids and adults of Diacyclops thomasi (Forbes) in two Colorado montane reservoirs (Copepoda). Journal of Crustacean Biology 9(1):67-76., available online at https://doi.org/10.2307/1548448 [details] Available for editors
[request]additional source Stemberger, R.S. (1985). Prey selection by the copepod Diacyclops thomasi. Oecologia 65(4): 492-497, fig. 1, tabs. 1-6. (iii-1985)., available online at https://doi.org/10.1007/bf00379662 [details] Available for editors
[request]additional source LeBlanc, J.S. (1992). The feeding ecology of the cyclopoid copepod, Diacyclops thomasi, in Lake Ontario. M.Sc. Thesis, University of Waterloo, Ontario, Canada. 77 pp. [details]
additional source Chang, C.Y. & G.S. Min. (2005). Key to the Korean freshwater cyclopoid copepods and their DNA taxonomy. Jung-haeng-Sa Publishing Co., Seoul. 153 pp. [details] Available for editors
[request]additional source Couture, S., C. Hudon, P. Gagnon, Z.E. Taranu, B. Pinel-Alloul, D. Houle, L. Aldamman, C. Beauvais & M. Lachapelle. (2021). Zooplankton communities in Precambrian Shield lakes (Quebec, Canada): responses to spatial and temporal gradients in water chemistry and climate. <em>Canadian Journal of Fisheries and Aquatic Sciences.</em> 78 (5):567 - 579., available online at https://doi.org/10.1139/cjfas-2020-0139 [details] Available for editors
[request]additional source Taranu, Z.E., P. Legendre, E. Cusson & B. Pinel Alloul. (2023). Riverscale distribution of zooplankton in the St. Lawrence River in relation to hydrological networks, hydroperiods and local environmental gradients. <em>Hydrobiologia.</em> 850(21):4779-4800., available online at https://doi.org/10.1007/s10750-023-05259-7 [details] Available for editors
[request]additional source Schell, J.M., C.J. Santos-Flores, P.E. Allen, B.M. Hunker, S. Kloehn, A. Michelson, R.A. Lillie & S.I. Dodson. (2001). Physical-chemical influences on vernal zooplankton community structure in small lakes and wetlands of Wisconsin, U.S.A. <em>Hydrobiologia.</em> 445:37-50., available online at https://doi.org/10.1023/A:1017574316867 [details] Available for editors
[request]additional source Cobbaert, D.D. (2012). Factors driving switches in the primary producer communities of shallow lakes of the Boreal Plains, Alberta, Canada. <em>Ph.D. Thesis, University of Alberta, Edmonton, Alberta, Canada.</em> 196 pp., available online at https://doi.org/10.7939/R3M902B6R [details] Available for editors
[request]additional source Loewen, C.J. (2017). Stressor response and spatial dynamics of mountain lake communities. <em>Ph.D. Thesis, University of Alberta, Edmonton, Alberta, Canada.</em> 178 pp., available online at https://doi.org/10.7939/R3H12VN4D [details] Available for editors
[request]additional source MacLennan, M.M. (2015). Cumulative Impacts of Multiple Stressors on Aquatic Communities: Novel Fish Predators in Warming Mountain Lakes. <em>Ph.D. Thesis, University of Alberta, Edmonton, Alberta, Canada.</em> 199 pp. [details] Available for editors
[request]additional source Pinel-Alloul, B. & A. Patoine. (2000). Comparative Impact of Natural Fires and Forest Logging on Zooplankton Communities of Boreal Lakes. <em>Sustainable Forest Management Network Final Report.</em> 39 pp., available online at https://doi.org/10.7939/R30F4V [details] Available for editors
[request]additional source Chiapella, A.M., H. Grigel, H. Lister, A. Hrycik, B. O'Malley & J.D. Stockwell. (2021). A day in the life of winter plankton: under-ice community dynamics during 24 h in a eutrophic lake. <em>Journal of Plankton Research.</em> 43(6):865-883., available online at https://doi.org/10.1093/plankt/fbab061 [details] Available for editors
[request]additional source Dupuis, A.P. & B.J. Hann. (2009). Warm spring and summer water temperatures in small eutrophic lakes of the Canadian prairies: potential implications for phytoplankton and zooplankton. <em>Journal of Plankton Research.</em> 31(5):489-502., available online at https://doi.org/10.1093/plankt/fbp001 [details] Available for editors
[request]additional source Rollwagen-Bollens, G., S.M. Bollens, A. Gonzalez, J. Zimmerman, T. Lee & J. Emerson. (2013). Feeding dynamics of the copepod Diacyclops thomasi before, during and following filamentous cyanobacteria blooms in a large, shallow temperate lake. <em>Hydrobiologia.</em> 705:101-118., available online at https://doi.org/10.1007/s10750-012-1385-5 [details] Available for editors
[request]additional source Howeth, J.G., J.J. Weis, J. Brodersen, E.C. Hatton & D.M. Post. (2013). Intraspecific phenotypic variation in a fish predator affects multitrophic lake metacommunity structure. <em>Ecology and Evolution.</em> 3(15):5031-5044., available online at https://doi.org/10.1002/ece3.878 [details] Available for editors
[request]additional source Mohammed, A.Z., M. Musa, F.O. Arimoro, Y.I. Auta, P.O. Samuel & B.S. Adama. (2023). Effects of some environmental factors on temporal distribution of zooplankton in Lapai-Gwari stream, Niger State, Nigeria. <em>Annals of Technology Education Practitioners Association of Nigeria (ATEPAN).</em> 6(4):29-39. [details] Available for editors
[request]additional source Redmond, L.E., C.J.G. Loewen & R.D. Vinebrooke. (2018). A functional approach to zooplankton communities in Mountain Lakes stocked with non-native sportfish under a changing climate. <em>Water Resources Research.</em> 54:2362-2375., available online at 10.1002/ 2017WR021956 [details] Available for editors
[request]additional source Symons, C.C., M.T. Pedruski, S.E. Arnott & J.N. Sweetman. (2014). Spatial, Environmental, and Biotic Determinants of Zooplankton Community Composition in Subarctic Lakes and Ponds in Wapusk National Park, Canada. <em>Arctic, Antarctic, and Alpine Research.</em> 46(1):159–190., available online at https://doi.org/10.1657/1938-4246-46.1.159 [details] Available for editors
[request]additional source Ledgerwood, R.D., S.S. Pool, L.G. Gilbreath, S.J. Grabowski & D.A. Smith. (2000). Limnology of selected shallow-water habitats in Lower Granite Reservoir, 1994-95. <em>NOAA (National Oceanic and Atomospheric Administration), National Marine Fisheries Service, Northwest Fisheries Science Center, Seattle, Washington.</em> 121 pp., available online at https://repository.library.noaa.gov/view/noaa/56208 [details] Available for editors
[request]
Present Inaccurate Introduced: alien Containing type locality
To Barcode of Life (62 barcodes)
To Biodiversity Heritage Library (1 publication)
To Biodiversity Heritage Library (2 publications) (from synonym Diacyclops bicuspidatus thomasi (Forbes S.A., 1882))
To European Nucleotide Archive, ENA (Diacyclops thomasi)
To GenBank (35 nucleotides; 15 proteins)
To USNM Invertebrate Zoology Arthropoda Collection (38 records)
To Yale Peabody Museum of Natural History (YPM IZ 090666) (from synonym Cyclops bicuspidatus thomasi Forbes S.A., 1882)
To ITIS
To Biodiversity Heritage Library (1 publication)
To Biodiversity Heritage Library (2 publications) (from synonym Diacyclops bicuspidatus thomasi (Forbes S.A., 1882))
To European Nucleotide Archive, ENA (Diacyclops thomasi)
To GenBank (35 nucleotides; 15 proteins)
To USNM Invertebrate Zoology Arthropoda Collection (38 records)
To Yale Peabody Museum of Natural History (YPM IZ 090666) (from synonym Cyclops bicuspidatus thomasi Forbes S.A., 1882)
To ITIS
Unreviewed
Hosted externally, from synonym