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| Longjaw Cisco |
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| Name and Code |
| Family |
| Salmonidae - trouts and salmons |
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| Species |
| Coregonus alpenae |
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| Taxonomic Authority |
| (Koelz 1924) |
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| Common Name(s) |
| Longjaw Cisco |
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| French Name |
| cisco à grande bouche |
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| Conservation Status |
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| National Rank (NRank) |
| NNR |
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| Provincial Rank (SRank) |
| SNR |
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| COSEWIC Status |
| Extinct (May 2000) |
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| AFS Status |
| Extinct (1,2,4) |
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| Ecological Value |
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| General Abundance |
| extinct |
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| Economic Importance |
| commercial fishery (historical) |
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| Length-Weight Regression Coefficents |
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| Habitat and Feeding |
| General Habitat(s) |
| lacustrine |
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| Trophic Class |
| planktivore/invertivore |
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| Habitat Preference |
| clear, cold, deep waters (51-128 m), usually (94-112 m), at water temperatures of 1.5-11.2°C; preferred water temperature range 3.8-7.0°C |
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| Reproduction |
| Reproductive Guild |
| Nonguarders: Open substratum spawners: Pelagophils |
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| Spawning Habitat(s) |
| lacustrine |
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| Spawning Month(s) |
| November-December |
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| Spawning Temperature (°C) |
| 5.6 |
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| Nursery Habitat(s) |
| lacustrine |
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| Size and Age |
| Adult Length (cm) |
| 25.1-40.6 TL |
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| Adult Weight (kg) |
| 0.12-0.56 |
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| Age at Maturity (yrs) |
| 3-4 |
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| Maximum Length (cm) |
| 54.6 TL |
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| Maximum Weight (kg) |
| 1.857 |
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| Lifespan (yrs) |
| 9 (m); 8 (f) |
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| Ontario Records |
| Record Length (cm) |
| 34.8 TL |
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| Ontario Range Map |
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Ontario Distribution |
| formerly occurred in Lake Huron and Lake Erie; last reported from Lake Erie in 1957 and Lake Huron (Georgian Bay) in 1975 |
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| Photographs |
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| Notes |
| previously considered a synonym of Coregonus zenithicus |
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| Information Sources |
| Becker, G.C. 1983. Fishes of Wisconsin. University of Wisconsin Press. Madison, WI. xii + 1052 pp. |
| Campbell, R.R. 1987. Status of the Longjaw Cisco, Coregonus alpenae, in Canada. Can. Field-Nat. 101(2):241-244. |
| Carlander, K.D. 1969. Handbook of freshwater fishery biology. Volume one. Life history data on freshwater fishes of the United States and Canada, exclusive of the Perciformes. Iowa State University Press. Ames, IA. vi + 752 pp. |
| Coad, B.W. with H. Waszczuk and I. Labignan. 1995. Encyclopedia of Canadian fishes. Museum of Nature and Canadian Sportfishing Productions. Ottawa and Waterdown, ON. viii + 928 pp. |
| Cooper, E.L. 1983. Fishes of Pennsylvania and the northeastern United States. Pennsylvania State University Press. University Park and London. vii + 243 pp. |
| COSEWIC. 2023. Canadian wildlife species at risk. October 2023. Committee on the Status of Endangered Wildlife in Canada. Gatineau, QC. iv + 130 pp. |
| Ditz, K. and E. Holm. 2023. Ontario Fish Species Codes and Names. Ichthyology and Herpetology, Royal Ontario Museum. May 1994. Modified February 2023. |
| Eshenroder, R.L, Vecsei, P., Gorman, O.T., Yule, D.L., Pratt, T.C., Mandrak, N.E., Bunnell, D.B., and Muir, A.M. 2016. Ciscoes (Coregonus, subgenus Leucichthys) of the Laurentian Great Lakes and Lake Nipigon. Great Lakes Fishery Commission Misc Pub. 2016-01. v + 140 pp. |
| Goodyear, C.S., T.A. Edsall, D.M. Ormsby Dempsey, G.D. Moss, and P.E. Polanski. 1982. Atlas of the spawning and nursery areas of Great Lakes fishes. Volume thirteen: Reproductive characteristics of Great Lakes fishes. U.S. Fish and Wildlife Service. Washington, DC. FWS/OBS-82/52. |
| Hubbs, C.L. and K.F. Lagler. 1964. Fishes of the Great Lakes region. University of Michigan Press. Ann Arbor, MI. xv + 213 pp. |
| Integrated Taxonomic Information System (ITIS). 2023. On-line database. http://www.itis.gov, retrieved 02 May 2023. |
| Jelks, H.L., S.J. Walsh, N.M. Burkhead, S. Contreras-Balderas, E. Díaz-Pardo, D.A. Hendrickson, J. Lyons, N.E. Mandrak, F. McCormick, J.S. Nelson, S.P. Platania, B.A. Porter, C.B. Renaud, J. J. Schmitter-Soto, E.B. Taylor, and M.L. Warren, Jr. 2008. Conservation status of imperiled North American freshwater and diadromous fishes. Fisheries 33(8):372-407. |
| Koelz, W. 1929. Coregonid fishes of the Great Lakes. Bull. U.S. Bur. Fish. 43:297-643. |
| Lee, D.S., C.R. Gilbert, C.H. Hocutt, R.E. Jenkins, D.E. McAllister, and J.R. Stauffer, Jr. 1980. Atlas of North American freshwater fishes. North Carolina State Museum of Natural History Publication 1980-12. Raleigh, NC. x + 867 pp. |
| Scott, W.B. 1967. Freshwater fishes of eastern Canada, second edition. University of Toronto Press. Toronto, ON. xii + 137 pp. |
| Scott, W.B. and E.J. Crossman. 1973. Freshwater fishes of Canada. Bull. Fish. Res. Board Can. 184. [1998 Reprint] Galt House Publications Ltd. Oakville, ON. xx + 966 pp. |
| Smith, C.L. 1985. The inland fishes of New York State. New York State Department of Environmental Conservation. Albany, NY. xi + 522 pp. |
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