. The Canadian field-naturalist. 1989 PARKER: STATUS OF THE DEEPWATER CISCO 169. Figure 1. Deepwater Cisco, Coregonus johannae (from Todd 1980, by permission). Kernan, personal communication) also failed to produce any authenticated specimens of Corego- nus johannae from United States waters. Published information dealing specifically with Coregonus johannae populations in Lake Huron is lacking. Berst and Spangler (1972) state that the larger species of deepwater ciscos (which would include Coregonus johannae) had been selectively removed from Lake Huron by the 1940s as a result of Sea Lamprey
. The Canadian field-naturalist. 1989 PARKER: STATUS OF THE DEEPWATER CISCO 169. Figure 1. Deepwater Cisco, Coregonus johannae (from Todd 1980, by permission). Kernan, personal communication) also failed to produce any authenticated specimens of Corego- nus johannae from United States waters. Published information dealing specifically with Coregonus johannae populations in Lake Huron is lacking. Berst and Spangler (1972) state that the larger species of deepwater ciscos (which would include Coregonus johannae) had been selectively removed from Lake Huron by the 1940s as a result of Sea Lamprey predation and commercial fishing, as was the case in Lake Michigan. The last specimen recorded from Canadian waters of Lake Huron was in 1952 (ROM 19214). Coregonus johannae is now considered extinct in Canadian waters of Lake Huron (R. Payne, personal communication). Habitat Little is known of the habitat of Coregonus johannae. Capture data indicate the depth distribution of this species ranges between 29 and 143 m (Koelz 1929). Koelz also reported this. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Ottawa Field-Naturalists' Club. Ottawa, Ottawa Field-Naturalists' Club
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