. The Canadian field-naturalist. 1987 Parker, McKee and Campbell: Status of the Silver Chub 191. Figure \. Silver Chub, Hybopsis storeriana (drawing by C. H. Douglas; courtesy D. E. McAllister, National Museum of Natural Sciences). presence of the species and suggest that there are reproducing populations in Lake St. Clair and the western basin c^ Lake Erie. However, catch-per-unit- effort figures indicate that abundance in both lakes is low (Parker and McKee 1980). Recent inventory activity by the ROM and OMNR has in fact revealed populations in western Lake Erie which were unknown when Scott
. The Canadian field-naturalist. 1987 Parker, McKee and Campbell: Status of the Silver Chub 191. Figure \. Silver Chub, Hybopsis storeriana (drawing by C. H. Douglas; courtesy D. E. McAllister, National Museum of Natural Sciences). presence of the species and suggest that there are reproducing populations in Lake St. Clair and the western basin c^ Lake Erie. However, catch-per-unit- effort figures indicate that abundance in both lakes is low (Parker and McKee 1980). Recent inventory activity by the ROM and OMNR has in fact revealed populations in western Lake Erie which were unknown when Scott and Grossman (1973) noted the species as rare (Grossman, Goodchild, personal communications). Other populations in Lake St. Glair have also been found (Grossman, personal communication). These fish are caught only with large gear in the lakes and the opportunity to obtain records and specimens is therefore limited. They are, however, used as bait fish by anglers in Lake St. Glair and may be common in some localities (Goodchild, personal com- munication). The continued existence of this species in Manitoba is uncertain. The Manitoba Department of Natural Resources believes that if the species is present, it is extremely rare (Parker and McKee 1980). Habitat In Ontario, the Silver Ghub has been collected only from open lake waters; elsewhere, it has been captured in stream and river habitats. GoUections from Lake St. Glair and Lake Erie were mostly from water depths under 10 meters, although capture depths up to 20 meters are reported (Woolman 1895; Fish 1935; Trautman 1957). Kinney (1954) suggested that Silver Ghub preferred the shallow waters of the western basin of Lake Erie to other areas of the lake. Substrate composition ranges from gravel to silt. This species may be intolerant of low dissolved oxygen levels, and seasonal water temperature fluctuations are also thought to limit its distribution. Kinney (1954) considered that the Silver Ghub requires water temperatures abo
Size: 2352px × 1062px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorottawafieldnaturalistsclub, bookcentury1900, bookcolle
