PLEASE NOTE: Not all COSEWIC reports are currently available on the SARA Public Registry. Most of the reports not yet available are status reports for species assessed by COSEWIC prior to May 2002. Other COSEWIC reports not yet available may include those species assessed as Extinct, Data Deficient or Not at Risk. In the meantime, they are available on request from the COSEWIC Secretariat.
The Silver Chub (Macrhybopsis storeriana) is characterized by the presence of a slender barbel at the corners of the mouth, a rounded snout that greatly overhangs the mouth, a large eye on the upper half of the head, fewer than 50 lateral line scales, silvery sides lacking markings and an anteriorly located dorsal fin. It reaches a maximum length of 231 mm total length.
This small-bodied fish inhabits rivers and lakes in the Saskatchewan-Nelson watershed. There is no evidence of decline in abundance or range, and recent sampling suggests that this is a widespread species, but one which is not particularly abundant anywhere in the watershed.
Under Canada’s Species at Risk Act (SARA), the foremost function of COSEWIC is to “assess the status of each wildlife species considered by COSEWIC to be at risk and, as part of the assessment, identify existing and potential threats to the species”.
COSEWIC held two Wildlife Species Assessment Meetings in this reporting year (September 1, 2011 to September 30, 2012) from November 21 to 25, 2011 and from April 29 to May 4, 2012. On February 3, 2012, an Emergency Assessment Subcommittee of COSEWIC also assessed the status of the Tri-colored Bat (Perimyotis subflavus), the Little Brown Myotis (Myotis lucifugus), and the Northern Myotis (Myotis septentrionalis). During the current reporting period COSEWIC assessed the status or reviewed the classification of 67 wildlife species.
For species already found on Schedule 1 of SARA, the classification of 32 species was reviewed by COSEWIC and the status of the wildlife species was confirmed to be in the same category (extirpated - no longer found in the wild in Canada but occurring elsewhere, endangered, threatened or of special concern).
The wildlife species assessment results for the 2011-2012 reporting period include the following:
Special Concern: 15
Data Deficient: 2
Not at Risk: 6
Of the 67 wildlife species examined, COSEWIC reviewed the classification of 49 species that had been previously assessed. The review of classification for 26 of those species resulted in a confirmation of the same status as the previous assessment (see Table 1a).