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Research Document - 2012/130

Information in support of a Recovery Potential Assessment of Silver Shiner (Notropis photogenis) in Canada

By L.D. Bouvier, B.S. Schroeder, and N.E. Mandrak

Abstract

In April 1983, the Committee on the Status of Endangered Wildlife in Canada (COSEWIC) assessed the status of Silver Shiner (Notropis photogenis) and determined the designation to be Special Concern. In April 1987, the status was re-examined and confirmed by COSEWIC. This status was re-assessed in May 2011 at which time Silver Shiner was designated as Threatened. The reason given for this designation is that, “This small riverine fish is found at fewer than 10 locations and has a small area of occupancy. The susceptibility of the species to continuing habitat loss and degradation with increasing development pressure resulted in an increase in status.” Silver Shiner is currently listed as Special Concern on Schedule 3 of the Species at Risk Act (SARA).

The Recovery Potential Assessment (RPA) provides information and scientific advice needed to fulfill various requirements of SARA, including informing both scientific and socio-economic elements of the listing decision and permitting activities that would otherwise violate SARA prohibitions and the development of recovery strategies. This Research Document describes the current state of knowledge of the biology, ecology, distribution, population trends, habitat requirements, and threats to Silver Shiner. Mitigation measures and alternative activities related to the identified threats, which can be used to protect the species, are also presented. The information contained in the RPA and this document may be used to inform the development of recovery documents and for assessing permits, agreements and related conditions, as per section 73, 74, 75, 77 and 78 of SARA. The scientific information also serves as advice to the Minister of Fisheries and Oceans Canada regarding the listing of the species under SARA and is used when analyzing the socio-economic impacts of adding the species to the list as well as during subsequent consultations, where applicable. This assessment considers the available scientific data with which to assess the recovery potential of Silver Shiner in Canada.

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