COSEWIC Assessment and Update Status Report on the Aurora Trout in Canada
- Assessment Summary
- Executive Summary
- COSEWIC Mandate, Membership and Definitions
- Lists of Figures and Tables
- Species Information
- Population Size and Trends
- General Biology
- Limiting Factors
- Special Significance of the Species and Evaluation
- Technical Summary
- Acknowledgements, Literature Cited and The Authors
Salvelinus fontinalis timagamiensis
Extent of occurrence
Area of occupancy
Total number of individuals in Canadian population
Number of mature individuals in the Canadian population
Rapid decline and extinction from 2 original sites, reintroduced fish dependent on intervention for survival
Rate of population decline
Precipitous following acidification (acid rain)
Number of sub-populations
Originally 2, now 13, but natural reproduction occurs at only 2 sites
Is the population fragmented?
Number of individuals in each sub-population
Number of extant locations
Number of historic sites from which species has been extirpated
Does the species undergo fluctuations?
Lake acidification by atmospheric deposition of pollutants, competition from introduced species such as yellow perch, and loss and degradation of spawning habitat.
Does species exist outside Canada?
Is immigration known or possible?
- Date Modified: