Aurora Trout Photos Courtesy of Robert McFarlane of CastingOutLoud.com
Aurora Trout

Aurora Trout

 
Aurora Trout Photos Courtesy of Robert McFarlane of CastingOutLoud.com

Content for this site written by Tyler Dunn

Ontario Fishing Lodges

HOME

Tackle Talk

How to ID Aurora Trout

How to Locate Aurora Trout

How to Help Aurora Trout

Fishing for Aurora Trout

The Aurora's Recovery Strategy

1925 Story of the discovery of the Aurora Trout

Original Carnegie Museum Report of the Discovery

1941 Fishing Trip for The Aurora

Champs Natural History Card

Aurora Trout Photo Gallery

Other Aurora Links

Links

 

The Aurora Trout Recovery Strategy

A recovery strategy must now be developed within one to two years after a species is listed on the Wildlife Species at Risk. In 2006 a recovery plan was released for the Aurora Trout. These strategies help identify what needs to be accomplished for the complete restoration and protection of the species at risk. The ATRT (Aurora Trout Recovery Team) is a group that was formed to help succeed with the task of restoring the Aurora trout.

Primary Goal

The primary goal of the ATRT is to maintain healthy and self-sustaining populations in both Whirligig and Whitepine Lake at a minimum biomass target of 13 kg/ha for Whirligig and 12 kg/ha for Whitepine Lake; A density of adult fish of 29 fish/ha for Whirligig Lake and 20 fish/ha for Whitepine Lake and also a fish population supporting each year class. These goals must also be attained by refraining from any further human intervention (liming).

Secondary Recovery Goals

* Establish a secure self-sustaining Aurora trout population in one or two non-native lakes to act as a wild brood stock refuge to native populations in Whirligig and Whitepine lakes.
* To clarify the taxonomic status of Aurora trout (determine if the Aurora is distinguishable from the brook trout at a molecular genetic level
* To maintain the captive breeding program

Recovery Feasibility

Self supporting populations of Aurora trout have been successfully restored in both of the 2 native lakes. Natural reproduction has been successful in Whirligig since 1990 and Whitepine since 1994. The most recent evaluation of the populations has proven that the population are in great condition with no signs of a missing year class.  A missing year class would suggest that the lakes fish population are under acid stress. In 2001 and 2002 the lakes suffered short-term pH depressions but have since responded with a higher quality water control. Whirligig’s pH level came in at 5.1-5.3 and Whitepine supported a ph level of 5.1. No liming (powered calcite treatments) in either lake has been issued since 1995. This reaction neutralizes the acid in the water, therefore improving the pH level causing aluminum to convert to a nontoxic form. It seems that the survival of the Aurora trout can realistically come true with most of the threats eliminated or minimized.

The native lakes seem to be almost recovered from previous acidification and are currently reproducing naturally. These lakes will continue to be monitored with the expectation of not having to intervene with additional liming. If varying results are taken from the genetic taxonomic assessment, brook trout genes may be added to help increase diversity. Remember, as for most or all cold water species; effects of future climate change remain uncertain.

Facts of Fishing