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COSEWIC assessment and update status report on the mormon metalmark in Canada

Apodemia mormo  
Mormon MetalmarkFrench Common name: Le Mormon
Prairie population 
Saskatchewan 


Extent and Area information 
·        extent of occurrence (EO)(km²) 380 km2
·     specify trend (decline, stable, increasing, unknown)Stable
·     are there extreme fluctuations in EO (> 1 order of magnitude)?Unknown
·         area of occupancy (AO) (km²)~ 30 km2
·     specify trend (decline, stable, increasing, unknown)Stable
·     are there extreme fluctuations in AO (> 1 order magnitude)?Unknown
·         number of extant locations6
·     specify trend in # locations (decline, stable, increasing, unknown)Unknown
·     are there extreme fluctuations in # locations (>1 order of magnitude)?No
·        habitat trend: specify declining, stable, increasing or unknown trend in area, extent or quality of habitatStable
Population information 
·        generation time (average age of parents in the population) (indicate years, months, days, etc.)

One year

·         number of mature individuals (capable of reproduction) in the Saskatchewan  population (or, specify a range of plausible values)200-1000?(large areas of badlands were not adequately surveyed)
·        total population trend:  specify declining, stable, increasing or unknown trend in number of mature individuals

Probably stable

·     if decline, % decline over the last/next 10 years or 3 generations, whichever is greater (or specify if for shorter time period)Unknown
·     are there extreme fluctuations in number of mature individuals (> 1 order of magnitude)? Probably
·        is the total population severely fragmented (most individuals found within small and relatively isolated (geographically or otherwise) populations between which there is little exchange, i.e., < 1 successful migrant / year)?Yes
·     list each population and the number of mature individuals in each123, 36, 12, 9, 21, 6 (minimums for known populations).  Some areas were too large to adequately sample.
·     specify trend in number of populations (decline, stable, increasing, unknown)Unknown
·     are there extreme fluctuations in number of populations (>1 order of magnitude)?No


Rescue Effect
- does species exist elsewhere (in Canada or outside)? Nearest populations are in Montana and North Dakota
- status of the outside population(s)? Not listed
- is immigration known or possible? Possible
- would immigrants be adapted to survive here? Probably
- is there sufficient habitat for immigrants here? Yes - providing that the large areas with the hostplant but apparently lacking metalmarks are in fact suitable
Rescue potential Moderate. The GNP west block habitat connects with badlands in the US