BC Conservation Data Centre: Conservation Status Report
Lymnaea atkaensis
Frigid Lymnaea
| Scientific Name: | Lymnaea atkaensis |
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| English Name: | Frigid Lymnaea |
| Provincial Status Summary | |
| Status: | S4S5 |
| Date Status Assigned: | November 07, 2024 |
| Date Last Reviewed: | November 07, 2024 |
| Reasons: | This species occurs over a large range in northern BC; however there are few records. |
| Range | |
| Range Extent: | G = 200,000-2,500,000 square km |
| Range Extent Estimate (km2): | 205,200 |
| Range Extent Comments: | Occurs in northern BC (Clarke 1981; Lee 2000c). The estimated range (using MapSource) of all the records is ~205,200 km sq. (Lepitzki 2014). |
| Occurrences & Population | |
| Number of Occurrences: | CE = 21 to >300 |
| Comments: | INaturalist has a single record in BC, NE of Atlin from 2022 (INaturalist; observation 127672807; Accessed Nov. 11, 2024). From Lepitzki (2014): Accounting for the multiple records from the same lakes, this species has only been collected from 9 different sites. There are 12 records (8 in Canadian Museum of Nature from 1962 [3 records], 5 from 1972 [but 3 records from 1 lake and 3 from another lake]; and 4 by Forsyth from 1996) in collection databases, all from northern BC. Lee (2000a,c) also found it at 1 new site in northern BC (and mentions 3 other sites where it had been collected by others). |
| Number of Occurrences with Good Viability / Ecological Integrity: | Rank Factor not assessed |
| Number of Occurrences Appropriately Protected & Managed: | Rank Factor not assessed |
| Population Size: | Rank Factor not assessed |
| Threats (to population, occurrences, or area affected) | |
| Degree of Threat: | U = Unknown |
| Trend (in population, range, area occupied, and/or condition of occurrences) | |
| Short-Term Trend: | Rank Factor not assessed |
| Long-Term Trend: | Rank Factor not assessed |
| Other Factors | |
| Intrinsic Vulnerability: | Rank Factor not assessed |
| Environmental Specificity: | Rank Factor not assessed |
| Comments: | Although Clarke (1981) states that it is found in clear, cold oligotrophic lakes in northern BC, Lee (200c) collected in one lake with abundant vegetation (Leptizki 2014). |
| Other Rank Considerations: | |
| Information Gaps | |
| Research Needs: | |
| Inventory Needs: | |
| Stewardship | |
| Protection: | |
| Management: | |
| Version | |
| Author: | Gelling, L. |
| Date: | November 07, 2024 |
| References | |
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iNaturalist. Website. Available: http://www.inaturalist.org/
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Lee, J.S. 2000c. The distribution and ecology of the freshwater molluscs of northern British Columbia. M.Sc Thesis. University of Northern British Columbia, Prince George. 38 pp.
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Lepitzki, D. 2014. General Status rank assessment of freshwater molluscs of British Columbia. Prepared for Canadian Wildlife Service, Environment Canada. Gatineau, PQ.
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Lepitzki, D.A.W. 2013. General status of freshwater gastropods of Canada. Spreadsheet and summary report containing a list of and Canadian and provincial or territorial general status ranks. Prepared for the General Status of Wildlife Species 2015 project. 31 March 2013. Spreadsheet + 614 pp.
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Please visit the website Conservation Status Ranks for information on how the CDC determines conservation status ranks. For global conservation status reports and ranks, please visit the NatureServe website http://www.natureserve.org/.
Suggested Citation:
B.C. Conservation Data Centre. 2024. Conservation Status Report: Lymnaea atkaensis. B.C. Minist. of Environment. Available: https://a100.gov.bc.ca/pub/eswp/ (accessed Jun 8, 2026).