Enallagma clausum
Morse, 1895
alkali bluet
Enallagma clausum, the alkali bluet, is a in the . It is to North America with a documented range expansion westward in western Canada. The has been studied for - dynamics involving water and gregarines. Its IUCN status is Least Concern with a stable .
Pronunciation
How to pronounce Enallagma clausum: /ɛnəˈlæɡmə ˈklɔːsəm/
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Habitat
Standing water in the parklands ecoregion, including cattle dugouts, irrigation canals, waterfowl projects, and power -associated water bodies.
Distribution
to Manitoba, Saskatchewan, and the northwestern United States; range has expanded westward into Alberta, Canada.
Host Associations
- Arrenurus - water
- Gregarines - protozoan
Ecological Role
for including water and gregarines. Range expansion may facilitate ecological release for the congeneric Enallagma boreale through apparent parasite preference for the novel E. clausum host.
Similar Taxa
- Enallagma borealeClosely related congeneric that co-occurs in western Canada; distinguished by longer establishment in the region and reduced levels compared to E. clausum.
- Enallagma civileBoth are narrow-winged bluet in the same , but E. civile is a found in the southern Great Plains and playa wetlands, whereas E. clausum is associated with alkaline waters in northern prairie regions.
More Details
Conservation status
IUCN status: Least Concern (). is stable with no immediate threats to survival identified.
Research significance
E. clausum has been used as a model organism to test the enemy release hypothesis regarding range expansion, with findings rejecting the hypothesis due to maintained or elevated loads in expanded range sites.
Sources and further reading
- BugGuide
- Wikipedia
- GBIF taxonomy match
- iNaturalist taxon
- NCBI Taxonomy
- Catalogue of Life
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- Table 3: Results of two-way ANOVA testing for differences between host species and site (Old vs. New) for (A) gregarine prevalence and (B) gregarine intensity infections in Enallagma clausum , a native species whose range is expanding in western Canada, and Enallagma boreale , a closely related long-established species.
- Table 2: Results of two-way ANOVA testing for differences between host species and site (Old vs. New) for (A) Arrenurus prevalence and (B) Arrenurus intensity infections in Enallagma clausum , a native species whose range is expanding in western Canada, and Enallagma boreale , a closely related long-established species.