Abstract
Mayflies from six drainage systems in North-Central Canada were examined. The results, together with published distribution records from other systems, indicated that drainage systems arising in the north and flowing to the ocean have a lower diversity of mayflies than drainage systems arising further south (where there is a diverse fauna) and flowing north to the ocean. This suggests that most mayfly dispersal occurs via water, and is most likely by larvae. An arctic species, Baetis lapponicus (Bengtsson), previously reported from Northern Europe, Northeastern Russia and from Baffin Island (Canada) is recorded on mainland Canada for the first time. Its distribution indicates that its dispersal was transatlantic.
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© 1980 Plenum Press, New York
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Cobb, D.G., Flannagan, J.F. (1980). The Distribution of Ephemeroptera in Northern Canada. In: Flannagan, J.F., Marshall, K.E. (eds) Advances in Ephemeroptera Biology. Springer, Boston, MA. https://doi.org/10.1007/978-1-4613-3066-0_12
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DOI: https://doi.org/10.1007/978-1-4613-3066-0_12
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