Cryptic genetic lineages in Eisenia nordenskioldi pallida (Oligochaeta, Lumbricidae)

摘要

Eisenia nordenskioldi pallida Malevic 1956 (Lutnbricidae, Annelida) is widely distributed in various climatic zones of Northern Asia. To study its genetic variation, we collected specimens of this taxon from various populations throughout its distribution and sequenced mitochondrial (cox1) and nuclear (ITS2) loci. Five cryptic genetic lineages were detected in our sample. Lineage 1 was found widespread from West Siberia to Kamchatka, exhibited a low genetic diversity and was mainly confined to anthropogenic habitats, suggesting a rapid dispersion. Lineages 2 and 3 were found in the south of the Russian Far East; lineage 4 in Yakutia, and lineage 5 in Kazakhstan. E. n. pallida, in contrast to the nominative subspecies is often abundant in agricultural lands.