DOI: 10.38006/00187-838-4.2024.231.232
К. В. Регель, Н. А. Поспехова, В. В. Переверзева, А. А. Примак
Институт биологических проблем Севера ДВО РАН, Магадан
According to the latest revision of the genus Microsomacanthus Lopez-Neyra, 1942 (Cestoda: Hymenolepididae), most parasites of ducks and gulls are assigned to two subgenera that differ morphologically and biologically: the nominative taxon M. (Microsomacanthus) and the new taxon M. (Leuckartсohnacanthus) Galkin, Regel, 2010. Species that have no place in these taxa remain, however, within the genus Microsomacanthus s. l. Molecular-genetic analysis of 9 Microsomacanthus species showed the presence in NJ-phylogenetic tree of nucleotide sequences of a fragment of the 18S rRNA gene of two clades. One of them is formed by 3 species of the subgenus M. (Microsomacanthus), another one – by 5 ones of M. (Leuckartсohnacanthus). Haplotype from Microsomacanthus s. l. arcuata differs significantly from representatives of both haplogroups. This confirms the existence of at least two subgeneric taxa within the genus Microsomacanthus, as well as the presence of species worthy of their own subgenus.