title: Self-sustaining infrapopulation or colony? Redial clonal groups of Himasthla elongata (Mehlis, 1831) (Trematoda: Echinostomatidae) in Littorina littorea (Linnaeus) (Gastropoda: Littorinidae) do not support the concept of eusocial colonies in trematodes.
authors.affiliation: Laboratory of Parasitic Worms, Zoological Institute, Russian Academy of Sciences, St. Petersburg, Russia.|White Sea Biological Station, Zoological Institute, Russian Academy of Sciences, St. Petersburg, Russia.|Department of Invertebrate Zoology, St. Petersburg State University, St. Petersburg, Russia.
authors.forename: Kirill V
authors.initials: KV
authors.lastname: Galaktionov
authors.affiliation: Laboratory of Parasitic Worms, Zoological Institute, Russian Academy of Sciences, St. Petersburg, Russia;
authors.forename: Irina M
authors.initials: IM
authors.lastname: Podvyaznaya
authors.affiliation: White Sea Biological Station, Zoological Institute, Russian Academy of Sciences, St. Petersburg, Russia;
authors.forename: Kirill E
authors.initials: KE
authors.lastname: Nikolaev
authors.affiliation: Laboratory of Parasitic Worms, Zoological Institute, Russian Academy of Sciences, St. Petersburg, Russia;
authors.forename: Ivan A
authors.initials: IA
authors.lastname: Levakin
keywords: Digenea; allometry; castes; developmental arrest; eusociality; feeding behaviour; germinal mass; parthenitae; rediae; reproduction