“…For these reasons, crustaceans, especially amphipods, are an important component of the seabird diet (Belopolsky & Shuntov, 1980; Lydersen et al ., 1989; Mehlum & Gabrielsen, 1993; Węsławski et al ., 1994). This means that seabirds in the Arctic are quite heavily infected with cestodes and acanthocephalans, which use crustaceans as intermediate hosts (Baer, 1956, 1962; Threlfall, 1968, 1971; Leonov & Belogurov, 1970; Leonov et al ., 1970; Bishop & Threlfall, 1974; Galaktionov et al ., 1993; Galaktionov, 1996a, b; Kuklin, 2001; Kuklin & Kuklina, 2005; Kuklin et al ., 2005). For instance, at FJL the infection intensity of the common eider ( Somateria mollissima ) with cestodes Microsomacanthus spp.…”