Helminth Assemblages of the Antarctic Black Rockcod, Notothenia coriiceps (Actinopterygii: Nototheniidae) in Coastal Waters near Galindez Island (Argentine Islands, West Antarctic): Temporal Changes in the Endoparasite Community.

Purpose: Analysis and comparison of the helminth assemblages in Antarctic rockcod Notothenia coriiceps collected near the UAS "Akademik Vernadsky" (Argentine Islands, West Antarctica) in 2002 and 2014-2015 were performed to characterise the parasite community and investigate the temporal changes in helminth assemblages and infection parameters.

Methods: All specimens of N. coriiceps (n = 194) were caught at depths of 10-30 m.

Digenea in notothenioid fish in the Beagle Channel (Magellanic sub-region, sub-Antarctica).

Fish of five species of Notothenioidei (104 specimens), Cottoperca trigloides, Patagonotothen brevicauda, P. longipes, P. tessellata and Champsocephalus esox, caught in the Beagle Channel (Magellanic sub-region, sub-Antarctica) were infected with Digenea of nine species (1130 specimens).

New data on the occurrence of Acanthocephala in some fish in Admiralty Bay (South Shetland Islands).

New data on the infection with Acanthocephala of 33 fish caught in Admiralty Bay in November 2007 to January 2008 are given. These fish belong to 5 species: Notothenia rossii (22 immature specimens), Lindbergichthys nudifrons (n = 7), Trematomus bernacchii (n = 1), T. newnesi (n = 1) and Harpagifer antarcticus (n = 2).

Description of a new opecoelid trematode species from nototheniid fish in the Beagle Channel (sub-Antarctica).

Macvicaria magellanica n. sp. (Digenea: Opecoelidae) is the third representative of this genus occurring in fish in the Magellanic sub-region of sub-Antarctica and the first one found in sub-coastal waters in this area (the Beagle Channel).

Description of a new digenean (Zoogonidae) genus and species from sub-Antarctic fish Patagonotothen tessellata.

Whitegonimus ozoufae n. gen., n.

Cystacanths of Acanthocephala in notothenioid fish from the Beagle Channel (sub-Antarctica).

The morphology of relaxed cystacanths of polymorphid acanthocephalans collected from notothenioid fishes in the Beagle Channel (Magellanic subregion of sub-Antarctica) is described. A parasite of birds, Andracantha baylisi (Zdzitowiecki, 1986), was found in Patagonotothen longipes and Champsocephalus esox. It has: a proboscis 0.

New morphological data on the acanthocephalan Hypoechinorhynchus magellanicus Szidat, 1950 (Palaeacanthocephala: Arhythmacanthidae).

Hypoechinorhynchus magellanicus Szidat, 1950 (Acanthocephala: Arhythmacanthidae) is redescribed based on specimens collected from a sub-Antarctic notothenioid fish, Champsocephalus esox (Günther). The host was caught in the Beagle Channel (Magellanic sub-region). H.

New morphological data on a sub-Antarctic acanthocephalan, Aspersentis johni (Baylis, 1929) (Palaeacanthocephala: Heteracanthocephalidae).

Aspersentis johni (Baylis, 1929) (Acanthocephala: Heteracanthocephalidae) is redescribed based on specimens collected from a sub-Antarctic nototheniid fish, Patagonotothen longipes. Hosts were caught in the Beagle Channel (Magellanic subregion). The redescription incorporates previously undescribed or poorly described features and complete measurements.