Pojavlenie Galba truncatula (O. F. Muller, 1774) na territorii Pol'skikh Vysokikh Tatr

The examined terrritory permits to distinguish 3 positions: populated, unpopulated, but likely to be populated, and unpopulated but hardly probable to be populated by Galba truncatula. The highest place showing the presence of the snail was at 1325 m. over the sea level

Occurrence of digenea in fishes of the family Bathydraconidae in the Weddell Sea and other areas of Antarctica

AbstractFour digenean species, Stenakron glacialis, Lepidapedon garrardi, Steringophorus arntzi and Otodistomum cestoides (metacercariae) were recorded in three of four bathydraconid species (59 specimens) examined in the Weddell Sea. The only previously reported species, Elytrophalloides oatesi, was found there only in other hosts. The total number of digenean species known as occurring in Bathydraconidae in Antarctica increased to 13. They were recorded in eight of ten host species examined. However, only a few specimens of most of bathydraconid species were investigated. Most of digenean species are more abundant in other fishes, especially in Nototheniidae and Channichthyidae. S. arntzi and S. glacialis normally occur in Bathydraco marri and Racovitzia glacialis respectively, but they were occasionally found also in Artedidraconidae; the latter was reported also from a liparidid. Intensities of infections are usually low, except in three large predatory species, Parachaenichthys charcoti, P. georgianus and Cygnodraco mawsoni, which can be parasitized by about 100 or more digeneans in some single hosts

Digenetic trematodes in alimentary tracts of fishes of South Georgia and South Shetlands (Antarctica)

Digenetic trematodes were found in 30 fish individuals out of 46 examined from catches obtained off South Shetlands, while off South Georgia all 16 individuals examined were found to contain the parasites. The same 7 parasitic species were found in the two areas, Elytrophalloides oatesi (Leiper et Atkinson, 1914) prevailing off South Georgia and Plagioporus pennelli (Leiper et Atkinson, 1914) and Genolinea bowersi (Leiper et Atkinson, 1914) off South Shetlands. The remaining species included: Lecithaster australis Prudhoe et Bray, 1973; Gonocerca phycidis Manter, 1925; Lepidapedon antarcticus Byrd, 1963; and Neolebouria georgiensis Gibson, 1976. The descriptions of L. antarcticus, L. australis and G. bowersi are given along with a number of supplementary remarks concerning morphology of the remaining species found

Occurrence of digenea in fishes other than Notothenioidei in the Weddell Sea and the whole Antarctica

AbstractIn total, 60 fish specimens belonging to four families, Zoarcidae (19 specimens of three species), Liparididae (14 specimensof two species), Macrouridae (23 specimens of one species) and Rajidae (four specimens of two species), caught in the WeddellSea were examined. A zoarcid, Lycodichthys dearborni, and both Rajidae, Bathyraja maccaini and Bathyraja sp., were notinfected. Macrourus whitsoni was the most strongly infected (six digenean species found, prevalence 91.3%, mean abundance10.13). Two zoarcids, Ophthalmolycus amberensis and O. bothriocephalus, were infected with Macvicaria longibursata; theformer also with Aphanurus sp., Paraliparis antarcticus and P. trilobodon were infected with Steringophorus liparidis andNeolebouria terranovaensis, and Derogenes johnstoni, respectively. The check list of Digenea recorded in Antarctica in non-notothenioid fishes is given. Infected fishes belong to six families, Zoarcidae (7 digenean species found), Macrouridae (8),Muraenolepididae (9), Liparididae (5), Bathylagidae (one) and Rajidae (one). In total, 29 digenean species were found, of which12 are common for Notothenioidei and other fishes, whereas 17 species are specific for non-notothenioid definitive hosts.Digenea belong to four higher taxa, Opecoelidae (10 species), Lepocreadiidae (10), Fellodistomidae (one) and Hemiuroidea (8)

Pojavlenie Galba truncatula (O. F. Muller, 1774) na territorii Pol'skikh Vysokikh Tatr

The examined terrritory permits to distinguish 3 positions: populated, unpopulated, but likely to be populated, and unpopulated but hardly probable to be populated by Galba truncatula. The highest place showing the presence of the snail was at 1325 m. over the sea level

On the occurrence of juvenile acanthocephalans of the genus Corynosoma Lühe, 1904 in fishes off South Georgia and south Shetland Islands (the Antarctic)

Juveniles of four acanthocephalan species were revealed in cysts found in abdominal cavities of 62 examined fish individuals representing l3 species. Corynosoma hamanii (Linstow, 1892) were found to be very common off South Shetlands as opposed to the waters near South Georgia were they occurred in low numbers. Descriptions of C. hamanni, C. bullosum (Linstow, 1892), and C. singularis Skryabin et Nikol′sky, 1971 are given. C. shackletoni Zdzitowiecki, 1978 were found in a fish, one adult individual being found in the intestine of a gull, Larus dominicanus

Dynamics of Eubrachiella antarctica (Quidor, 1906) (Copepoda) occurrence in Notothenia rossii marmorata (Fischer, 1885)

Dynamics of copepod Eubrachiella antarctica occurrence in Notothenia rossii marmorata in relation to the environmental conditions and to the total length of the fish was studied. Lack of the parasites in certain life periods of N. rossii marmorata and abundant occurrence in older fishes was stated