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1

Changes in the blackfin icefish stock structure [Chaenocephalus aceratus [Lonnberg, 1906], Pisces, Notothenioidei, Channichthyidae] off South Georgia within 1975-1992

100%
Kompowski A.
Acta Ichthyologica et Piscatoria
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1994
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tom 24
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nr 2
53-60
The paper demonstrates results of the stock monitoring of blackfin icefish in the region of South Georgia in the period of 1988/89-1991/92 as well as summarises seventeen-year period ofobservatio (1976/77 -1991/92). The influence of fishing on stock strucrture and supposed reasons of Quctuation ofyear-classes number are discussed.
2

Fish distribution on the shelves of the Atlantic Ocean Antarctic Area with respect to stock density

100%
Sosinski J., Trella K.
Bulletin of the Sea Fisheries Institute
|
2001
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nr 1
3

The osteology and ossification variability of the skull of Antarctic white-blooded fish Chaenodraco wilsoni Regan, 1914 [Channichthyidae, Notothenioidei]

100%
Zabrowski M.
Acta Ichthyologica et Piscatoria
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2000
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tom 30
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nr 2
A detailed osteological analysis of the skull of an Antarctic fish, Chaenodraco wilsoni Regan, 1914 (Channichthyidae, Notothenioidei) was done, focusing on the bone structure and osteological variability. A notable reduction of the ossification was observed, which took place in several ways: replacement of the whole bone with cartilage, only superficial ossification (e.g. in the ethmoid region), separation of the bones by wide cartilage areas (e.g. in the brain case), and reduction of bone dimensions. An extreme case was complete loss of the opisthootic-the first record of this kind within this family of fishes. The reduction of ossification in Ch. wilsoni resulted in high osteological variability that was observed in the case of reduced bones. Instances of asymmetry of paired elements of the skeleton were observed as well.
4
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Leeches [Hirudinida: Piscicolidae] - parasites of Antarctic fish from Channichthyidae family

80%
Bielecki A., Rokicka M., Ropelewska E., Dziekonska-Rynko J.
Wiadomości Parazytologiczne
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2008
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tom 54
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nr 4
345-348
5

Occurrence of Digenea in fishes of the family Artedidraconidae in the Weddell Sea and other areas of Antarctica

80%
Zdzitowiecki K.
Acta Parasitologica
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2002
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tom 47
|
nr 4
Six of seven fish species of Artedidraconidae caught in the Weddell Sea were infected with Digenea. Prevalence of infection was relatively high, 18-71%, but intensities were very low, never exceeding four digeneans. In all, 10 digenean species were found: Macvicaria microtestis, Stenakron glacialis, Lepidapedon garrardi, Neolepidapedon trematomi, Steringophorus arntzi, Genolinea bowersi, Derogenes johnstoni, Elytrophalloides oatesi, Glomericirrus macrouri, and Otodistomum cestoides (metacercaria). None of these species was specific for Artedidraconidae. According to literature data, the total number of digeneans of Artedidraconidae is 14 species, of which 12 have been identified, including the 10 listed above, Neolebouria terranovaensis and Lecithaster macrocotyle; two (possibly specific for Artedidraconidae) are undetermined yet. The low diversity of digenean species in areas other than the Weddell Sea (three species in each of three areas) is probably the result of limited data available so far. Knowledge of the digenean fauna of Artedidraconidae is much less complete than that of three other notothenioid families, Nototheniidae, Channichthyidae and Bathydraconidae.
6

Occurrence of Digenea in fishes of the family Channichthyidae in the Weddell Sea and other sub-continental areas of the Antarctica

80%
Zdzitowiecki K.
Acta Parasitologica
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2002
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tom 47
|
nr 2
As a result of the examination in the Weddell Sea of 59 channichthyid fishes belonging to six species, only three fish specimens of two species, Chionodraco hamatus (one of 20) and Cryodraco antarcticus (two of seven), were found to be infected with Digenea. Three digenean species, Macvicaria georgiana, Derogenes johnstoni and Glomericirrus macrouri, were recognized. The infection was extremely low - one or two parasites in each infected fish. All these digenean species are more abundant in the Weddell Sea in other fishes. Results were compared with literature data for three other Antarctic areas, the environs of Adelie Land, the South Shetland Islands and the Ross Sea (off Terra Nova Bay). Channichthyidae are much more highly infected in these areas and with higher diversity of parasites - in total 12 species. The low infection of channichthyids in the Weddell Sea is probably associated with the presence of shelf glaciers (instead of a sub-coastal environment) and the feeding of these fishes mainly on pelagic organisms. No one digenean species is specific for Channichthyidae, but in areas others than the Weddell Sea Channichthyidae are important hosts of eight digenean species.
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