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Abstract

In pelagic catches of the Polish BIOMASS III Expedition 24 fish species belonging to 6 families were encountered. Pleuragramma antarcticum, Electrona antarctica and Protomyctophum bolini dominated in the Bransfield Strait. Pagothenia brachysoma was abundant in the region of Elephant Island. The presence of juvenile Channichthyidae was recorded in this area only in January. In comparison with observations in other seasons an increased frequency of Chaenodraco wilsoni and decreased frequency of Chaenocephalus aceratus was noted.
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Abstract

24 species of 8 fish families were found to occur on the shelf of Elephant Island during austral spring and summer of 1986/87 season. Notothenia gibberifrons was a predominant species (78—83% per catch). The presence of Champsocephalus gunnari and Chaenocephalus aceratus (15—20% per catch) almost completed fish composition profile. A pronounced decrease of Notothenia rossi (0.03—0.04% per catch) was noticed. Some specimens of Champsocephalus gunnari were characterized by a spawning-time shifted by almost half a year comparing to the remaining part of its population.
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Abstract

In the region between King George Island and the South Orkney Islands 7 fish species from 6 families were found. The concentration of larvae at the edge of drifting ice was higher (2.55 ind. x 1000 m-3) than in the stations situated at a distance from the ice edge (0.93 ind. x 1000 m-3).
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