caa a22 4500 465763332 CHVBK 20180323111905.0 cr unu---uuuuu 170327e19901201xx s 000 0 eng 10.1007/BF00236523 doi (NATIONALLICENCE)springer-10.1007/BF00236523 Seasonal aspects of the biology and diet of nearshore nototheniid fish at Potter Cove, South Shetland Islands, Antarctica [Elektronische Daten] [R. Casaux, A. Mazzotta, E. Barrera-Oro] Summary: Approximately 1000 specimens belonging to eight fish species were collected at Potter Cove, King George Island, South Shetland Islands, from August 1985 to May 1986. This study deals with the dominant species Notothenia neglecta, Notothenia gibberifrons, Trematomus newnesi and Notothenia rossii marmorata. Age and size structure of the fish were analyzed using scale and otolith readings. Notothenia neglecta was the most abundant species. It spawns in the austral autumn. Juvenile N. rossii marmorata migrate offshore when sexually mature. Over eight hundred stomach contents were analyzed. The four species studied were generally benthophagous. However, in summer T. newnesi and N. rossii marmorata, carried out vertical migrations, feeding on pelagic organisms. Gammarid amphipods constituted the main food in all four species. Algae were consumed regularly throughout the year and we suggest that they are intentially eaten by the fish, rather than by accident. Two 48 hour sampling periods, carried out in summer of 1987, showed that N. neglecta was more active during the day. Springer-Verlag, 1990 Casaux R. División Biología, Instituto Antártico Argentino, Cerrito 1248, 1010, Buenos Aires, República Argentina aut Mazzotta A. División Biología, Instituto Antártico Argentino, Cerrito 1248, 1010, Buenos Aires, República Argentina aut Barrera-Oro E. División Biología, Instituto Antártico Argentino, Cerrito 1248, 1010, Buenos Aires, República Argentina aut Polar Biology Springer-Verlag 11/1(1990-12-01), 63-72 0722-4060 11:1<63 1990 11 300 https://doi.org/10.1007/BF00236523 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00236523 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Casaux R. División Biología, Instituto Antártico Argentino, Cerrito 1248, 1010, Buenos Aires, República Argentina aut NATIONALLICENCE 700 1- Mazzotta A. División Biología, Instituto Antártico Argentino, Cerrito 1248, 1010, Buenos Aires, República Argentina aut NATIONALLICENCE 700 1- Barrera-Oro E. División Biología, Instituto Antártico Argentino, Cerrito 1248, 1010, Buenos Aires, República Argentina aut NATIONALLICENCE 773 0- Polar Biology Springer-Verlag 11/1(1990-12-01), 63-72 0722-4060 11:1<63 1990 11 300 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer