caa a22 4500 465763324 CHVBK 20180323111905.0 cr unu---uuuuu 170327e19901201xx s 000 0 eng 10.1007/BF00236516 doi (NATIONALLICENCE)springer-10.1007/BF00236516 Kunzmann A. Institut für Polarökologie der Universität Kiel, Olshausenstrasse 40, D-2300, Kiel 1, Germany aut Gill morphometrics of two Antarctic fish species Pleuragramma antarcticum and Notothenia gibberifrons [Elektronische Daten] [A. Kunzmann] Summary: Gill dimensions of 27 juvenile and adult Pleuragramma antarcticum from the southern Weddell Sea and of 28 juvenile and adult Notothenia gibberifrons from the South Orkney and South Shetland Islands were estimated. The unit gill area (UGA) of P. antarcticum ranged from 75 to 167 mm2/g (mean=105); gill area index (GAI) and water-blood distance (WBD) were found to be 1.38 cm2 and 3.3 μm, respectively. The exponent dg in the relationship total gill area to weight was found to be 0.90. It is concluded that P. antarcticum belongs to sluggish species and, although pelagic, its routine energy costs tend to be low. However, the closely packed lamellae (NL/mm=21) indicate more active behaviour in comparison with N. gibberifrons. A preliminary estimation of growth parameters (P, k) is presented. The sluggish behaviour of N. gibberifrons, as expected from its benthic mode of life, is reflected by the gill parameters: the very low UGA ranged from 39 to 118 mm2/g; GAI and dg were found to be 0.73 cm2 and 0.98, respectively. Comparing gill dimensions and general respiration characteristics of fish from antarctic, temperate and tropical waters it is concluded that antarctic fish have increased their scope for activity. Springer-Verlag, 1990 Polar Biology Springer-Verlag 11/1(1990-12-01), 9-18 0722-4060 11:1<9 1990 11 300 https://doi.org/10.1007/BF00236516 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00236516 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Kunzmann A. Institut für Polarökologie der Universität Kiel, Olshausenstrasse 40, D-2300, Kiel 1, Germany aut NATIONALLICENCE 773 0- Polar Biology Springer-Verlag 11/1(1990-12-01), 9-18 0722-4060 11:1<9 1990 11 300 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer