caa a22 4500 60622968X CHVBK 20210128101210.0 cr unu---uuuuu 210128e20150201xx s 000 0 eng 10.1007/s10695-014-0004-y doi (NATIONALLICENCE)springer-10.1007/s10695-014-0004-y Effects of temperature on specific dynamic action in Atlantic cod Gadus morhua [Elektronische Daten] [Bjørn Tirsgaard, Jon Svendsen, John Steffensen] Growth requires that energy is directed towards ingestion, digestion, absorption and assimilation of a meal; energy expenditures are often expressed as the specific dynamic action (SDA). While SDA is an important part of fish energy budgets and strongly affected by water temperature, temperature effects are not known across a wide temperature range in Atlantic cod Gadus morhua. The objective of this study was to examine effects of temperature (2, 5, 10, 15 or 20°C) on the energetic cost and time used for SDA in juvenile G. morhua by intermittent flow respirometry. At each temperature, G. morhua were fed a meal of herring (Clupea harengus) corresponding to 5% of the body mass. Standard metabolic rates measured pre-feeding and post-feeding metabolic rates were measured to determine SDA. The study showed that SDA coefficients (%, SDA energy divided by meal energy) were significantly lower at 2 and 10°C (5.4-6.3%) compared to 5, 15 and 20°C (10.4-12.4%), while SDA duration increased significantly from 80h at 10°C to 130-160h at 2, 15 and 20°C and reached a maximum of 250h at 5°C. The significant decrease in SDA duration at 10°C combined with a low SDA coefficient suggests that water temperatures close to 10°C may represent the optimum temperatures for SDA in this population of G. morhua. Our results suggest that SDA is not a simple function of temperature, but may vary with temperature in a more complex fashion. Springer Science+Business Media Dordrecht, 2014 Digestion nationallicence Gadus morhua nationallicence Metabolic rate nationallicence Respirometry nationallicence SDA nationallicence Temperature nationallicence Tirsgaard Bjørn Marine Biological Section, Biological Institute, University of Copenhagen, Strandpromenaden 5, 3000, Helsingør, Denmark aut Svendsen Jon Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Rua dos Bragas 289, 4050-123, Porto, Portugal aut Steffensen John Marine Biological Section, Biological Institute, University of Copenhagen, Strandpromenaden 5, 3000, Helsingør, Denmark aut Fish Physiology and Biochemistry Springer Netherlands 41/1(2015-02-01), 41-50 0920-1742 41:1<41 2015 41 10695 https://doi.org/10.1007/s10695-014-0004-y text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10695-014-0004-y text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Tirsgaard Bjørn Marine Biological Section, Biological Institute, University of Copenhagen, Strandpromenaden 5, 3000, Helsingør, Denmark aut NATIONALLICENCE 700 1- Svendsen Jon Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Rua dos Bragas 289, 4050-123, Porto, Portugal aut NATIONALLICENCE 700 1- Steffensen John Marine Biological Section, Biological Institute, University of Copenhagen, Strandpromenaden 5, 3000, Helsingør, Denmark aut NATIONALLICENCE 773 0- Fish Physiology and Biochemistry Springer Netherlands 41/1(2015-02-01), 41-50 0920-1742 41:1<41 2015 41 10695