Present address: Florida Atlantic University, Department of Biological Sciences, 777 Glades Road, SC 214, Boca Raton, Florida −33431, USA.
Growth efficiency and temperature in scallops: a comparative analysis of species adapted to different temperatures
Article first published online: 21 SEP 2004
Volume 18, Issue 5, pages 641–647, October 2004
How to Cite
HEILMAYER, O., BREY, T. and PÖRTNER, H. O. (2004), Growth efficiency and temperature in scallops: a comparative analysis of species adapted to different temperatures. Functional Ecology, 18: 641–647. doi: 10.1111/j.0269-8463.2004.00905.x
- Issue published online: 21 SEP 2004
- Article first published online: 21 SEP 2004
- Received 24 October 2003; revised 22 March 2004; accepted 1 June 2004
- Metabolic rates;
- overall growth performance;
- temperature adaptation
- 1Data were collected on metabolic activity and growth in pectinid bivalves from published studies. The resulting database comprised three types of data sets: (i) synoptic data (13 populations, 7 species), where both individual growth performance and metabolism are known, (ii) ‘metabolism only’ data (82 populations, 13 species), and (iii) ‘growth only’ data (198 populations, 26 species).
- 2In pectinid bivalves belonging to different species and living under different environmental conditions metabolic activity (standard metabolic rate, SMRAvg, Q10 = 2·97) is more closely related to temperature than individual growth (overall growth performance, OGP index P, Q10 = 1·12).
- 3The synthesis of the two corresponding Arrhenius equations shows that the relationship between the SMRAvg-to-OGP ratio and temperature follows the Arrhenius model, too, with Q10 = 2·26.
- 4SMRAvg-to-OGP is an inverse proxy for growth efficiency, hence growth efficiency decreases with rising temperature across a wide range of pectinid populations and species. Thus, there is strong empirical evidence that elevated temperature constrains growth efficiency in scallops and that adaptation does not fully compensate for this effect.