General Classification of Maturation Reaction-Norm Shape from Size-based Processes
- 99 Downloads
Phenotypic plasticity of size at maturation is commonly described using size–age maturation reaction norms (MRNs). MRNs for age and size at maturation are analyzed and classified into three general categories related to different size scalings of growth and mortality. The underlying model for growth and mortality is based on processes at the level of the individual, and is motivated by the energy budget of fish. MRN shape is a balance between opposing factors and depends on subtle details of size dependence of growth and mortality. MRNs with both positive and negative slopes are predicted, and for certain mortality conditions also a lower critical spawning mass. The model is applied to predict a generic fishery-induced evolutionary response and allows assessment of climate change impact on MRNs. Our work stresses the importance of using realistic size dependence of mortality and growth, since this strongly influences the predicted MRNs and sensitivity to harvest pressure.
KeywordsOptimal life-history theory Growth Mortality Fisheries induced evolution Climate change impact
Unable to display preview. Download preview PDF.
- Chambers, R. C. (1997). Environmental influences on egg and propagule sizes in marine fishes. In Chambers, R. C., & Trippel, E. A. (Eds.), Early life history and recruitment in fish populations (pp. 63–102). London: Chapman & Hall. Google Scholar
- Heino, M., & Dieckmann, U. (2008). Detecting fisheries-induced life-history evolution: An overview of the reaction-norm approach. Bull. Mar. Sci., 83(1), 69–93. Google Scholar
- Heino, M., Dieckmann, U., & Godø, O. (2002). Measuring probabilistic reaction norms for age and size at maturation. Evolution, 56(4), 669–678. Google Scholar
- Jobling, M. (1994). Fish and fisheries series : Vol. 13. Fish bioenergetics. London: Chapman & Hall. Google Scholar
- Jørgensen, C., Enberg, K., Dunlop, E. S., Arlinghaus, R., Boukal, D. S., Brander, K., Ernande, B., Gaerdmark, A., Johnston, F., Matsumura, S., Pardoe, H., Raab, K., Silva, A., Vainikka, A., Dieckmann, U., Heino, M., & Rijnsdorp, A. D. (2007). Ecology—managing evolving fish stocks. Science, 318(5854), 1247–1248. doi: 10.1126/science.1148089. CrossRefGoogle Scholar
- Peters, R. (1983). The ecological implications of body size. Cambridge: Cambridge University Press. Google Scholar
- Reiss, M. J. (1991). The allometry of growth and reproduction. Cambridge: Cambridge University Press. Google Scholar
- Vinberg, G. G. (1956). Rate of metabolism and food requirements of fishes. Fish. Res. Board Can., 194, 1–253. Google Scholar