260 
Fishery Bulletin 109(3) 
cephalus in Australian estuaries. J. Appl. Ichthyol. 
9:210-221. 
Laurenson, L. J. B., I. C. Potter, and N. G. Hall. 
1994. Comparisons between generalized growth curves 
for two estuarine populations of the eel tailed catfish 
Cnidoglanis macrocephalus. Fish. Bull. 92:880-889. 
Law, R., and D. R. Grey. 
1989. Evolution of yields from populations with age- 
specific cropping. Evol. Ecol. 3:343-359. 
Marshall, C. T., and H. I. Browman. 
2007. Introduction: Disentangling the causes of matura- 
tion trends in exploited fish populations. Mar. Ecol. 
Prog. Ser. 335:249-251. 
Melvin, G. D., and R. L. Stephenson. 
2007. The dynamics of a recovering fish stock: Georges 
Bank herring. ICES J. Mar. Sci. 64:69-82. 
Morita, K., and M. Fukuwaka. 
2007. Why age and size at maturity have changed in 
Pacific salmon. Mar. Ecol. Prog. Ser. 335:289-294. 
Neuheimer, A. B., and C. T. Taggart. 
2007. The growing degree-day and fish size-at-age: the 
overlooked metric. Can. J. Fish. Aquat. Sci. 64:375-385. 
2010. Can changes in length-at-age and maturation 
timing in Scotian Shelf haddock ( Melanogrammus aegle- 
finus) be explained by fishing? Can. J. Fish. Aquat. 
Sci. 67:854-865. 
Olsen, E. M., M. Heino, G. R. Lilly, M. J. Morgan, J. Brattey, 
B. Ernande, and U. Dieckmann. 
2004. Maturation trends indicative of rapid evolu- 
tion preceded the collapse of northern cod. Nature 
428:932-935. 
Olsen, E. M., G. R. Lilly, M. Heino, M. J. Morgan, J. Brattey, and 
U. Dieckmann. 
2005. Assessing changes in age and size at maturation in 
collapsing populations of Atlantic cod ( Gadus morhua). 
Can. J. Fish. Aquat. Sci. 62:811-823. 
R Development Core Team. 
2008. R: A language and environment for statistical 
computing. R Foundation for Statistical Computing, 
Vienna, Austria. ISBN 3-900051-07-0, URL http:// 
www.R-project.org. 
Reznick, D. N., and C. K. Ghalambor. 
2005. Can commercial fishing cause evolution? Answers 
from guppies ( Poecilia reticulata). Can. J. Fish. Aquat. 
Sci. 62:791-801. 
Stearns, S. C., and J. C. Koella. 
1986. The evolution of phenotypic plasticity in life-history 
traits: predictions of reaction norms for age and size at 
maturity. Evolution 40:893-913. 
Swain, D. P., A. F. Sinclair, and J. M. Hanson. 
2007. Evolutionary response to size-selective mortality 
in an exploited fish population. Proc. R. Soc. Lond. B. 
Biol. Sci. 274:1015-1022. 
Trippel, E. A. 
1995. Age at maturity as a stress indicator in fisher- 
ies. BioScience 45:759-771. 
Venturelli, P. A., N. P. Lester, T. R. Marshall, and B. J. Shuter 
2010. Consistent patterns of maturity and density- 
dependent growth among populations of walleye 
(Sander vitreus ): application of the growing degree- 
day metric. Can. J. Fish. Aquat. Sci. 67:1057- 
1067. 
