Anthropological Institute and Museum, University of Zürich-Irchel, Winterthurerstrasse 190, CH-8057 Zürich, Switzerland.
Curr Biol. 2013 Jan 21;23(2):R63-5. doi: 10.1016/j.cub.2012.11.042.
An artificial selection experiment demonstrates that large-brained guppies learn better, but produce less offspring and have smaller guts. A close link between brain size and fertility suggests that energetic trade-offs play an important role in brain size evolution.
一项人工选择实验表明，大脑较大的孔雀鱼学习能力更强，但繁殖的后代较少，内脏也更小。大脑大小与繁殖力之间的紧密联系表明，能量权衡在大脑大小的进化中起着重要作用。
