Wright Dominic, Rimmer Lucy B, Pritchard Victoria L, Krause Jens, Butlin Roger K
School of Biology, University of Leeds, Leeds, LS2 9JT, UK.
Naturwissenschaften. 2003 Aug;90(8):374-7. doi: 10.1007/s00114-003-0443-2. Epub 2003 Jul 22.
Population differences in anti-predator behaviour have been demonstrated in several species, although less is known about the genetic basis of these traits. To determine the extent of genetic differences in boldness (defined as exploration of a novel object) and shoaling within and between zebrafish (Danio rerio) populations, and to examine the genetic basis of shoaling behaviour in general, we carried out a study that involved laboratory-raised fish derived from four wild-caught populations. Controlling for differences in rearing environment, significant inter-population differences were found in boldness but not shoaling. A larger shoaling experiment was also performed using one of the populations as the basis of a North Carolina type II breeding design (174 fish in total) to estimate heritability of shoaling tendency. A narrow-sense heritability estimate of 0.40 was obtained, with no apparent dominance effects.
在几个物种中已经证明了反捕食行为的种群差异，尽管对于这些特征的遗传基础了解较少。为了确定斑马鱼（Danio rerio）种群内部和种群之间在胆量（定义为对新物体的探索）和集群行为方面的遗传差异程度，并总体上研究集群行为的遗传基础，我们进行了一项研究，该研究涉及来自四个野生捕获种群的实验室饲养的鱼。控制饲养环境的差异后，发现胆量存在显著的种群间差异，但集群行为没有。还使用其中一个种群作为北卡罗来纳州II型育种设计（总共174条鱼）的基础进行了一个更大规模的集群实验，以估计集群倾向的遗传力。获得了狭义遗传力估计值为0.40，没有明显的显性效应。
