HERITABLE VARIATION FOR TERRITORIAL SUCCESS IN 2 DROSOPHILA-MELANOGASTER POPULATIONS
HERITABLE VARIATION FOR TERRITORIAL SUCCESS IN 2 DROSOPHILA-MELANOGASTER POPULATIONS
复制标题
DOI：
10.1016/s0003-3472(88)80077-0
复制
发表时间：
1988-08-01
期刊：
影响因子：
2.5
通讯作者：
HOFFMANN, AA
中科院分区：
文献类型：
--
作者：
HOFFMANN, AA
从两个地方的种群中人工选择雄性果蝇来防御入侵的雄性果蝇。这两个种群在几代内都表现出对选择的快速可复制反应，表明基础种群在领土成功方面存在相当大的遗传变异。线之间的交叉表明了方向性优势，以增加领土的成功，没有母系或父系的影响。与对照组相比，被选中的雄性相对更频繁地与领地居民发生冲突，并赢得相对更多的升级冲突。体重方面没有相关反应。在有领地存在的情况下，选择雄鼠与授精雌鼠的交配成功率高于对照雄鼠，但在交配速度上没有差异。通过允许果蝇在不同类型的资源存在的情况下交配，进行了领土成功的间接选择。在21-26代之后，资源分散、可以建立领地的笼子里的雄性比资源单一的笼子里的雄性更成功。这种对资源类型的遗传差异与领地雄性在领地成功和交配成功方面的遗传差异是一致的。
Male fruitflies from stocks from two localities were artificially selected for defence of a food area against intruding males. Both stocks showed a rapid replicable response to selection over a few generations, indicating considerable genetic variation for territorial success in the base populations. Crosses between lines indicate directional dominance for increased territorial success and no maternal or paternal effects. Selected males escalated relatively more frequently against territory residents than control males, and won relatively more escalated encounters. There was no correlated response in body weight. In the presence of territories, selected males had a higher mating success with inseminated females than control males but did not differ in mating speed. Indirect selection for territorial success was carried out by allowing flies to mate in the presence of different types of resources. After 21-26 generations, males from lines held in cages with discrete resources where territories could be established had greater territorial success than males from lines held in cages with one large resource. This genetic divergence in response to resource type is consistent with the heritable variation in territoral success and mating success of territorial males.