Genetic correlation between behavioural traits in relation to death-feigning behaviour
Genetic correlation between behavioural traits in relation to death-feigning behaviour
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DOI：
10.1007/s10144-009-0188-7
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发表时间：
2010-04-01
影响因子：
1.7
通讯作者：
Miyatake, Takahisa
中科院分区：
文献类型：
--
作者：
Nakayama, Satoshi;Nishi, Yusuke;Miyatake, Takahisa
个人在不同时间或不同情况下的行为经常是一致的。我们研究了重复性的持续时间的假死的反捕食行为时，攻击，然后进行人工选择的持续时间，计算其遗传力和检查相关的活动水平的选择反应，在混乱的面粉甲虫，Tribolium confusum。经17代以上的人工选择，建立了两个菌株的3个重复，S菌株表现出较短的假死持续时间和较低的假死频率，而L菌株表现出较长的假死持续时间和较高的假死频率。假死持续时间对选择有明显的响应，两个品系的所有重复的实现遗传力均达到显著水平。在一个恒定的时间内检查的自发活动水平表明，S株有较高的自发活动水平比L株。未观察到性别之间的显著差异。因此，我们的研究表明，假死的遗传力和假死的强度和活动水平之间存在负遗传相关。
Individuals frequently behave in a consistent manner across time or in different situations. We examined the repeatability of duration of death-feigning anti-predator behaviour when attacked, and then carried out artificial selection for duration to calculate its heritability and examine correlated responses to selection in activity levels, in the confused flour beetle, Tribolium confusum. Three replicates of two strains were established by artificial selection for more than 17 generations: S strains exhibited shorter duration and lower frequency of death feigning while L strains exhibited longer duration and higher frequency of death feigning. Duration of death feigning clearly responded to selection, and significant value of realized heritability was detected in all replicates of the two strains. Examination of locomotor activity levels over a constant period showed that S strains had higher locomotor activity levels than L strains. No significant differences between the sexes were observed. Our study thus demonstrates heritability of death feigning and the existence of a negative genetic correlation between intensity of death feigning and activity level.