Floody Owen R
Department of Psychology, Bucknell University, Lewisburg, PA 17837, USA.
J Comp Psychol. 2011 May;125(2):185-93. doi: 10.1037/a0022660.
Factor analysis was applied to standard measures of sexual behavior in 73 male hamsters (Mesocricetus auratus) as they interacted with hormone-primed females. The results suggest that 5 factors, or conceptual mechanisms, function in the organization of the behaviors observed in the first 2 copulatory series. Of these, the 3 that relate to the behaviors in the first copulatory series were compared to those emerging from prior analyses of other rodents. These comparisons revealed similarities and differences in factor structure across species. Whereas all of these analyses identify factors related to the initiation and efficiency of copulatory behavior, hamsters seem to differ from other species in the measures that best define these factors. In addition, the copulatory rate factor that has been prominent in previous analyses of rats seems to be absent in hamsters. These results suggest that male sexual behavior in hamsters is organized differently from that in other rodents. In more general terms, they suggest that even species with generally similar copulatory patterns can show significant differences in behavioral organization, in turn suggesting the need for additional factor analytic studies to better establish the extent of these species differences.
在73只雄性仓鼠（金黄地鼠）与经激素处理的雌性交配互动时，对其性行为的标准测量指标进行了因子分析。结果表明，在前两个交配序列中观察到的行为组织涉及5个因子或概念机制。其中，将与第一个交配序列中的行为相关的3个因子，与先前对其他啮齿动物分析得出的因子进行了比较。这些比较揭示了不同物种间因子结构的异同。尽管所有这些分析都确定了与交配行为的启动和效率相关的因子，但仓鼠在最能定义这些因子的测量指标上似乎与其他物种不同。此外，先前对大鼠的分析中突出的交配率因子在仓鼠中似乎不存在。这些结果表明，仓鼠的雄性性行为组织方式与其他啮齿动物不同。更一般地说，它们表明即使具有大致相似交配模式的物种，在行为组织上也可能存在显著差异，这反过来表明需要进行更多的因子分析研究，以更好地确定这些物种差异的程度。
