Ågmo Anders, Snoeren Eelke M S
Department of Psychology, University of Tromsø, Tromsø, Troms, Norway.
PLoS One. 2015 Dec 3;10(12):e0144164. doi: 10.1371/journal.pone.0144164. eCollection 2015.
Both male and female rats produce 50 kHz ultrasonic vocalizations (USVs) in the presence of a sexual partner and during copulation. Previous studies showed that USVs have no incentive value for rats. In this study, we evaluated the role of USVs in behavior during copulation. Three groups of rats were used: sham males paired with sham females, devocalized females paired with sham males, and sham females paired with devocalized males. During the copulation test, the USVs emitted by the sham rat were recorded and the sexual behavior of both the male and the female were observed. The results revealed that devocalized and sham females showed similar patterns of sexual behavior and no difference was found in the copulatory behavior of devocalized and sham males. Also the behavior of the partner of a sham rat was comparable to the partner of a devocalized rat. In addition, almost no changes in USVs emission were found in the 5 seconds before and/or after a copulatory behavior. It can be concluded that USVs play no important role in rat copulatory behavior at least in sexually naïve rats.
雄性和雌性大鼠在有性伴侣在场时以及交配过程中都会发出50千赫兹的超声波发声（USV）。先前的研究表明，USV对大鼠没有激励价值。在本研究中，我们评估了USV在交配行为中的作用。使用了三组大鼠：假手术雄性大鼠与假手术雌性大鼠配对、去声大鼠与假手术雄性大鼠配对、假手术雌性大鼠与去声大鼠配对。在交配测试期间，记录假手术大鼠发出的USV，并观察雄性和雌性的性行为。结果显示，去声和假手术雌性大鼠表现出相似的性行为模式，去声和假手术雄性大鼠的交配行为没有差异。此外，假手术大鼠的伴侣的行为与去声大鼠的伴侣的行为相当。另外，在交配行为之前和/或之后的5秒内，几乎没有发现USV发射的变化。可以得出结论，至少在性成熟的大鼠中，USV在大鼠交配行为中不发挥重要作用。
Zotero 插件
