This dataset provides the estimated birth location, sex, assigned parents, and estimated birth and death dates of 920 gray-sided voles (Myodes rufocanus) born in a 3-ha outdoor enclosure in Sapporo, Japan between September 1992 and May 1994, as well as capture–recapture data for 30 trapping sessions. We introduced 22 males and 25 females from several natural populations into the enclosure in late September 1992. Individuals in the enclosure were captured using live traps every 2 weeks until late April 1994, except for periods with deep snow cover. The location, body weight, and reproductive status of each vole were monitored throughout the study period. Complementary trapping was performed within the home ranges of breeding females to mark juveniles as early as possible. Upon first capture, each individual was marked by toe clipping for subsequent identification, and the clipped toes were used as DNA samples. For each individual, candidate parents were selected based on female reproduction history and capture points. Parentage then was determined using genotypes at 3–5 microsatellite loci with the CERVUS program. The results show that individuals born in the enclosure (N = 920) were derived from 215 litters, among which multiple males sired 51 litters. We used this database to elucidate the promiscuous mating system and inbreeding-avoidance mechanism of the gray-sided vole and to develop a new method for estimating the frequency of multiple-male mating. This dataset will contribute to future behavioral ecological research on this and other small mammal species. The complete data set for this abstract published in the Data Article section of the journal is available in electronic format in MetaCat in JaLTER at http://db.cger.nies.go.jp/JaLTER/metacat/metacat/ERDP-2023-03.1/jalter-en.

中文翻译：

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1992 年 9 月至 1994 年 5 月期间出生在 3 公顷室外围栏内的 920 只灰边田鼠 (Myodes rufocanus) 的亲代

该数据集还提供了 1992 年 9 月至 1994 年 5 月期间出生在日本札幌 3 公顷室外围栏中的 920 只灰边田鼠 ( Myodes rufocanus ) 的估计出生地点、性别、指定父母以及估计出生和死亡日期。作为 30 个捕获会话的捕获-重新捕获数据。1992 年 9 月下旬，我们将来自几个自然种群的 22 只雄性和 25 只雌性引入围栏。直到 1994 年 4 月下旬，每两周使用活体陷阱捕获围栏中的个体，除了积雪较深的时期。在整个研究期间监测每只田鼠的位置、体重和繁殖状态。在繁殖雌性的家庭范围内进行补充诱捕，以尽早标记幼体。第一次捕获时，每个个体都会被剪掉脚趾进行标记，以供后续识别，剪下的脚趾将用作 DNA 样本。对于每个个体，候选父母是根据雌性繁殖历史和捕获点选择的。然后通过 CERVUS 程序使用 3-5 个微卫星位点的基因型来确定亲子关系。结果表明，圈养个体（N  = 920）产自215窝，其中多只雄性繁殖了51窝。我们利用该数据库阐明了灰侧田鼠的混交交配系统和近交避免机制，并开发了一种估计多雄性交配频率的新方法。该数据集将有助于未来对该物种和其他小型哺乳动物物种的行为生态学研究。发表在期刊数据文章部分的该摘要的完整数据集可在 JaLTER 中的 MetaCat 中以电子格式获取：http://db.cger.nies.go.jp/JaLTER/metacat/metacat/ERDP-2023- 03.1/jalter-en。