Abstract Investigation of home ranges, sex ratio and recruitment of the multimammate rat (Mastomys natalensis) in semi-arid areas of Tanzania was conducted in maize and fallow fields using the capture-mark-release (CMR) technique. The aim of this study was to generate useful data for the management of M. natalensis. The relative home range size of M. natalensis was significantly higher during the wet [544 m2 ± 25 standard error (SE)] than during the dry (447 m2 ± 18 SE) season, in males (521 m2 ± 23 SE) than in females (450 m2 ± 17 SE) and in adults (576 m2 ± 34 SE) than in juveniles (459 m2 ± 16 SE). However, there were no significant differences between habitats. Sex ratio was not significantly different (p = 0.44) between habitats. Recruitment was significantly higher (p = 0.000) in maize fields (mean = 0.43) than in fallow land (mean = 0.32) and differed significantly over time (p < 0.0001) with the highest recruitment recorded from April to July and the lowest from October to December. Management strategies should focus on managing rodents inhabiting maize fields using methods that affect their recruitment in order to reduce the population increase of M. natalensis.

中文翻译：

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坦桑尼亚半干旱地区多乳鼠（Mastomys natalensis）的栖息地、性别比例和募集

摘要 使用捕获标记释放 (CMR) 技术在玉米和休耕地对坦桑尼亚半干旱地区多乳鼠 (Mastomys natalensis) 的栖息地、性别比和募集进行了调查。本研究的目的是为 M. natalensis 的管理产生有用的数据。M. natalensis 的相对栖息地大小在湿季 [544 m2 ± 25 标准误差 (SE)] 显着高于旱季 (447 m2 ± 18 SE)，雄性 (521 m2 ± 23 SE) 比在雌性 (450 m2 ± 17 SE) 和成鱼 (576 m2 ± 34 SE) 比幼鱼 (459 m2 ± 16 SE) 多。然而，栖息地之间没有显着差异。栖息地之间的性别比没有显着差异（p = 0.44）。玉米地（平均值 = 0.43）的补充量（p = 0.000）明显高于休耕地（平均值 = 0. 32) 并且随着时间的推移显着不同 (p < 0.0001)，最高招募记录在 4 月到 7 月，最低从 10 月到 12 月。管理策略应侧重于使用影响其招募的方法来管理居住在玉米田中的啮齿动物，以减少 M. natalensis 的种群增长。