Pagès-Feuillade E
URA 136/CNRS, Laboratoire d'Ecologie Générale, Muséum National d'Histoire Naturelle, Brunoy, France.
Folia Primatol (Basel). 1988;50(3-4):204-20. doi: 10.1159/000156346.
Five male and four female grey lesser mouse lemurs, Microcebus murinus, were trapped with Sherman traps in the Forestry Reserve of Ampijoroa, near Majunga, N.W.-Madagascar and equipped with individual radio-transmitters with a range of 220-300 m. These 9 individuals were then followed and observed (alternatively or simultaneously) for a total of 30 nights spread over a period of 6 weeks (26 September to 11 November 1985). In this dry deciduous forest zone, the subpopulation of 9 M. murinus observed occupied a total area of 7 ha. The home ranges of 4 males were significantly larger than those of 4 females (means: 3.2 +/- 0.2 and 1.8 +/- 0.1 ha, respectively). Nevertheless, because of the larger degree of overlap between home ranges of males, the available mean area per individual did not differ greatly between the sexes (a total of 5.5 ha for 4 males, with 65% overlap, versus a total of 4.2 ha for 4 females, with only 44% overlap). Overlapping of all nine home ranges produced a 'common zone' in the centre of the study area, where meetings between animals of either sex took place. This pattern can be interpreted as representing a pregregarious form of social structure. During nocturnal activity, the animals foraged individually, though an average of 11% of time was spent less than 10 m away from a conspecific. The tendency for dispersion of individuals was most pronounced during foraging for insects, when travel speeds were also relatively high. The most obvious social interactions occurred when females were on their way back to a common nest, calling and following each other. Such behaviour was not exhibited by males, even by those that shared a nest. Away from the nest, physical contacts were rare and brief. During the few days preceding oestrus, females were approached by several males, without agonistic interactions between males being observed at this period. Most observed agonistic interactions were initiated by females and directed against males.
五只雄性和四只雌性灰小鼠狐猴（Microcebus murinus）在马达加斯加西北部马任加附近的安皮乔罗阿森林保护区被谢尔曼陷阱捕获，并配备了有效范围为220 - 300米的个体无线电发射器。随后，对这9只个体进行了跟踪观察（交替或同时进行），总共观察了30个夜晚，时间跨度为6周（1985年9月26日至11月11日）。在这个干燥落叶林地区，观察到的9只小鼠狐猴亚种群占据的总面积为7公顷。4只雄性的家域明显大于4只雌性（平均值分别为：3.2±0.2公顷和1.8±0.1公顷）。然而，由于雄性家域之间的重叠程度更大，两性之间每个个体的可用平均面积差异不大（4只雄性总计5.5公顷，重叠率为65%；4只雌性总计4.2公顷，重叠率仅为44%）。所有九个家域的重叠在研究区域中心形成了一个“公共区域”，不同性别的动物会在那里相遇。这种模式可以解释为代表了一种群居前的社会结构形式。在夜间活动期间，动物们单独觅食，不过平均有11%的时间是在距离同种个体不到10米的范围内度过的。个体分散的趋势在捕食昆虫时最为明显，此时移动速度也相对较高。最明显的社会互动发生在雌性返回共同巢穴的途中，它们相互呼唤并跟随。雄性即使是共用一个巢穴的雄性也不会表现出这种行为。在巢穴之外，身体接触很少且很短暂。在发情期前的几天里，几只雄性会接近雌性，在此期间未观察到雄性之间的争斗互动。观察到的大多数争斗互动是由雌性发起并针对雄性的。
