Jolly A, Gustafson H, Oliver W L, O'Connor S M
Folia Primatol (Basel). 1982;39(1-2):124-44. doi: 10.1159/000156071.
Propithecus verreauxi have been repeatedly censused in parts of the 200-ha reserve at Berenty between 1963 and 1975. Troop rearrangements in 1963 and 1975 showed that both males and females can change troop outside the breeding season. Group sex ratio varies from 0.3 female/male to 5.0 female/male. Usually, at Berenty, groups defend highly exclusive territories, in contrast to ranging patterns elsewhere. In 1980 troops were censused during 2 weeks in November at a different season from earlier studies. They had larger troop feeding dispersion than before, and pairs and triplets of males who travelled apart from bisexual troops. This may be a season of mass male migration, as in Lemur catta, or else a long-term population change. This small reserve should be carefully monitored as its lemurs have so far maintained relative population stability.
1963年至1975年间，白眉狐猴在贝伦蒂200公顷保护区的部分区域多次接受普查。1963年和1975年的群体重新排列表明，雄性和雌性在繁殖季节之外都可以更换群体。群体的性别比例从每雄性0.3雌性到每雄性5.0雌性不等。通常在贝伦蒂，群体保卫高度排他性的领地，这与其他地方的活动模式不同。1980年，在11月的两周内对群体进行了普查，这是一个与早期研究不同的季节。它们的群体觅食分散程度比以前更大，而且有雄性成对或三个一组与两性群体分开行动。这可能是一个大规模雄性迁移的季节，就像环尾狐猴那样，或者是一种长期的种群变化。这个小保护区应该受到仔细监测，因为到目前为止，其狐猴种群一直保持着相对稳定。
