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We conducted the first focused survey of nocturnal lemurs in the Mangabe reserve in order to assess their status within the reserve and provide recommendations for their conservation. We combined distance sampling and camera trapping to determine species occurrences and estimate their relative abundance within the reserve. The fieldwork was done in January to February 2018 in the northern and February to March 2019 in the southern part of the reserve. We surveyed 30 transects of one kilometer and each transect was visited three times. We installed eight camera traps; three in October 2017 and a further five were added in May 2018. Five species, Avahi laniger, Cheirogaleus major, Daubentonia madagascariensis, Microcebus lehilahytsara and Lepilemur mustelinus, were encountered and abundance differed between sites. D. madagascariensis and L. mustelinus are rare and should be prioritized for conservation actions in the future. The other lemur species including M. lehilahytsara, C. major and A. laniger can be used as key attractions for ecotourism within the reserve given their higher density. [ABSTRACT FROM AUTHOR] more...

Five nocturnal lemur species, including Avahi laniger, Daubentonia madagascariensis, Cheirogaleus major, Lepilemur mustelinus, and Microcebus lehilahytsara, which are all clas sified as threatened, are present within Mangabe Reserve. This study aims to understand their habitat use (ecology) and their behaviors. The habitat used (substrate size, forest cover, microhabitats, tree size according to the CBH and height of the animal above the ground) by lemurs was studied within a 100m2 plot where the animals were found along the transect (1000m). The animals' behavior were recorded during 30 minutes to an hour of animal survey. 58.6 % of A. laniger, M. lehilahytsara, C. major and L. mustelinus were frequently observed and living inside the forest. Their habitats vary according to the species: M. lehilahytsara frequents small supports, using a substrate between 0.5 to 5 meters above the ground (level 1); L. mustelinus prefer large and medium supports, occurring on level 2 substrate; C. major can be seen on large supports, approximating level 4 substrate and A. laniger use large supports on level 2 substrates. These species of nocturnal lemurs generally use all parts of the vegetative systems of the tree; the animal is found either inside or at the periphery of the tuft such that: A. laniger and L. mustelinus select the trunks at rest and during movement; C. major and M. lehilahytsara frequently localized on branches during food intake. Four types of behavior and reactions towards humans were marked during the study; their activities are: resting, moving, grooming and feeding. The duration of the common "rest" activity varies from 20 - 29 minutes for these four species. These lemurs have been placed in higher threat categories due to increased human pressure (Tavy) in the Protected Area. These assemblages are closely related to undisturbed forests, even those adapted to open areas, and the restoration of their forest habitats will be recommended for their survival. [ABSTRACT FROM AUTHOR] more...

Information on geographic distribution of Calumma Juliae in Madagascar, including information on locality, collector and verified by, is presented.