scholarly journals Olfactory predator recognition in the brown mouse lemur ( Microcebus rufus ) in Ranomafana National Park, Madagascar

2020 ◽  
Vol 82 (10) ◽  
Author(s):  
Anja M. Deppe ◽  
Geoff Kushnick
Keyword(s):  
National Park ◽  
Predator Recognition ◽  
Mouse Lemur ◽  
Ranomafana National Park ◽  
Microcebus Rufus

scholarly journals Sex-Segregated Range Use by Black-and-White Ruffed Lemurs (Varecia variegata) in Ranomafana National Park, Madagascar

2020 ◽  
pp. 1-33
Author(s):  
Andrea L. Baden ◽  
Jelisa Oliveras ◽  
Brian D. Gerber
Keyword(s):  
Home Range ◽  
National Park ◽  
Social Groups ◽  
Day Length ◽  
Ranomafana National Park ◽  
Home Range Overlap ◽  
Range Use ◽  
Black And White ◽  
Varecia Variegata ◽  
Range Overlap

Ranging behavior is one important strategy by which nonhuman primates obtain access to resources critical to their biological maintenance and reproductive success. As most primates live in permanent social groups, their members must balance the benefits of group living with the costs of intragroup competition for resources. However, some taxa live in more spatiotemporally flexible social groups, whose members modify patterns of association and range use as a method to mitigate these costs. Here, we describe the range use of one such taxon, the black-and-white ruffed lemur (<i>Varecia variegata</i>), at an undisturbed primary rain forest site in Ranomafana National Park, Madagascar, and characterize sex differences in annual home range area, overlap, and daily distances traveled. Moreover, we characterize seasonal variability in range use and ask whether ranging behaviors can be explained by either climatic or reproductive seasonality. We found that females used significantly larger home ranges than males, though sexes shared equal and moderate levels of home range overlap. Overall, range use did not vary across seasons, although within sexes, male range use varied significantly with climate. Moreover, daily path length was best predicted by day length, female reproductive state, and sex, but was unrelated to climate variables. While the patterns of range use and spatial association presented here share some similarities with “bisexually bonded” community models described for chimpanzees, we argue that ruffed lemurs best conform to a “nuclear neighborhood” community model wherein nuclear (core) groups share the highest levels of home range overlap, and where these groups cluster spatially into adjacent “neighborhoods” within the larger, communally defended territory.

Diversity and Prevalence of Diarrhea-Associated Viruses in the Lemur Community and Associated Human Population of Ranomafana National Park, Madagascar

2015 ◽  
Vol 36 (1) ◽  
pp. 143-153 ◽  
Author(s):  
Sarah Zohdy ◽  
Marissa K. Grossman ◽  
Ian R. Fried ◽  
Fidisoa T. Rasambainarivo ◽  
Patricia C. Wright ◽  
...  
Keyword(s):  
National Park ◽  
Human Population ◽  
Ranomafana National Park

scholarly journals The effects of a national highway on the Endangered golden-brown mouse lemur Microcebus ravelobensis in Ankarafantsika National Park, Madagascar

Oryx ◽  
2017 ◽  
Vol 53 (4) ◽  
pp. 727-731 ◽  
Author(s):  
Malcolm S. Ramsay ◽  
Andriamahery Razafindrakoto ◽  
Shawn M. Lehman
Keyword(s):  
National Park ◽  
Mouse Lemur ◽  
Population Subdivision ◽  
Empirical Testing ◽  
Future Studies ◽  
North West ◽  
Mouse Lemurs ◽  
Interior Forest ◽  
Males And Females ◽  
Dispersal Events

AbstractAlthough roads are often assumed to be barriers to the dispersal of arboreal species, there has been little empirical testing of this assumption. If arboreal animals are unable to cross roads, population subdivision may occur, or resources may become inaccessible. We tested the hypothesis that Route Nationale 4 (RN4), a paved highway, was a barrier to movement and dispersal of the Endangered golden-brown mouse lemur Microcebus ravelobensis in Ankarafantsika National Park, in north-west Madagascar. During June–August 2015 we conducted a capture–mark–recapture study at three sites: two adjacent to RN4 and one within intact forest without a potential barrier. During 2,294 trap nights we captured 120 golden-brown mouse lemurs 1,032 times. In roadside habitats we captured significantly more males than females, whereas the opposite was the case in interior forest habitat. We detected eighteen crossings of highway transects by nine individuals; however, all potential dispersal events involved males. In roadside habitat, movement was significantly inhibited in both males and females. We present some of the first data on the effects of roads on movement patterns in arboreal Malagasy mammals, showing species- and sex-biased effects of roads as dispersal barriers. Our findings indicate that roads may not be complete barriers to dispersal in lemurs. We recommend that conservation managers and scientists examine explicitly the effects of roads and natural arboreal bridges in Madagascar in future studies.

Sign in / Sign up

Export Citation Format

Share Document