| are sleeping site ecology and season linked to intestinal helminth prevalence and diversity in two sympatric, nocturnal and arboreal primate hosts (lepilemur edwardsi and avahi occidentalis)? | various factors, such as climate, body size and sociality are often linked to parasitism. this constrains the identification of other determinants driving parasite infections. here, we investigate for the first time intestinal parasites in two sympatric arboreal primate species, which share similar activity patterns, feeding ecology, body size and sociality, and cope with the same climate conditions, but differ in sleeping site ecology: the milne-edward's sportive lemur (lepilemur edwardsi) and ... | 2018 | 30005645 |
| sexual dimorphism and sex ratios in madagascan prosimians. | skull length was used to evaluate the extent of sexual dimorphism in size among 21 taxa of extant madagascan prosimians. extraneous sources of variation were controlled by limiting male-female comparisons to museum samples comprised of ten or more wild-caught, adult individuals collected at the same locality (24 samples total). sexual dimorphism in skull length averaged only 1.31%, with equal probability of males or females being larger. the only statistically significant sexual differences were ... | 1991 | 31952395 |
| locomotor ecology of lepilemur edwardsi and avahi occidentalis. | a well-known principle holds that where food supply is limited, two sympatric species with the same diet, morphology, and behavior will compete, leading to exclusion of one species or differentiation of their ecological niches. avahi occidentalis and lepilemur edwardsi are two saltatory, nocturnal folivorous lemurs of similar body size which live sympatrically over much of their range and may often be seen feeding in the same trees. we report a study of their locomotor behavior, carried out in o ... | 1997 | 9453697 |
| comparison of conservation metrics in a case study of lemurs. | conservation planning is important to protect species from going extinct now that natural habitats are decreasing owing to human activity and climate change. however, there is considerable controversy in choosing appropriate metrics to weigh the value of species and geographic regions. for example, the added value of phylogenetic conservation-selection criteria remains disputed because high correlations between them and the nonphylogenetic criteria of species richness have been reported. we eval ... | 2016 | 27113083 |
| duetting--a mechanism to strengthen pair bonds in a dispersed pair-living primate (lepilemur edwardsi)? | duetting is defined as an interactively organized pair display in which one pair partner coordinates its vocalizations in time with those of the other. it is widespread among tropical birds and cohesive pair-living primates, in which it is suggested to strengthen pair bonds. we know very little about the presence and function of duetting in dispersed pair-living mammals. we studied duetting behavior in a solitary foraging, but pair-sleeping, primate, the milne edwards' sportive lemur, in a dry d ... | 2009 | 19280671 |
| pair-specific usage of sleeping sites and their implications for social organization in a nocturnal malagasy primate, the milne edwards' sportive lemur (lepilemur edwardsi). | safe sleeping sites may be a limited resource crucial for survival. in order to investigate their potential significance for social organization in nocturnal primates, we analyzed the spatial distribution of daily sleeping sites, their characteristics, their usage, and sleeping group compositions in the nocturnal milne edwards' sportive lemur during a 6-month field study in the dry deciduous forest of northwestern madagascar. sexes did not differ either in body size or in body mass. sleeping sit ... | 2003 | 14533183 |
| lemur species-specific metapopulation responses to habitat loss and fragmentation. | determining what factors affect species occurrence is vital to the study of primate biogeography. we investigated the metapopulation dynamics of a lemur community consisting of eight species (avahi occidentalis, propithecus coquereli, microcebus murinus, microcebus ravelobensis, lepilemur edwardsi, cheirogaleus medius, eulemur mongoz, and eulemur fulvus) within fragmented tropical dry deciduous forest habitat in ankarafantsika national park, madagascar. we measured fragment size and isolation of ... | 2018 | 29742108 |
| sleeping site ecology, but not sex, affect ecto- and hemoparasite risk, in sympatric, arboreal primates (avahi occidentalis and lepilemur edwardsi). | a central question in evolutionary parasitology is to what extent ecology impacts patterns of parasitism in wild host populations. in this study, we aim to disentangle factors influencing the risk of parasite exposure by exploring the impact of sleeping site ecology on infection with ectoparasites and vector-borne hemoparasites in two sympatric primates endemic to madagascar. both species live in the same dry deciduous forest of northwestern madagascar and cope with the same climatic constraints ... | 2017 | 28943886 |
| loud calling, spacing, and cohesiveness in a nocturnal primate, the milne edwards' sportive lemur (lepilemur edwardsi). | dispersed pair-living primates provide a unique model for illuminating the evolution of mechanisms regulating spacing and cohesiveness in permanently cohesive groups. we present for the first time data on the spatiotemporal distribution and loud-calling behavior of the milne edwards' sportive lemur, known to forage solitarily during the night, but to form stable male-female sleeping groups during the day. data include radio-tracking observations of sleeping associations, and focal follows of pai ... | 2006 | 16331660 |
| isolation of sixteen autosomal loci and a sex-linked polymorphic microsatellite locus from the milne-edwards' sportive lemur (lepilemur edwardsi). | we isolated 21 microsatellites from the milne-edwards' sportive lemur, lepilemur edwardsi. eighteen microsatellite sequences possessed sufficient flanking dna for primer design. seventeen loci amplified and were found to be polymorphic displaying two to 17 alleles in 32 unrelated individuals from a population from the national park of ankarafantsika in northwest madagascar. one locus (led-12) was found to be sex linked located on the x chromosome and can be used to sex-type 40% of female l. edwa ... | 2009 | 21564642 |
| does nonnutritive tree gouging in a rainforest-dwelling lemur convey resource ownership as does loud calling in a dry forest-dwelling lemur? | nonhuman primates may defend crucial resources using acoustic or chemical signals. when essential resources are limited, ownership display for a resource may be enhanced. defending resources may depend on population density and habitat characteristics. using the milne edwards' sportive lemurs (lepilemur edwardsi) and weasel sportive lemurs (l. mustelinus) as models, we tested whether two cryptic nocturnal lemur species differing in population density and habitat show differences in their vocal a ... | 2010 | 20623502 |
| locomotor flexibility in lepilemur explained by habitat and biomechanics. | there are at present few comparable studies of lemur locomotion in the wild. this has unfortunately meant we have little knowledge about locomotor variation, and hence flexibility, with regard to differences in support availability and habitat structure. here we compare the locomotion of lepilemur edwardsi at ankarafantsika with that of lepilemur ruficaudatus at kirindy-mitea national park. while data were collected by two individuals, at different times, both studies used the same data collecti ... | 2015 | 25263105 |