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Showing 1 to 20 of 36 for “"lemur"”.
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Male Mating Success in Lemur catta
… was conducted on four groups of ring-tailed lemur (Lemur catta) at Berenty Reserve, Madagascar, with data collected over three mating seasons. I observed six complete estrous periods and four incomplete estrous periods, which represents the largest sample size reported on wild L. catta mating …
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Behavioural ecology of sympatric lemur species Lemur catta and Eulemur sp. In forest fragments, south-eastern Madagascar
… niche partitioning between native ring-tailed lemurs, Lemur catta, and an introduced hybrid brown lemur population of Eulemur rufus x E. collaris in Malaza gallery forest of Berenty reserve, in comparison with the natural sympatric population of ring-tailed lemurs and red collared brown lemurs, …
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Nonrandom seed dispersal by lemur frugivores: mechanism, patterns and impacts
… focusing on seed dispersal by three frugivorous lemur species in the biodiverse rainforest of Ranomafana National Park, Madagascar. An analysis of traits suggested that 84% of trees in Ranomafana are adapted for animal dispersal, of which more than 70% are dispersed by these three lemur species …
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Revealing the behavioural ecology of the elusive hairy-eared dwarf lemur (Allocebus trichotis)
In this study we followed hairy-eared dwarf lemurs (Allocebus trichotis), a small nocturnal strepsirrhine primate, using radio-tracking during a one year study. Our aim was to clarify the behavioural ecology of the species and in particular to determine habitat use, social organisation and seasonal …
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Home Range and Provisioning Use of Semi-Free-Ranging Ringtailed Lemurs (Lemur Catta)
The ringtailed lemur (Lemur catta) population on St. Catherines Island (SCI) may serve as a model system for reintroduction. Free-ranging troops of ringtailed lemurs have been managed on SCI since 1985 and are monitored and provisioned daily. There has been no assessment of the effects of …
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Examining Environmental Use by Captive <i>Lemur catta</i> and <i>Varecia rubra</i>
<p>There are over 100 named species of lemurs, of which 94% are considered threatened with extinction by the International Union for the Conservation of Nature (IUCN). They live in increasingly fragmented forests. To understand how best to protect them in their natural habitats, we can observe how …
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Ecology and conservation of the southern woolly lemur (Avahi meridionalis) in the Tsitongambarika Protected Area
… availability, and spatial distribution. Woolly lemurs, Avahi sp., are the only true nocturnal folivorous primates. This study aims to explore whether A. meridionalis experiences food constraints in the Tsitongambarika lowland rainforest of south-east Madagascar, a habitat that is expected to …
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How do human-induced environmental stressors shape the distribution, physiology, and behaviour of the Lemur leaf frog?
The Lemur leaf frog (Agalychnis lemur) is a critically endangered species of anuran whose survival is increasingly threatened by human-induced environmental stressors, such as habitat loss, fragmentation, and climate change. This study investigates how those stressors shape the physiology, …
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Female Social Rank and Steroid Production in Semi-Free Ranging Lemur Catta on St. Catherines Island, Georgia
… and ecology of their members. In ring-tailed lemurs (<em>Lemur catta)</em> these groups are characterized by female dominance, where females have priority over males for food, grooming, and space. Among females there is also a linear dominance hierarchy.<em> L. catta </em>have a strong …
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Lemur catta in the Region of Cap Sainte-Marie, Madagascar: Introduced cacti, xerophytic Didiereaceae-Euphorbia bush, and tombs
… study to document the natural history of <italic>Lemur catta</italic>, ring-tailed lemurs, outside of gallery forest environments: in xerophytic Didiereaceae-<italic>Euphorbia</italic>, bush habitat that represents over 90% of this species' potential range. Moreover, this study is the first to …
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Behavioural ecology and conservation of the Anosy mouse lemur (Microcebus tanost) in the littoral forests of southeastern Madagascar
Mouse lemurs are widely regarded as an ideal model taxa to study behavioural ecology, sociality and evolution in primates, however relatively few recognised forms have been studied to date. The principal aim of this work is to investigate the behavioural and ecological character of the Anosy mouse …
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Captive breeding programmes for nocturnal prosimians
… prosimian species (aye-aye, fat-tailed dwarf lemur, Goodman’s mouse lemur, grey mouse lemur, grey slender loris and pygmy slow loris) and determine their demographic self-sustainability. To achieve this aim studbook data was analysed. The difference between birth and death rates, infant …
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Ecological flexibility and conservation of Fleurette's sportive lemur, Lepilemur fleuretae, in the lowland rainforest of Ampasy, Tsitongambarika Protected Area
… to different environmental conditions. Sportive lemurs Lepilemur spp. are known to minimise energetic costs via short distances travelled, small home ranges, increased resting time, and low metabolic rates. Very little information, however, is available in the eastern rainforest, the habitat …
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Encounters in the forest: Social and ecological dimensions of lemur hunting, habitat change and biodiversity conservation in south-east Madagascar
… in south-east Madagascar, with an emphasis on lemur hunting. My fieldwork took place over 12 months during 2017-2020 (July-August, 2017, May-September, 2018, September-October, 2019, and March 2020), split across two study sites. Through my social research in two neighbouring communes I show …
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Role of Provisions and Season on Foraging and Female Dominance Behavior in Ring-Tailed Lemurs (Lemur Catta) on St. Catherine's Island
… its unique species, including ring-tailed lemurs. Ring-tailed lemurs (Lemur catta) live in matriarchal groups composed of a dominant female, adult males, subadult males and females, and young. Due to their dominance, it has been suggested that female ringtailed lemurs have access to the …
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Lemurs as protectors of the forest: Red-collared brown lemur seed dispersal, forest regeneration, and local livelihoods in the littoral forest fragments of southeastern Madagascar
… affected the ecology of red-collared brown lemurs (Eulemur collaris) in two littoral forests in southeastern Madagascar (Sainte Luce, Mandena). Since 1999, 14 behavioural studies have been conducted on this lemur species in these littoral forests, focusing on their diet, behaviour, activity …
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Hand Preference for Holding, Tapping, Probing and Digit-Feeding in Captive Adult Aye-ayes (<i>Daubentonia madagascariensis</i>)
<p>Aye-ayes are a species of lemur with several unique characteristics. They have the largest brain to body size ratio of any lemur and are the largest nocturnal primate. Insect larvae are a dietary staple. They use their elongated third digit to tap on structures such as tree bark and their large …
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Environmental Drivers of Dispersal in Black-and-White Ruffed Lemurs (<i>Varecia variegata</i>)
… in driving short-range black-and-white ruffed lemur (<em>Varecia variegata</em>) dispersal in the Ranomafana National Park (RNP) and adjacent Ambositra-Vondrozo Forest Corridor (COFAV) and compare results to published studies assessing the drivers of long-range dispersal. This dissertation had …
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Use of a Two-Action Paradigm Apparatus with Captive Lemurs: Insights into Social Learning
Lemurs have been understudied in cognitive research despite possessing a unique phylogenetic position as the lineage linking primates to other mammals. I used a two-action paradigm apparatus to test social learning abilities in seven lemur species at the Duke Lemur Center. There were three groups: …
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