Find research datasets worth reusing
Search datasets from major research repositories and use ShareScore to quickly assess how well each record supports discovery, access, and reuse.
14
datasets available to search
ShareScore release 0.9.0
Dataset results
14 results for “sifaka”
Data from: Hierarchical social networks shape gut microbial composition in wild Verreaux's sifaka
<p>In wild primates, social behaviour influences exposure to environmentally acquired and directly transmitted microorganisms. Prior studies indicate that gut microbiota reflect pairwise social interactions among chimpanzee and baboon hosts. Here, we demonstrate that higher-order social network structure—beyond just pairwise interactions—drives gut bacterial composition in wild lemurs, which live in smaller and more cohesive groups than previously studied anthropoid species. Using 16S rRNA gene sequencing and social network analysis of grooming contacts, we estimate the relative impacts of hierarchical (i.e. multilevel) social structure, individual demographic traits, diet, scent-marking, and habitat overlap on bacteria acquisition in a wild population of Verreaux's sifaka (<em>Propithecus</em> <em>verreauxi</em>) consisting of seven social groups. We show that social group membership is clearly reflected in the microbiomes of individual sifaka, and that social groups with denser grooming networks have more homogeneous gut microbial compositions. Within social groups, adults, more gregarious individuals, and individuals that scent-mark frequently harbour the greatest microbial diversity. Thus, the community structure of wild lemurs governs symbiotic relationships by constraining transmission between hosts and partitioning environmental exposure to microorganisms. This social cultivation of mutualistic gut flora may be an evolutionary benefit of tight-knit group living.</p>
Data from: Hierarchical social networks shape gut microbial composition in wild Verreaux's sifaka
Open the record for dataset details and reuse information.
Logical inferences from visual and auditory information in ruffed lemurs and sifakas
<p>Inference by exclusion, or the ability to select a correct course of action by systematically excluding other potential alternatives, is a form of logical inference that allow individuals to solve problems without complete information. Current comparative research shows that several bird, mammal, and primate species can find hidden food through inference by exclusion. Yet there is also wide variation in how successful different species are, as well kinds of sensory information they can use to do so. An important question is therefore why some species are better at engaging in logical inference than others. Here, we investigate the evolution of logical reasoning abilities by comparing two strepsirrhine primate species that vary in dietary ecology: frugivorous ruffed lemur (<em>Varecia</em> spp.) and folivorous Coquerel's sifakas (<em>Propithecus coquereli</em>). Across two studies, we examined their abilities to locate food using direct information versus inference from exclusion and using both visual and auditory information. In Study 1, we assessed whether these lemurs could make inferences when full visual and auditory information about the two potential locations of food were provided. In Study 2, we then compared their ability to make direct inferences versus inferences by exclusion in both the visual and auditory domains. We found that both lemur species can use visual information to find food, but that only ruffed lemurs were also able to use auditory cues, mirroring differences in the complexity of their wild ecology. We further found that, unlike many anthropoid species tested to date, both strepsirrhine species failed to make inferences by exclusion. These results highlight the importance of natural history in understanding the evolution of logical inference, and help reconstruct the deeper phylogeny of primate cognition.</p>
Social groups constrain the spatiotemporal dynamics of wild sifaka gut microbiomes
<p>Primates acquire gut microbiota from conspecifics through direct social contact and shared environmental exposures. Host behavior is a prominent force in structuring gut microbial communities, yet the extent to which group or individual-level forces shape the long-term dynamics of gut microbiota is poorly understood. We investigated the effects of three aspects of host sociality (social groupings, dyadic interactions, and individual dispersal between groups) on gut microbiome composition and plasticity in 58 wild Verreaux's sifaka (<i>Propithecus verreauxi</i>) from six social groups. Over the course of three dry seasons in a five-year period, the six social groups maintained distinct gut microbial signatures, with the taxonomic composition of individual communities changing in tandem among co-residing group members. Samples collected from group members during each season were more similar than samples collected from single individuals across different years. In addition, new immigrants and individuals with less stable social ties exhibited elevated rates of microbiome turnover across seasons. Our results suggest that permanent social groupings shape the changing composition of commensal and mutualistic gut microbial communities and thus may be important drivers of health and resilience in wild primate populations.</p>
Logical inferences from visual and auditory information in ruffed lemurs and sifakas
Open the record for dataset details and reuse information.
Social groups constrain the spatiotemporal dynamics of wild sifaka gut microbiomes
Open the record for dataset details and reuse information.
Variation in female leverage: The influence of kinship and market effects on the extent of female power over males in Verreaux's Sifaka
<p class="MsoNormal">Female mammals employ reproductive strategies (e.g., internal gestation) that result in power asymmetries specific to intersexual dyads. Because the number of eggs available for fertilization at any given time for most mammals is quite limited, having a fertilizable egg is potentially an important source of economic power for females. Control over mating opportunities is a source of intersexual leverage for female Verreaux's sifaka (<em>Propithecus verreauxi</em>). We examined economic factors thought to influence the value of mating opportunities, and, thus, the extent of female leverage: kinship and market effects. Using a longitudinal dataset of agonistic interactions collected during focal animal sampling of all adult individuals in 10 social groups from 2008-2019, we tested the effects of relatedness, female parity, reproductive season, and adult sex ratio (population and group) on (1) the direction of submissive signalling and (2) which sex won a contested resource. While 96% of the acts of submission were directed from males towards females, females only won a third of their conflicts with males. Thus, our study has implications for evolutionary explanations of female-biased power. If female power evolved due to their greater need for food and other resources, then intersexual conflicts would be expected to result in males more consistently relinquishing control of resources. As expected, males were more likely to chatter submissively towards successful mothers, during the mating season, and when the sex ratio was male-biased. Although females generally had less power to win a conflict when their fertilizable egg was less valuable (when they were nulliparous or unsuccessful mothers or when interacting with male kin) and with an increasing female-bias in the sex ratio, this ability to win additionally was influenced by which sex initiated the conflict. Our study demonstrates that female leverage can be influenced by the supply and demand for mating opportunities, but evoking submission does not translate into winning a resource. Indeed, intersexual power is dynamic, contextual, and dependent on the individuals in the dyad.</p>
On following pages: 12. Crowned Sifaka (Propithecus coronatus); 13. Coquerel's Sifaka (Propithecus coquerell); 14. Tattersall's Sifaka (Propithecus tattersall); 15. Diademed Sifaka (Propithecus diadema); 16. Milne-Edwards's Sifaka (Propithecus edwardsi); 17. Silky Sifaka (Propithecus candidus); 18. Perrier's Sifaka (Propithecus perrieri). in Indriidae
On following pages: 12. Crowned Sifaka (Propithecus coronatus); 13. Coquerel's Sifaka (Propithecus coquerell); 14. Tattersall's Sifaka (Propithecus tattersall); 15. Diademed Sifaka (Propithecus diadema); 16. Milne-Edwards's Sifaka (Propithecus edwardsi); 17. Silky Sifaka (Propithecus candidus); 18. Perrier's Sifaka (Propithecus perrieri).
Distribution. Restricted and patchy range in NE Madagascar that includes the humid forest belt extending from the Marojejy Massif and the Andapa Basin to Maroantsetra; the Androranga River may be the NE distributional limit in the Tsaratanana Corridor, although further surveys are needed to confirm this, and the Antainambalana River in the Makira Forest protected area is currently regarded as the S boundary. Currently, Marojejy represents the N limit ofits distribution, although historic range maps suggest that it once occurred as far N as the Bemarivo River near Sambava. The NE distributional limit in Makira was only recently established, when a few groups were found in the Antohaka Lava Forest, but informal reports suggest that the unprotected Maherivaratra Forest, outside NE Makira, may also contain Silky Sifakas. in Indriidae
Distribution. Restricted and patchy range in NE Madagascar that includes the humid forest belt extending from the Marojejy Massif and the Andapa Basin to Maroantsetra; the Androranga River may be the NE distributional limit in the Tsaratanana Corridor, although further surveys are needed to confirm this, and the Antainambalana River in the Makira Forest protected area is currently regarded as the S boundary. Currently, Marojejy represents the N limit ofits distribution, although historic range maps suggest that it once occurred as far N as the Bemarivo River near Sambava. The NE distributional limit in Makira was only recently established, when a few groups were found in the Antohaka Lava Forest, but informal reports suggest that the unprotected Maherivaratra Forest, outside NE Makira, may also contain Silky Sifakas.
Distribution. NE & E Madagascar from the Mananara River in the N to the Mangoro and Onive rivers in the S; although the precise distributional limits are unknown, the Diademed Sifaka is thought to be the most widely distributed of the sifakas, occurring throughout Madagascar's E rainforests. Historically, its distribution extended farther N to just S of the Antainambalana River, but it has not been found in recent years during fairly extensive studies of that region. in Indriidae
Distribution. NE & E Madagascar from the Mananara River in the N to the Mangoro and Onive rivers in the S; although the precise distributional limits are unknown, the Diademed Sifaka is thought to be the most widely distributed of the sifakas, occurring throughout Madagascar's E rainforests. Historically, its distribution extended farther N to just S of the Antainambalana River, but it has not been found in recent years during fairly extensive studies of that region.
Distribution. NW Madgascar, found discontinuously in the coast S of the Manambolo River, from where the distribution swings inland to the uplands before touching the coast again N and E of the Mahavavy River; reports of the Crowned Sifaka as far S as the Sakay River, as far E to Andanotongo, and SE beyond Tsiroanomandidy suggest that its distribution is more complicated than originally believed. Decken's (PF. deckeniz) and Crowned sifakas are often found in the same areas, although the Crowned Sifaka tends to be found further inland than the more coastal Decken's Sifaka. In general, the boundary between these two species is the Mahavavy River, while the Betsiboka River separates the Crowned Sifaka from Coquerel's Sifaka (PF. coquereli). in Indriidae
Distribution. NW Madgascar, found discontinuously in the coast S of the Manambolo River, from where the distribution swings inland to the uplands before touching the coast again N and E of the Mahavavy River; reports of the Crowned Sifaka as far S as the Sakay River, as far E to Andanotongo, and SE beyond Tsiroanomandidy suggest that its distribution is more complicated than originally believed. Decken's (PF. deckeniz) and Crowned sifakas are often found in the same areas, although the Crowned Sifaka tends to be found further inland than the more coastal Decken's Sifaka. In general, the boundary between these two species is the Mahavavy River, while the Betsiboka River separates the Crowned Sifaka from Coquerel's Sifaka (PF. coquereli).
Distribution. CW Madagascar, found mainly between the Manambolo and Mahavavy rivers, the S limit of its distribution does not extend to the Tsiribihina River (which marks the N limit of Verreaux's Sifaka, P. verreauxi). This species and the Crowned Sifaka (PF. coronatus) are often found in the same areas, although the latter tends to be found further inland than the more coastal Decken's Sifaka. in Indriidae
Distribution. CW Madagascar, found mainly between the Manambolo and Mahavavy rivers, the S limit of its distribution does not extend to the Tsiribihina River (which marks the N limit of Verreaux's Sifaka, P. verreauxi). This species and the Crowned Sifaka (PF. coronatus) are often found in the same areas, although the latter tends to be found further inland than the more coastal Decken's Sifaka.
A 40-year dataset for sifaka (Propithecus verreauxi) at Bezà Mahafaly Special Reserve, SW Madagascar
<p>The sifaka (<em>Propithecus verreauxi</em>) has been monitored and studied at the Bezà Mahafaly Special Reserve (BMSR) in southwest Madagascar since 1984. The Yale Peabody Museum (New Haven, USA) hosts the Sifaka Database, under a collaborative agreement with the School of Agronomy, University of Antananarivo (Madagascar). The Database encompasses over 900 individuals,<strong> </strong><span>providing information on male and female life history parameters, individual development and aging, and social group dynamics<strong>.</strong><span> </span></span>The purpose of the Database is to support research, serve as a resource for teaching, and contribute to the conservation of biodiversity in and around the BMSR.</p>
Variation in female leverage: The influence of kinship and market effects on the extent of female power over males in Verreaux’s Sifaka
Open the record for dataset details and reuse information.
ScienceDex guides
Understand access before you commit
These curated guides explain access requirements, typical timelines, costs, and reuse considerations for widely used research datasets.
Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.