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result(s) for
"Margay"
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Prey availability and temporal partitioning modulate felid coexistence in Neotropical forests
by
Wearn, Oliver R.
,
Gonçalves, André Luis Sousa
,
Santos, Fernanda
in
Accounting
,
Animals
,
Biodiversity
2019
Carnivores have long been used as model organisms to examine mechanisms that allow coexistence among ecologically similar species. Interactions between carnivores, including competition and predation, comprise important processes regulating local community structure and diversity. We use data from an intensive camera-trapping monitoring program across eight Neotropical forest sites to describe the patterns of spatiotemporal organization of a guild of five sympatric cat species: jaguar (Panthera onca), puma (Puma concolor), ocelot (Leopardus pardalis), jaguarundi (Herpailurus yagouaroundi) and margay (Leopardus wiedii). For the three largest cat species, we developed multi-stage occupancy models accounting for habitat characteristics (landscape complexity and prey availability) and models accounting for species interactions (occupancy estimates of potential competitor cat species). Patterns of habitat-use were best explained by prey availability, rather than habitat structure or species interactions, with no evidence of negative associations of jaguar on puma and ocelot occupancy or puma on ocelot occupancy. We further explore temporal activity patterns and overlap of all five felid species. We observed a moderate temporal overlap between jaguar, puma and ocelot, with differences in their activity peaks, whereas higher temporal partitioning was observed between jaguarundi and both ocelot and margay. Lastly, we conducted temporal overlap analysis and calculated species activity levels across study sites to explore if shifts in daily activity within species can be explained by varying levels of local competition pressure. Activity patterns of ocelots, jaguarundis and margays were similarly bimodal across sites, but pumas exhibited irregular activity patterns, most likely as a response to jaguar activity. Activity levels were similar among sites and observed differences were unrelated to competition or intraguild killing risk. Our study reveals apparent spatial and temporal partitioning for most of the species pairs analyzed, with prey abundance being more important than species interactions in governing the local occurrence and spatial distribution of Neotropical forest felids.
Journal Article
Margay
by
Eizirik, Eduardo
,
Tirelli, Flavia P
,
Horn, Paula E
in
Distribution
,
Habitat modification
,
Margay
2020
The margay (Leopardus wiedii) is a small Neotropical arboreal wild cat. This species is thought to be forest-dependent, although few studies so far have directly evaluated the relationships between spatiotemporal aspects of its ecology and landscape characteristics. The aim of this study was to estimate margay population density and activity patterns in six areas with different habitat types and levels of anthropogenic disturbance in the southernmost Atlantic Forest of Brazil. Our working hypothesis was that density and activity patterns differed between areas in response to differences in forest cover and anthropogenic disturbance. Margay records were obtained using camera trapping, during spring and summer from 2017 to 2019. In all areas, the sampling scheme consisted of 20 un-baited stations, set 1km apart, each containing two paired cameras. We assessed the potential effects of environmental variables, including anthropogenic factors, on margay density, rate of detection and space use by comparing nine spatial capture-recapture (SCR) models. Activity patterns of the margay, its potential prey, and competitors were described and compared using the date and time of the records. We obtained 66 records of margay. Two of the six sampled areas were excluded from subsequent analyses due to the small number of records. The density estimated by the top-ranked model varied from 9.6±6.4 individuals/100km.sup.2 in the area with the highest human disturbance to 37.4±15.1 individuals/100km.sup.2 in a less disturbed area. Margay densities responded positively to vegetation cover, supporting the hypothesis of forest dependence by the species. Both the margay and their potential prey (small rodents and marsupials) were found to be mostly nocturnal. Margay activity also overlapped with that of the ocelot, Leopardus pardalis, and with mammals associated with human presence (wild boar, cattle, domestic dogs and cats). This is the first multi-area study on patterns of density and activity of the margay in the Brazilian Atlantic Forest. We concluded that the margay is mostly nocturnal, and while its densities are positively influenced by forest cover and negatively influenced by human disturbance, the activity pattern of the species does not seem to change across landscapes with distinct levels of human modification. Margay populations seem to be able to persist under moderate levels of habitat modification, highlighting the importance of preserving even small native forest remnants in the highly fragmented Atlantic Forest.
Journal Article
Margay (Leopardus wiedii) in the southernmost Atlantic Forest: Density and activity patterns under different levels of anthropogenic disturbance
by
Horn, Paula E.
,
Eizirik, Eduardo
,
Tirelli, Flávia P.
in
Activity patterns
,
Anthropogenic factors
,
Biology and Life Sciences
2020
The margay (Leopardus wiedii) is a small Neotropical arboreal wild cat. This species is thought to be forest-dependent, although few studies so far have directly evaluated the relationships between spatiotemporal aspects of its ecology and landscape characteristics. The aim of this study was to estimate margay population density and activity patterns in six areas with different habitat types and levels of anthropogenic disturbance in the southernmost Atlantic Forest of Brazil. Our working hypothesis was that density and activity patterns differed between areas in response to differences in forest cover and anthropogenic disturbance. Margay records were obtained using camera trapping, during spring and summer from 2017 to 2019. In all areas, the sampling scheme consisted of 20 un-baited stations, set 1km apart, each containing two paired cameras. We assessed the potential effects of environmental variables, including anthropogenic factors, on margay density, rate of detection and space use by comparing nine spatial capture-recapture (SCR) models. Activity patterns of the margay, its potential prey, and competitors were described and compared using the date and time of the records. We obtained 66 records of margay. Two of the six sampled areas were excluded from subsequent analyses due to the small number of records. The density estimated by the top-ranked model varied from 9.6±6.4 individuals/100km2 in the area with the highest human disturbance to 37.4±15.1 individuals/100km2 in a less disturbed area. Margay densities responded positively to vegetation cover, supporting the hypothesis of forest dependence by the species. Both the margay and their potential prey (small rodents and marsupials) were found to be mostly nocturnal. Margay activity also overlapped with that of the ocelot, Leopardus pardalis, and with mammals associated with human presence (wild boar, cattle, domestic dogs and cats). This is the first multi-area study on patterns of density and activity of the margay in the Brazilian Atlantic Forest. We concluded that the margay is mostly nocturnal, and while its densities are positively influenced by forest cover and negatively influenced by human disturbance, the activity pattern of the species does not seem to change across landscapes with distinct levels of human modification. Margay populations seem to be able to persist under moderate levels of habitat modification, highlighting the importance of preserving even small native forest remnants in the highly fragmented Atlantic Forest.
Journal Article
Geographic distribution modeling of the margay (Leopardus wiedii) and jaguarundi (Puma yagouaroundi): a comparative assessment
by
Espinosa, Caroline C.
,
Silva, Lucas Gonçalves da
,
Favarini, Marina O.
in
cats
,
environmental predictors
,
Feature Articles
2018
The Neotropical region currently harbors 8 recognized species of small cats, including the margay (Leopardus wiedii) and jaguarundi (Puma yagouaroundi). These similar-sized species have broad geographic distributions and commonly occur in sympatry. We constructed species occurrence databases and used the maximum entropy (Maxent) modeling approach to develop models of habitat suitability for each of these species. We identified the environmental predictors with the highest importance for species occurrence and evaluated how they influence habitat suitability for both wild cats. Variables related to temperature and precipitation were good predictors of species occurrence, with both cats responding similarly to them. However, margay showed higher variation in habitat suitability depending on local climatic predictors. The estimated models indicated high niche similarity (> 76%) between these cats, but despite this we identified different areas with the most favorable conditions for each species' occurrence. Approximately 50% and 72% of the entire suitable area were estimated as being moderately to highly suitable for margay and jaguarundi, respectively, with the margay model comprising a higher proportion of forest environments in comparison to that of the jaguarundi. These findings will be relevant in the context of conservation planning when indicating the priority areas for their long-term preservation.
Journal Article
Two neotropical spotted felids in the Nevado de Toluca Volcano? The highest altitude records
by
Zarco-González, Zuleyma
,
Monroy-Vilchis, Octavio
,
Zarco-González, Martha Mariela
in
Altitude
,
Cameras
,
Forests
2024
Leopardus wiedii and Leopardus pardalis are endangered small felids. Its main altitudinal range expands from sea level to 1,500 m. Camera traps were placed in the Matawi Indigenous Park on the Nevado de Toluca Volcano. Photographic records were obtained of L. wiedii at 3,207 masl and of L. pardalis at 3,307 masl. This is the highest altitudinal record for margay in its distribution, and for ocelot is the highest in the northern hemisphere.
Journal Article
Decadal changes in environmental suitability for the margay (Leopardus wiedii) under anthropogenic pressure in the Yucatán Peninsula
by
Chiappa‐Carrara, Xavier
,
García‐Burgos, Jimena
,
Yáñez‐Arenas, Carlos
in
Agricultural expansion
,
Agricultural land
,
Anthropogenic factors
2026
Assessing distinct impacts of human activities on species distribution is crucial for developing effective conservation strategies. The margay (Leopardus wiedii) is a poorly studied and highly threatened species due to its dependence on forest habitats. Within its distribution range, the Yucatán Peninsula (YP) is a key region due to its habitat diversity and biological connectivity. However, during the last decade, the YP has experienced accelerated anthropogenic pressures, and no studies have evaluated the differential impacts of human activities on margay distribution. In this study, we used MaxEnt species distribution models with Target‐Group bias correction to analyze how different types of human activities affected margay distribution and environmental suitability over the last decade (2010–2013 and 2020–2023). This represents the first regional‐scale assessment of margay distribution changes in the YP incorporating anthropogenic impacts over a decadal timeframe. Our results reveal contrasting patterns of habitat change: contraction areas ( 139,790 km2) showed significant vegetation loss and agricultural expansion, posing threats to margay persistence, while expansion areas ( 12,428 km2) demonstrated vegetation recovery within abandoned agricultural landscapes. These findings highlight the dual effects of human activities: agriculture emerges as a critical threat, while land abandonment and forest recovery offer opportunities for recolonization. Notably, margays showed resilience by adapting to disturbed habitats near urban edges, suggesting potential for persistence in human‐modified landscapes. Our study also advances methodological approaches for species distribution models by demonstrating the effectiveness of Target‐Group bias correction in small datasets, particularly for elusive species with limited occurrence records. This study evaluates how human activities impact margay (Leopardus wiedii) distribution in the Yucatán Peninsula, revealing habitat loss due to agriculture but also recolonization opportunities in abandoned lands. Species distribution models show range contraction (2010–2023), yet margays demonstrate resilience near disturbed habitats. The findings highlight agriculture as a key threat while underscoring methodological advances in modeling small datasets.
Journal Article
Small Felids Coexist in Mixed-Use Landscape in the Bolivian Amazon
2024
In the face of global species loss, it is paramount to understand the effects of human activity on vulnerable species, particularly in highly diverse, complex systems. The Greater Madidi Landscape in the Bolivian Amazon includes several biodiverse protected areas that were created with the goal of sustaining healthy and diverse ecosystems while not impeding the livelihoods of local indigenous peoples. In this study, we sought to use camera trap data and single-species occupancy analysis to assess the impacts of different forms of human activity on four species of small felids: ocelots (Leopardus pardalis), margays (Leopardus wiedii), jaguarundi (Herpailurus yagouaroundi), and oncilla (Leopardus tigrinus). We modeled both human variables (proximity to indigenous communities, roads, and tourist camps) and non-human variables (terrain ruggedness, proximity to rivers, canopy height, prey availability, and large cat abundance). Margay occupancy was unaffected by any of these human variables and ocelots showed only weak evidence of being affected by tourism. Ocelots were particularly pervasive throughout the study area and were consistently estimated to have high occupancy probability. We did not obtain sufficient data on jaguarundi or oncilla to reliably model these effects. Our results indicate that small cats successfully coexist both with each other and with the surrounding human activity in this unique landscape, which serves as a model for global protected area management.
Journal Article
Experimental Release of Orphaned Wild Felids into a Tropical Rainforest in Southwestern Costa Rica
by
Morera, Brayan
,
Sáenz-Bolaños, Carolina
,
Carrillo, Eduardo
in
Animals
,
Biomass
,
captive animals
2022
A 3- to 4-mo-old male ocelot (Leopardus pardalis) and a 6- to 8-mo-old female margay (Leopardus weidii) were brought in from the wild, held in captivity, and rehabilitated for 906 and 709 days, respectively, at the Rescate Wildlife Rescue Center in Costa Rica. During captivity, both cats were kept as isolated as possible from humans and fed appropriate live wild prey. After maturing and demonstrating the ability to capture and feed on live prey, the cats were radio-collared, released at a national wildlife refuge previously assessed for predator and prey occurrence, and monitored. After 54 days, the ocelot was trapped while preying on chickens in a nearby community, and after 20 days, the margay was found dead, likely due to ocelot predation. Avoiding habituation to humans, assuring hunting abilities, and assessing release sites likely is not sufficient to assure successful release of these species, and more experimental releases with innovative and detailed protocols and monitoring are needed.
Journal Article