Home range and use of residential gardens by yellow mongoose Cynictis penicillata in an urban environment

Author(s):  
Nadine Elizabeth Cronk ◽  
Neville Pillay
Mammalia ◽  
2019 ◽  
Vol 83 (5) ◽  
pp. 428-438 ◽  
Author(s):  
Nadine Cronk ◽  
Neville Pillay

Abstract Urbanisation creates challenges and opportunities for wildlife. Globally, small carnivores have colonised urban spaces, but we do not know whether or how sympatric carnivores partition resources in order to co-exist. We studied the diet and degree of dietary overlap of two sympatric herpestid mongooses – yellow, Cynictis penicillata, and slender, Galerella sanguinea mongoose – in a small urban nature area in South Africa. The composition of 2600 yellow and 2000 slender mongoose scats was sampled over a year in an Eco-Estate, where wildlife have contact with humans, and a Nature Estate, where contact is reduced. We analysed the frequency of occurrence of invertebrates, mammals, birds, plants and anthropogenic items in scats. Invertebrates and mammals were most abundant for both species in the Nature Estate and for slender mongoose in the Eco-Estate, while anthropogenic items were more prevalent in yellow mongoose scats in the Eco-Estate. Both species included anthropogenic items in their diet in the Eco-Estate only. Scat components varied seasonally. In summer, invertebrates were more abundant in scats of both species, yet during the colder months, invertebrates decreased and vertebrates (more so in the slender mongoose) and anthropogenic items (more so in the yellow mongoose) increased. Dietary overlap was greatest in summer and lowest in winter. Nonetheless, the specialised slender mongoose diet and a generalist yellow mongoose diet potentially facilitates their co-existence.


Animals ◽  
2019 ◽  
Vol 9 (7) ◽  
pp. 447
Author(s):  
Nadine Elizabeth Cronk ◽  
Neville Pillay

Several species are negatively impacted by urbanization, while others thrive in urban areas by exploiting anthropogenic habitats matching their pre-existing niche preferences, or by modifying their behavior for urban life. We studied the ecology of a recent urban resident, the yellow mongoose, in an urban ecological estate in South Africa. We assessed urban dwelling yellow mongooses’ diet, spatial and temporal occurrence, home range size, and whenever possible, compared our findings to the published literature on their non-urban conspecifics. Additionally, we evaluated occurrence overlap with residential gardens. Similar to their non-urban counterparts, scat analyses revealed that yellow mongooses in urban areas fed mainly on insects, particularly during spring/summer. In the colder months, anthropogenic items, small mammals and birds in scats increased. Camera trap surveys showed that the mongooses were common in open habitats, similar to previous studies, and exhibited a species-typical bimodal diurnal activity pattern. The occurrence of these mongooses was greater near human residences than at sites further away. Home range sizes were considerably smaller than those of non-urban mongoose. Mongoose occurred in residential gardens, more so during the colder months. The urban yellow mongooses’ diet, habitat preference and activity patterns were similar to non-urban conspecifics. Nonetheless, the exploitation of anthropogenic food sources, occurrence in residential gardens and smaller home range sizes showed that they respond flexibly to urbanization, and these modifications might aid in their success in urban areas.


2020 ◽  
Vol 6 (1) ◽  
Author(s):  
Nadine Elizabeth Cronk ◽  
Neville Pillay

Abstract Small carnivores are becoming increasingly common in urban areas. What has received less attention is whether and how resource partitioning among sympatric species in urban areas facilitates their coexistence. We examined the spatial, temporal and combined spatiotemporal occurrence and overlap of co-existing yellow mongoose Cynictis penicillata and slender mongoose Galerella sanguinea in an urban estate in South Africa. The reserve comprised two parts, an Eco-Estate where human residential and natural areas are interspersed and wildlife has greater contact with people, and a Nature Estate, where contact is reduced by palisade fencing between people and natural areas. Using photographic data from camera traps collected over 11 consecutive months, we found a moderate level of spatial overlap between the mongoose species. Differences between the species occurred at a finer habitat scale: yellow mongooses were more common in open habitats located near human residents whereas the slender mongooses were more common in covered areas further away from human residents. The detection probability of the yellow mongoose, however, was greater than that of the slender mongoose, and the occupancy probability of the slender mongoose was reduced in the presence of the yellow mongoose. Although both species demonstrated bimodal diurnal peaks in activity, they varied in their active periods, with temporal overlap being greater during colder than warmer months. No complete spatiotemporal overlap (occurrence in the same place at the same time/within a 10-min period) occurred. This may have been as a result of the difference in detection and occupancy probabilities of the two species. Resource availability (food), however, appears to influence the different habitat selection, space use, and activity patterns of yellow and slender mongoose in the study area. Therefore, we conclude that partitioning along the spatial and somewhat on the temporal dimensions aids in the coexistence of these mongoose species in an urban environment.


2012 ◽  
Vol 19 (1) ◽  
pp. 77-86 ◽  
Author(s):  
Jeffrey D. Wright ◽  
M. Scott Burt ◽  
Victoria L. Jackson

2021 ◽  
Author(s):  
Brian Cypher ◽  
Nicole A. Deatherage ◽  
Tory L. Westall ◽  
Erica C. Kelly ◽  
Scott E. Phillips

Abstract The San Joaquin kit fox (Vulpes macrotis mutica; SJKF) is federally endangered due to profound habitat loss. A population of SJKF occurs in the urban environment in the city of Bakersfield, California, and may be important for SJKF conservation. We conducted a systematic survey using automated cameras stations and occupancy analysis to identify suitable habitat for SJKF in Bakersfield and to estimate a conceptual carrying capacity in the urban environment. We identified high, medium, and low suitability habitat totaling 121 km2, 196 km2, and 40 km2, respectively. Based on a mean home range size of 0.78 km2 and an assumption of two adults in high suitability home ranges and one adult in medium suitability ranges, we estimated the adult carrying capacity in Bakersfield to be 561 foxes. This estimate seems plausible as the number of adult SJKF in Bakersfield was estimated to be 381 in 2015, and the number of foxes already had been reduced by a sarcoptic mange epidemic that began two years earlier. A carrying capacity of 561 adults would increase the estimated range-wide carrying capacity by as much as 38%. Density estimates derived for the urban SJKF population based on the carrying capacity (1.57/km2) and home range size (2.56/km2) were higher than estimates for foxes in natural habitats. The urban SJKF population in Bakersfield is substantial and therefore could contribute significantly to conservation and recovery efforts for SJKF. Given our results, a potential conservation strategy may be to encourage or even establish additional urban SJKF populations.


2022 ◽  
Author(s):  
Xander Duffy ◽  
Jake Wellian ◽  
Rebecca L. Smith

Abstract As urbanisation continues to reduce the available habitat for wildlife some species, such as the black-and-gold howler monkey (Alouatta caraya) in Pilar, southwest Paraguay, are making their homes in anthropogenic environments. Understanding an animal's home range is an important first step to understanding its ecological needs, an essential requirement for robust conservation plans. In this study we determined the home ranges and core areas of five groups of urban dwelling A. caraya using Minimum Convex Polygon (MCP) and Kernel Density Estimation (KDE) Analysis. We used a Spearman’s Correlation to explore the relationship between home range size and group size. All five groups had home ranges of less than 10 ha and used core areas of less than 1ha. Group size had no significant relationship to home range size. We provide the first estimates of home range for A. caraya in an urban environment in Paraguay. Though the home ranges of the urban A. caraya in Pilar, Paraguay fall at the smaller end of the spectrum of range sizes in Alouatta they are not abnormal for a species in this genus.


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