Abundance changes and activity flexibility of the oncilla, Leopardus tigrinus (Carnivora: Felidae), appear to reflect avoidance of conflict

Oliveira‐Santos, Luiz Gustavo Rodrigues; Graipel, Maurício Eduardo; Tortato, Marcos Adriano; Zucco, Carlos André; Cáceres, Nilton C.; Goulart, Fernando Vilas Boas

doi:10.1590/s1984-46702012000200003

Cited by 37 publications

(30 citation statements)

References 17 publications

(9 reference statements)

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“…This species can avoid competition by foraging at different times of the day (spatio-temporal avoidance). Similar results are cited by Oliveira-Santos et al (2012), in a study that investigated the flexibility of the ecology of Southern tiger cat. Our data suggest that jaguarundis are much more active during the day, which could be increasing the potential of competition with Southern tiger cat.…”

Section: Discussionsupporting

confidence: 83%

“…There is only one study that investigated the home range of jaguarundis in South America (Michalski et al, 2006), and few references about densities of Southern tiger cat populations through its distribution in Brazil (Tortato and Oliveira, 2005;Oliveira-Santos et al, 2012). Despite this dearth of information on the ecology of these species, they are classified as threatened by regional (Fontana et al, 2003) and national red lists Tortato et al, 2013;Almeida et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

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Home range and density of three sympatric felids in the Southern Atlantic Forest, Brazil

2016

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Home range and minimal population densities of Southern tiger cat (Leopardus guttulus), margay (Lepardus wiedii) and jaguarundi (Puma yagouaroundi) , e 0,04 gatos-mourisco por km 2 . As estimativas de densidade são oriundas de áreas sem a presença de jaguatiricas (Leopardus pardalis) ou outros predadores de maior porte, todos localmente extintos, com possíveis efeitos de um tipo específico de relaxamento de mesopredadores, conhecido como "Efeito Pardalis" que podem permitir o aumento do tamanho das populações de gatos menores.

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Section: Discussionsupporting

confidence: 83%

Section: Introductionmentioning

confidence: 99%

Home range and density of three sympatric felids in the Southern Atlantic Forest, Brazil

2016

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“…L. wiedii, L. pardalis and Puma concolor). Most rodents, the main prey consumed by oncillas and other felid competitors (Oliveira et al, 2010), could present moon phobia, and thus decrease in availability to the predators during these moon phases (Lockard and Owings, 1974;Kaufman and Kaufman, 1982;Price et al, 1984). These ideas lead us to two nonexcluding hypotheses to explain the observed pattern: (i) the melanistic individuals are more cryptic for their prey, ambushing prey more easily than other competitors on bright nights, compensating for the decrease in prey activity; (ii) poor quality foraging on bright nights did not compensate the high exposure of spotted oncillas to predators, but dark coat colour could offset this risk.…”

Section: Discussionmentioning

confidence: 99%

The role of melanism in oncillas on the temporal segregation of nocturnal activity

et al. 2014

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The occurrence of coat colour polymorphisms in populations may promote the ecological success of species by permitting a wider spectrum of use of different subsets of available resources. We conducted an analysis of temporal segregation by comparing night brightness with nocturnal activity of spotted and melanistic oncillas (Leopardus tigrinus). Melanistic oncillas were more active during bright nights and spotted oncillas and other species were more active during dark nights. Each colour morph occupied a temporal niche outside the confidence interval of the other colour morph, demonstrating the ecological significance of polymorphic colour patterns in this felid species.Keywords: Leopardus tigrinus, activity, moonlight, camera trap. O papel do melanismo na segregação temporal da atividade noturna do gato-do-mato-pequeno ResumoA ocorrência de polimorfismo no padrão de pelagem de populações pode promover o sucesso ecológico das espécies por permitir um amplo espectro de uso de diferentes parcelas de recursos disponíveis. Nós testamos a existência de diferença na segregação temporal do gato-do-mato-pequeno (Leopardus tigrinus), comparando a luminosidade durante períodos de atividade noturna de indivíduos pintados e melânicos. Indivíduos melânicos de gato-do-mato-pequeno foram mais ativos durante noites claras e indivíduos pintados de gato-do-mato-pequeno e outras espécies foram mais ativas durante noites escuras. Cada forma de coloração ocupou um nicho temporal fora do intervalo de confiança do outro, demonstrando a significância ecológica dos padrões de polimorfismo de colorações nesta espécie de felino.Palavras-chave: Leopardus tigrinus, atividade, luminosidade da lua, armadilha fotográfica.

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“…A failure in the detection of the two feline species mentioned above could be due to two non-excludent reasons, (1) their naturally low population densities (Lyra- Jorge et al 2008, Almeida et al 2013, and (2) the high frequency of Puma concolor and Leopardus pardalis in several trails, whose presence has been negatively related to the occurrence of these species , Oliveira 2011, Oliveira-Santos et al 2012. In addition, for L. wiedii, trail characteristics -which were more open, wide and managed than the preferred by the species --could have contributed to this result (Goulart et al 2009).…”

Section: Discussionmentioning

confidence: 99%

Medium and large-sized mammals of the Reserva Ecológica de Guapiaçú, Cachoeiras de Macacu, RJ

2014

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Medium and large-sized terrestrial mammals develop important functions in ecosystems maintenance. However, this group is the most vulnerable to local extinctions, through habitat loss or hunting. This study inventoried the community of medium and large mammals in the Reserva Ecológica de Guapiaçú (REGUA), Cachoeiras de Macacu, RJ, providing data on species composition, richness and abundance. Species were registered through the use of camera traps, sign survey and visual encounters on pre-existing trails and roads. The study was conducted from January to October 2012, with each month considered as a sample unit. An effort of 1568 cameras-day and 120 km traveled, resulted on 302 records of 22 species of medium and large-sized mammals, belonging to eight orders. This value corresponds to more than three-quarters of the richness described from this group in the Atlantic Forest of Rio de Janeiro state. Five species are under some level of regional, national or global threat. Three game species, Pecari tajacu, Cuniculus paca and Dasyprocta leporina were abundant in the area. The observed richness was comparable to that found in other studies conducted in rain forests. Thus, for its high number of species, including those under some degree of threat, we conclude that REGUA is an important area to mammal conservation, especially in the Atlantic Forest of Rio de Janeiro state.

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Abundance changes and activity flexibility of the oncilla, Leopardus tigrinus (Carnivora: Felidae), appear to reflect avoidance of conflict

Cited by 37 publications

References 17 publications

Home range and density of three sympatric felids in the Southern Atlantic Forest, Brazil

Home range and density of three sympatric felids in the Southern Atlantic Forest, Brazil

The role of melanism in oncillas on the temporal segregation of nocturnal activity

Medium and large-sized mammals of the Reserva Ecológica de Guapiaçú, Cachoeiras de Macacu, RJ

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