Niche Partitioning Among White-Lipped Peccaries (Tayassu pecari), Collared Peccaries (Pecari tajacu), and Feral Pigs (Sus Scrofa)

Desbiez, Arnaud Léonard Jean; Santos, S. A.; Keuroghlian, Alexine; Bodmer, Richard E.

doi:10.1644/08-mamm-a-038.1

Cited by 98 publications

(98 citation statements)

References 49 publications

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“…Peccaries were similar regarding their exploitation of the thermal gradient and responses to the seasonal variations, as previously reported for other niche dimensions tested in the Pantanal (Desbiez et al 2009;Keuroghlian et al 2009a;Oliveira-Santos et al 2013). The species showed extensive overlap and similar niche breadth values in both periods evaluated.…”

Section: Activity Pattern and Thermal Nichesupporting

confidence: 84%

“…Although certain studies have evaluated niche overlap for white-lipped and collared peccaries and the co-occurrence of these species in the Pantanal (Desbiez and Keuroghlian 2009;Desbiez et al 2009;Keuroghlian et al 2009a;Oliveira-Santos 2009;Oliveira-Santos et al 2011), the competitive relationships between these species are not yet clear. Because of its greater body size and more numerous herds, the white-lipped peccary can be considered the dominant species in a possible interference competition with the collared peccary (OliveiraSantos et al 2011).…”

Section: Introductionmentioning

confidence: 99%

“…We conducted our study in one of the driest regions of the Brazilian Pantanal, where heavy flooding during the summer months contrasts with a pronounced dry season during the rest of the year. Throughout the sampling period, the study area was free of feral hogs (Sus scrofa), an exotic species spread throughout most of the Pantanal (Desbiez et al 2011;Desbiez et al 2009). S. scrofa is considered ecologically equivalent to the peccaries, and the presence of the species could bias the evaluation of the competitive relationship between the white-lipped and collared peccary (Gabor and Hellgren 2000), although there is no evidence of competition by interference (Oliveira-Santos et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

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Implications of climatic seasonality on activity patterns and resource use by sympatric peccaries in northern Pantanal

et al. 2015

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We evaluated the effects of climate seasonality from a thermal and water availability perspective on the activity patterns and resource use of Pecari tajacu and Tayassu pecari during wet and dry seasons in the northeastern Brazilian Pantanal. We used camera traps and temperature sensors to record species activity patterns in relation to temperature, established five habitat categories based on flooding intensity and local vegetation characteristics, assessed the activity patterns of each species in dry and wet periods and in artificial water bodies using circular statistical metrics, and calculated niche amplitude and overlap on three axes (temperature, time, and habitat) in both periods. Peccaries shared a strong resemblance in resource use and in their responses to seasonal variations in the tested gradients. The activity patterns of both species exhibited a significant correlation with air temperature on all the evaluated measures, and both species strongly reduced their activity when the air temperature exceeded 35 °C. High temperatures associated with low water availability were most likely responsible for the changes in species activity patterns, which resulted in an increased temporal overlap in habitat use throughout the dry season. However, the peccaries avoided intensively flooded habitats; therefore, the habitat gradient overlap was greater during the wet period. Our results show that an increase in niche overlap on the environmental gradient as a result of climatic seasonality may be partially compensated by a reduction in other niche dimensions. In this case, temporal partitioning appears to be an important, viable mechanism to reduce competition by potentially competing species.

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Section: Activity Pattern and Thermal Nichesupporting

confidence: 84%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Implications of climatic seasonality on activity patterns and resource use by sympatric peccaries in northern Pantanal

et al. 2015

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“…Natural pastures of the Pantanal are mainly formed by species such as Axonopus purpusii (Mez) Chase, use between feral pigs and peccaries in the Pantanal were found to be lower than expected (Desbiez et al 2009). …”

Section: Introduced Plantsmentioning

confidence: 86%

Introduced species in the Pantanal: implications for conservation

Alho

Mamede²,

Bitencourt

et al. 2011

Braz. J. Biol.

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Land use and human occupation within the natural habitats of the Pantanal have facilitated introduction of invasive species of plants and animals, including domestic species. Exotic species threaten regional biodiversity because they modify ecological community structure, alter natural habitats and affect local biodiversity. An international organisation, the International Union for Conservation of Nature (IUCN), and the Brazilian government, identify invasive species as the third most important threat to biodiversity, following habitat loss and direct effect on species. In addition, exotic species carry pathogens or may function as vectors or reservoirs for diseases that affect regional biota.

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“…The high parasitism of P. heptaphyllum and C. sessilis could be related to the feeding behavior of their seed dispersers. Desbiez et al (2009) examined the diet of collared peccaries -Pecari tajacu (Linnaeus 1758) -in the Pantanal and observed the presence of Langsdorffia hypogaea in 21% of the fecal samples. In an earlier study, Desbiez (2007) observed the presence of fruits of Protium sp.…”

Section: Short Communicationmentioning

confidence: 99%

Ecological aspects of Langsdorffia hypogaea (Balanophoraceae) parasitism in the Pantanal wetlands

2015

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Most studies on holoparasitic plants have focused on taxonomic or systematic issues. The objective of this study was to examine the ecological aspects of parasitism of Langsdorffia hypogaea (Balanophoraceae) in the Pantanal wetlands. Individuals of L. hypogaea were dug out by hand and the host trees were identified. Eighty-eight percent of host trees exhibited zoochory dispersal syndrome. Protium heptaphyllum and Cordiera sessilis represented 50% of the sampled trees. Both species are evergreen and are preferentially shade-tolerant species growing under the canopy of other trees. Fecal sample of collared peccaries (Pecari tajacu) had seeds from both the host tree (Protium sp.) and the parasite L. hypogaea. We therefore propose the hypothesis that P. tajacu play a role as a seed disperser and may affect root parasitism.

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Niche Partitioning Among White-Lipped Peccaries (Tayassu pecari), Collared Peccaries (Pecari tajacu), and Feral Pigs (Sus Scrofa)

Cited by 98 publications

References 49 publications

Implications of climatic seasonality on activity patterns and resource use by sympatric peccaries in northern Pantanal

Implications of climatic seasonality on activity patterns and resource use by sympatric peccaries in northern Pantanal

Introduced species in the Pantanal: implications for conservation

Ecological aspects of Langsdorffia hypogaea (Balanophoraceae) parasitism in the Pantanal wetlands

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