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Searching in heterogeneous and limiting environments: foraging strategies of white-lipped peccaries (Tayassu pecari)

Reyna Hurtado, Rafael Ángel | Chapman, Colin A [autor/a] | Calmé, Sophie [autor/a] | Pedersen, E. J [autor/a].
Tipo de material: Artículo impreso(a) Artículo impreso(a) Tema(s): Tayassu pecari | ZoogeografíaDescriptor(es) geográficos: Reserva de la Biosfera Calakmul (Campeche, México) Nota de acceso: Disponible para usuarios de ECOSUR con su clave de acceso En: Journal of Mammalogy. volumen 93, número 1 (Feb. 2012), páginas 124-133. --ISSN: 0022-2372Número de sistema: 38666Resumen:
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Searching for patchily distributed, highly localized, and seasonally variable resources in heterogeneous environments poses significant challenges for social species living in cohesive groups. Here, we studied the searching strategies of a highly social mammal, the white-lipped peccary (Tayassu pecari), in Calakmul Biosphere Reserve, Mexico. Calakmul Biosphere Reserve is a seasonal tropical forest where important resources, such as water and food, are patchy distributed and temporarily scarce. We attempted to determine what theoretical searching model best explained the movement patterns of groups of white-lipped peccaries, including short-tailed, long-tailed, and scale-free distributions. We found that the only distribution that was well supported by the data was a zero-inflated lognormal distribution; this implies a general pattern of normally short-range intensive searching with occasional long-distance directed movements taking the animals away from previously searched areas. We also found that groups concentrated foraging activities around sources of water during the dry season, behaving as central-place foragers while occasionally searching distant areas. We discuss the potential adaptive values of such behavioral strategies for social species living in highly heterogeneous environments.
Lista(s) en las que aparece este ítem: Conservación-Campeche
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Searching for patchily distributed, highly localized, and seasonally variable resources in heterogeneous environments poses significant challenges for social species living in cohesive groups. Here, we studied the searching strategies of a highly social mammal, the white-lipped peccary (Tayassu pecari), in Calakmul Biosphere Reserve, Mexico. Calakmul Biosphere Reserve is a seasonal tropical forest where important resources, such as water and food, are patchy distributed and temporarily scarce. We attempted to determine what theoretical searching model best explained the movement patterns of groups of white-lipped peccaries, including short-tailed, long-tailed, and scale-free distributions. We found that the only distribution that was well supported by the data was a zero-inflated lognormal distribution; this implies a general pattern of normally short-range intensive searching with occasional long-distance directed movements taking the animals away from previously searched areas. We also found that groups concentrated foraging activities around sources of water during the dry season, behaving as central-place foragers while occasionally searching distant areas. We discuss the potential adaptive values of such behavioral strategies for social species living in highly heterogeneous environments. eng

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