Intraguild dietary overlap and its possible relationship to the coexistence of mesocarnivores in intensive agricultural habitats

作者: Luigi Remonti , Alessandro Balestrieri , Aritz Ruiz-González , Benjamín J. Gómez-Moliner , Enrica Capelli

DOI: 10.1007/S10144-012-0326-5

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摘要: The stone marten (Martes foina) and the pine (M. martes) are closely related mammalian carnivores potentially subject to exploitative competition. recent expansion of into intensively cultivated plain River Po (NW Italy), where previously only occurred, offered an interesting opportunity analyse their relationships. We studied distribution diet Martes species trophic niche overlap between martens red foxes (Vulpes vulpes) in two study areas, each with pseudoreplicates, by analysing genotyped faeces. Our results seem confirm displacement from one area, being occurring had been reported. found a large food fox both martens, but evidence size-related differences consumption some items. hypothesised that, due poor prey-base environment, highly altered intensive crop cultivation, intense interspecific competition originally occurred marten. heightening caused entry predator guild may have marten, at least temporarily. mechanism such needs be clarified through further surveys areas three occur sympatrically.

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