Scent Marking of Key Food Sources in the Eurasian Otter
作者： Luigi Remonti , Alessandro Balestrieri , Giorgio Smiroldo , Claudio Prigioni
DOI: 10.5735/086.048.0503
关键词: Biology 、 Intraspecific competition 、 Ecology 、 Context (language use) 、 Lutra 、 Biomass (ecology) 、 Spraint 、 Predation 、 Riparian zone 、 Otter
摘要: In the context of intraspecific competition, distribution key resources within a territory could influence spatial patterns scent deposition by owners, in order to maximise defensibility and reduce costs their defence. We investigated pattern spraint Eurasian otter (Lutra lutra) Mediterranean rivers southern Italy, testing hypothesis that spraints are concentrated around deep pools bordered riparian vegetation because these represent important patchy sources food. Otters strongly selected throughout year, marking largest ones which probably supported highest fish biomass. Sprainting sites at were also marked more consistently than elsewhere on watercourses. A positive correlation between percentage next (pool markings) overall volume main prey diet confirmed importance as prey. These results consistent with idea ...
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