Nutritional importance of seeds and arthropods to painted spiny pocket mice (Lyomis pictus): the effects of season and forest degradation
作者： Gustavo Ramírez-Hernández , L. Gerardo Herrera M.
DOI: 10.1139/Z10-087
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摘要: Temporal and spatial fluctuations in food abundance may affect the feeding habits of vertebrates tropical dry forests. We explored effects season forest degradation dietary patterns painted spiny pocket mouse (Lyomis pictus (Thomas, 1893)) (Heteromyidae) a Mexican forest. used carbon (13C, 12C) nitrogen (15N, 14N) stable isotope analyses to test hypotheses that (i) L. pictus would increase its use arthropods during rainy when seeds are less available on floor (ii) that L. pictus degraded compared with conserved Our were wrong because assimilated biomass was derived almost exclusively from both seasons importance marginal sites. Examination remains feces cheek pouches confirmed these trophic patterns. Seed hoarding high seed availability probably allows subsist seed-b...
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