オオヒシクイに採食されるイネ再生稈根元部分と, 食べ残される上の部分の栄養成分

抄録

When grazing upon secondary rice stems, Middendorff's Bean Goose Anser fabalis middendorffii, forages the lower stem parts but discards the upper parts. We examined the nutritional composition of these parts of secondary rice stem, and discovered that the lower stem parts are energetically superior to the upper stem parts. This might explain the selective grazing behaviour of Middendorff's Bean Goose on secondary rice stems.