Juniper Berries as an Exclusive Winter Forage for Townsend's Solitaires
Juniper Berries as an Exclusive Winter Forage for Townsend's Solitaires
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杜松子作为汤森纸牌植物的独家冬季饲料
DOI：
10.2307/2425289
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发表时间：
1982
影响因子：
0.6
通讯作者：
R. Lederer
中科院分区：
文献类型：
--
作者：
S. Poddar;R. Lederer
杜松子是汤森独生龙（Myadestes Townsendi）冬季唯一的食物。西刺柏浆果的营养成分与其他温带浆果类水果相似，但由于水分低，能量和营养成分集中，单位浆果的价值更高。按干重计算，成熟浆果平均含有 4% 的蛋白质、16% 的脂质、46% 的碳水化合物和 34% 的纤维和灰分；它们的热量含量约为每克 5 kcal。杜松子显然在冬季为独角仙提供了充足的营养和能量。
Juniper berries constitute the sole winter diet of the Townsend's solitaire (Myadestes townsendi). Nutrient content of Juniperus occidentalis berries is similar to that of other temperate zone berry-like fruits, but, because moisture is low, energy and nutritional content are concentrated and the berries offer more value per unit. Ripe berries contain an average of 4%o protein, 16%o lipid, 46%o carbohydrate and 34%o fiber and ash by dry weight; their caloric content is approximately 5 kcal per g. Juniper berries apparently provide both adequate nutrients and energy for solitaires during the winter.