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首页> 外文期刊>Canadian Journal of Zoology >Survival rate of experimental food caches: implications for arctic foxes
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Survival rate of experimental food caches: implications for arctic foxes

机译：实验性食物储藏室的成活率：对北极狐的影响

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摘要

Avoiding cache loss is critical to food-hoarding animals. Arctic foxes (iAlopex lagopus (L., 1758)) scatter-hoard thousands of eggs annually at large goose colonies, and we examined how survival rate of experimental caches were influenced by (ii) nesting density by geese, (iii) relative proportion of two sympatric goose species, (iiii) departure by ca. 1 million geese and their young after hatch, and (iiv) age of cache sites. Survival rate of experimental caches was related to age of cache sites in the 1st year of the study (0.80 and 0.56 per 18-day period for caches from new and 1-month-old cache sites, respectively) and departure by geese in the 2nd year of the study (0.98 and 0.74 per 18-day period during and after goose nesting, respectively). These results suggest that food abundance and deterioration of cache sites (e.g., loss of soil cover and partial exposure of caches) were important factors affecting cache loss at our study site.
机译：避免缓存丢失对food积食物的动物至关重要。北极狐（iAlopex lagopus（L.，1758））在大型鹅群中每年散布着成千上万个卵，我们研究了（ii）鹅的巢密度，（iii）鹅的相对比例如何影响实验缓存的存活率。两种同胞鹅种，（iii）大约离开。一百万只鹅及其孵化后的幼龄，以及（iv）缓存地点的年龄。实验缓存的存活率与研究第一年的缓存站点的年龄有关（第二天和第一个月的缓存站点的缓存的18天周期分别为0.80和0.56）和第二天的鹅离开研究的年份（鹅筑巢期间和筑巢之后每18天分别为0.98和0.74）。这些结果表明，食物的丰富性和贮藏场所的恶化（例如，土壤覆盖的丧失和贮藏所的部分暴露）是影响我们研究场所贮藏所损失的重要因素。

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