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首页> 外文期刊>Canadian Journal of Zoology >Influence of predator odour on the feeding behaviour of the root vole(Microtus oeconomus Pallas, 1776)
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Influence of predator odour on the feeding behaviour of the root vole(Microtus oeconomus Pallas, 1776)

机译：捕食者气味对根田鼠摄食行为的影响（Microtus oeconomus Pallas，1776）

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摘要

An experiment carried out under laboratory conditions addressed the influence exerted by the odour of a stoat, Mustela erminea Linnaeus, 1758, on the feeding behaviour of a root vole, Microtus oeconomus Pallas, 1776. Specifically, the impact of the odour on the chewing of rowan (Soi-bus aucuparia) shoots and consumption of food pellets by voles that were not sexually active was observed over a 14-day period. The floors of cages with individuals from the experimental group were sprinkled daily with a distilled-water rinse from a glass clamber in which a stoat had been confined, while cages holding control individuals were sprinkled with distilled water only. The uptake of food was monitored daily by checking the degree to which shoots had been chewed, as well as the amount of food pellets consumed. Stoat odour caused a significant reduction in chewing of the shoots but did not affect the amount of food pellets eaten. There was no significant influence of the scent on body mass, which suggests that the assimilation of food was probably the same for voles in the experimental and control groups. Long-term exposure to stoat scent was not associated with changes in food consumption over time, which suggests that the voles had not become habituated to the presence of the odour over the 2-week period. It would therefore seem that the stoat scent affected the specific feeding behaviour of the voles rather than their overall consumption level.
机译：在实验室条件下进行的一项实验解决了沙哑鼬（Mustela erminea Linnaeus，1758）的气味对根田鼠（Microtus oeconomus Pallas）摄食行为的影响。具体而言，气味对咀嚼动物的影响在14天的时间内观察到罗文（Soi-bus aucuparia）芽和田鼠食用没有性活动的食物颗粒。每天从实验组的笼子地板上撒上蒸馏水，冲洗液是从玻璃制的隔板中倒出的，隔板已被封闭，而对照组的笼子只撒了蒸馏水。每天通过检查咀嚼物的咀嚼程度以及所消耗食物颗粒的量来监控食物的摄取。脚臭味引起芽的咀嚼明显减少，但不影响所食用食物颗粒的量。气味对体重没有显着影响，这表明实验组和对照组的田鼠对食物的吸收可能相同。长期暴露于鱼腥味与随时间变化的食物消耗量无关，这表明在两周的时间内，田鼠并没有习惯于有气味存在。因此看来，鼠尾草的气味会影响田鼠的特定进食行为，而不是其总体消费水平。

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