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首页> 外文期刊>Wildlife Research >Trapping efficiency for foxes (Vulpes vulpes) in central New South Wales: age and sex biases and the effects of reduced fox abundance
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Trapping efficiency for foxes (Vulpes vulpes) in central New South Wales: age and sex biases and the effects of reduced fox abundance

机译：新南威尔士中部狐狸的诱捕效率：年龄和性别偏见以及狐狸数量减少的影响

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摘要

A total of 276 red foxes (Vulpes vulpes) was captured over 40 597 trap-nights during 1994-96 at three separate sites in central New South Wales, resulting in an overall trapping efficiency of one fox per 147 trap-nights. Trapping using multiple trap sets placed at carcases was 3.2 times more efficient than trapping using single trap sets. During 1994-95, when two of the sites suffered a severe drought, fox abundance declined to less than 0.2 foxes km(-1) of spotlight transect; trapping efficiency at those sites also declined, to an average of one fox per 315 trap-nights. Mean trapping efficiency for non-drought periods was one fox per 135 trap-nights, 2.3 times more efficient than during the drought period. In 1995 and 1996, 353 foxes were shot in areas adjacent to each site. This gave the opportunity to compare sex and age biases between the trapped and shot samples: the ratio of males to females was significantly higher in the trapped sample than in the shot sample, and there was also a significantly higher ratio of adults to juveniles in the trapped sample than in the shot sample. [References: 27]
机译：1994-96年期间，在新南威尔士州中部的三个不同地点共捕获了276只狐狸（Vulpes vulpes），共捕捕40夜，因此，每147个捕鼠夜的总捕获效率为一只狐狸。使用放置在尸体上的多个诱集器进行诱捕的效率比使用单个诱集器进行诱捕的效率高3.2倍。在1994-95年期间，当两个地点遭受严重干旱时，狐狸的丰度下降到聚光灯样线的不足0.2狐狸km（-1）;这些地点的诱捕效率也下降了，平均每315个诱捕之夜只有一只狐狸。非干旱时期的平均捕集效率是每135个诱捕之夜1狐狸，是干旱时期的2.3倍。在1995年和1996年，在每个地点的附近地区射杀了353只狐狸。这使我们有机会比较被捕和被捕样本之间的性别和年龄偏见：被捕样本中的男性与女性比率明显高于被捕样本，并且在被捕样本中，成年与未成年人的比率也明显更高。捕获的样品比注射样品中的样品高。 [参考：27]

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