干草除草对石猫雏鸟的影响

L. Pietrelli, Massimo Biondi, Patrizia Menegoni
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摘要

通过成鸟的觅食活动来描述和量化干草除草对雏石松鼠(Saxicola torquatus)的影响。对三对繁殖对(6 窝)进行了监测。报告了无脊椎动物分类群在石鸡雏鸟食物中的出现情况。刈割干草后,石鸡的采食频率立即发生变化(减少达 73%),几天后又恢复正常,甚至捕食不同的猎物。至少在有限的保护区内进行干草除草时,取食频率的降低似乎不会影响繁殖对的繁殖成功率。雏鸟的食物组成随着雏鸟年龄的增加而变化,蜘蛛和蚂蚁在最初几天有所增加。
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Impact of hay mowing on the Stonechat Saxicola torquatus nestling
The impact of hay mowing on nestling Stonechats Saxicola torquatus was describes and quantified through the feeding activity of adults. Three breeding pairs (6 broods) were monitored. Occurrence of invertebrate taxa in the diet of nestling Stonechats was reported. The feeding frequency differs immediately after hay mowing (reduction up to 73%) to go back up after a few days even hunting different prey. The reduction of the feeding frequency does not appear to have affected reproductive success for the breeding pairs at least when the hay mowing takes place in limited and protected areas. The diet composition change with increasing nestling age, spiders and ants increase during the first days.
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