过度放牧和降雨量变化导致的种子丰度变化引发了一种小型收割蚁的食性变化

IF 2 3区 农林科学 Q2 ENTOMOLOGY Ecological Entomology Pub Date : 2023-11-07 DOI:10.1111/een.13293
Lucía Vullo, Javier Lopez de Casenave, María Florencia Miretti, Ana Laura Cao, Luis Marone, Rodrigo G. Pol
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引用次数: 0

摘要

一些物种受到全球变化的严重影响,而另一些物种可以在相同的环境下生存甚至茁壮成长。行为更灵活的物种比行为更刻板的物种能更好地应对环境变化;因此,了解行为灵活性的极限对于预测它们对全球变化的反应至关重要。放牧是沙漠中最广泛的土地利用方式,也是植被变化的主要驱动力。反过来,不可预测和零星的降雨会增加放牧的负面影响。由于气候变化,这两个因素的相互作用在今天显得更为重要。在蒙特沙漠中部,放牧和降雨的年际变化减少了食草动物优先食用的种子的丰度。在那里,我们分析了连续四年在不同放牧压力的地点,专业收获蚁的饮食灵活性对种子可用性年际变化的响应。随着种子可得性的逐年下降,麻豆蚜通过增加其他食物和减少种子消耗来扩大其饮食,但这种反应在不同的放牧条件下没有差异,可能是因为区域尺度上种子丰度的急剧减少模糊了放牧和未放牧地点之间的差异。我们的研究结果强调了一个特殊物种的潜在饮食灵活性,在不利的条件下,可以改变它的饮食。未来的研究应该调查在资源匮乏的情况下,棘棘棘虫的饮食变化是否会对其生存产生负面影响,就像之前报道的对其他食草物种的影响一样。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

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Changes in seed abundance driven by overgrazing and rainfall variability trigger variations in the diet of a small harvester ant

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来源期刊
Ecological Entomology
Ecological Entomology 生物-昆虫学
CiteScore
4.90
自引率
4.50%
发文量
94
审稿时长
3 months
期刊介绍: Ecological Entomology publishes top-quality original research on the ecology of insects and related invertebrate taxa. Our aim is to publish papers that will be of considerable interest to the wide community of ecologists who are motivated by ecological or evolutionary theory. The suitability of a manuscript will usually be assessed within 5 days. We publish full-length Original Articles as well as Reviews, Short Communications, Methods and Natural History papers. In Original Articles, we greatly prefer papers that test specific hypotheses and which have a high degree of novelty. All categories aim for innovative contributions that advance the subject of ecological entomology.
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