Regulation of water and macronutrients by the Australian plague locust, Chortoicetes terminifera
Regulation of water and macronutrients by the Australian plague locust, Chortoicetes terminifera
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DOI：
10.1016/j.jinsphys.2014.06.011
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发表时间：
2014-10-01
影响因子：
2.2
通讯作者：
Simpson, Stephen J.
中科院分区：
文献类型：
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作者：
Clissold, Fiona J.;Kertesz, Helena;Simpson, Stephen J.
当综合考虑多种营养素的摄入量时，可以更好地了解动物的营养结果。对于许多草食性昆虫来说，对蛋白质和碳水化合物的需求以及当这些营养素的含量和比例低于最佳水平时对发育、生长和健康的影响是众所周知的。水也是生命所必需的，众所周知，草食性昆虫会主动摄取游离水，具有控制口渴的生理机制，如果饮食中水过多或不足，就会遭受健康后果。由于草食性昆虫被认为从叶子中获取大部分水分，而叶子的蛋白质、碳水化合物和水分含量各不相同，因此我们研究了澳大利亚瘟疫蝗虫 Chortoicetes terminifera 是否可以选择补充食物来实现这三个营养维度的目标摄入量。蝗虫通过非随机地从不同的补充食物组合中进食，表现出了对蛋白质、碳水化合物和水的选择行为。摄入的 P:C:H2O 比例为 1:1.13:13.2 或 1(P + C):6.2 H2O。鉴于蝗虫强烈调节水的摄入量及其作为重要资源的重要性，我们建议未来的研究在评估草食性昆虫宿主选择和觅食决策时考虑水、蛋白质和碳水化合物的单一影响和相互作用。皇冠版权所有 (C) 2014 由 Elsevier Ltd 出版。保留所有权利。
Nutritional outcomes for animals are best understood when the intake of multiple nutrients are considered together. The requirements for protein and carbohydrate and the consequences for development, growth and fitness when confined to sub-optimal amounts and ratios of these nutrients are well known for many herbivorous insects. Water is also essential for life, and it is known that herbivorous insects will actively ingest free water, have physiological mechanisms controlling thirst, and suffer fitness consequences if water is excessive or deficient in the diet. As herbivorous insects are thought to obtain the majority of their water from foliage, which can vary in protein, carbohydrate and water content, we investigated if the Australian plague locust, Chortoicetes terminifera, can select among complementary foods to attain a target intake across these three nutrient dimensions. Locusts demonstrated selection behaviour for protein, carbohydrate and water by eating non-randomly from different combinations of complementary foods. A ratio of P:C:H2O of 1:1.13:13.2 or 1(P + C): 6.2 H2O was ingested. Given that locusts strongly regulate water intake, and its importance as an essential resource, we suggest future studies consider the single and interactive influences of water, protein and carbohydrate, when evaluating herbivorous insect host choice and foraging decisions. Crown Copyright (C) 2014 Published by Elsevier Ltd. All rights reserved.