Diet and nutritional status during early adult life have immediate and persistent effects on queen bumble bees.
Diet and nutritional status during early adult life have immediate and persistent effects on queen bumble bees.
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成年早期的饮食和营养状况对熊蜂王有直接和持久的影响。
DOI：
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发表时间：
2019
影响因子：
2.7
通讯作者：
Shalene Jha
中科院分区：
文献类型：
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作者：
S Hollis Woodard;Michelle A. Duennes;Kristal M Watrous;Shalene Jha
许多昆虫在发育程序化的时期隔离营养，它们在随后的生活史阶段代谢营养。在这些时期，未能储存足够的营养可能会对健康产生持久的影响。在这里，我们研究了一个关键的，但研究不足的营养储存期在蜂王大黄蜂：第一天的成年生活，这是其次是滞育期通常与冬季相吻合。我们实验性地控制花粉的有效性（脂肪和蛋白质的主要膳食来源）和人工花蜜的糖浓度（碳水化合物的主要来源），并检查了三个营养现象：（i）饮食对营养状况的影响，（ii）营养素螯合发生的时间尺度，以及（iii）营养素螯合的健身后果，特别是与整个生命周期的生存有关。我们发现的证据表明，花粉和花蜜饥饿对脂质储存产生负面影响，而花蜜糖浓度影响储存的碳水化合物。大部分的营养物质储存在成虫的前3天。在此期间，花粉中的营养物质似乎对早期生命阶段的生存更为关键，而花蜜中的营养物质对滞育和滞育后的生存更为重要。在我们的实验中，即使在滞育后提供花粉和相对较高（50%）的花蜜糖浓度，早期生活中不良饮食的负面影响仍然存在。基于这些发现，我们认为蚁后成年早期的营养环境对健康有直接和持久的影响。这些发现强调了研究阶段特定的营养限制对这一社会昆虫群体的生理和生活史特征的影响的重要性。此外，这些发现可能揭示了食物资源减少是如何导致野生大黄蜂种群减少的。
Many insects sequester nutrients during developmentally programmed periods, which they metabolize during subsequent life history stages. During these periods, failure to store adequate nutrients can have persistent effects on fitness. Here, we examined a critical but under-studied nutrient storage period in queen bumble bees: the first days of adult life, which are followed by a diapause period typically coinciding with winter. We experimentally manipulated availability of pollen (the primary dietary source of lipids and protein) and the sugar concentration of artificial nectar (the primary source of carbohydrates) for laboratory-reared queens during this period and examined three nutritional phenomena: (i) diet impacts on nutritional status, (ii) the timescale upon which nutrient sequestration occurs and (iii) the fitness consequences of nutrient sequestration, specifically related to survival across the life cycle. We found evidence that pollen and nectar starvation negatively impact lipid storage, whereas nectar sugar concentration impacts stored carbohydrates. The majority of nutrients were stored during the first ~ 3 days of adult life. Nutrients derived from pollen during this period appear to be more critical for surviving earlier life stages, whereas nutrients sequestered from nectar become more important for surviving the diapause and post-diapause periods. Negative impacts of a poor diet during early life persisted in our experiment, even when pollen and a relatively high (50%) nectar sugar concentration were provided post-diapause. Based on these findings, we posit that the nutritional environment during the early adult life of queens has both immediate and persistent impacts on fitness. These findings underscore the importance of examining effects of stage-specific nutritional limitations on physiology and life history traits in this social insect group. Moreover, the findings may shed light on how declining food resources are contributing to the decline of wild bumble bee populations.