Schneider David, Ramos Alejandra G, Córdoba-Aguilar Alex
Departamento de Ecología Evolutiva Instituto de Ecología Universidad Nacional Autónoma de México México Mexico.
Facultad de Ciencias Universidad Autónoma de Baja California Ensenada Mexico.
Ecol Evol. 2020 Oct 27;10(23):12893-12909. doi: 10.1002/ece3.6847. eCollection 2020 Dec.
Long-term multigenerational experimental simulations of climate change on insect pests of economically and socially important crops are crucial to anticipate challenges for feeding humanity in the not-so-far future. Mexican bean weevil , is a worldwide pest that attacks the common bean seeds, in crops and storage. We designed a long term (i.e., over 10 generations), experimental simulation of climate change by increasing temperature and CO air concentration in controlled conditions according to model predictions for 2100. Higher temperature and CO concentrations favored pest's egg-to-adult development survival, even at high female fecundity. It also induced a reduction of fat storage and increase of protein content but did not alter body size. After 10 generations of simulation, genetic adaptation was detected for total lipid content only, however, other traits showed signs of such process. Future experimental designs and methods similar to ours, are key for studying long-term effects of climate change through multigenerational experimental designs.
对经济和社会重要作物的害虫进行长期多代气候变化实验模拟，对于预测在不久的将来养活人类所面临的挑战至关重要。墨西哥豆象是一种世界性害虫，会在作物和储存过程中侵害普通豆种子。我们根据对2100年的模型预测，在可控条件下通过升高温度和二氧化碳浓度，设计了一项长期（即超过10代）的气候变化实验模拟。更高的温度和二氧化碳浓度有利于害虫从卵到成虫的发育存活，即使在雌性高繁殖力的情况下也是如此。它还导致脂肪储存减少和蛋白质含量增加，但并未改变体型。经过10代模拟后，仅检测到总脂质含量的遗传适应，然而，其他性状也显示出这种过程的迹象。未来与我们类似的实验设计和方法，对于通过多代实验设计研究气候变化的长期影响至关重要。
