Transgenerational phenotypic plasticity and rapid adaptation to multiple global change drivers, and the fate of global biodiversity patterns

跨代表型可塑性和对多种全球变化驱动因素的快速适应，以及全球生物多样性模式的命运

• 批准号: RGPIN-2015-06500
• 负责人: Calosi, Piero
• 金额: $ 2.04万
• 依托单位: Université du Québec à Rimouski
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2019
• 资助国家: 加拿大
• 起止时间: 2019-01-01 至 2020-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=682927
• 关键词: Transgenerational; phenotypic; plasticity; rapid; adaptation

The Intergovernmental Panel on Climate Change has recently confirmed that the rate and intensity at which global climate change (GCC) is occurring are a serious threat to biodiversity. A solid understanding of the mechanisms by which animal species can cope with GCC in order to reduce their risk of extinction is paramount. Importantly, we must consider that GCC involves the simultaneous alteration of several factors (e.g. temperature, CO2, O2) which may differently impact the various developmental stages of a species. As most studies to date have looked at the plastic responses to short-term exposure to single stressors of a single stage of development of single species within a single generation, our current knowledge in this area limits our capacity to produce accurate and reliable predictions. Most importantly, understanding the mechanisms by which species can be rescued from extinction is essential to inform policy makers and managers in making decisions regarding the preservation of local and global diversity, the sustainable usage of natural resources and the socio-economic adaptation of communities and entire countries. Consequently, to help overcoming the paucity of relevant information in this research area, whilst addressing some fundamental questions in physiological diversity, I will characterise organisms scope for transgenerational plasticity (e.g. the protection offsprings obtained from parents being exposed to a stressor) and their capacity for rapid adaptation to multiple simultaneous climate drivers.****The aim of my project is that to answer the following fundamental questions: (i) can transgenerational plasticity prevent species extinction during GCC? (ii) can adaptation to GCC occur rapidly enough to rescue species from extinction? (iii) are rare species less capable for plastic and adaptive responses under GCCwhen compared to their common relatives? (iv) are more complex species less capable for plastic and adaptive responses under GCC when compared to less complex ones (i.e. protists vs. basal multicellular spp vs. complex multicellular spp)? (v) what is the fate of global biodiversity in the face of GCC?****I propose to utilise a quantitative genetic approach with laboratory selection experiments and clonal lines with different combinations of temperature, CO2 and O2 using a quantitative genetic approach. Stage-specific physiological (e.g. metabolic rate, thermal limits) and life-history traits (survival, growth, fecundity) will be measured at each generation or within clonal lines to determine the direction and intensity of plastic and adaptive responses to answer questions (i-iv). Finally complementary modelling approaches will be used to provide a much-needed synthesis and enable us to produce generalisation and broad, but accurate, predictions on the fate of biodiversity globally (v).**

政府间气候变化专门委员会最近确认，全球气候变化的速度和强度对生物多样性构成严重威胁。对动物物种科普海湾合作委员会的机制的深入了解，以减少其灭绝的风险是至关重要的。重要的是，我们必须考虑到GCC涉及几个因素（例如温度，CO2，O2）的同时改变，这些因素可能会对物种的各个发育阶段产生不同的影响。由于迄今为止的大多数研究都着眼于对单一物种在一代人内单一发育阶段的单一压力源的短期暴露的塑性反应，我们目前在这一领域的知识限制了我们做出准确可靠预测的能力。最重要的是，了解拯救物种免于灭绝的机制，对于决策者和管理人员就保护地方和全球多样性、可持续利用自然资源以及社区和整个国家的社会经济适应作出决定至关重要。因此，为了帮助克服这一研究领域相关信息的缺乏，同时解决生理多样性中的一些基本问题，我将探讨生物体跨代可塑性的范围（例如，从暴露于压力源的父母那里获得的保护后代）及其快速适应多个同时发生的气候驱动因素的能力。我的项目的目的是回答以下基本问题：（i）跨代可塑性能否防止物种灭绝在海湾合作委员会？(ii)对海湾合作委员会的适应能否迅速地发生，足以拯救物种免于灭绝？(iii)稀有物种在GCC下的可塑性和适应性反应能力是否低于它们的普通亲戚？(iv)与不太复杂的物种相比，更复杂的物种在海湾合作委员会下的可塑性和适应性反应能力较低（即原生生物与基础多细胞物种与复杂多细胞物种）？ (v)面对海湾合作委员会，全球生物多样性的命运如何？*我建议利用定量遗传方法与实验室选择实验和克隆系与不同的温度，CO2和O2的组合，使用定量遗传方法。将在每一代或克隆系内测量阶段特异性生理（例如代谢率、热限制）和生活史性状（存活、生长、繁殖力），以确定可塑性和适应性反应的方向和强度，以回答问题（i-iv）。最后，补充建模方法将用于提供急需的综合，使我们能够对全球生物多样性的命运进行概括和广泛但准确的预测（v）。