Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/gcb.15294 |
Mountain stoneflies may tolerate warming streams: Evidence from organismal physiology and gene expression | |
Scott Hotaling; Alisha A. Shah; Kerry L. McGowan; Lusha M. Tronstad; J. Joseph Giersch; Debra S. Finn; H. Arthur Woods; Michael E. Dillon; Joanna L. Kelley | |
2020-08-18 | |
发表期刊 | Global Change Biology
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出版年 | 2020 |
英文摘要 | Rapid glacier recession is altering the physical conditions of headwater streams. Stream temperatures are predicted to rise and become increasingly variable, putting entire meltwater‐associated biological communities at risk of extinction. Thus, there is a pressing need to understand how thermal stress affects mountain stream insects, particularly where glaciers are likely to vanish on contemporary timescales. In this study, we measured the critical thermal maximum (CTMAX) of stonefly nymphs representing multiple species and a range of thermal regimes in the high Rocky Mountains, USA. We then collected RNA‐sequencing data to assess how organismal thermal stress translated to the cellular level. Our focal species included the meltwater stonefly, Lednia tumana, which was recently listed under the U.S. Endangered Species Act due to climate‐induced habitat loss. For all study species, critical thermal maxima (CTMAX > 20°C) far exceeded the stream temperatures mountain stoneflies experience (<10°C). Moreover, while evidence for a cellular stress response was present, we also observed constitutive expression of genes encoding proteins known to underlie thermal stress (i.e., heat shock proteins) even at low temperatures that reflected natural conditions. We show that high‐elevation aquatic insects may not be physiologically threatened by short‐term exposure to warm temperatures and that longer‐term physiological responses or biotic factors (e.g., competition) may better explain their extreme distributions. |
领域 | 气候变化 ; 资源环境 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/291107 |
专题 | 气候变化 资源环境科学 |
推荐引用方式 GB/T 7714 | Scott Hotaling,Alisha A. Shah,Kerry L. McGowan,et al. Mountain stoneflies may tolerate warming streams: Evidence from organismal physiology and gene expression[J]. Global Change Biology,2020. |
APA | Scott Hotaling.,Alisha A. Shah.,Kerry L. McGowan.,Lusha M. Tronstad.,J. Joseph Giersch.,...&Joanna L. Kelley.(2020).Mountain stoneflies may tolerate warming streams: Evidence from organismal physiology and gene expression.Global Change Biology. |
MLA | Scott Hotaling,et al."Mountain stoneflies may tolerate warming streams: Evidence from organismal physiology and gene expression".Global Change Biology (2020). |
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