No evidence for direct thermal carryover effects on starvation tolerance in the obligate blood-feeder, Glossina morsitans morsitans.
No evidence for direct thermal carryover effects on starvation tolerance in the obligate blood-feeder, Glossina morsitans morsitans.
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DOI：
10.1002/ece3.10652
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发表时间：
2023-10
影响因子：
2.6
通讯作者：
English, Sinead
中科院分区：
文献类型：
--
作者：
Weaving, Hester;Lord, Jennifer S.;Haines, Lee;English, Sinead
发育过程中的热应激可以使动物在以后的生活中更好地科普类似的条件。或者，热应激的负面影响可以持续整个生命阶段，并导致质量较差的成年人（负面遗留效应）。由于气候变化导致平均气温升高，需要在不同类群中证明这种影响。使用Glossina morsitans morsitans，一种采采蝇和锥虫病的载体，我们询问（i）适应性发育可塑性是否允许果蝇在蛹和成虫温度匹配时在食物剥夺下存活更长时间;或（ii）发育期间的温度应激持续到成年，导致更大的死亡风险。我们没有发现蛹和成虫温度相匹配在提高饥饿耐受性方面的任何优势，也没有观察到直接的负传递效应。有一些间接的携带效应的证据-高蛹温度产生的苍蝇较低的体重，这反过来又导致更大的饥饿风险。然而，到目前为止，成年温度对饥饿耐受性的影响最大：苍蝇在31°C下死亡的速度比经历25°C的快60%，因此将存活时间从中位数8（四分位数范围（IQR）7-9）减少到5（IQR 5-5.25）天。这突出了生命阶段之间的温度敏感性差异，因为蛹温度对饥饿耐受性没有直接影响。因此，对于撒哈拉以南非洲的一些地区，气候变化可能会导致新出现的采采蝇在寻找第一顿血餐时死亡率更高。这项研究加强了现有的证据，即对温度的反应是生命阶段特异性的，可塑性在缓冲气候变化影响方面的能力可能有限。我们发现，成年温度对舌蝇的饥饿耐受力有最明显的影响。蛹的温度没有直接的延续效应，表明对温度的饥饿反应具有生命阶段特异性。因此，气候变化导致的气温上升可能会对新出现的成年采采蝇产生最大的影响，迫使苍蝇更快地找到它们的第一顿血餐。图片来源：Lee Haines
Thermal stress during development can prime animals to cope better with similar conditions in later life. Alternatively, negative effects of thermal stress can persist across life stages and result in poorer quality adults (negative carryover effects). As mean temperatures increase due to climate change, evidence for such effects across diverse taxa is required. Using Glossina morsitans morsitans, a species of tsetse fly and vector of trypanosomiasis, we asked whether (i) adaptive developmental plasticity allows flies to survive for longer under food deprivation when pupal and adult temperatures are matched; or (ii) temperature stress during development persists into adulthood, resulting in a greater risk of death. We did not find any advantage of matched pupal and adult temperature in terms of improved starvation tolerance, and no direct negative carryover effects were observed. There was some evidence for indirect carryover effects—high pupal temperature produced flies of lower body mass, which, in turn, resulted in greater starvation risk. However, adult temperature had the largest impact on starvation tolerance by far: flies died 60% faster at 31°C than those experiencing 25°C, consequently reducing survival time from a median of 8 (interquartile range (IQR) 7–9) to 5 (IQR 5–5.25) days. This highlights differences in temperature sensitivity between life stages, as there was no direct effect of pupal temperature on starvation tolerance. Therefore, for some regions of sub‐Saharan Africa, climate change may result in a higher mortality rate in emerging tsetse while they search for their first blood meal. This study reinforces existing evidence that responses to temperature are life stage specific and that plasticity may have limited capacity to buffer the effects of climate change. We find that adult temperature had the most pronounced effect on starvation tolerance in tsetse. There were no direct carryover effects of pupal temperature, showing that starvation responses to temperature are life‐stage specific. Therefore, rising temperatures due to climate change are likely to exert the greatest effect on emerging adult tsetse, forcing flies to locate their first blood meal more rapidly. Photo credit: Lee Haines.
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DOI：
10.1016/0035-9203(82)90142-0
发表时间：
1982-01-01
影响因子：
2.2
作者：
GINGRICH, JB;WARD, RA;ESSER, KM
通讯作者：
ESSER, KM
影响因子：
4.8
作者：
Gergs, Andre;Jager, Tjalling
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Jager, Tjalling
生存分析第二部分：多元数据分析 - 概念和方法简介。
影响因子：
8.8
作者：
通讯作者：
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影响因子：
1.5
作者：
Bauerfeind, Stephanie S.;Kellermann, Vanessa;Fischer, Klaus
通讯作者：
Fischer, Klaus
DOI：
10.1017/s0007485300054948
发表时间：
1960-01-01
期刊：
BULL ENT RES
影响因子：
--
作者：
BURSELL, E.;GLASGOW, J. P.
通讯作者：
GLASGOW, J. P.