Experimental increases in temperature mean and variance alter reproductive behaviours in the dung beetle Phanaeus vindex
Experimental increases in temperature mean and variance alter reproductive behaviours in the dung beetle Phanaeus vindex
复制标题
温度均值和方差的实验增加改变了粪甲虫 Phanaeus vindex 的繁殖行为
DOI：
10.1098/rsbl.2022.0109
复制
发表时间：
2022
期刊：
影响因子：
3.3
通讯作者：
Sheldon, Kimberly S.
中科院分区：
文献类型：
--
作者：
Kirkpatrick, William H.;Sheldon, Kimberly S.
温度对昆虫的发育有着深刻的影响，但生殖行为的可塑性可能介导温度变化对早期生命阶段的影响。很少有研究探讨成年人行为可塑性的潜力，以缓冲后代从温暖，更多变的温度与气候变化有关。我们使用了现场操作，以检查是否粪甲虫vindexalterates的繁殖行为，以应对温度的变化，以及行为转变是否保护后代免受温度变化。蜣螂在埋在地下的粪便做成的育卵球里产卵。卵球深度影响后代的温度体验，并对发育产生影响。我们将成年女性在控制或温室处理，同时增加温度的平均值和方差。我们发现，温室处理中的雌性产生了更多的育球，这些育球比对照组更小，埋得更深，这表明育球数量或埋得更深可能会以育球大小为代价，这可能会影响后代的营养。尽管被埋得更深，从温室处理育雏球经历了温暖的平均温度，但类似的幅度的温度波动相对于控制。我们的研究结果表明，成年人的行为可能会部分缓冲温度变化对发育中的后代的影响。
Temperature profoundly impacts insect development, but plasticity of reproductive behaviours may mediate the impacts of temperature change on earlier life stages. Few studies have examined the potential for adult behavioural plasticity to buffer offspring from the warmer, more variable temperatures associated with climate change. We used a field manipulation to examine whether the dung beetlePhanaeus vindexalters breeding behaviours in response to temperature changes and whether behavioural shifts protect offspring from temperature changes. Dung beetles lay eggs inside brood balls made of dung that are buried underground. Brood ball depth impacts the temperatures offspring experience with consequences for development. We placed adult females in either control or greenhouse treatments that simultaneously increased temperature mean and variance. We found that females in greenhouse treatments produced more brood balls that were smaller and buried deeper than controls, suggesting brood ball number or burial depth may come at a cost to brood ball size, which can impact offspring nutrition. Despite being buried deeper, brood balls from the greenhouse treatment experienced warmer mean temperatures but similar amplitudes of temperature fluctuation relative to controls. Our findings suggest adult behaviours may partially buffer developing offspring from temperature changes.