Behavioural Ecology & Conservation Group, Biodiversity Research Centre, Earth and Life Institute, Université catholique de Louvain (UCL), Louvain-la-Neuve, Belgium.
J Insect Physiol. 2010 Sep;56(9):1275-83. doi: 10.1016/j.jinsphys.2010.04.009. Epub 2010 Apr 29.
In nature, ovipositing females may be subjected to multiple extrinsic and intrinsic environmental factors simultaneously. To adequately assess a species response to environmental conditions during oviposition it may therefore be necessary to consider the interaction between multiple intrinsic and extrinsic factors simultaneously. Using the butterfly, Pararge aegeria, this study examined the combined effects of extrinsic (temperature and flight) and intrinsic (body mass and age) factors on ovarian dynamics, egg provisioning and reproductive output, and explored how these effects subsequently influenced offspring fitness when egg-stage development occurred in a low humidity environment. Both temperature- and flight-mediated plasticity in female reproductive output was observed, and there were strong temperature by flight interaction effects for the traits oocyte size and egg mass. As females aged, mean daily fecundity differed across temperature treatments, but not across flight treatments. Overall, temperature had more pronounced effects on ovarian dynamics than flight. Flight mainly influenced egg mass via changes in relative water content. A mismatch between the physiological response of females to high temperature and the requirements of their offspring had a negative impact on offspring fitness via effects on egg hatching success.
在自然界中，产卵的雌性可能同时受到多种外在和内在环境因素的影响。因此，为了充分评估一个物种在产卵过程中对环境条件的反应，可能有必要同时考虑多种内在和外在因素之间的相互作用。本研究利用蝴蝶 Pararge aegeria，研究了外在因素（温度和飞行）和内在因素（体重和年龄）对卵巢动态、卵子供应和繁殖输出的综合影响，并探讨了当卵期在低湿度环境中发育时，这些影响如何随后影响后代的适应性。观察到了雌性生殖输出的温度和飞行介导的可塑性，并且在卵母细胞大小和卵质量方面存在强烈的温度与飞行的相互作用效应。随着雌性年龄的增长，在不同温度处理下的每日平均产卵量有所不同，但在不同飞行处理下则没有差异。总的来说，温度对卵巢动态的影响比飞行更为显著。飞行主要通过相对含水量的变化来影响卵质量。雌性对高温的生理反应与后代的需求不匹配，通过对卵孵化成功率的影响，对后代适应性产生了负面影响。
