Feng Lichao, Chang Liang, Zhang Shaoqing, Zhu Xinyu, Adl Sina, Wu Donghui
College of Earth Sciences, Jilin University, Changchun 130012, China.
Department of Plant Sciences, Jilin Agricultural Science and Technology College, Jilin 132101, China.
Insects. 2019 Mar 7;10(3):67. doi: 10.3390/insects10030067.
Collembola display a variety of feeding habits, and prey on many types of food at different trophic levels in the soil. In most cases, their feeding selections are widely varied. In the interest of the food preferences of , we attempted to confirm how the Collembola utilize food when feeding on carrion (unusual sources). Four different soil animals (with different stable isotope values and increasing trophic levels) were used to examine whether collembolans can use dead insects as a food resource in specific manners, depending on food preference. Our results demonstrated that the food preference of a collembolan changed significantly after feeding on insects with different feeding habits for 60 days. We found that stable isotope values (δC) of approached those of the food sources. A large proportion of the diet (more than 50%) should directly consist of insect body parts, with the remainder consisting of indirectly used, mixed microorganisms naturally growing on animal food, such as fungi ( sp., sp., sp., and sp.) and bacteria ( sp1. and sp2.). Based on this research, the food preference of collembolans is more focused on carcasses (dead insect bodies) than microorganisms during the animal-food decomposition process.
弹尾目昆虫具有多种取食习性，在土壤中不同营养级捕食多种类型的食物。在大多数情况下，它们的食物选择差异很大。为了了解弹尾目昆虫的食物偏好，我们试图确定弹尾目昆虫在取食腐肉（不寻常的食物来源）时是如何利用食物的。我们使用了四种不同的土壤动物（具有不同的稳定同位素值且营养级递增）来研究弹尾目昆虫是否能够根据食物偏好以特定方式将死昆虫作为食物资源。我们的结果表明，弹尾目昆虫在以具有不同取食习性的昆虫为食60天后，其食物偏好发生了显著变化。我们发现其稳定同位素值（δC）接近食物来源的稳定同位素值。大部分食物（超过50%）应直接由昆虫身体部分组成，其余部分由在动物食物上自然生长的间接利用的混合微生物组成，如真菌（[具体真菌种类1]、[具体真菌种类2]、[具体真菌种类3]和[具体真菌种类4]）和细菌（[具体细菌种类1]和[具体细菌种类2]）。基于这项研究，在动物食物分解过程中，弹尾目昆虫的食物偏好更侧重于尸体（死昆虫身体）而非微生物。
