Life history traits in microarthropods: Evidence for a soil animal economics spectrum

作者：Jing‐Zhong Lu, Tobias Pfingstl, Robert R. Junker, Mark Maraun, Amandine Erktan, Stefan Scheu · 发表于：Geoderma · 年份：2025 · DOI：10.1016/j.geoderma.2025.117206 · 被引用次数：12 · 研究领域：Insect and Arachnid Ecology and Behavior、Study of Mite Species、Animal Ecology and Behavior Studies

• The life history traits of microarthropods were compared with their body size. • The trait space revealed a microarthropod economics spectrum. • Life history differentiation between Oribatida and Collembola explains their coexistence. Evolution optimizes the performance of living organisms through budgeting of limited resources, leading to life-history trade-offs. Many life-history traits are related to body size with larger species typically exhibiting a slower pace of life and lower fecundity. However, soil-living organisms may exhibit size-independent life-history strategies due to habitat space constraints, but this has never been tested. Here, we synthesize life-history traits in springtails (Insecta: Collembola) and mites (Acari: Oribatida, Astigmata, Mesostigmata), the most abundant microarthropods worldwide, living mainly in litter and the pore space of soil. We related life-history traits to body size and individual metabolic rate, and showed that life-history traits of soil microarthropods display a trade-off between lifespan and reproductive rate, spanning a continuum from fast to slow life-history strategies. Oribatida exhibit remarkably slow life-histories and long lifespans with lower reproductive rates than Collembola, Astigmata and Mesostigmata. Despite fresh body mass of soil microarthropods varying by three orders of magnitude, fast and slow life-history strategies occurred in all size classes suggesting largely size-independent life-history strategies. Ov...