Retrospection of Research on Dragonfly and Damselfly (Odonata) During Past Fifty Years: A Bibliometric Review.

Dragonflies and damselflies (Odonata) play important roles in ecology and are used as model organisms in evolutionary studies, but a comprehensive overview of Odonata research has been lacking. Here, we conducted a bibliometric analysis of Odonata literature from 1974 to 2023 using Web of Science (Science Citation Index Expanded) data and CiteSpace software. We analyzed over 5000 publications to identify major contributors, research hotspots, and emerging trends in this field. The results show that annual research output increased greatly over time, with the United States being the most prolific country. Co-citation and keyword analyses revealed several dominant research themes, including life history and evolution, flight mechanics and predatory behavior, habitat and community ecology, biodiversity and conservation under environmental change, molecular phylogenetics, reproductive biology, and dragonfly wing mechanics. Citation burst analysis highlighted emerging fronts such as global Odonata species diversity and conservation efforts, advanced molecular phylogenetic studies, the use of dragonflies and damselflies as model species and bioindicators, and new investigations into wing kinematics. In conclusion, this study provides a quantitative retrospective of five decades of Odonata research, offering insights into the field's development and guiding future research directions.