Review of research trends and gaps in the biology of freshwater shrimps of the genus <i>Caridina</i> H. Milne Edwards, 1837 (Decapoda: Caridea: Atyidae)

Abstract We utilized the Scopus and Web of Science databases, along with the Biblioshiny package in R, to conduct a bibliometric analysis to analyse the gaps in studies on the species of the freshwater shrimp Caridina H. Milne Edwards, 1837. The Biblioshiny package maps the bibliographic materials into a graphical representation using input data downloaded from the respective databases. The analysis covered 1930 to 2024. By applying relevance filtering and adhering to PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analysis) guidelines, 475 articles were selected. The key research topics for highlighting advancements and gaps in research included amphidromy, biogeography, cryptic species, integrative taxonomy, climate change, and ornamental trade. The absence of climate change and trade from the bibliometric analysis strongly suggests a gap in the research. The study aims to provide valuable insights into strategic implications and regulatory considerations, offering guidance to policymakers in crafting effective policies for sustainability and conservation. It also aimed to serve as a resource for researchers, identifying gaps for further exploration and suggesting avenues for innovative research on Cardinia.