review · Heliyon
A global bibliometric mapping of catfish research reveals that publication volumes have risen markedly since 2016. Four nations, the United States, Brazil, China, and India, collectively generate approximately 67 percent of all literature on the subject. Analysis of publication trends highlights 28 distinct article clusters, spanning topics such as yellow catfish, African catfish, channel catfish, the Rio Sao Francisco basin, pectoral girdle anatomy, temperature-mediated dynamics, and the bacterial pathogen Edwardsiella ictaluri. In addition, evaluation of research terms uncovers dominant keywords led by channel catfish and responses, along with seven major thematic groupings. These keyword groupings focus on new species, growth performance, heavy metal exposure, gonadotropin-releasing hormones, essential oils, and olfactory receptors, providing an overarching perspective on historical developments and collaborative networks across worldwide catfish investigations.
Understanding global research trends helps research directors, funders, and aquaculture specialists identify active areas of study and geographic leadership. Mapping major international contributors and emerging thematic clusters, from fish physiology to disease management, clarifies how catfish science is evolving, which supports better coordination of collaborative research priorities and future funding allocations in freshwater biology and aquaculture.
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This study aims to elucidate the evolution of catfish research publications over recent decades, identify emerging research clusters, examine keyword patterns, determine major contributors (including authors, organizations, and funding agencies), and analyze their collaborative networks and citation bursts on a global scale. The USA, Brazil, China, and India collectively contribute approximately 67% of the total catfish research publications, with a marked increase in prevalence since 2016. The most frequently occurring and dominant keywords are “channel catfish” and “responses,” respectively. Intriguingly, our findings reveal 28 distinct article clusters, with prominent clusters including “yellow catfish,” “channel catfish”, “pectoral girdle,” “African catfish”, “Rio Sao Francisco basin,” “Edwardsiella ictaluri,” and “temperature mediated”. Concurrently, keyword clustering generates seven main clusters: “new species”, “growth performance”, “heavy metal”, “gonadotropin-releasing”, “essential oil”, and “olfactory receptor”. This study further anticipates future research directions, offering fresh perspectives on the catfish literature landscape. To the best of our knowledge, this is the first article to conduct a comprehensive mapping review of catfish research publications worldwide.
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DOI: 10.1016/j.heliyon.2023.e20081
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