Research news on meristics

Meristics, as a method in biological and ecological research, involves the quantitative assessment of countable anatomical structures or discrete morphological features to characterize individuals, populations, or species. It typically includes standardized counts of traits such as fin rays, scales, vertebrae, or leaf structures, and is often combined with morphometrics to enhance taxonomic resolution and population discrimination. Meristic methods require rigorous sampling protocols, repeatable counting criteria, and statistical analysis to account for intraspecific variation, developmental plasticity, and environmental influences. They are widely applied in systematics, stock identification, evolutionary studies, and monitoring of phenotypic responses to ecological or anthropogenic pressures.