Genome size drives ecological breadth in Pomacentridae reef fishes

摘要: Abstract Genome size (GS) is known to vary widely among fishes. However, evolutionary drivers that shape this variation are largely unknown in Pomacentridae . GS information available for several species, which have adapted over time mainly reef environments. In the present study, we used comparative phylogenetic methods evaluate role of ecological variables driving 49 species family. We also aimed understand how evolved, evaluating five continuous character evolution models. found varied 1.98-fold, with C-values ranging from 0.68 pg ( Pomacentrus auriventris ) 1.35 pg (Chrysiptera hemicyanea ). Our analyses, based on mitochondrial and nuclear sequences, revealed diversification into two main clades occurred ~58 Mya, showing distinct trends. Character reconstruction values expansions retractions convergences parallelisms different lineages. a significant association between body proxies niche breadth (temperature salinity), suggesting larger genomes tend occupy wider breadth. Thus, may influence life histories fishes, independently their relationships.