A Comparative Study of Life History Traits in C. briggsae and C. elegans

The nematodes C. elegans and C. briggsae are key models for genetic studies. Despite their overall similar morphology, these two species exhibit notable differences. We used the isolates from tropical ( AF16 and QX1410 ) and temperate ( HK104 and VX34 ) regions to characterize the life history traits of C. briggsae . Our findings reveal significant variations in body dimensions, movement patterns, utse morphology, and lipid contents across isolates, highlighting species-level distinctions that further establish C. briggsae as a valuable comparative model for genetic research.