abstract
- 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.