Jaguar genetic health depends on connectivity between populations across their fragmented range, with isolated populations facing inbreeding depression that reduces welfare and survival fitness.
Population-level genetics directly affects individual welfare through the physiological consequences of inbreeding: reduced immune function, increased susceptibility to disease, reproductive failure, and developmental abnormalities. Jaguars in isolated forest fragments face these inbreeding costs alongside the direct welfare harms of fragmented habitat - more roads to cross, less prey, more human contact. Maintaining connectivity corridors is therefore a welfare intervention at population scale, preventing the gradual accumulation of fitness costs that characterize isolated small populations.