Abstract
Global climate change has led to a warmer world, changing the migratory
and breeding behaviors of many species, and short-distance migrants may
benefit from climate change. With climate change leading to an
increasingly disordered climate, we show here that a disordered spring
climate disturbs the migration and breeding of a short-distance
anadromous fish. In 2020, on the Qinghai-Tibetan Plateau, an abnormally
low temperature in April delayed the migration rhythm ofGymnocypris przewalskii by nearly 10 days, while the gonadal
development rhythm of the breeding population was almost normal. The
phenology mismatch decreased the migrating populations by 30–70%,
reducing the larval flux by nearly 80%. This case reveals that for
short-distance migrants, different phenologies within the same species
respond to disordered climates differently, which leads to phenology
mismatches and then threatens the species. Along with increasing local
extreme weather and climate events, short-distance migrants need more
attention and conservation actions.