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Tropical fish are migrating south along Australia’s coast due to warming waters, with eDNA revealing hidden species movements.
Fish are moving into cooler waters along Australia’s east coast due to climate change, with tropical species increasingly appearing in temperate zones.
A new study combining traditional visual surveys and environmental DNA (eDNA) analysis from seawater samples across 2,000 kilometers of coastline revealed hidden migrations of species like surgeonfish, parrotfish, porcupinefish, and squirrelfish that visual methods often miss.
While visual surveys better detected temperate species, eDNA provided a more complete picture of biodiversity shifts, capturing cryptic, nocturnal, or rare fish.
The findings show that eDNA complements traditional methods, offering a powerful tool to track climate-driven changes in marine ecosystems.
Los peces tropicales están migrando hacia el sur a lo largo de la costa de Australia debido al calentamiento de las aguas, con el ADN electrónico revelando movimientos de especies ocultas.