How do amphibians primarily exchange gases in their aquatic larval stage?

In their aquatic larval stage, amphibians primarily exchange gases through gills. This adaptation is crucial for their survival in water, as gills allow them to efficiently extract oxygen from their aquatic environment. Unlike adult amphibians, which typically transition to lung-based respiration as they develop and spend more time on land, larvae rely on gills to take in oxygen and release carbon dioxide.

The development and function of gills in larval amphibians are well-suited for life in water, where the dissolved oxygen must be extracted for respiration. This method of gas exchange is essential during this life stage, enabling them to thrive in aquatic ecosystems until they metamorphose into their adult forms, at which point they may develop lungs and begin to respire air.