Many Antarctic fish

Question

Many Antarctic fish

Quizplus · Accepted Answer

Many Antarctic fish have unique adaptations due to their extreme environment. They are aglomerular, meaning they lack glomeruli, which are key structures in the kidneys of most vertebrates used for filtering blood. Consequently, they do not use ultrafiltration to produce urine, a process that typically involves the glomeruli. Instead, these fish begin urine formation in the distal tubule, bypassing the need for glomerular filtration. This adaptation is likely a response to the cold, stable environment of Antarctic waters, which may reduce the necessity for the fine control of water and solute balance provided by glomerular filtration.

Many Antarctic Fish