Torsion In Gastropods: A Twisting Adaptation Shaping Gastropod Anatomy And Physiology
Torsion is a developmental process in gastropods that involves a twisting of the visceral mass relative to the head-foot. This twisting, which can be either dextral (clockwise) or sinistral (counterclockwise), is a unique adaptation that has allowed gastropods to change from a bilaterally symmetrical body plan to an asymmetrical one. Various degrees and types of torsion exist, leading to a diverse range of gastropod anatomy. Nerve twisting, associated with torsion, plays a crucial role in gastropod physiology. The pallial cavity, a vital space housing respiratory structures, is also affected by torsion. This evolutionary adaptation has influenced gastropod diversity and complexity, offering advantages and disadvantages that have shaped their ecological roles.
