Key result
Locomotion increases heart rate ~28% vs. retracted state in terrestrial snails.
Why the study?
Passive antipredator responses like retraction may impose mechanical constraints on the circulatory system, whereas scape behavior requires rapid cardiovascular adjustments to increase oxygen delivery.
Does experimentally induced locomotion increase heart rate compared to a retracted state in terrestrial snails?
Does experimentally induced locomotion increase heart rate compared to a retracted state in terrestrial snails?
Cardiovascular function in terrestrial snails dynamically adjusts to behavioral states, increasing heart rate and regularity during locomotion compared to retraction.
Behavioral state modulates snail heart rate; extends comparative cardiovascular physiology while leaving open translational relevance.
The coupled function of physiology and behavior is crucial for generating survival responses. Generally, the cardiovascular system undergoes rapid adjustments during scape behavior to increase oxygen delivery to muscle tissues. In contrast, passive antipredator responses such as retraction in snails may impose mechanical constraints on the circulatory system. Here, we evaluated the cardiovascular response underlying the scape response (through induced retraction) and the physical activity in the invasive land snail Cornu aspersum . We quantified heart rate and heart rate variability in adult snails using laser optocardiography under the two conditions. We found that heart rate increased from retracted to the moving state and was accompanied by changes in heart rate variability and reduction of cardiac irregularities. Also, we found that locomotion intensity and body size did not influence these cardiac parameters. Our results suggest that metabolic demands, neural regulation and mechanical configuration collectively alter heart rate and heart rate variability. Thus, cardiovascular function is strongly dependent on behaviorally induced mechanical shifts in the circulatory system and on a “fight-or-flight”-like response.
No takes yet. Share an insight, caveat, or question.
Pardo-Sarmiento et al. (2026) studied Healthy terrestrial snails (Cornu aspersum) (n=20). Experimentally induced locomotion vs. Retracted state was evaluated on Heart rate (1.31-fold increase, p=<0.0001). Experimentally induced locomotion increased heart rate to 42.0 BPM compared to 32.7 BPM in the retracted state in terrestrial snails (p<0.0001).
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: