![Sample our Environment & Agriculture journals, sign in here to start your access, latest two full volumes FREE to you for 14 days]({"type":"image" , "src" : "/sda/5934/TOC-Subject-Sample-2021-Environment-Agriculture.jpg"})
Abstract
Heart and scaphognathite activities of C. crangon were monitored during slow (S = 2 %0.day-1) and more rapid (5 = 4 %0 every second hour) dilution of their normal (S = 34 %0) seawater environment.
Heart rates were not significantly (P > 0.05) changed by dilution in either experiment and thus contrasted with those of the control group, which showed a significant (P < 0.001) decrease possibly as an acclimatization response - in the slow dilution experiment.
Scaphognathite rates increased significantly (P < 0.001) on dilution and mean apnoea duration shortened rapidly at salinities below S = 240/00 and were abolished at S = < 200/00.