Neural Control of Gas Exchange Patterns in Insects: Locust Density-Dependent Phases as a Test Case
Figure 2
Gas exchange patterns in connective-cut S. gregaria of both density-dependent phases, measured at 30°C.
Connective-cut gregarious locusts exhibited all three patterns (a, b, c: DGC, cyclic and continuous, respectively), at similar proportions compared with controls. Connective-cut solitary locusts abandoned DGC and displayed a typical continuous gas exchange pattern (d). Red lines indicate threshold value for determination of spiracle closure (see methods).