. | DGC characteristics . | . | . | . | |||
---|---|---|---|---|---|---|---|
. | From the mesothoracic spiracle . | . | From the subelytral spiracles . | . | |||
Variable . | Mean . | S.D. . | Mean . | S.D. . | |||
Body Mass (g) | 6.93 | 2.83 | 6.94 | 2.37 | |||
N | 5 | 6 | |||||
DGC: | |||||||
Frequency (mHz) | 0.26 | 0.10 | 0.25 | 0.07 | |||
Duration (min) | 77.35 | 23.1 | 72.4 | 20.6 | |||
Burst period: | |||||||
CO2 volume (μl) | 318.5 | 268.9 | 272.6 | 134.2 | |||
Duration (min) | 33.7 | 9.1 | 32.1 | 10.6 | |||
Flutter period: | |||||||
CO2 volume (μl) | - | - | 25.2 | 17.5 | |||
Duration (min) | - | - | 25.4 | 7.0 |
. | DGC characteristics . | . | . | . | |||
---|---|---|---|---|---|---|---|
. | From the mesothoracic spiracle . | . | From the subelytral spiracles . | . | |||
Variable . | Mean . | S.D. . | Mean . | S.D. . | |||
Body Mass (g) | 6.93 | 2.83 | 6.94 | 2.37 | |||
N | 5 | 6 | |||||
DGC: | |||||||
Frequency (mHz) | 0.26 | 0.10 | 0.25 | 0.07 | |||
Duration (min) | 77.35 | 23.1 | 72.4 | 20.6 | |||
Burst period: | |||||||
CO2 volume (μl) | 318.5 | 268.9 | 272.6 | 134.2 | |||
Duration (min) | 33.7 | 9.1 | 32.1 | 10.6 | |||
Flutter period: | |||||||
CO2 volume (μl) | - | - | 25.2 | 17.5 | |||
Duration (min) | - | - | 25.4 | 7.0 |
DGC, discontinuous gas exchange cycle; SEC, subelytral cavity; -, no measurement taken.
Total DGCs = 51, approximately eight per beetle. Readings from the mesothoracic spiracles were taken on individuals that had elytral holes resealed with dental wax.