The Company of Biologists

Skip to Main Content

Table 1.

Mass-specific and mass-independent rates of CO₂ emission in newly emerged male (M) and female (F) unfed and fed P. chephrenis fleas at 25°C

					Rate of CO₂ emission
Status	Host	Sex	Stage of digestion	Body mass (mg)	Per flea (μl h^-1)	Mass-specific (μl mg^-1 h^-1)	Mass-independent (μl h^-1)
Unfed	–	M	–	0.11±0.01	0.07±0.01	0.7±0.04	0.17±0.07
	–	F	–	0.18±0.04	0.15±0.03	0.82±0.15	0.17±0.05
Fed	Ac	M	1	0.14±0.01	0.19±0.02	1.31±0.11	0.28±0.05
			2	0.13±0.01	0.14±0.01	1.12±0.09	0.25±0.03
			3	0.14±0.01	0.19±0.02	1.39±0.17	0.27±0.08
		F	1	0.24±0.04	0.31±0.03	1.29±0.13	0.27±0.04
			2	0.31±0.03	0.32±0.03	1.20±0.18	0.20±0.04
			3	0.26±0.04	0.50±0.04	1.98±0.20	0.44±0.04
	Gd	M	1	0.11±0.01	0.34±0.06	2.44±0.40	0.44±0.03
			2	0.18±0.01	0.50±0.02	2.60±0.048	0.56±0.07
			3	0.90±0.08	0.24±0.03	1.50±0.16	0.28±0.02
		F	1	0.27±0.05	1.43±0.31	4.83±0.63	1.34±0.12
			2	0.35±0.06	0.96±0.14	3.49±0.65	0.71±0.14
			3	0.21±0.05	0.43±0.04	2.24±0.29	0.43±0.07

					Rate of CO₂ emission
Status	Host	Sex	Stage of digestion	Body mass (mg)	Per flea (μl h^-1)	Mass-specific (μl mg^-1 h^-1)	Mass-independent (μl h^-1)
Unfed	–	M	–	0.11±0.01	0.07±0.01	0.7±0.04	0.17±0.07
	–	F	–	0.18±0.04	0.15±0.03	0.82±0.15	0.17±0.05
Fed	Ac	M	1	0.14±0.01	0.19±0.02	1.31±0.11	0.28±0.05
			2	0.13±0.01	0.14±0.01	1.12±0.09	0.25±0.03
			3	0.14±0.01	0.19±0.02	1.39±0.17	0.27±0.08
		F	1	0.24±0.04	0.31±0.03	1.29±0.13	0.27±0.04
			2	0.31±0.03	0.32±0.03	1.20±0.18	0.20±0.04
			3	0.26±0.04	0.50±0.04	1.98±0.20	0.44±0.04
	Gd	M	1	0.11±0.01	0.34±0.06	2.44±0.40	0.44±0.03
			2	0.18±0.01	0.50±0.02	2.60±0.048	0.56±0.07
			3	0.90±0.08	0.24±0.03	1.50±0.16	0.28±0.02
		F	1	0.27±0.05	1.43±0.31	4.83±0.63	1.34±0.12
			2	0.35±0.06	0.96±0.14	3.49±0.65	0.71±0.14
			3	0.21±0.05	0.43±0.04	2.24±0.29	0.43±0.07

Fed fleas were on either Acomys cahirinus (Ac) or Gerbillus dasyurus (Gd) as hosts.