Table 2.

Heritability (h ²) of olfactory behaviour for offspring in elevated CO₂ conditions estimated from father–mid‐offspring regressions

Parent holding condition	Juvenile treatment	Population	h 2 = 2b	SE a	N
Control	Acute high CO2	Field‐collected	0.56	0.23	20
	Laboratory‐reared	0.65	0.17	20
		Chronic high CO2	0.02	0.11	20
High CO2		Acute high CO2	0.28	0.09	18
		Chronic high CO2	−0.01	0.06	18

Negative heritabilities are displayed for reference, but should be interpreted as 0.00. Heritabilities (to the nearest 0.01), standard error (SE) and sample size (N) are shown.

^a SE of h ² is twice the standard error of the slope b.