TABLE 1.

Behavioural experiment 1.

Lolium grass cultivar		Manawa (diploid hybrid)		Tama (tetraploid L. multiflorum)		Samson (diploid L. perenne)		LSD (5%)
Microctonus hyperodae		Absent	present	absent	present	absent	present	Range
Mean percent of L. bonariensis on-plant (± SEM)	Observation period 1	59.8 ± 4.9a	39.8 ± 4.8b	54.7 ± 4.5a	50.0 ± 4.6ab	50.0 ± 4.6ab	55.6 ± 4.7a	12.8 – 13.6
	Observation period 2	61.7 ± 4.7a	48.3 ± 4.7b	60.7 ± 4.4ab	59.7 ± 4.5ab	54.7 ± 4.5ab	49.6 ± 4.6ab	12.5 – 13.3
	Observation period 3	60.2 ± 4.5a	46.3 ± 4.5bc	58.7 ± 4.3ab	58.0 ± 4.3ab	54.2 ± 4.5abc	43.7 ± 4.4c	12.1 – 12.8
	Observation period 4	60.8 ± 5.4a	39.6 ± 5.3c	61.8 ± 5.3a	54.7 ± 5.2ab	58.7 ± 5.2a	42.2 ± 5.5bc	14.8 – 15.3

Mean percentages (± SEM) of Listronotus bonariensis present on the three Lolium grass cultivars in the absence (control) or presence of Microctonus hyperodae.

Reading horizontally, values without letters in common differ significantly (P < 0.05). Letters are based on GLM least significant differences (LSD) at 5% (₆C₂ = 15 pairwise comparisons) with minimum and maximum LSDs given in the last column.