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Table 4.

Rhinophore nerve afference increases significantly after the rhinophore tuft is stimulated with prey, predator or conspecific odours

Odour	N	F_2,N—2	P	Baseline	Control	Odour
All rhinophores
Prey	7	255	<0.001	*	*	*
Predator	7	72.9	<0.001	===			*
Conspecific	10	229	<0.001	*	*	*
One rhinophore/animal
Prey	5	247	<0.001	===			*
Predator	5	31.2	<0.001	===			*
Conspecific	5	73.7	0.003	===			*

Odour	N	F_2,N—2	P	Baseline	Control	Odour
All rhinophores
Prey	7	255	<0.001	*	*	*
Predator	7	72.9	<0.001	===			*
Conspecific	10	229	<0.001	*	*	*
One rhinophore/animal
Prey	5	247	<0.001	===			*
Predator	5	31.2	<0.001	===			*
Conspecific	5	73.7	0.003	===			*

Spike counts from extracellular rhinophore nerve recordings were compared between baseline, control, and odour treatments. The MANOVA Fstatistics and P-values test for differences amongst the treatments and the subsequent pairwise comparisons (P=0.05 is significant;*significantly different treatments; === links treatments that were not significantly different).

In addition, we provide statistical results for data sets limited to just one rhinophore per animal, for each odour type. In all cases, odours stimulated significantly greater spike counts than controls. Responses to controls, although consistently greater than baseline(Fig. 8), were significantly greater than baseline only in two of the six tests.

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