Table 1. Summary of the outcome of agonistic encounters in smaller crayfish.

	animal	opponent	outcome of pairings				Fisher’s exact test
			win	lose	draw	winningrate(%)	againstNS	againstDS
A	Naive Small (NS)	Naive Large	3	19	1	13.04	–	0.0002216
	Dominant Small (DS)	Naive Large	16	6	1	69.57	0.0002216	–
	Subordinate Small (SS)	Naive Large	0	5	0	0	1	0.0080586
B	saline injected into Naive Small 10 m before pairing	Naive Large	3	11	1	20	0.663208	0.0069406
	0.1 µM 5 HT injected into NS 10 m before pairing	Naive Large	3	9	0	25	0.391176	0.0298215
	0.5 µM 5 HT injected into NS 10 m before pairing	Naive Large	5	8	1	35.71	0.215234	0.0856527
	1.0 µM 5 HT injected into NS 10 m before pairing	Naive Large	10	6	0	62.5	0.0020281	0.736324
	2.0 µM 5 HT injected into NS 10 m before pairing	Naive Large	7	4	0	63.64	0.0047850	1
	10 µM 5 HTP injected into NS 10 m before pairing	Naive Large	5	0	2	71.43	0.0066607	1
	25 µM phentolamine injected into NS 10 m before pairing	Naive Large	3	7	0	30	0.336415	no test
C	saline injected into DS after social rank formation	Naive Large	9	3	0	75	0.0004872	1
	10 µM mianserin injected into DS after social rank formation	Naive Large	4	6	0	40	0.160526	0.139342
	20 µM mianserin injected into DS after social rank formation	Naive Large	4	9	0	30.77	0.224999	0.0379399
	50 µM mianserin injected into DS after social rank formation	Naive Large	2	8	0	20	0.6269	0.0199944
	25 µM phentolamine injected into DS after social rank formation	Naive Large	4	1	0	80	0.0076923	1