Left-handed sperm removal by male Calopteryx damselflies (Odonata)

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Table 1 Effects of male genital treatments on mating behaviour and sperm displacement

		Normal copulation												Interrupted copulation
Males	Abbreviation	Copulation duration (s)			Number of abdominal movements			Sperm number in the bursa (×1000)			Sperm number in the spermatheca (×1000)			Sperm number in the bursa (×1000)
Males	Abbreviation	n	x	s.d.	n	x	s.d.	n	x	s.d.	n	x	s.d.	n	x	s.d.
Unmanipulated control (wild)	umc	15	254	147	16	144	60	18	652	404	18	180	138	27	14	13
Manipulated control	mc	8	242	78	8	166	44	8	364	225	8	51	29	8	10	11
Without right process (with left one)	wright	11	144	67	11	90	40	10	672	397	10	75	31	11	72	94
Without left process (with right one)	wleft	7	119	14	8	82	14	8	642	353	8	106	99	12	67	44
Without both processes	wboth	5	143	46	6	91	26	6	852	768	6	43	44	9	66	107
ANOVA		F_{4, 41} = 3.9			F_{4, 44} = 6.6			F_{4, 45} = 1.2			F_{4, 45} = 4.3			F_{4, 62} = 3.9
		P = 0.009			P = 0.0003			P = 0.32			P = 0.005			P = 0.007
Difference in Tukey’s mct (P < 0.05)		umc - wleft			umc - wright			no			umc - mc			no
					umc - wleft						umc - wboth
					mc - wright
					mc - wleft
					mc - wboth

ANOVA and Tukey’s multiple comparison tests (statistically different combinations) are also shown.