Table 1.

Comparisons of mean percent egg hatch ± SE for crosses using infected and tetracycline-treated D. v. virgifera and naturally uninfected D. v. zeae using the Mann–Whitney U test

Female	Male	Cross	n	Eggs	Hatch, %	Comparison
D.v.v.	x D.v.v.	a	10	4706	74.9  ±  5.5	a vs. b NS
D.v.v.	x D.v.v.T	b	10	5109	81.1  ±  3.4
D.v.v.T	x D.v.v.T	c	10	5187	66.4  ±  6.2
D.v.v.T	x D.v.v.	d	14	5627	0.4  ±  0.1	d vs. c*
D.v.z.	x D.v.z.	e	10	4608	83.4  ±  4.0
D.v.z.	x D.v.v.	f	15	6433	0.3  ±  0.1	f vs. e*
D.v.z.	x D.v.v.T	g	15	6376	74.8  ±  6.5	g vs. e NS
D.v.v.	x D.v.z.	h	15	7735	82.0  ±  4.3	h vs. a NS
D.v.v.T	x D.v.z.	i	15	8447	75.5  ±  5.3	i vs. c NS

T, tetracycline-treated; D. v. v., D. v. virgifera; D. v. z., D. virgifera zeae; NS, not significant.

*P < 0.001.