The Journal of Insect Science: Volume 3/Article 28/Table 1

Table 1. Developmental duration of Encarsia formosa^* as a function of host instar parasitized.

host instar parasitized	Developmental Duration of the Parasitoid (Day ± S.E.)
	Embryonic	First instar	Second instar	Third instar	Pupa	Oviposition to adult emergence
1st	5.44 ± 1.48^a	3.06 ± 1.94^a	2.12 ± 1.44^a	3.27 ± 1.98^a	4.82 ± 3.07^a	18.14 ± 2.77^a
2nd	4.12 ± 0.65^b	2.26 ± 1.05^ab	2.28 ± 1.04^a	3.11 ± 1.10^a	3.79 ± 1.20^b	14.90 ± 1.31^b
3rd	3.39 ± 0.50^b	1.65 ± 0.86^b	2.21 ± 1.18^a	2.85 ± 1.32^a	3.83 ± 0.96^b	13.93 ± 0.96^c
4th	3.50 ± 0.51^b	1.86 ± 0.95^b	2.42 ± 1.10^a	2.97 ± 1.08^a	3.25 ± 1.18^c	14.03 ± 1.20^c

^* Duration for each parasitoid instar and for the pupa was determined by subtracting the mean day of a given stage from the mean day of the following stage. Each value represnts the mean ± S. E. of the means of at least 3 separate experiments. For each experiment, between 180 and 200 host whiteflies were dissected. A one-way ANOVA followed by the Tukey's HSD post hoc test ( alpha

0.05) was used to determine if there were significant differences in developmental duration. Means in the same column followed by a different letter are significantly different.